Really, I mean for real fixing Kafka streams doc

Reuse checkstyle components from core spring-cloud-stream-tools module.
Addressing checkstyle warnings in kafka streams binder module.

Resolves #489

README.adoc

@@ -1 +1,711 @@
-Spring Cloud Stream Binder for Apache Kafka
+// Do not edit this file (e.g. go instead to src/main/asciidoc)
+
+:jdkversion: 1.8
+:github-tag: master
+:github-repo: spring-cloud/spring-cloud-stream-binder-kafka
+
+:github-raw: https://raw.githubusercontent.com/{github-repo}/{github-tag}
+:github-code: https://github.com/{github-repo}/tree/{github-tag}
+
+image::https://circleci.com/gh/spring-cloud/spring-cloud-stream-binder-kafka.svg?style=svg["CircleCI", link="https://circleci.com/gh/spring-cloud/spring-cloud-stream-binder-kafka"]
+image::https://codecov.io/gh/spring-cloud/spring-cloud-stream-binder-kafka/branch/{github-tag}/graph/badge.svg["codecov", link="https://codecov.io/gh/spring-cloud/spring-cloud-stream-binder-kafka"]
+image::https://badges.gitter.im/spring-cloud/spring-cloud-stream-binder-kafka.svg[Gitter, link="https://gitter.im/spring-cloud/spring-cloud-stream-binder-kafka?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge"]
+
+// ======================================================================================
+
+//= Overview
+[partintro]
+--
+This guide describes the Apache Kafka implementation of the Spring Cloud Stream Binder.
+It contains information about its design, usage, and configuration options, as well as information on how the Stream Cloud Stream concepts map onto Apache Kafka specific constructs.
+In addition, this guide explains the Kafka Streams binding capabilities of Spring Cloud Stream.
+--
+
+== Apache Kafka Binder
+
+=== Usage
+
+To use Apache Kafka binder, you need to add `spring-cloud-stream-binder-kafka` as a dependency to your Spring Cloud Stream application, as shown in the following example for Maven:
+
+[source,xml]
+----
+<dependency>
+  <groupId>org.springframework.cloud</groupId>
+  <artifactId>spring-cloud-stream-binder-kafka</artifactId>
+</dependency>
+----
+
+Alternatively, you can also use the Spring Cloud Stream Kafka Starter, as shown inn the following example for Maven:
+
+[source,xml]
+----
+<dependency>
+  <groupId>org.springframework.cloud</groupId>
+  <artifactId>spring-cloud-starter-stream-kafka</artifactId>
+</dependency>
+----
+
+=== Overview
+
+The following image shows a simplified diagram of how the Apache Kafka binder operates:
+
+.Kafka Binder
+image::{github-raw}/docs/src/main/asciidoc/images/kafka-binder.png[width=300,scaledwidth="50%"]
+
+The Apache Kafka Binder implementation maps each destination to an Apache Kafka topic.
+The consumer group maps directly to the same Apache Kafka concept.
+Partitioning also maps directly to Apache Kafka partitions as well.
+
+The binder currently uses the Apache Kafka `kafka-clients` 1.0.0 jar and is designed to be used with a broker of at least that version.
+This client can communicate with older brokers (see the Kafka documentation), but certain features may not be available.
+For example, with versions earlier than 0.11.x.x, native headers are not supported.
+Also, 0.11.x.x does not support the `autoAddPartitions` property.
+
+=== Configuration Options
+
+This section contains the configuration options used by the Apache Kafka binder.
+
+For common configuration options and properties pertaining to binder, see the <<binding-properties,core documentation>>.
+
+==== Kafka Binder Properties
+
+spring.cloud.stream.kafka.binder.brokers::
+A list of brokers to which the Kafka binder connects.
++
+Default: `localhost`.
+spring.cloud.stream.kafka.binder.defaultBrokerPort::
+`brokers` allows hosts specified with or without port information (for example, `host1,host2:port2`).
+This sets the default port when no port is configured in the broker list.
++
+Default: `9092`.
+spring.cloud.stream.kafka.binder.configuration::
+Key/Value map of client properties (both producers and consumer) passed to all clients created by the binder.
+Due to the fact that these properties are used by both producers and consumers, usage should be restricted to common properties -- for example, security settings.
+Unknown Kafka producer or consumer properties provided through this configuration are filtered out and not allowed to propagate.
+Properties here supersede any properties set in boot.
++
+Default: Empty map.
+spring.cloud.stream.kafka.binder.consumerProperties::
+Key/Value map of arbitrary Kafka client consumer properties.
+In addition to support known Kafka consumer properties, unknown consumer properties are allowed here as well.
+Properties here supersede any properties set in boot and in the `configuration` property above.
++
+Default: Empty map.
+spring.cloud.stream.kafka.binder.headers::
+The list of custom headers that are transported by the binder.
+Only required when communicating with older applications (<= 1.3.x) with a `kafka-clients` version < 0.11.0.0. Newer versions support headers natively.
++
+Default: empty.
+spring.cloud.stream.kafka.binder.healthTimeout::
+The time to wait to get partition information, in seconds.
+Health reports as down if this timer expires.
++
+Default: 10.
+spring.cloud.stream.kafka.binder.requiredAcks::
+The number of required acks on the broker.
+See the Kafka documentation for the producer `acks` property.
++
+Default: `1`.
+spring.cloud.stream.kafka.binder.minPartitionCount::
+Effective only if `autoCreateTopics` or `autoAddPartitions` is set.
+The global minimum number of partitions that the binder configures on topics on which it produces or consumes data.
+It can be superseded by the `partitionCount` setting of the producer or by the value of `instanceCount * concurrency` settings of the producer (if either is larger).
++
+Default: `1`.
+spring.cloud.stream.kafka.binder.producerProperties::
+Key/Value map of arbitrary Kafka client producer properties.
+In addition to support known Kafka producer properties, unknown producer properties are allowed here as well.
+Properties here supersede any properties set in boot and in the `configuration` property above.
++
+Default: Empty map.
+spring.cloud.stream.kafka.binder.replicationFactor::
+The replication factor of auto-created topics if `autoCreateTopics` is active.
+Can be overridden on each binding.
++
+Default: `1`.
+spring.cloud.stream.kafka.binder.autoCreateTopics::
+If set to `true`, the binder creates new topics automatically.
+If set to `false`, the binder relies on the topics being already configured.
+In the latter case, if the topics do not exist, the binder fails to start.
++
+NOTE: This setting is independent of the `auto.topic.create.enable` setting of the broker and does not influence it.
+If the server is set to auto-create topics, they may be created as part of the metadata retrieval request, with default broker settings.
++
+Default: `true`.
+spring.cloud.stream.kafka.binder.autoAddPartitions::
+If set to `true`, the binder creates new partitions if required.
+If set to `false`, the binder relies on the partition size of the topic being already configured.
+If the partition count of the target topic is smaller than the expected value, the binder fails to start.
++
+Default: `false`.
+spring.cloud.stream.kafka.binder.transaction.transactionIdPrefix::
+Enables transactions in the binder. See `transaction.id` in the Kafka documentation and https://docs.spring.io/spring-kafka/reference/html/_reference.html#transactions[Transactions] in the `spring-kafka` documentation.
+When transactions are enabled, individual `producer` properties are ignored and all producers use the `spring.cloud.stream.kafka.binder.transaction.producer.*` properties.
++
+Default `null` (no transactions)
+spring.cloud.stream.kafka.binder.transaction.producer.*::
+Global producer properties for producers in a transactional binder.
+See `spring.cloud.stream.kafka.binder.transaction.transactionIdPrefix` and <<kafka-producer-properties>> and the general producer properties supported by all binders.
++
+Default: See individual producer properties.
+
+spring.cloud.stream.kafka.binder.headerMapperBeanName::
+The bean name of a `KafkaHeaderMapper` used for mapping `spring-messaging` headers to and from Kafka headers.
+Use this, for example, if you wish to customize the trusted packages in a `DefaultKafkaHeaderMapper` that uses JSON deserialization for the headers.
++
+Default: none.
+
+[[kafka-consumer-properties]]
+==== Kafka Consumer Properties
+
+The following properties are available for Kafka consumers only and
+must be prefixed with `spring.cloud.stream.kafka.bindings.<channelName>.consumer.`.
+
+admin.configuration::
+A `Map` of Kafka topic properties used when provisioning topics -- for example, `spring.cloud.stream.kafka.bindings.input.consumer.admin.configuration.message.format.version=0.9.0.0`
++
+Default: none.
+
+admin.replicas-assignment::
+A Map<Integer, List<Integer>> of replica assignments, with the key being the partition and the value being the assignments.
+Used when provisioning new topics.
+See the `NewTopic` Javadocs in the `kafka-clients` jar.
++
+Default: none.
+
+admin.replication-factor::
+The replication factor to use when provisioning topics. Overrides the binder-wide setting.
+Ignored if `replicas-assignments` is present.
++
+Default: none (the binder-wide default of 1 is used).
+
+autoRebalanceEnabled::
+When `true`, topic partitions is automatically rebalanced between the members of a consumer group.
+When `false`, each consumer is assigned a fixed set of partitions based on `spring.cloud.stream.instanceCount` and `spring.cloud.stream.instanceIndex`.
+This requires both the `spring.cloud.stream.instanceCount` and `spring.cloud.stream.instanceIndex` properties to be set appropriately on each launched instance.
+The value of the `spring.cloud.stream.instanceCount` property must typically be greater than 1 in this case.
++
+Default: `true`.
+ackEachRecord::
+When `autoCommitOffset` is `true`, this setting dictates whether to commit the offset after each record is processed.
+By default, offsets are committed after all records in the batch of records returned by `consumer.poll()` have been processed.
+The number of records returned by a poll can be controlled with the `max.poll.records` Kafka property, which is set through the consumer `configuration` property.
+Setting this to `true` may cause a degradation in performance, but doing so reduces the likelihood of redelivered records when a failure occurs.
+Also, see the binder `requiredAcks` property, which also affects the performance of committing offsets.
++
+Default: `false`.
+autoCommitOffset::
+Whether to autocommit offsets when a message has been processed.
+If set to `false`, a header with the key `kafka_acknowledgment` of the type `org.springframework.kafka.support.Acknowledgment` header is present in the inbound message.
+Applications may use this header for acknowledging messages.
+See the examples section for details.
+When this property is set to `false`, Kafka binder sets the ack mode to `org.springframework.kafka.listener.AbstractMessageListenerContainer.AckMode.MANUAL` and the application is responsible for acknowledging records.
+Also see `ackEachRecord`.
++
+Default: `true`.
+autoCommitOnError::
+Effective only if `autoCommitOffset` is set to `true`.
+If set to `false`, it suppresses auto-commits for messages that result in errors and commits only for successful messages. It allows a stream to automatically replay from the last successfully processed message, in case of persistent failures.
+If set to `true`, it always auto-commits (if auto-commit is enabled).
+If not set (the default), it effectively has the same value as `enableDlq`, auto-committing erroneous messages if they are sent to a DLQ and not committing them otherwise.
++
+Default: not set.
+resetOffsets::
+Whether to reset offsets on the consumer to the value provided by startOffset.
+Must be false if a `KafkaRebalanceListener` is provided; see <<rebalance-listener>>.
++
+Default: `false`.
+startOffset::
+The starting offset for new groups.
+Allowed values: `earliest` and `latest`.
+If the consumer group is set explicitly for the consumer 'binding' (through `spring.cloud.stream.bindings.<channelName>.group`), 'startOffset' is set to `earliest`. Otherwise, it is set to `latest` for the `anonymous` consumer group.
+Also see `resetOffsets` (earlier in this list).
++
+Default: null (equivalent to `earliest`).
+enableDlq::
+When set to true, it enables DLQ behavior for the consumer.
+By default, messages that result in errors are forwarded to a topic named `error.<destination>.<group>`.
+The DLQ topic name can be configurable by setting the `dlqName` property.
+This provides an alternative option to the more common Kafka replay scenario for the case when the number of errors is relatively small and replaying the entire original topic may be too cumbersome.
+See <<kafka-dlq-processing>> processing for more information.
+Starting with version 2.0, messages sent to the DLQ topic are enhanced with the following headers: `x-original-topic`, `x-exception-message`, and `x-exception-stacktrace` as `byte[]`.
+**Not allowed when `destinationIsPattern` is `true`.**
++
+Default: `false`.
+configuration::
+Map with a key/value pair containing generic Kafka consumer properties.
+In addition to having Kafka consumer properties, other configuration properties can be passed here.
+For example some properties needed by the application such as `spring.cloud.stream.kafka.bindings.input.consumer.configuration.foo=bar`.
++
+Default: Empty map.
+dlqName::
+The name of the DLQ topic to receive the error messages.
++
+Default: null (If not specified, messages that result in errors are forwarded to a topic named `error.<destination>.<group>`).
+dlqProducerProperties::
+Using this, DLQ-specific producer properties can be set.
+All the properties available through kafka producer properties can be set through this property.
++
+Default: Default Kafka producer properties.
+standardHeaders::
+Indicates which standard headers are populated by the inbound channel adapter.
+Allowed values: `none`, `id`, `timestamp`, or `both`.
+Useful if using native deserialization and the first component to receive a message needs an `id` (such as an aggregator that is configured to use a JDBC message store).
++
+Default: `none`
+converterBeanName::
+The name of a bean that implements `RecordMessageConverter`. Used in the inbound channel adapter to replace the default `MessagingMessageConverter`.
++
+Default: `null`
+idleEventInterval::
+The interval, in milliseconds, between events indicating that no messages have recently been received.
+Use an `ApplicationListener<ListenerContainerIdleEvent>` to receive these events.
+See <<pause-resume>> for a usage example.
++
+Default: `30000`
+destinationIsPattern::
+When true, the destination is treated as a regular expression `Pattern` used to match topic names by the broker.
+When true, topics are not provisioned, and `enableDlq` is not allowed, because the binder does not know the topic names during the provisioning phase.
+Note, the time taken to detect new topics that match the pattern is controlled by the consumer property `metadata.max.age.ms`, which (at the time of writing) defaults to 300,000ms (5 minutes).
+This can be configured using the `configuration` property above.
++
+Default: `false`
+
+[[kafka-producer-properties]]
+==== Kafka Producer Properties
+
+The following properties are available for Kafka producers only and
+must be prefixed with `spring.cloud.stream.kafka.bindings.<channelName>.producer.`.
+
+admin.configuration::
+A `Map` of Kafka topic properties used when provisioning new topics -- for example, `spring.cloud.stream.kafka.bindings.input.consumer.admin.configuration.message.format.version=0.9.0.0`
++
+Default: none.
+
+admin.replicas-assignment::
+A Map<Integer, List<Integer>> of replica assignments, with the key being the partition and the value being the assignments.
+Used when provisioning new topics.
+See `NewTopic` javadocs in the `kafka-clients` jar.
++
+Default: none.
+
+admin.replication-factor::
+The replication factor to use when provisioning new topics. Overrides the binder-wide setting.
+Ignored if `replicas-assignments` is present.
++
+Default: none (the binder-wide default of 1 is used).
+
+bufferSize::
+Upper limit, in bytes, of how much data the Kafka producer attempts to batch before sending.
++
+Default: `16384`.
+sync::
+Whether the producer is synchronous.
++
+Default: `false`.
+batchTimeout::
+How long the producer waits to allow more messages to accumulate in the same batch before sending the messages.
+(Normally, the producer does not wait at all and simply sends all the messages that accumulated while the previous send was in progress.) A non-zero value may increase throughput at the expense of latency.
++
+Default: `0`.
+messageKeyExpression::
+A SpEL expression evaluated against the outgoing message used to populate the key of the produced Kafka message -- for example, `headers['myKey']`.
+The payload cannot be used because, by the time this expression is evaluated, the payload is already in the form of a `byte[]`.
++
+Default: `none`.
+headerPatterns::
+A comma-delimited list of simple patterns to match Spring messaging headers to be mapped to the Kafka `Headers` in the `ProducerRecord`.
+Patterns can begin or end with the wildcard character (asterisk).
+Patterns can be negated by prefixing with `!`.
+Matching stops after the first match (positive or negative).
+For example `!ask,as*` will pass `ash` but not `ask`.
+`id` and `timestamp` are never mapped.
++
+Default: `*` (all headers - except the `id` and `timestamp`)
+configuration::
+Map with a key/value pair containing generic Kafka producer properties.
++
+Default: Empty map.
+
+NOTE: The Kafka binder uses the `partitionCount` setting of the producer as a hint to create a topic with the given partition count (in conjunction with the `minPartitionCount`, the maximum of the two being the value being used).
+Exercise caution when configuring both `minPartitionCount` for a binder and `partitionCount` for an application, as the larger value is used.
+If a topic already exists with a smaller partition count and `autoAddPartitions` is disabled (the default), the binder fails to start.
+If a topic already exists with a smaller partition count and `autoAddPartitions` is enabled, new partitions are added.
+If a topic already exists with a larger number of partitions than the maximum of (`minPartitionCount` or `partitionCount`), the existing partition count is used.
+
+==== Usage examples
+
+In this section, we show the use of the preceding properties for specific scenarios.
+
+===== Example: Setting `autoCommitOffset` to `false` and Relying on Manual Acking
+
+This example illustrates how one may manually acknowledge offsets in a consumer application.
+
+This example requires that `spring.cloud.stream.kafka.bindings.input.consumer.autoCommitOffset` be set to `false`.
+Use the corresponding input channel name for your example.
+
+[source]
+----
+@SpringBootApplication
+@EnableBinding(Sink.class)
+public class ManuallyAcknowdledgingConsumer {
+
+ public static void main(String[] args) {
+     SpringApplication.run(ManuallyAcknowdledgingConsumer.class, args);
+ }
+
+ @StreamListener(Sink.INPUT)
+ public void process(Message<?> message) {
+     Acknowledgment acknowledgment = message.getHeaders().get(KafkaHeaders.ACKNOWLEDGMENT, Acknowledgment.class);
+     if (acknowledgment != null) {
+         System.out.println("Acknowledgment provided");
+         acknowledgment.acknowledge();
+     }
+ }
+}
+----
+
+===== Example: Security Configuration
+
+Apache Kafka 0.9 supports secure connections between client and brokers.
+To take advantage of this feature, follow the guidelines in the http://kafka.apache.org/090/documentation.html#security_configclients[Apache Kafka Documentation] as well as the Kafka 0.9 http://docs.confluent.io/2.0.0/kafka/security.html[security guidelines from the Confluent documentation].
+Use the `spring.cloud.stream.kafka.binder.configuration` option to set security properties for all clients created by the binder.
+
+For example, to set `security.protocol` to `SASL_SSL`, set the following property:
+
+[source]
+----
+spring.cloud.stream.kafka.binder.configuration.security.protocol=SASL_SSL
+----
+
+All the other security properties can be set in a similar manner.
+
+When using Kerberos, follow the instructions in the http://kafka.apache.org/090/documentation.html#security_sasl_clientconfig[reference documentation] for creating and referencing the JAAS configuration.
+
+Spring Cloud Stream supports passing JAAS configuration information to the application by using a JAAS configuration file and using Spring Boot properties.
+
+====== Using JAAS Configuration Files
+
+The JAAS and (optionally) krb5 file locations can be set for Spring Cloud Stream applications by using system properties.
+The following example shows how to launch a Spring Cloud Stream application with SASL and Kerberos by using a JAAS configuration file:
+
+[source,bash]
+----
+ java -Djava.security.auth.login.config=/path.to/kafka_client_jaas.conf -jar log.jar \
+   --spring.cloud.stream.kafka.binder.brokers=secure.server:9092 \
+   --spring.cloud.stream.bindings.input.destination=stream.ticktock \
+   --spring.cloud.stream.kafka.binder.configuration.security.protocol=SASL_PLAINTEXT
+----
+
+====== Using Spring Boot Properties
+
+As an alternative to having a JAAS configuration file, Spring Cloud Stream provides a mechanism for setting up the JAAS configuration for Spring Cloud Stream applications by using Spring Boot properties.
+
+The following properties can be used to configure the login context of the Kafka client:
+
+spring.cloud.stream.kafka.binder.jaas.loginModule::
+The login module name. Not necessary to be set in normal cases.
++
+Default: `com.sun.security.auth.module.Krb5LoginModule`.
+spring.cloud.stream.kafka.binder.jaas.controlFlag::
+The control flag of the login module.
++
+Default: `required`.
+spring.cloud.stream.kafka.binder.jaas.options::
+Map with a key/value pair containing the login module options.
++
+Default: Empty map.
+
+The following example shows how to launch a Spring Cloud Stream application with SASL and Kerberos by using Spring Boot configuration properties:
+
+[source,bash]
+----
+ java --spring.cloud.stream.kafka.binder.brokers=secure.server:9092 \
+   --spring.cloud.stream.bindings.input.destination=stream.ticktock \
+   --spring.cloud.stream.kafka.binder.autoCreateTopics=false \
+   --spring.cloud.stream.kafka.binder.configuration.security.protocol=SASL_PLAINTEXT \
+   --spring.cloud.stream.kafka.binder.jaas.options.useKeyTab=true \
+   --spring.cloud.stream.kafka.binder.jaas.options.storeKey=true \
+   --spring.cloud.stream.kafka.binder.jaas.options.keyTab=/etc/security/keytabs/kafka_client.keytab \
+   --spring.cloud.stream.kafka.binder.jaas.options.principal=kafka-client-1@EXAMPLE.COM
+----
+
+The preceding example represents the equivalent of the following JAAS file:
+
+[source]
+----
+KafkaClient {
+    com.sun.security.auth.module.Krb5LoginModule required
+    useKeyTab=true
+    storeKey=true
+    keyTab="/etc/security/keytabs/kafka_client.keytab"
+    principal="kafka-client-1@EXAMPLE.COM";
+};
+----
+
+If the topics required already exist on the broker or will be created by an administrator, autocreation can be turned off and only client JAAS properties need to be sent.
+
+NOTE: Do not mix JAAS configuration files and Spring Boot properties in the same application.
+If the `-Djava.security.auth.login.config` system property is already present, Spring Cloud Stream ignores the Spring Boot properties.
+
+NOTE: Be careful when using the `autoCreateTopics` and `autoAddPartitions` with Kerberos.
+Usually, applications may use principals that do not have administrative rights in Kafka and Zookeeper.
+Consequently, relying on Spring Cloud Stream to create/modify topics may fail.
+In secure environments, we strongly recommend creating topics and managing ACLs administratively by using Kafka tooling.
+
+[[pause-resume]]
+===== Example: Pausing and Resuming the Consumer
+
+If you wish to suspend consumption but not cause a partition rebalance, you can pause and resume the consumer.
+This is facilitated by adding the `Consumer` as a parameter to your `@StreamListener`.
+To resume, you need an `ApplicationListener` for `ListenerContainerIdleEvent` instances.
+The frequency at which events are published is controlled by the `idleEventInterval` property.
+Since the consumer is not thread-safe, you must call these methods on the calling thread.
+
+The following simple application shows how to pause and resume:
+
+[source, java]
+----
+@SpringBootApplication
+@EnableBinding(Sink.class)
+public class Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class, args);
+	}
+
+	@StreamListener(Sink.INPUT)
+	public void in(String in, @Header(KafkaHeaders.CONSUMER) Consumer<?, ?> consumer) {
+		System.out.println(in);
+		consumer.pause(Collections.singleton(new TopicPartition("myTopic", 0)));
+	}
+
+	@Bean
+	public ApplicationListener<ListenerContainerIdleEvent> idleListener() {
+		return event -> {
+			System.out.println(event);
+			if (event.getConsumer().paused().size() > 0) {
+				event.getConsumer().resume(event.getConsumer().paused());
+			}
+		};
+	}
+
+}
+----
+
+[[kafka-error-channels]]
+=== Error Channels
+
+Starting with version 1.3, the binder unconditionally sends exceptions to an error channel for each consumer destination and can also be configured to send async producer send failures to an error channel.
+See <<spring-cloud-stream-overview-error-handling>> for more information.
+
+The payload of the `ErrorMessage` for a send failure is a `KafkaSendFailureException` with properties:
+
+* `failedMessage`: The Spring Messaging `Message<?>` that failed to be sent.
+* `record`: The raw `ProducerRecord` that was created from the `failedMessage`
+
+There is no automatic handling of producer exceptions (such as sending to a <<kafka-dlq-processing, Dead-Letter queue>>).
+You can consume these exceptions with your own Spring Integration flow.
+
+[[kafka-metrics]]
+=== Kafka Metrics
+
+Kafka binder module exposes the following metrics:
+
+`spring.cloud.stream.binder.kafka.offset`: This metric indicates how many messages have not been yet consumed from a given binder's topic by a given consumer group.
+The metrics provided are based on the Mircometer metrics library. The metric contains the consumer group information, topic and the actual lag in committed offset from the latest offset on the topic.
+This metric is particularly useful for providing auto-scaling feedback to a PaaS platform.
+
+[[kafka-tombstones]]
+=== Tombstone Records (null record values)
+
+When using compacted topics, a record with a `null` value (also called a tombstone record) represents the deletion of a key.
+To receive such messages in a `@StreamListener` method, the parameter must be marked as not required to receive a `null` value argument.
+
+====
+[source, java]
+----
+@StreamListener(Sink.INPUT)
+public void in(@Header(KafkaHeaders.RECEIVED_MESSAGE_KEY) byte[] key,
+               @Payload(required = false) Customer customer) {
+    // customer is null if a tombstone record
+    ...
+}
+----
+====
+
+[[rebalance-listener]]
+=== Using a KafkaRebalanceListener
+
+Applications may wish to seek topics/partitions to arbitrary offsets when the partitions are initially assigned, or perform other operations on the consumer.
+Starting with version 2.1, if you provide a single `KafkaRebalanceListener` bean in the application context, it will be wired into all Kafka consumer bindings.
+
+====
+[source, java]
+----
+public interface KafkaBindingRebalanceListener {
+
+	/**
+	 * Invoked by the container before any pending offsets are committed.
+	 * @param bindingName the name of the binding.
+	 * @param consumer the consumer.
+	 * @param partitions the partitions.
+	 */
+	default void onPartitionsRevokedBeforeCommit(String bindingName, Consumer<?, ?> consumer,
+			Collection<TopicPartition> partitions) {
+
+	}
+
+	/**
+	 * Invoked by the container after any pending offsets are committed.
+	 * @param bindingName the name of the binding.
+	 * @param consumer the consumer.
+	 * @param partitions the partitions.
+	 */
+	default void onPartitionsRevokedAfterCommit(String bindingName, Consumer<?, ?> consumer, Collection<TopicPartition> partitions) {
+
+	}
+
+	/**
+	 * Invoked when partitions are initially assigned or after a rebalance.
+	 * Applications might only want to perform seek operations on an initial assignment.
+	 * @param bindingName the name of the binding.
+	 * @param consumer the consumer.
+	 * @param partitions the partitions.
+	 * @param initial true if this is the initial assignment.
+	 */
+	default void onPartitionsAssigned(String bindingName, Consumer<?, ?> consumer, Collection<TopicPartition> partitions,
+			boolean initial) {
+
+	}
+
+}
+----
+====
+
+You cannot set the `resetOffsets` consumer property to `true` when you provide a rebalance listener.
+
+= Appendices
+[appendix]
+[[building]]
+== Building
+
+:jdkversion: 1.7
+
+=== Basic Compile and Test
+
+To build the source you will need to install JDK {jdkversion}.
+
+The build uses the Maven wrapper so you don't have to install a specific
+version of Maven. To enable the tests, you should have Kafka server 0.9 or above running
+before building. See below for more information on running the servers.
+
+The main build command is
+
+----
+$ ./mvnw clean install
+----
+
+You can also add '-DskipTests' if you like, to avoid running the tests.
+
+NOTE: You can also install Maven (>=3.3.3) yourself and run the `mvn` command
+in place of `./mvnw` in the examples below. If you do that you also
+might need to add `-P spring` if your local Maven settings do not
+contain repository declarations for spring pre-release artifacts.
+
+NOTE: Be aware that you might need to increase the amount of memory
+available to Maven by setting a `MAVEN_OPTS` environment variable with
+a value like `-Xmx512m -XX:MaxPermSize=128m`. We try to cover this in
+the `.mvn` configuration, so if you find you have to do it to make a
+build succeed, please raise a ticket to get the settings added to
+source control.
+
+
+The projects that require middleware generally include a
+`docker-compose.yml`, so consider using
+http://compose.docker.io/[Docker Compose] to run the middeware servers
+in Docker containers.
+
+=== Documentation
+
+There is a "full" profile that will generate documentation.
+
+=== Working with the code
+If you don't have an IDE preference we would recommend that you use
+http://www.springsource.com/developer/sts[Spring Tools Suite] or
+http://eclipse.org[Eclipse] when working with the code. We use the
+http://eclipse.org/m2e/[m2eclipe] eclipse plugin for maven support. Other IDEs and tools
+should also work without issue.
+
+==== Importing into eclipse with m2eclipse
+We recommend the http://eclipse.org/m2e/[m2eclipe] eclipse plugin when working with
+eclipse. If you don't already have m2eclipse installed it is available from the "eclipse
+marketplace".
+
+Unfortunately m2e does not yet support Maven 3.3, so once the projects
+are imported into Eclipse you will also need to tell m2eclipse to use
+the `.settings.xml` file for the projects.  If you do not do this you
+may see many different errors related to the POMs in the
+projects.  Open your Eclipse preferences, expand the Maven
+preferences, and select User Settings.  In the User Settings field
+click Browse and navigate to the Spring Cloud project you imported
+selecting the `.settings.xml` file in that project.  Click Apply and
+then OK to save the preference changes.
+
+NOTE: Alternatively you can copy the repository settings from https://github.com/spring-cloud/spring-cloud-build/blob/master/.settings.xml[`.settings.xml`] into your own `~/.m2/settings.xml`.
+
+==== Importing into eclipse without m2eclipse
+If you prefer not to use m2eclipse you can generate eclipse project metadata using the
+following command:
+
+[indent=0]
+----
+	$ ./mvnw eclipse:eclipse
+----
+
+The generated eclipse projects can be imported by selecting `import existing projects`
+from the `file` menu.
+[[contributing]
+== Contributing
+
+Spring Cloud is released under the non-restrictive Apache 2.0 license,
+and follows a very standard Github development process, using Github
+tracker for issues and merging pull requests into master. If you want
+to contribute even something trivial please do not hesitate, but
+follow the guidelines below.
+
+=== Sign the Contributor License Agreement
+Before we accept a non-trivial patch or pull request we will need you to sign the
+https://support.springsource.com/spring_committer_signup[contributor's agreement].
+Signing the contributor's agreement does not grant anyone commit rights to the main
+repository, but it does mean that we can accept your contributions, and you will get an
+author credit if we do.  Active contributors might be asked to join the core team, and
+given the ability to merge pull requests.
+
+=== Code Conventions and Housekeeping
+None of these is essential for a pull request, but they will all help.  They can also be
+added after the original pull request but before a merge.
+
+* Use the Spring Framework code format conventions. If you use Eclipse
+  you can import formatter settings using the
+  `eclipse-code-formatter.xml` file from the
+  https://github.com/spring-cloud/build/tree/master/eclipse-coding-conventions.xml[Spring
+  Cloud Build] project. If using IntelliJ, you can use the
+  http://plugins.jetbrains.com/plugin/6546[Eclipse Code Formatter
+  Plugin] to import the same file.
+* Make sure all new `.java` files to have a simple Javadoc class comment with at least an
+  `@author` tag identifying you, and preferably at least a paragraph on what the class is
+  for.
+* Add the ASF license header comment to all new `.java` files (copy from existing files
+  in the project)
+* Add yourself as an `@author` to the .java files that you modify substantially (more
+  than cosmetic changes).
+* Add some Javadocs and, if you change the namespace, some XSD doc elements.
+* A few unit tests would help a lot as well -- someone has to do it.
+* If no-one else is using your branch, please rebase it against the current master (or
+  other target branch in the main project).
+* When writing a commit message please follow http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html[these conventions],
+  if you are fixing an existing issue please add `Fixes gh-XXXX` at the end of the commit
+  message (where XXXX is the issue number).
+
+// ======================================================================================

docs/pom.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<artifactId>spring-cloud-stream-binder-kafka-docs</artifactId>
+	<parent>
+		<groupId>org.springframework.cloud</groupId>
+		<artifactId>spring-cloud-stream-binder-kafka-parent</artifactId>
+		<version>2.1.0.RC2</version>
+	</parent>
+	<packaging>pom</packaging>
+	<name>spring-cloud-stream-binder-kafka-docs</name>
+	<description>Spring Cloud Stream Kafka Binder Docs</description>
+	<properties>
+		<docs.main>spring-cloud-stream-binder-kafka</docs.main>
+		<main.basedir>${basedir}/..</main.basedir>
+	</properties>
+
+	<profiles>
+		<profile>
+			<id>docs</id>
+			<build>
+				<plugins>
+					<plugin>
+						<groupId>org.apache.maven.plugins</groupId>
+						<artifactId>maven-dependency-plugin</artifactId>
+					</plugin>
+					<plugin>
+						<groupId>org.asciidoctor</groupId>
+						<artifactId>asciidoctor-maven-plugin</artifactId>
+						<inherited>false</inherited>
+					</plugin>
+					<plugin>
+						<groupId>com.agilejava.docbkx</groupId>
+						<artifactId>docbkx-maven-plugin</artifactId>
+					</plugin>
+					<plugin>
+						<groupId>org.apache.maven.plugins</groupId>
+						<artifactId>maven-antrun-plugin</artifactId>
+						<inherited>false</inherited>
+					</plugin>
+					<plugin>
+						<groupId>org.codehaus.mojo</groupId>
+						<artifactId>build-helper-maven-plugin</artifactId>
+						<inherited>false</inherited>
+					</plugin>
+				</plugins>
+			</build>
+		</profile>
+	</profiles>
+</project>

docs/src/main/asciidoc/README.adoc

@@ -0,0 +1,22 @@
+:jdkversion: 1.8
+:github-tag: master
+:github-repo: spring-cloud/spring-cloud-stream-binder-kafka
+
+:github-raw: https://raw.githubusercontent.com/{github-repo}/{github-tag}
+:github-code: https://github.com/{github-repo}/tree/{github-tag}
+
+image::https://circleci.com/gh/spring-cloud/spring-cloud-stream-binder-kafka.svg?style=svg["CircleCI", link="https://circleci.com/gh/spring-cloud/spring-cloud-stream-binder-kafka"]
+image::https://codecov.io/gh/spring-cloud/spring-cloud-stream-binder-kafka/branch/{github-tag}/graph/badge.svg["codecov", link="https://codecov.io/gh/spring-cloud/spring-cloud-stream-binder-kafka"]
+image::https://badges.gitter.im/spring-cloud/spring-cloud-stream-binder-kafka.svg[Gitter, link="https://gitter.im/spring-cloud/spring-cloud-stream-binder-kafka?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge"]
+
+// ======================================================================================
+
+//= Overview
+include::overview.adoc[]
+
+= Appendices
+[appendix]
+include::building.adoc[]
+include::contributing.adoc[]
+
+// ======================================================================================

docs/src/main/asciidoc/dlq.adoc

@@ -1,5 +1,5 @@
 [[kafka-dlq-processing]]
-== Dead-Letter Topic Processing
+=== Dead-Letter Topic Processing
 
 Because you cannot anticipate how users would want to dispose of dead-lettered messages, the framework does not provide any standard mechanism to handle them.
 If the reason for the dead-lettering is transient, you may wish to route the messages back to the original topic.

docs/src/main/asciidoc/ghpages.sh

@@ -0,0 +1,330 @@
+#!/bin/bash -x
+
+set -e
+
+# Set default props like MAVEN_PATH, ROOT_FOLDER etc.
+function set_default_props() {
+    # The script should be executed from the root folder
+    ROOT_FOLDER=`pwd`
+    echo "Current folder is ${ROOT_FOLDER}"
+
+    if [[ ! -e "${ROOT_FOLDER}/.git" ]]; then
+        echo "You're not in the root folder of the project!"
+        exit 1
+    fi
+
+    # Prop that will let commit the changes
+    COMMIT_CHANGES="no"
+    MAVEN_PATH=${MAVEN_PATH:-}
+    echo "Path to Maven is [${MAVEN_PATH}]"
+    REPO_NAME=${PWD##*/}
+    echo "Repo name is [${REPO_NAME}]"
+    SPRING_CLOUD_STATIC_REPO=${SPRING_CLOUD_STATIC_REPO:-git@github.com:spring-cloud/spring-cloud-static.git}
+    echo "Spring Cloud Static repo is [${SPRING_CLOUD_STATIC_REPO}"
+}
+
+# Check if gh-pages exists and docs have been built
+function check_if_anything_to_sync() {
+    git remote set-url --push origin `git config remote.origin.url | sed -e 's/^git:/https:/'`
+
+    if ! (git remote set-branches --add origin gh-pages && git fetch -q); then
+        echo "No gh-pages, so not syncing"
+        exit 0
+    fi
+
+    if ! [ -d docs/target/generated-docs ] && ! [ "${BUILD}" == "yes" ]; then
+        echo "No gh-pages sources in docs/target/generated-docs, so not syncing"
+        exit 0
+    fi
+}
+
+function retrieve_current_branch() {
+    # Code getting the name of the current branch. For master we want to publish as we did until now
+    # http://stackoverflow.com/questions/1593051/how-to-programmatically-determine-the-current-checked-out-git-branch
+    # If there is a branch already passed will reuse it - otherwise will try to find it
+    CURRENT_BRANCH=${BRANCH}
+    if [[ -z "${CURRENT_BRANCH}" ]] ; then
+      CURRENT_BRANCH=$(git symbolic-ref -q HEAD)
+      CURRENT_BRANCH=${CURRENT_BRANCH##refs/heads/}
+      CURRENT_BRANCH=${CURRENT_BRANCH:-HEAD}
+    fi
+    echo "Current branch is [${CURRENT_BRANCH}]"
+    git checkout ${CURRENT_BRANCH} || echo "Failed to check the branch... continuing with the script"
+}
+
+# Switches to the provided value of the release version. We always prefix it with `v`
+function switch_to_tag() {
+    git checkout v${VERSION}
+}
+
+# Build the docs if switch is on
+function build_docs_if_applicable() {
+    if [[ "${BUILD}" == "yes" ]] ; then
+        ./mvnw clean install -P docs -pl docs -DskipTests
+    fi
+}
+
+# Get the name of the `docs.main` property
+# Get whitelisted branches - assumes that a `docs` module is available under `docs` profile
+function retrieve_doc_properties() {
+    MAIN_ADOC_VALUE=$("${MAVEN_PATH}"mvn -q \
+        -Dexec.executable="echo" \
+        -Dexec.args='${docs.main}' \
+        --non-recursive \
+        org.codehaus.mojo:exec-maven-plugin:1.3.1:exec)
+    echo "Extracted 'main.adoc' from Maven build [${MAIN_ADOC_VALUE}]"
+
+
+    WHITELIST_PROPERTY=${WHITELIST_PROPERTY:-"docs.whitelisted.branches"}
+    WHITELISTED_BRANCHES_VALUE=$("${MAVEN_PATH}"mvn -q \
+        -Dexec.executable="echo" \
+        -Dexec.args="\${${WHITELIST_PROPERTY}}" \
+        org.codehaus.mojo:exec-maven-plugin:1.3.1:exec \
+        -P docs \
+        -pl docs)
+    echo "Extracted '${WHITELIST_PROPERTY}' from Maven build [${WHITELISTED_BRANCHES_VALUE}]"
+}
+
+# Stash any outstanding changes
+function stash_changes() {
+    git diff-index --quiet HEAD && dirty=$? || (echo "Failed to check if the current repo is dirty. Assuming that it is." && dirty="1")
+    if [ "$dirty" != "0" ]; then git stash; fi
+}
+
+# Switch to gh-pages branch to sync it with current branch
+function add_docs_from_target() {
+    local DESTINATION_REPO_FOLDER
+    if [[ -z "${DESTINATION}" && -z "${CLONE}" ]] ; then
+        DESTINATION_REPO_FOLDER=${ROOT_FOLDER}
+    elif [[ "${CLONE}" == "yes" ]]; then
+        mkdir -p ${ROOT_FOLDER}/target
+        local clonedStatic=${ROOT_FOLDER}/target/spring-cloud-static
+        if [[ ! -e "${clonedStatic}/.git" ]]; then
+            echo "Cloning Spring Cloud Static to target"
+            git clone ${SPRING_CLOUD_STATIC_REPO} ${clonedStatic} && git checkout gh-pages
+        else
+            echo "Spring Cloud Static already cloned - will pull changes"
+            cd ${clonedStatic} && git checkout gh-pages && git pull origin gh-pages
+        fi
+        DESTINATION_REPO_FOLDER=${clonedStatic}/${REPO_NAME}
+        mkdir -p ${DESTINATION_REPO_FOLDER}
+    else
+        if [[ ! -e "${DESTINATION}/.git" ]]; then
+            echo "[${DESTINATION}] is not a git repository"
+            exit 1
+        fi
+        DESTINATION_REPO_FOLDER=${DESTINATION}/${REPO_NAME}
+        mkdir -p ${DESTINATION_REPO_FOLDER}
+        echo "Destination was provided [${DESTINATION}]"
+    fi
+    cd ${DESTINATION_REPO_FOLDER}
+    git checkout gh-pages
+    git pull origin gh-pages
+
+    # Add git branches
+    ###################################################################
+    if [[ -z "${VERSION}" ]] ; then
+        copy_docs_for_current_version
+    else
+        copy_docs_for_provided_version
+    fi
+    commit_changes_if_applicable
+}
+
+
+# Copies the docs by using the retrieved properties from Maven build
+function copy_docs_for_current_version() {
+    if [[ "${CURRENT_BRANCH}" == "master" ]] ; then
+        echo -e "Current branch is master - will copy the current docs only to the root folder"
+        for f in docs/target/generated-docs/*; do
+            file=${f#docs/target/generated-docs/*}
+            if ! git ls-files -i -o --exclude-standard --directory | grep -q ^$file$; then
+                # Not ignored...
+                cp -rf $f ${ROOT_FOLDER}/
+                git add -A ${ROOT_FOLDER}/$file
+            fi
+        done
+        COMMIT_CHANGES="yes"
+    else
+        echo -e "Current branch is [${CURRENT_BRANCH}]"
+        # http://stackoverflow.com/questions/29300806/a-bash-script-to-check-if-a-string-is-present-in-a-comma-separated-list-of-strin
+        if [[ ",${WHITELISTED_BRANCHES_VALUE}," = *",${CURRENT_BRANCH},"* ]] ; then
+            mkdir -p ${ROOT_FOLDER}/${CURRENT_BRANCH}
+            echo -e "Branch [${CURRENT_BRANCH}] is whitelisted! Will copy the current docs to the [${CURRENT_BRANCH}] folder"
+            for f in docs/target/generated-docs/*; do
+                file=${f#docs/target/generated-docs/*}
+                if ! git ls-files -i -o --exclude-standard --directory | grep -q ^$file$; then
+                    # Not ignored...
+                    # We want users to access 2.0.0.BUILD-SNAPSHOT/ instead of 1.0.0.RELEASE/spring-cloud.sleuth.html
+                    if [[ "${file}" == "${MAIN_ADOC_VALUE}.html" ]] ; then
+                        # We don't want to copy the spring-cloud-sleuth.html
+                        # we want it to be converted to index.html
+                        cp -rf $f ${ROOT_FOLDER}/${CURRENT_BRANCH}/index.html
+                        git add -A ${ROOT_FOLDER}/${CURRENT_BRANCH}/index.html
+                    else
+                        cp -rf $f ${ROOT_FOLDER}/${CURRENT_BRANCH}
+                        git add -A ${ROOT_FOLDER}/${CURRENT_BRANCH}/$file
+                    fi
+                fi
+            done
+            COMMIT_CHANGES="yes"
+        else
+            echo -e "Branch [${CURRENT_BRANCH}] is not on the white list! Check out the Maven [${WHITELIST_PROPERTY}] property in
+             [docs] module available under [docs] profile. Won't commit any changes to gh-pages for this branch."
+        fi
+    fi
+}
+
+# Copies the docs by using the explicitly provided version
+function copy_docs_for_provided_version() {
+    local FOLDER=${DESTINATION_REPO_FOLDER}/${VERSION}
+    mkdir -p ${FOLDER}
+    echo -e "Current tag is [v${VERSION}] Will copy the current docs to the [${FOLDER}] folder"
+    for f in ${ROOT_FOLDER}/docs/target/generated-docs/*; do
+        file=${f#${ROOT_FOLDER}/docs/target/generated-docs/*}
+        copy_docs_for_branch ${file} ${FOLDER}
+    done
+    COMMIT_CHANGES="yes"
+    CURRENT_BRANCH="v${VERSION}"
+}
+
+# Copies the docs from target to the provided destination
+# Params:
+# $1 - file from target
+# $2 - destination to which copy the files
+function copy_docs_for_branch() {
+    local file=$1
+    local destination=$2
+    if ! git ls-files -i -o --exclude-standard --directory | grep -q ^${file}$; then
+        # Not ignored...
+        # We want users to access 2.0.0.BUILD-SNAPSHOT/ instead of 1.0.0.RELEASE/spring-cloud.sleuth.html
+        if [[ ("${file}" == "${MAIN_ADOC_VALUE}.html") || ("${file}" == "${REPO_NAME}.html") ]] ; then
+            # We don't want to copy the spring-cloud-sleuth.html
+            # we want it to be converted to index.html
+            cp -rf $f ${destination}/index.html
+            git add -A ${destination}/index.html
+        else
+            cp -rf $f ${destination}
+            git add -A ${destination}/$file
+        fi
+    fi
+}
+
+function commit_changes_if_applicable() {
+    if [[ "${COMMIT_CHANGES}" == "yes" ]] ; then
+        COMMIT_SUCCESSFUL="no"
+        git commit -a -m "Sync docs from ${CURRENT_BRANCH} to gh-pages" && COMMIT_SUCCESSFUL="yes" || echo "Failed to commit changes"
+
+        # Uncomment the following push if you want to auto push to
+        # the gh-pages branch whenever you commit to master locally.
+        # This is a little extreme. Use with care!
+        ###################################################################
+        if [[ "${COMMIT_SUCCESSFUL}" == "yes" ]] ; then
+            git push origin gh-pages
+        fi
+    fi
+}
+
+# Switch back to the previous branch and exit block
+function checkout_previous_branch() {
+    # If -version was provided we need to come back to root project
+    cd ${ROOT_FOLDER}
+    git checkout ${CURRENT_BRANCH} || echo "Failed to check the branch... continuing with the script"
+    if [ "$dirty" != "0" ]; then git stash pop; fi
+    exit 0
+}
+
+# Assert if properties have been properly passed
+function assert_properties() {
+echo "VERSION [${VERSION}], DESTINATION [${DESTINATION}], CLONE [${CLONE}]"
+if [[ "${VERSION}" != "" && (-z "${DESTINATION}" && -z "${CLONE}") ]] ; then echo "Version was set but destination / clone was not!"; exit 1;fi
+if [[ ("${DESTINATION}" != "" && "${CLONE}" != "") && -z "${VERSION}" ]] ; then echo "Destination / clone was set but version was not!"; exit 1;fi
+if [[ "${DESTINATION}" != "" && "${CLONE}" == "yes" ]] ; then echo "Destination and clone was set. Pick one!"; exit 1;fi
+}
+
+# Prints the usage
+function print_usage() {
+cat <<EOF
+The idea of this script is to update gh-pages branch with the generated docs. Without any options
+the script will work in the following manner:
+
+- if there's no gh-pages / target for docs module then the script ends
+- for master branch the generated docs are copied to the root of gh-pages branch
+- for any other branch (if that branch is whitelisted) a subfolder with branch name is created
+    and docs are copied there
+- if the version switch is passed (-v) then a tag with (v) prefix will be retrieved and a folder
+    with that version number will be created in the gh-pages branch. WARNING! No whitelist verification will take place
+- if the destination switch is passed (-d) then the script will check if the provided dir is a git repo and then will
+    switch to gh-pages of that repo and copy the generated docs to `docs/<project-name>/<version>`
+- if the destination switch is passed (-d) then the script will check if the provided dir is a git repo and then will
+    switch to gh-pages of that repo and copy the generated docs to `docs/<project-name>/<version>`
+
+USAGE:
+
+You can use the following options:
+
+-v|--version        - the script will apply the whole procedure for a particular library version
+-d|--destination    - the root of destination folder where the docs should be copied. You have to use the full path.
+                        E.g. point to spring-cloud-static folder. Can't be used with (-c)
+-b|--build          - will run the standard build process after checking out the branch
+-c|--clone          - will automatically clone the spring-cloud-static repo instead of providing the destination.
+                        Obviously can't be used with (-d)
+
+EOF
+}
+
+
+# ==========================================
+#    ____   ____ _____  _____ _____ _______
+#  / ____|/ ____|  __ \|_   _|  __ \__   __|
+# | (___ | |    | |__) | | | | |__) | | |
+#  \___ \| |    |  _  /  | | |  ___/  | |
+#  ____) | |____| | \ \ _| |_| |      | |
+# |_____/ \_____|_|  \_\_____|_|      |_|
+#
+# ==========================================
+
+while [[ $# > 0 ]]
+do
+key="$1"
+case ${key} in
+    -v|--version)
+    VERSION="$2"
+    shift # past argument
+    ;;
+    -d|--destination)
+    DESTINATION="$2"
+    shift # past argument
+    ;;
+    -b|--build)
+    BUILD="yes"
+    ;;
+    -c|--clone)
+    CLONE="yes"
+    ;;
+    -h|--help)
+    print_usage
+    exit 0
+    ;;
+    *)
+    echo "Invalid option: [$1]"
+    print_usage
+    exit 1
+    ;;
+esac
+shift # past argument or value
+done
+
+assert_properties
+set_default_props
+check_if_anything_to_sync
+if [[ -z "${VERSION}" ]] ; then
+    retrieve_current_branch
+else
+    switch_to_tag
+fi
+build_docs_if_applicable
+retrieve_doc_properties
+stash_changes
+add_docs_from_target
+checkout_previous_branch

docs/src/main/asciidoc/kafka-streams.adoc

@@ -1,4 +1,6 @@
-== Usage
+== Kafka Streams Binder
+
+=== Usage
 
 For using the Kafka Streams binder, you just need to add it to your Spring Cloud Stream application, using the following
 Maven coordinates:
@@ -11,7 +13,8 @@ Maven coordinates:
 </dependency>
 ----
 
-== Kafka Streams Binder Overview
+
+=== Overview
 
 Spring Cloud Stream's Apache Kafka support also includes a binder implementation designed explicitly for Apache Kafka
 Streams binding. With this native integration, a Spring Cloud Stream "processor" application can directly use the
@@ -20,17 +23,19 @@ https://kafka.apache.org/documentation/streams/developer-guide[Apache Kafka Stre
 Kafka Streams binder implementation builds on the foundation provided by the http://docs.spring.io/spring-kafka/reference/html/_reference.html#kafka-streams[Kafka Streams in Spring Kafka]
 project.
 
+Kafka Streams binder provides binding capabilities for the three major types in Kafka Streams - KStream, KTable and GlobalKTable.
+
 As part of this native integration, the high-level https://docs.confluent.io/current/streams/developer-guide/dsl-api.html[Streams DSL]
-provided by the Kafka Streams API is available for use in the business logic, too.
+provided by the Kafka Streams API is available for use in the business logic.
 
 An early version of the https://docs.confluent.io/current/streams/developer-guide/processor-api.html[Processor API]
 support is available as well.
 
-As noted early-on, Kafka Streams support in Spring Cloud Stream strictly only available for use in the Processor model.
+As noted early-on, Kafka Streams support in Spring Cloud Stream is strictly only available for use in the Processor model.
 A model in which the messages read from an inbound topic, business processing can be applied, and the transformed messages
 can be written to an outbound topic. It can also be used in Processor applications with a no-outbound destination.
 
-=== Streams DSL
+==== Streams DSL
 
 This application consumes data from a Kafka topic (e.g., `words`), computes word count for each unique word in a 5 seconds
 time window, and the computed results are sent to a downstream topic (e.g., `counts`) for further processing.
@@ -73,16 +78,15 @@ KStream objects. As a developer, you can exclusively focus on the business aspec
 required in the processor. Setting up the Streams DSL specific configuration required by the Kafka Streams infrastructure
 is automatically handled by the framework.
 
-== Configuration Options
+=== Configuration Options
 
 This section contains the configuration options used by the Kafka Streams binder.
 
 For common configuration options and properties pertaining to binder, refer to the <<binding-properties,core documentation>>.
 
-=== Kafka Streams Properties
+==== Kafka Streams Properties
 
 The following properties are available at the binder level and must be prefixed with `spring.cloud.stream.kafka.streams.binder.`
-literal.
 
 configuration::
   Map with a key/value pair containing properties pertaining to Apache Kafka Streams API.
@@ -113,14 +117,13 @@ serdeError::
 +
 Default: `logAndFail`
 applicationId::
- Application ID for all the stream configurations in the current application context.
- You can override the application id for an individual `StreamListener` method using the `group` property on the binding.
- You have to ensure that you are using the same group name for all input bindings in the case of multiple inputs on the same methods.
+ Convenient way to set the application.id for the Kafka Streams application globally at the binder level.
+ If the application contains multiple `StreamListener` methods, then application.id should be set at the binding level per input binding.
 +
-Default: `default`
+Default: `none`
 
 The following properties are _only_ available for Kafka Streams producers and must be prefixed with `spring.cloud.stream.kafka.streams.bindings.<binding name>.producer.`
-literal.
+For convenience, if there multiple output bindings and they all require a common value, that can be configured by using the prefix `spring.cloud.stream.kafka.streams.default.producer.`.
 
 keySerde::
   key serde to use
@@ -135,9 +138,13 @@ useNativeEncoding::
 +
 Default: `false`.
 
-The following properties are _only_ available for Kafka Streams consumers and must be prefixed with `spring.cloud.stream.kafka.streams.bindings.<binding name>.consumer.`
-literal.
+The following properties are available for Kafka Streams consumers and must be prefixed with `spring.cloud.stream.kafka.streams.bindings.<binding-name>.consumer.`
+For convenience, if there are multiple input bindings and they all require a common value, that can be configured by using the prefix `spring.cloud.stream.kafka.streams.default.consumer.`.
 
+applicationId::
+ Setting application.id per input binding.
++
+Default: `none`
 keySerde::
   key serde to use
 +
@@ -158,8 +165,17 @@ dlqName::
   DLQ topic name.
 +
 Default: `none`.
+startOffset::
+  Offset to start from if there is no committed offset to consume from.
+  This is mostly used when the consumer is consuming from a topic for the first time. Kafka Streams uses `earliest` as the default strategy and
+  the binder uses the same default. This can be overridden to `latest` using this property.
++
+Default: `earliest`.
 
-=== TimeWindow properties:
+Note: Using `resetOffsets` on the consumer does not have any effect on Kafka Streams binder.
+Unlike the message channel based binder, Kafka Streams binder does not seek to beginning or end on demand.
+
+==== TimeWindow properties:
 
 Windowing is an important concept in stream processing applications. Following properties are available to configure
 time-window computations.
@@ -174,14 +190,14 @@ spring.cloud.stream.kafka.streams.timeWindow.advanceBy::
 +
 Default: `none`.
 
-== Multiple Input Bindings
+=== Multiple Input Bindings
 
 For use cases that requires multiple incoming KStream objects or a combination of KStream and KTable objects, the Kafka
 Streams binder provides multiple bindings support.
 
 Let's see it in action.
 
-=== Multiple Input Bindings as a Sink
+==== Multiple Input Bindings as a Sink
 
 [source]
 ----
@@ -218,6 +234,12 @@ through the following property.
 spring.cloud.stream.kafka.streams.bindings.inputTable.consumer.materializedAs: all-songs
 ----
 
+The above example shows the use of KTable as an input binding.
+The binder also supports input bindings for GlobalKTable.
+GlobalKTable binding is useful when you have to ensure that all instances of your application has access to the data updates from the topic.
+KTable and GlobalKTable bindings are only available on the input.
+Binder supports both input and output bindings for KStream.
+
 === Multiple Input Bindings as a Processor
 
 [source]
@@ -242,7 +264,7 @@ interface KStreamKTableBinding extends KafkaStreamsProcessor {
 
 ----
 
-== Multiple Output Bindings (aka Branching)
+=== Multiple Output Bindings (aka Branching)
 
 Kafka Streams allow outbound data to be split into multiple topics based on some predicates. The Kafka Streams binder provides
 support for this feature without compromising the programming model exposed through `StreamListener` in the end user application.
@@ -328,20 +350,19 @@ spring.cloud.stream.bindings.input:
     headerMode: raw
 ----
 
-== Message Conversion
+=== Record Value Conversion
 
-Similar to message-channel based binder applications, the Kafka Streams binder adapts to the out-of-the-box content-type
-conversions without any compromise.
+Kafka Streams binder can marshal producer/consumer values based on a content type and the converters provided out of the box in Spring Cloud Stream.
 
-It is typical for Kafka Streams operations to know the type of SerDe’s used to transform the key and value correctly.
-Therefore, it may be more natural to rely on the SerDe facilities provided by the Apache Kafka Streams library itself at
-the inbound and outbound conversions rather than using the content-type conversions offered by the framework.
-On the other hand, you might be already familiar with the content-type conversion patterns provided by the framework, and
-that, you'd like to continue using for inbound and outbound conversions.
+It is typical for Kafka Streams applications to provide `Serde` classes.
+Therefore, it may be more natural to rely on the SerDe facilities provided by the Apache Kafka Streams library itself for data conversion on inbound and outbound
+rather than rely on the content-type conversions offered by the binder.
+On the other hand, you might be already familiar with the content-type conversion patterns provided by Spring Cloud Stream and
+would like to continue using that for inbound and outbound conversions.
 
-Both the options are supported in the Kafka Streams binder implementation.
+Both the options are supported in the Kafka Streams binder implementation. See below for more details.
 
-==== Outbound serialization
+===== Outbound serialization
 
 If native encoding is disabled (which is the default), then the framework will convert the message using the contentType
 set by the user (otherwise, the default `application/json` will be applied). It will ignore any SerDe set on the outbound
@@ -430,7 +451,7 @@ spring.cloud.stream.bindings.output2.contentType: application/java-serialzied-ob
 spring.cloud.stream.bindings.output3.contentType: application/octet-stream
 ----
 
-==== Inbound Deserialization
+===== Inbound Deserialization
 
 Similar rules apply to data deserialization on the inbound.
 
@@ -485,7 +506,7 @@ As in the case of KStream branching on the outbound, the benefit of setting valu
 multiple input bindings (multiple KStreams object) and they all require separate value SerDe's, then you can configure
 them individually. If you use the common configuration approach, then this feature won't be applicable.
 
-== Error Handling
+=== Error Handling
 
 Apache Kafka Streams provide the capability for natively handling exceptions from deserialization errors.
 For details on this support, please see https://cwiki.apache.org/confluence/display/KAFKA/KIP-161%3A+streams+deserialization+exception+handlers[this]
@@ -526,7 +547,7 @@ that if there are multiple `StreamListener` methods in the same application, thi
 * The exception handling for deserialization works consistently with native deserialization and framework provided message
 conversion.
 
-=== Handling Non-Deserialization Exceptions
+==== Handling Non-Deserialization Exceptions
 
 For general error handling in Kafka Streams binder, it is up to the end user applications to handle application level errors.
 As a side effect of providing a DLQ for deserialization exception handlers, Kafka Streams binder provides a way to get
@@ -576,7 +597,7 @@ public KStream<?, WordCount> process(KStream<Object, String> input) {
 }
 ----
 
-== State Store
+=== State Store
 
 State store is created automatically by Kafka Streams when the DSL is used.
 When processor API is used, you need to register a state store manually. In order to do so, you can use `KafkaStreamsStateStore` annotation.
@@ -608,7 +629,7 @@ Processor<Object, Product>() {
 }
 ----
 
-== Interactive Queries
+=== Interactive Queries
 
 As part of the public Kafka Streams binder API, we expose a class called `InteractiveQueryService`.
 You can access this as a Spring bean in your application. An easy way to get access to this bean from your application is to "autowire" the bean.
@@ -653,7 +674,7 @@ else {
 }
 ----
 
-== Accessing the underlying KafkaStreams object
+=== Accessing the underlying KafkaStreams object
 
 `StreamBuilderFactoryBean` from spring-kafka that is responsible for constructing the `KafkaStreams` object can be accessed programmatically.
 Each `StreamBuilderFactoryBean` is registered as `stream-builder` and appended with the `StreamListener` method name.
@@ -667,7 +688,7 @@ StreamsBuilderFactoryBean streamsBuilderFactoryBean = context.getBean("&stream-b
 			KafkaStreams kafkaStreams = streamsBuilderFactoryBean.getKafkaStreams();
 ----
 
-== State Cleanup
+=== State Cleanup
 
 By default, the `Kafkastreams.cleanup()` method is called when the binding is stopped.
 See https://docs.spring.io/spring-kafka/reference/html/_reference.html#_configuration[the Spring Kafka documentation].

docs/src/main/asciidoc/overview.adoc

@@ -5,7 +5,9 @@ It contains information about its design, usage, and configuration options, as w
 In addition, this guide explains the Kafka Streams binding capabilities of Spring Cloud Stream.
 --
 
-== Usage
+== Apache Kafka Binder
+
+=== Usage
 
 To use Apache Kafka binder, you need to add `spring-cloud-stream-binder-kafka` as a dependency to your Spring Cloud Stream application, as shown in the following example for Maven:
 
@@ -27,12 +29,12 @@ Alternatively, you can also use the Spring Cloud Stream Kafka Starter, as shown
 </dependency>
 ----
 
-== Apache Kafka Binder Overview
+=== Overview
 
 The following image shows a simplified diagram of how the Apache Kafka binder operates:
 
 .Kafka Binder
-image::images/kafka-binder.png[width=300,scaledwidth="50%"]
+image::{github-raw}/docs/src/main/asciidoc/images/kafka-binder.png[width=300,scaledwidth="50%"]
 
 The Apache Kafka Binder implementation maps each destination to an Apache Kafka topic.
 The consumer group maps directly to the same Apache Kafka concept.
@@ -43,13 +45,13 @@ This client can communicate with older brokers (see the Kafka documentation), bu
 For example, with versions earlier than 0.11.x.x, native headers are not supported.
 Also, 0.11.x.x does not support the `autoAddPartitions` property.
 
-== Configuration Options
+=== Configuration Options
 
 This section contains the configuration options used by the Apache Kafka binder.
 
 For common configuration options and properties pertaining to binder, see the <<binding-properties,core documentation>>.
 
-=== Kafka Binder Properties
+==== Kafka Binder Properties
 
 spring.cloud.stream.kafka.binder.brokers::
 A list of brokers to which the Kafka binder connects.
@@ -63,11 +65,13 @@ Default: `9092`.
 spring.cloud.stream.kafka.binder.configuration::
 Key/Value map of client properties (both producers and consumer) passed to all clients created by the binder.
 Due to the fact that these properties are used by both producers and consumers, usage should be restricted to common properties -- for example, security settings.
+Unknown Kafka producer or consumer properties provided through this configuration are filtered out and not allowed to propagate.
 Properties here supersede any properties set in boot.
 +
 Default: Empty map.
 spring.cloud.stream.kafka.binder.consumerProperties::
 Key/Value map of arbitrary Kafka client consumer properties.
+In addition to support known Kafka consumer properties, unknown consumer properties are allowed here as well.
 Properties here supersede any properties set in boot and in the `configuration` property above.
 +
 Default: Empty map.
@@ -94,6 +98,7 @@ It can be superseded by the `partitionCount` setting of the producer or by the v
 Default: `1`.
 spring.cloud.stream.kafka.binder.producerProperties::
 Key/Value map of arbitrary Kafka client producer properties.
+In addition to support known Kafka producer properties, unknown producer properties are allowed here as well.
 Properties here supersede any properties set in boot and in the `configuration` property above.
 +
 Default: Empty map.
@@ -135,7 +140,7 @@ Use this, for example, if you wish to customize the trusted packages in a `Defau
 Default: none.
 
 [[kafka-consumer-properties]]
-=== Kafka Consumer Properties
+==== Kafka Consumer Properties
 
 The following properties are available for Kafka consumers only and
 must be prefixed with `spring.cloud.stream.kafka.bindings.<channelName>.consumer.`.
@@ -191,6 +196,7 @@ If not set (the default), it effectively has the same value as `enableDlq`, auto
 Default: not set.
 resetOffsets::
 Whether to reset offsets on the consumer to the value provided by startOffset.
+Must be false if a `KafkaRebalanceListener` is provided; see <<rebalance-listener>>.
 +
 Default: `false`.
 startOffset::
@@ -212,6 +218,8 @@ Starting with version 2.0, messages sent to the DLQ topic are enhanced with the
 Default: `false`.
 configuration::
 Map with a key/value pair containing generic Kafka consumer properties.
+In addition to having Kafka consumer properties, other configuration properties can be passed here.
+For example some properties needed by the application such as `spring.cloud.stream.kafka.bindings.input.consumer.configuration.foo=bar`.
 +
 Default: Empty map.
 dlqName::
@@ -248,7 +256,7 @@ This can be configured using the `configuration` property above.
 Default: `false`
 
 [[kafka-producer-properties]]
-=== Kafka Producer Properties
+==== Kafka Producer Properties
 
 The following properties are available for Kafka producers only and
 must be prefixed with `spring.cloud.stream.kafka.bindings.<channelName>.producer.`.
@@ -309,11 +317,11 @@ If a topic already exists with a smaller partition count and `autoAddPartitions`
 If a topic already exists with a smaller partition count and `autoAddPartitions` is enabled, new partitions are added.
 If a topic already exists with a larger number of partitions than the maximum of (`minPartitionCount` or `partitionCount`), the existing partition count is used.
 
-=== Usage examples
+==== Usage examples
 
 In this section, we show the use of the preceding properties for specific scenarios.
 
-==== Example: Setting `autoCommitOffset` to `false` and Relying on Manual Acking
+===== Example: Setting `autoCommitOffset` to `false` and Relying on Manual Acking
 
 This example illustrates how one may manually acknowledge offsets in a consumer application.
 
@@ -341,7 +349,7 @@ public class ManuallyAcknowdledgingConsumer {
 }
 ----
 
-==== Example: Security Configuration
+===== Example: Security Configuration
 
 Apache Kafka 0.9 supports secure connections between client and brokers.
 To take advantage of this feature, follow the guidelines in the http://kafka.apache.org/090/documentation.html#security_configclients[Apache Kafka Documentation] as well as the Kafka 0.9 http://docs.confluent.io/2.0.0/kafka/security.html[security guidelines from the Confluent documentation].
@@ -360,7 +368,7 @@ When using Kerberos, follow the instructions in the http://kafka.apache.org/090/
 
 Spring Cloud Stream supports passing JAAS configuration information to the application by using a JAAS configuration file and using Spring Boot properties.
 
-===== Using JAAS Configuration Files
+====== Using JAAS Configuration Files
 
 The JAAS and (optionally) krb5 file locations can be set for Spring Cloud Stream applications by using system properties.
 The following example shows how to launch a Spring Cloud Stream application with SASL and Kerberos by using a JAAS configuration file:
@@ -373,7 +381,7 @@ The following example shows how to launch a Spring Cloud Stream application with
    --spring.cloud.stream.kafka.binder.configuration.security.protocol=SASL_PLAINTEXT
 ----
 
-===== Using Spring Boot Properties
+====== Using Spring Boot Properties
 
 As an alternative to having a JAAS configuration file, Spring Cloud Stream provides a mechanism for setting up the JAAS configuration for Spring Cloud Stream applications by using Spring Boot properties.
 
@@ -430,7 +438,7 @@ Consequently, relying on Spring Cloud Stream to create/modify topics may fail.
 In secure environments, we strongly recommend creating topics and managing ACLs administratively by using Kafka tooling.
 
 [[pause-resume]]
-==== Example: Pausing and Resuming the Consumer
+===== Example: Pausing and Resuming the Consumer
 
 If you wish to suspend consumption but not cause a partition rebalance, you can pause and resume the consumer.
 This is facilitated by adding the `Consumer` as a parameter to your `@StreamListener`.
@@ -470,7 +478,7 @@ public class Application {
 ----
 
 [[kafka-error-channels]]
-== Error Channels
+=== Error Channels
 
 Starting with version 1.3, the binder unconditionally sends exceptions to an error channel for each consumer destination and can also be configured to send async producer send failures to an error channel.
 See <<spring-cloud-stream-overview-error-handling>> for more information.
@@ -484,10 +492,79 @@ There is no automatic handling of producer exceptions (such as sending to a <<ka
 You can consume these exceptions with your own Spring Integration flow.
 
 [[kafka-metrics]]
-== Kafka Metrics
+=== Kafka Metrics
 
 Kafka binder module exposes the following metrics:
 
 `spring.cloud.stream.binder.kafka.offset`: This metric indicates how many messages have not been yet consumed from a given binder's topic by a given consumer group.
 The metrics provided are based on the Mircometer metrics library. The metric contains the consumer group information, topic and the actual lag in committed offset from the latest offset on the topic.
 This metric is particularly useful for providing auto-scaling feedback to a PaaS platform.
+
+[[kafka-tombstones]]
+=== Tombstone Records (null record values)
+
+When using compacted topics, a record with a `null` value (also called a tombstone record) represents the deletion of a key.
+To receive such messages in a `@StreamListener` method, the parameter must be marked as not required to receive a `null` value argument.
+
+====
+[source, java]
+----
+@StreamListener(Sink.INPUT)
+public void in(@Header(KafkaHeaders.RECEIVED_MESSAGE_KEY) byte[] key,
+               @Payload(required = false) Customer customer) {
+    // customer is null if a tombstone record
+    ...
+}
+----
+====
+
+[[rebalance-listener]]
+=== Using a KafkaRebalanceListener
+
+Applications may wish to seek topics/partitions to arbitrary offsets when the partitions are initially assigned, or perform other operations on the consumer.
+Starting with version 2.1, if you provide a single `KafkaRebalanceListener` bean in the application context, it will be wired into all Kafka consumer bindings.
+
+====
+[source, java]
+----
+public interface KafkaBindingRebalanceListener {
+
+	/**
+	 * Invoked by the container before any pending offsets are committed.
+	 * @param bindingName the name of the binding.
+	 * @param consumer the consumer.
+	 * @param partitions the partitions.
+	 */
+	default void onPartitionsRevokedBeforeCommit(String bindingName, Consumer<?, ?> consumer,
+			Collection<TopicPartition> partitions) {
+
+	}
+
+	/**
+	 * Invoked by the container after any pending offsets are committed.
+	 * @param bindingName the name of the binding.
+	 * @param consumer the consumer.
+	 * @param partitions the partitions.
+	 */
+	default void onPartitionsRevokedAfterCommit(String bindingName, Consumer<?, ?> consumer, Collection<TopicPartition> partitions) {
+
+	}
+
+	/**
+	 * Invoked when partitions are initially assigned or after a rebalance.
+	 * Applications might only want to perform seek operations on an initial assignment.
+	 * @param bindingName the name of the binding.
+	 * @param consumer the consumer.
+	 * @param partitions the partitions.
+	 * @param initial true if this is the initial assignment.
+	 */
+	default void onPartitionsAssigned(String bindingName, Consumer<?, ?> consumer, Collection<TopicPartition> partitions,
+			boolean initial) {
+
+	}
+
+}
+----
+====
+
+You cannot set the `resetOffsets` consumer property to `true` when you provide a rebalance listener.

docs/src/main/asciidoc/partitions.adoc

@@ -1,4 +1,4 @@
-== Partitioning with the Kafka Binder
+=== Partitioning with the Kafka Binder
 
 Apache Kafka supports topic partitioning natively.
 

docs/src/main/asciidoc/spring-cloud-stream-binder-kafka.adoc

@@ -1,3 +1,13 @@
+:github-tag: master
+:github-repo: spring-cloud/spring-cloud-stream-binder-kafka
+:github-raw: https://raw.githubusercontent.com/{github-repo}/{github-tag}
+:github-code: https://github.com/{github-repo}/tree/{github-tag}
+:toc: left
+:toclevels: 8
+:nofooter:
+:sectlinks: true
+
+
 [[spring-cloud-stream-binder-kafka-reference]]
 = Spring Cloud Stream Kafka Binder Reference Guide
 Sabby Anandan, Marius Bogoevici, Eric Bottard, Mark Fisher, Ilayaperumal Gopinathan, Gunnar Hillert, Mark Pollack, Patrick Peralta, Glenn Renfro, Thomas Risberg, Dave Syer, David Turanski, Janne Valkealahti, Benjamin Klein, Henryk Konsek, Gary Russell
@@ -28,6 +38,8 @@ include::dlq.adoc[]
 
 include::partitions.adoc[]
 
+include::kafka-streams.adoc[]
+
 = Appendices
 [appendix]
 include::building.adoc[]

docs/src/main/ruby/generate_readme.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env ruby
+
+base_dir = File.join(File.dirname(__FILE__),'../../..')
+src_dir = File.join(base_dir, "/src/main/asciidoc")
+require 'asciidoctor'
+require 'optparse'
+
+options = {}
+file = "#{src_dir}/README.adoc"
+
+OptionParser.new do |o|
+  o.on('-o OUTPUT_FILE', 'Output file (default is stdout)') { |file| options[:to_file] = file unless file=='-' }
+  o.on('-h', '--help') { puts o; exit }
+  o.parse!
+end
+
+file = ARGV[0] if ARGV.length>0
+
+# Copied from https://github.com/asciidoctor/asciidoctor-extensions-lab/blob/master/scripts/asciidoc-coalescer.rb
+doc = Asciidoctor.load_file file, safe: :unsafe, header_only: true, attributes: options[:attributes]
+header_attr_names = (doc.instance_variable_get :@attributes_modified).to_a
+header_attr_names.each {|k| doc.attributes[%(#{k}!)] = '' unless doc.attr? k }
+attrs = doc.attributes
+attrs['allow-uri-read'] = true
+puts attrs
+
+out = "// Do not edit this file (e.g. go instead to src/main/asciidoc)\n\n"
+doc = Asciidoctor.load_file file, safe: :unsafe, parse: false, attributes: attrs
+out << doc.reader.read
+
+unless options[:to_file]
+  puts out
+else
+  File.open(options[:to_file],'w+') do |file|
+    file.write(out)
+  end
+end

pom.xml

@@ -2,27 +2,27 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>spring-cloud-stream-binder-kafka-parent</artifactId>
-	<version>2.1.0.M2</version>
+	<version>2.1.0.RC2</version>
 	<packaging>pom</packaging>
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-build</artifactId>
-		<version>2.1.0.M1</version>
+		<version>2.1.0.RC2</version>
 		<relativePath />
 	</parent>
 	<properties>
 		<java.version>1.8</java.version>
-		<spring-kafka.version>2.2.0.M2</spring-kafka.version>
-		<spring-integration-kafka.version>3.1.0.M1</spring-integration-kafka.version>
+		<spring-kafka.version>2.2.0.RELEASE</spring-kafka.version>
+		<spring-integration-kafka.version>3.1.0.RELEASE</spring-integration-kafka.version>
 		<kafka.version>2.0.0</kafka.version>
-		<spring-cloud-stream.version>2.1.0.M2</spring-cloud-stream.version>
+		<spring-cloud-stream.version>2.1.0.RC2</spring-cloud-stream.version>
 	</properties>
 	<modules>
 		<module>spring-cloud-stream-binder-kafka</module>
 		<module>spring-cloud-starter-stream-kafka</module>
-		<module>spring-cloud-stream-binder-kafka-docs</module>
 		<module>spring-cloud-stream-binder-kafka-core</module>
 		<module>spring-cloud-stream-binder-kafka-streams</module>
+		<module>docs</module>
     </modules>
 
 	<dependencyManagement>
@@ -109,25 +109,10 @@
 				</exclusions>
 			</dependency>
 			<dependency>
-				<groupId>org.apache.kafka</groupId>
-				<artifactId>kafka_2.11</artifactId>
-				<classifier>test</classifier>
+				<groupId>org.springframework.cloud</groupId>
+				<artifactId>spring-cloud-stream-schema</artifactId>
+				<version>${spring-cloud-stream.version}</version>
 				<scope>test</scope>
-				<version>${kafka.version}</version>
-				<exclusions>
-					<exclusion>
-						<groupId>jline</groupId>
-						<artifactId>jline</artifactId>
-					</exclusion>
-					<exclusion>
-						<groupId>org.slf4j</groupId>
-						<artifactId>slf4j-log4j12</artifactId>
-					</exclusion>
-					<exclusion>
-						<groupId>log4j</groupId>
-						<artifactId>log4j</artifactId>
-					</exclusion>
-				</exclusions>
 			</dependency>
 		</dependencies>
 	</dependencyManagement>
@@ -167,11 +152,24 @@
 						<version>${spring-cloud-stream.version}</version>
 					</dependency>
 				</dependencies>
-				<configuration>
-					<configLocation>checkstyle.xml</configLocation>
-					<headerLocation>checkstyle-header.txt</headerLocation>
-					<includeTestSourceDirectory>true</includeTestSourceDirectory>
-				</configuration>
+				<executions>
+					<execution>
+						<id>checkstyle-validation</id>
+						<phase>validate</phase>
+						<configuration>
+							<configLocation>checkstyle.xml</configLocation>
+							<headerLocation>checkstyle-header.txt</headerLocation>
+							<suppressionsLocation>checkstyle-suppressions.xml</suppressionsLocation>
+							<encoding>UTF-8</encoding>
+							<consoleOutput>true</consoleOutput>
+							<failsOnError>true</failsOnError>
+							<includeTestSourceDirectory>true</includeTestSourceDirectory>
+						</configuration>
+						<goals>
+							<goal>check</goal>
+						</goals>
+					</execution>
+				</executions>
 			</plugin>
 		</plugins>
 	</build>

spring-cloud-starter-stream-kafka/pom.xml

@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-stream-binder-kafka-parent</artifactId>
-		<version>2.1.0.M2</version>
+		<version>2.1.0.RC2</version>
 	</parent>
 	<artifactId>spring-cloud-starter-stream-kafka</artifactId>
 	<description>Spring Cloud Starter Stream Kafka</description>

spring-cloud-stream-binder-kafka-core/pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-stream-binder-kafka-parent</artifactId>
-		<version>2.1.0.M2</version>
+		<version>2.1.0.RC2</version>
 	</parent>
 	<artifactId>spring-cloud-stream-binder-kafka-core</artifactId>
 	<description>Spring Cloud Stream Kafka Binder Core</description>

spring-cloud-stream-binder-kafka-core/src/main/java/org/springframework/cloud/stream/binder/kafka/properties/JaasLoginModuleConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 the original author or authors.
+ * Copyright 2016-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,6 +21,7 @@ import java.util.Map;
 
 import javax.security.auth.login.AppConfigurationEntry;
 
+import org.springframework.kafka.security.jaas.KafkaJaasLoginModuleInitializer;
 import org.springframework.util.Assert;
 
 /**
@@ -28,17 +29,18 @@ import org.springframework.util.Assert;
  * for the Kafka or Zookeeper client.
  *
  * @author Marius Bogoevici
+ * @author Soby Chacko
  */
 public class JaasLoginModuleConfiguration {
 
 	private String loginModule = "com.sun.security.auth.module.Krb5LoginModule";
 
-	private AppConfigurationEntry.LoginModuleControlFlag controlFlag = AppConfigurationEntry.LoginModuleControlFlag.REQUIRED;
+	private KafkaJaasLoginModuleInitializer.ControlFlag controlFlag = KafkaJaasLoginModuleInitializer.ControlFlag.REQUIRED;
 
-	private Map<String,String> options = new HashMap<>();
+	private Map<String, String> options = new HashMap<>();
 
 	public String getLoginModule() {
-		return loginModule;
+		return this.loginModule;
 	}
 
 	public void setLoginModule(String loginModule) {
@@ -46,35 +48,17 @@ public class JaasLoginModuleConfiguration {
 		this.loginModule = loginModule;
 	}
 
-	public String getControlFlag() {
-		return controlFlag.toString();
-	}
-
-	public AppConfigurationEntry.LoginModuleControlFlag getControlFlagValue() {
-		return controlFlag;
+	public KafkaJaasLoginModuleInitializer.ControlFlag getControlFlag() {
+		return this.controlFlag;
 	}
 
 	public void setControlFlag(String controlFlag) {
 		Assert.notNull(controlFlag, "cannot be null");
-		if (AppConfigurationEntry.LoginModuleControlFlag.OPTIONAL.equals(controlFlag)) {
-			this.controlFlag = AppConfigurationEntry.LoginModuleControlFlag.OPTIONAL;
-		}
-		else if (AppConfigurationEntry.LoginModuleControlFlag.REQUIRED.equals(controlFlag)) {
-			this.controlFlag = AppConfigurationEntry.LoginModuleControlFlag.REQUIRED;
-		}
-		else if (AppConfigurationEntry.LoginModuleControlFlag.REQUISITE.equals(controlFlag)) {
-			this.controlFlag = AppConfigurationEntry.LoginModuleControlFlag.REQUISITE;
-		}
-		else if (AppConfigurationEntry.LoginModuleControlFlag.SUFFICIENT.equals(controlFlag)) {
-			this.controlFlag = AppConfigurationEntry.LoginModuleControlFlag.SUFFICIENT;
-		}
-		else {
-			throw new IllegalArgumentException(controlFlag + " is not a supported control flag");
-		}
+		this.controlFlag = KafkaJaasLoginModuleInitializer.ControlFlag.valueOf(controlFlag.toUpperCase());
 	}
 
 	public Map<String, String> getOptions() {
-		return options;
+		return this.options;
 	}
 
 	public void setOptions(Map<String, String> options) {

spring-cloud-stream-binder-kafka-core/src/main/java/org/springframework/cloud/stream/binder/kafka/properties/KafkaBinderConfigurationProperties.java

@@ -21,17 +21,28 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import javax.validation.constraints.AssertTrue;
+import javax.validation.constraints.Min;
+import javax.validation.constraints.NotNull;
+
 import org.apache.kafka.clients.consumer.ConsumerConfig;
 import org.apache.kafka.clients.producer.ProducerConfig;
 
 import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.boot.context.properties.DeprecatedConfigurationProperty;
+import org.springframework.cloud.stream.binder.HeaderMode;
+import org.springframework.cloud.stream.binder.ProducerProperties;
+import org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties.CompressionType;
+import org.springframework.expression.Expression;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 import org.springframework.util.StringUtils;
 
 /**
+ * Configuration properties for the Kafka binder.
+ * The properties in this class are prefixed with <b>spring.cloud.stream.kafka.binder</b>.
+ *
  * @author David Turanski
  * @author Ilayaperumal Gopinathan
  * @author Marius Bogoevici
@@ -125,6 +136,10 @@ public class KafkaBinderConfigurationProperties {
 		this.kafkaProperties = kafkaProperties;
 	}
 
+	public KafkaProperties getKafkaProperties() {
+		return this.kafkaProperties;
+	}
+
 	public Transaction getTransaction() {
 		return this.transaction;
 	}
@@ -155,7 +170,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @return the window.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -166,7 +181,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @return the count.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -177,7 +192,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @return the timeout.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -237,7 +252,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @param offsetUpdateTimeWindow the window.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -248,7 +263,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @param offsetUpdateCount the count.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -259,7 +274,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @param offsetUpdateShutdownTimeout the timeout.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -313,8 +328,11 @@ public class KafkaBinderConfigurationProperties {
 
 	/**
 	 * Converts an array of host values to a comma-separated String.
-	 *
 	 * It will append the default port value, if not already specified.
+	 *
+	 * @param hosts host string
+	 * @param defaultPort port
+	 * @return formatted connection string
 	 */
 	private String toConnectionString(String[] hosts, String defaultPort) {
 		String[] fullyFormattedHosts = new String[hosts.length];
@@ -332,7 +350,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @return the wait.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -343,7 +361,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer user.
 	 * @param maxWait the wait.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -374,7 +392,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @return the size.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -385,7 +403,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @param fetchSize the size.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -412,7 +430,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @return the queue size.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -423,7 +441,7 @@ public class KafkaBinderConfigurationProperties {
 	/**
 	 * No longer used.
 	 * @param queueSize the queue size.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0")
@@ -451,7 +469,7 @@ public class KafkaBinderConfigurationProperties {
 	 * No longer used; set properties such as this via {@link #getConfiguration()
 	 * configuration}.
 	 * @return the size.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0, set properties such as this via 'configuration'")
@@ -463,7 +481,7 @@ public class KafkaBinderConfigurationProperties {
 	 * No longer used; set properties such as this via {@link #getConfiguration()
 	 * configuration}.
 	 * @param socketBufferSize the size.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	@DeprecatedConfigurationProperty(reason = "Not used since 2.0, set properties such as this via 'configuration'")
@@ -472,7 +490,7 @@ public class KafkaBinderConfigurationProperties {
 	}
 
 	public Map<String, String> getConfiguration() {
-		return configuration;
+		return this.configuration;
 	}
 
 	public void setConfiguration(Map<String, String> configuration) {
@@ -515,21 +533,7 @@ public class KafkaBinderConfigurationProperties {
 		consumerConfiguration.putAll(this.consumerProperties);
 		// Override Spring Boot bootstrap server setting if left to default with the value
 		// configured in the binder
-		if (ObjectUtils.isEmpty(consumerConfiguration.get(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG))) {
-			consumerConfiguration.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, getKafkaConnectionString());
-		}
-		else {
-			Object boostrapServersConfig = consumerConfiguration.get(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG);
-			if (boostrapServersConfig instanceof List) {
-				@SuppressWarnings("unchecked")
-				List<String> bootStrapServers = (List<String>) consumerConfiguration
-						.get(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG);
-				if (bootStrapServers.size() == 1 && bootStrapServers.get(0).equals("localhost:9092")) {
-					consumerConfiguration.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, getKafkaConnectionString());
-				}
-			}
-		}
-		return Collections.unmodifiableMap(consumerConfiguration);
+		return getConfigurationWithBootstrapServer(consumerConfiguration, ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG);
 	}
 
 	/**
@@ -542,7 +546,7 @@ public class KafkaBinderConfigurationProperties {
 		Map<String, Object> producerConfiguration = new HashMap<>();
 		producerConfiguration.putAll(this.kafkaProperties.buildProducerProperties());
 		// Copy configured binder properties that apply to producers
-		for (Map.Entry<String, String> configurationEntry : configuration.entrySet()) {
+		for (Map.Entry<String, String> configurationEntry : this.configuration.entrySet()) {
 			if (ProducerConfig.configNames().contains(configurationEntry.getKey())) {
 				producerConfiguration.put(configurationEntry.getKey(), configurationEntry.getValue());
 			}
@@ -550,21 +554,25 @@ public class KafkaBinderConfigurationProperties {
 		producerConfiguration.putAll(this.producerProperties);
 		// Override Spring Boot bootstrap server setting if left to default with the value
 		// configured in the binder
-		if (ObjectUtils.isEmpty(producerConfiguration.get(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG))) {
-			producerConfiguration.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, getKafkaConnectionString());
+		return getConfigurationWithBootstrapServer(producerConfiguration, ProducerConfig.BOOTSTRAP_SERVERS_CONFIG);
+	}
+
+	private Map<String, Object> getConfigurationWithBootstrapServer(Map<String, Object> configuration, String bootstrapServersConfig) {
+		if (ObjectUtils.isEmpty(configuration.get(bootstrapServersConfig))) {
+			configuration.put(bootstrapServersConfig, getKafkaConnectionString());
 		}
 		else {
-			Object boostrapServersConfig = producerConfiguration.get(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG);
+			Object boostrapServersConfig = configuration.get(bootstrapServersConfig);
 			if (boostrapServersConfig instanceof List) {
 				@SuppressWarnings("unchecked")
-				List<String> bootStrapServers = (List<String>) producerConfiguration
-						.get(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG);
+				List<String> bootStrapServers = (List<String>) configuration
+						.get(bootstrapServersConfig);
 				if (bootStrapServers.size() == 1 && bootStrapServers.get(0).equals("localhost:9092")) {
-					producerConfiguration.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, getKafkaConnectionString());
+					configuration.put(bootstrapServersConfig, getKafkaConnectionString());
 				}
 			}
 		}
-		return Collections.unmodifiableMap(producerConfiguration);
+		return Collections.unmodifiableMap(configuration);
 	}
 
 	public JaasLoginModuleConfiguration getJaas() {
@@ -583,9 +591,12 @@ public class KafkaBinderConfigurationProperties {
 		this.headerMapperBeanName = headerMapperBeanName;
 	}
 
+	/**
+	 * Domain class that models transaction capabilities in Kafka.
+	 */
 	public static class Transaction {
 
-		private final KafkaProducerProperties producer = new KafkaProducerProperties();
+		private final CombinedProducerProperties producer = new CombinedProducerProperties();
 
 		private String transactionIdPrefix;
 
@@ -597,10 +608,175 @@ public class KafkaBinderConfigurationProperties {
 			this.transactionIdPrefix = transactionIdPrefix;
 		}
 
-		public KafkaProducerProperties getProducer() {
+		public CombinedProducerProperties getProducer() {
 			return this.producer;
 		}
 
 	}
 
+	/**
+	 * An combination of {@link ProducerProperties} and {@link KafkaProducerProperties}
+	 * so that common and kafka-specific properties can be set for the transactional
+	 * producer.
+	 * @since 2.1
+	 */
+	public static class CombinedProducerProperties {
+
+		private final ProducerProperties producerProperties = new ProducerProperties();
+
+		private final KafkaProducerProperties kafkaProducerProperties = new KafkaProducerProperties();
+
+		public Expression getPartitionKeyExpression() {
+			return this.producerProperties.getPartitionKeyExpression();
+		}
+
+		public void setPartitionKeyExpression(Expression partitionKeyExpression) {
+			this.producerProperties.setPartitionKeyExpression(partitionKeyExpression);
+		}
+
+		public boolean isPartitioned() {
+			return this.producerProperties.isPartitioned();
+		}
+
+		public Expression getPartitionSelectorExpression() {
+			return this.producerProperties.getPartitionSelectorExpression();
+		}
+
+		public void setPartitionSelectorExpression(Expression partitionSelectorExpression) {
+			this.producerProperties.setPartitionSelectorExpression(partitionSelectorExpression);
+		}
+
+		public @Min(value = 1, message = "Partition count should be greater than zero.") int getPartitionCount() {
+			return this.producerProperties.getPartitionCount();
+		}
+
+		public void setPartitionCount(int partitionCount) {
+			this.producerProperties.setPartitionCount(partitionCount);
+		}
+
+		public String[] getRequiredGroups() {
+			return this.producerProperties.getRequiredGroups();
+		}
+
+		public void setRequiredGroups(String... requiredGroups) {
+			this.producerProperties.setRequiredGroups(requiredGroups);
+		}
+
+		public @AssertTrue(message = "Partition key expression and partition key extractor class properties are mutually exclusive.") boolean isValidPartitionKeyProperty() {
+			return this.producerProperties.isValidPartitionKeyProperty();
+		}
+
+		public @AssertTrue(message = "Partition selector class and partition selector expression properties are mutually exclusive.") boolean isValidPartitionSelectorProperty() {
+			return this.producerProperties.isValidPartitionSelectorProperty();
+		}
+
+		public HeaderMode getHeaderMode() {
+			return this.producerProperties.getHeaderMode();
+		}
+
+		public void setHeaderMode(HeaderMode headerMode) {
+			this.producerProperties.setHeaderMode(headerMode);
+		}
+
+		public boolean isUseNativeEncoding() {
+			return this.producerProperties.isUseNativeEncoding();
+		}
+
+		public void setUseNativeEncoding(boolean useNativeEncoding) {
+			this.producerProperties.setUseNativeEncoding(useNativeEncoding);
+		}
+
+		public boolean isErrorChannelEnabled() {
+			return this.producerProperties.isErrorChannelEnabled();
+		}
+
+		public void setErrorChannelEnabled(boolean errorChannelEnabled) {
+			this.producerProperties.setErrorChannelEnabled(errorChannelEnabled);
+		}
+
+		public String getPartitionKeyExtractorName() {
+			return this.producerProperties.getPartitionKeyExtractorName();
+		}
+
+		public void setPartitionKeyExtractorName(String partitionKeyExtractorName) {
+			this.producerProperties.setPartitionKeyExtractorName(partitionKeyExtractorName);
+		}
+
+		public String getPartitionSelectorName() {
+			return this.producerProperties.getPartitionSelectorName();
+		}
+
+		public void setPartitionSelectorName(String partitionSelectorName) {
+			this.producerProperties.setPartitionSelectorName(partitionSelectorName);
+		}
+
+		public int getBufferSize() {
+			return this.kafkaProducerProperties.getBufferSize();
+		}
+
+		public void setBufferSize(int bufferSize) {
+			this.kafkaProducerProperties.setBufferSize(bufferSize);
+		}
+
+		public @NotNull CompressionType getCompressionType() {
+			return this.kafkaProducerProperties.getCompressionType();
+		}
+
+		public void setCompressionType(CompressionType compressionType) {
+			this.kafkaProducerProperties.setCompressionType(compressionType);
+		}
+
+		public boolean isSync() {
+			return this.kafkaProducerProperties.isSync();
+		}
+
+		public void setSync(boolean sync) {
+			this.kafkaProducerProperties.setSync(sync);
+		}
+
+		public int getBatchTimeout() {
+			return this.kafkaProducerProperties.getBatchTimeout();
+		}
+
+		public void setBatchTimeout(int batchTimeout) {
+			this.kafkaProducerProperties.setBatchTimeout(batchTimeout);
+		}
+
+		public Expression getMessageKeyExpression() {
+			return this.kafkaProducerProperties.getMessageKeyExpression();
+		}
+
+		public void setMessageKeyExpression(Expression messageKeyExpression) {
+			this.kafkaProducerProperties.setMessageKeyExpression(messageKeyExpression);
+		}
+
+		public String[] getHeaderPatterns() {
+			return this.kafkaProducerProperties.getHeaderPatterns();
+		}
+
+		public void setHeaderPatterns(String[] headerPatterns) {
+			this.kafkaProducerProperties.setHeaderPatterns(headerPatterns);
+		}
+
+		public Map<String, String> getConfiguration() {
+			return this.kafkaProducerProperties.getConfiguration();
+		}
+
+		public void setConfiguration(Map<String, String> configuration) {
+			this.kafkaProducerProperties.setConfiguration(configuration);
+		}
+
+		public KafkaAdminProperties getAdmin() {
+			return this.kafkaProducerProperties.getAdmin();
+		}
+
+		public void setAdmin(KafkaAdminProperties admin) {
+			this.kafkaProducerProperties.setAdmin(admin);
+		}
+
+		public KafkaProducerProperties getExtension() {
+			return this.kafkaProducerProperties;
+		}
+	}
+
 }

spring-cloud-stream-binder-kafka-core/src/main/java/org/springframework/cloud/stream/binder/kafka/properties/KafkaBindingProperties.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 the original author or authors.
+ * Copyright 2016-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,17 +16,22 @@
 
 package org.springframework.cloud.stream.binder.kafka.properties;
 
+import org.springframework.cloud.stream.binder.BinderSpecificPropertiesProvider;
+
 /**
+ * Container object for Kafka specific extended producer and consumer binding properties.
+ *
  * @author Marius Bogoevici
+ * @author Oleg Zhurakousky
  */
-public class KafkaBindingProperties {
+public class KafkaBindingProperties implements BinderSpecificPropertiesProvider {
 
 	private KafkaConsumerProperties consumer = new KafkaConsumerProperties();
 
 	private KafkaProducerProperties producer = new KafkaProducerProperties();
 
 	public KafkaConsumerProperties getConsumer() {
-		return consumer;
+		return this.consumer;
 	}
 
 	public void setConsumer(KafkaConsumerProperties consumer) {
@@ -34,7 +39,7 @@ public class KafkaBindingProperties {
 	}
 
 	public KafkaProducerProperties getProducer() {
-		return producer;
+		return this.producer;
 	}
 
 	public void setProducer(KafkaProducerProperties producer) {

spring-cloud-stream-binder-kafka-core/src/main/java/org/springframework/cloud/stream/binder/kafka/properties/KafkaConsumerProperties.java

@@ -19,7 +19,10 @@ package org.springframework.cloud.stream.binder.kafka.properties;
 import java.util.HashMap;
 import java.util.Map;
 
+
 /**
+ * Extended consumer properties for Kafka binder.
+ *
  * @author Marius Bogoevici
  * @author Ilayaperumal Gopinathan
  * @author Soby Chacko
@@ -31,8 +34,17 @@ import java.util.Map;
  */
 public class KafkaConsumerProperties {
 
+	/**
+	 * Enumeration for starting consumer offset.
+	 */
 	public enum StartOffset {
+		/**
+		 * Starting from earliest offset.
+		 */
 		earliest(-2L),
+		/**
+		 * Starting from latest offset.
+		 */
 		latest(-1L);
 
 		private final long referencePoint;
@@ -46,10 +58,25 @@ public class KafkaConsumerProperties {
 		}
 	}
 
+	/**
+	 * Standard headers for the message.
+	 */
 	public enum StandardHeaders {
+		/**
+		 * No headers.
+		 */
 		none,
+		/**
+		 * Message header representing ID.
+		 */
 		id,
+		/**
+		 * Message header representing timestamp.
+		 */
 		timestamp,
+		/**
+		 * Indicating both ID and timestamp headers.
+		 */
 		both
 	}
 
@@ -138,7 +165,7 @@ public class KafkaConsumerProperties {
 	/**
 	 * No longer used.
 	 * @return the interval.
-	 * @deprecated
+	 * @deprecated No longer used by the binder
 	 */
 	@Deprecated
 	public int getRecoveryInterval() {
@@ -148,7 +175,7 @@ public class KafkaConsumerProperties {
 	/**
 	 * No longer used.
 	 * @param recoveryInterval the interval.
-	 * @deprecated
+	 * @deprecated No longer needed by the binder
 	 */
 	@Deprecated
 	public void setRecoveryInterval(int recoveryInterval) {
@@ -172,7 +199,7 @@ public class KafkaConsumerProperties {
 	}
 
 	public String getDlqName() {
-		return dlqName;
+		return this.dlqName;
 	}
 
 	public void setDlqName(String dlqName) {
@@ -180,7 +207,7 @@ public class KafkaConsumerProperties {
 	}
 
 	public String[] getTrustedPackages() {
-		return trustedPackages;
+		return this.trustedPackages;
 	}
 
 	public void setTrustedPackages(String[] trustedPackages) {
@@ -188,7 +215,7 @@ public class KafkaConsumerProperties {
 	}
 
 	public KafkaProducerProperties getDlqProducerProperties() {
-		return dlqProducerProperties;
+		return this.dlqProducerProperties;
 	}
 
 	public void setDlqProducerProperties(KafkaProducerProperties dlqProducerProperties) {

spring-cloud-stream-binder-kafka-core/src/main/java/org/springframework/cloud/stream/binder/kafka/properties/KafkaExtendedBindingProperties.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 the original author or authors.
+ * Copyright 2016-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,70 +16,31 @@
 
 package org.springframework.cloud.stream.binder.kafka.properties;
 
-import java.util.HashMap;
-import java.util.Map;
-
 import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.cloud.stream.binder.ExtendedBindingProperties;
+import org.springframework.cloud.stream.binder.AbstractExtendedBindingProperties;
+import org.springframework.cloud.stream.binder.BinderSpecificPropertiesProvider;
 
 /**
+ * Kafka specific extended binding properties class that extends from {@link AbstractExtendedBindingProperties}.
+ *
  * @author Marius Bogoevici
  * @author Gary Russell
+ * @author Soby Chacko
+ * @author Oleg Zhurakousky
  */
 @ConfigurationProperties("spring.cloud.stream.kafka")
 public class KafkaExtendedBindingProperties
-		implements ExtendedBindingProperties<KafkaConsumerProperties, KafkaProducerProperties> {
+	extends AbstractExtendedBindingProperties<KafkaConsumerProperties, KafkaProducerProperties, KafkaBindingProperties> {
 
-	private Map<String, KafkaBindingProperties> bindings = new HashMap<>();
+	private static final String DEFAULTS_PREFIX = "spring.cloud.stream.kafka.default";
 
-	public Map<String, KafkaBindingProperties> getBindings() {
-		return this.bindings;
-	}
-
-	public void setBindings(Map<String, KafkaBindingProperties> bindings) {
-		this.bindings = bindings;
+	@Override
+	public String getDefaultsPrefix() {
+		return DEFAULTS_PREFIX;
 	}
 
 	@Override
-	public synchronized KafkaConsumerProperties getExtendedConsumerProperties(String channelName) {
-		if (bindings.containsKey(channelName)) {
-			if (bindings.get(channelName).getConsumer() != null) {
-				return bindings.get(channelName).getConsumer();
-			}
-			else {
-				KafkaConsumerProperties properties = new KafkaConsumerProperties();
-				this.bindings.get(channelName).setConsumer(properties);
-				return properties;
-			}
-		}
-		else {
-			KafkaConsumerProperties properties = new KafkaConsumerProperties();
-			KafkaBindingProperties rbp = new KafkaBindingProperties();
-			rbp.setConsumer(properties);
-			bindings.put(channelName, rbp);
-			return properties;
-		}
+	public Class<? extends BinderSpecificPropertiesProvider> getExtendedPropertiesEntryClass() {
+		return KafkaBindingProperties.class;
 	}
-
-	@Override
-	public synchronized KafkaProducerProperties getExtendedProducerProperties(String channelName) {
-		if (bindings.containsKey(channelName)) {
-			if (bindings.get(channelName).getProducer() != null) {
-				return bindings.get(channelName).getProducer();
-			}
-			else {
-				KafkaProducerProperties properties = new KafkaProducerProperties();
-				this.bindings.get(channelName).setProducer(properties);
-				return properties;
-			}
-		}
-		else {
-			KafkaProducerProperties properties = new KafkaProducerProperties();
-			KafkaBindingProperties rbp = new KafkaBindingProperties();
-			rbp.setProducer(properties);
-			bindings.put(channelName, rbp);
-			return properties;
-		}
-	}
-
 }

spring-cloud-stream-binder-kafka-core/src/main/java/org/springframework/cloud/stream/binder/kafka/properties/KafkaProducerProperties.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2017 the original author or authors.
+ * Copyright 2016-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,6 +24,8 @@ import javax.validation.constraints.NotNull;
 import org.springframework.expression.Expression;
 
 /**
+ * Extended producer properties for Kafka binder.
+ *
  * @author Marius Bogoevici
  * @author Henryk Konsek
  * @author Gary Russell
@@ -80,7 +82,7 @@ public class KafkaProducerProperties {
 	}
 
 	public Expression getMessageKeyExpression() {
-		return messageKeyExpression;
+		return this.messageKeyExpression;
 	}
 
 	public void setMessageKeyExpression(Expression messageKeyExpression) {
@@ -111,10 +113,21 @@ public class KafkaProducerProperties {
 		this.admin = admin;
 	}
 
-
+	/**
+	 * Enumeration for compression types.
+	 */
 	public enum CompressionType {
+		/**
+		 * No compression.
+		 */
 		none,
+		/**
+		 * gzip based compression.
+		 */
 		gzip,
+		/**
+		 * snappy based compression.
+		 */
 		snappy
 	}
 }

spring-cloud-stream-binder-kafka-core/src/main/java/org/springframework/cloud/stream/binder/kafka/provisioning/KafkaTopicProvisioner.java

@@ -39,6 +39,7 @@ import org.apache.kafka.clients.admin.NewTopic;
 import org.apache.kafka.clients.admin.TopicDescription;
 import org.apache.kafka.common.KafkaFuture;
 import org.apache.kafka.common.PartitionInfo;
+import org.apache.kafka.common.errors.TopicExistsException;
 
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
@@ -63,7 +64,7 @@ import org.springframework.util.ObjectUtils;
 import org.springframework.util.StringUtils;
 
 /**
- * Kafka implementation for {@link ProvisioningProvider}
+ * Kafka implementation for {@link ProvisioningProvider}.
  *
  * @author Soby Chacko
  * @author Gary Russell
@@ -91,10 +92,12 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 		Assert.isTrue(kafkaProperties != null, "KafkaProperties cannot be null");
 		this.adminClientProperties = kafkaProperties.buildAdminProperties();
 		this.configurationProperties = kafkaBinderConfigurationProperties;
-		normalalizeBootPropsWithBinder(adminClientProperties, kafkaProperties, kafkaBinderConfigurationProperties);
+		normalalizeBootPropsWithBinder(this.adminClientProperties, kafkaProperties, kafkaBinderConfigurationProperties);
 	}
 
 	/**
+	 * Mutator for metadata retry operations.
+	 *
 	 * @param metadataRetryOperations the retry configuration
 	 */
 	public void setMetadataRetryOperations(RetryOperations metadataRetryOperations) {
@@ -138,8 +141,8 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 				try {
 					topicDescriptions = all.get(this.operationTimeout, TimeUnit.SECONDS);
 				}
-				catch (Exception e) {
-					throw new ProvisioningException("Problems encountered with partitions finding", e);
+				catch (Exception ex) {
+					throw new ProvisioningException("Problems encountered with partitions finding", ex);
 				}
 				TopicDescription topicDescription = topicDescriptions.get(name);
 				partitions = topicDescription.partitions().size();
@@ -191,7 +194,7 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 				DescribeTopicsResult describeTopicsResult = adminClient.describeTopics(Collections.singletonList(name));
 				KafkaFuture<Map<String, TopicDescription>> all = describeTopicsResult.all();
 				try {
-					Map<String, TopicDescription> topicDescriptions = all.get(operationTimeout, TimeUnit.SECONDS);
+					Map<String, TopicDescription> topicDescriptions = all.get(this.operationTimeout, TimeUnit.SECONDS);
 					TopicDescription topicDescription = topicDescriptions.get(name);
 					int partitions = topicDescription.partitions().size();
 					consumerDestination = createDlqIfNeedBe(adminClient, name, group, properties, anonymous, partitions);
@@ -199,8 +202,8 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 						consumerDestination = new KafkaConsumerDestination(name, partitions);
 					}
 				}
-				catch (Exception e) {
-					throw new ProvisioningException("provisioning exception", e);
+				catch (Exception ex) {
+					throw new ProvisioningException("provisioning exception", ex);
 				}
 			}
 		}
@@ -240,7 +243,7 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 			if (adminConfigNames.contains(key)) {
 				Object replaced = adminProps.put(key, value);
 				if (replaced != null && this.logger.isDebugEnabled()) {
-					logger.debug("Overrode boot property: [" + key + "], from: [" + replaced + "] to: [" + value + "]");
+					this.logger.debug("Overrode boot property: [" + key + "], from: [" + replaced + "] to: [" + value + "]");
 				}
 			}
 		});
@@ -299,8 +302,12 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 	/**
 	 * Creates a Kafka topic if needed, or try to increase its partition count to the
 	 * desired number.
-	 * @param adminClient
-	 * @param adminProperties
+	 * @param adminClient kafka admin client
+	 * @param topicName topic name
+	 * @param partitionCount partition count
+	 * @param tolerateLowerPartitionsOnBroker whether lower partitions count on broker is tolerated ot not
+	 * @param adminProperties kafka admin properties
+	 * @throws Throwable from topic creation
 	 */
 	private void createTopicAndPartitions(AdminClient adminClient, final String topicName, final int partitionCount,
 			boolean tolerateLowerPartitionsOnBroker, KafkaAdminProperties adminProperties) throws Throwable {
@@ -308,7 +315,7 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 		ListTopicsResult listTopicsResult = adminClient.listTopics();
 		KafkaFuture<Set<String>> namesFutures = listTopicsResult.names();
 
-		Set<String> names = namesFutures.get(operationTimeout, TimeUnit.SECONDS);
+		Set<String> names = namesFutures.get(this.operationTimeout, TimeUnit.SECONDS);
 		if (names.contains(topicName)) {
 			// only consider minPartitionCount for resizing if autoAddPartitions is true
 			int effectivePartitionCount = this.configurationProperties.isAutoAddPartitions()
@@ -316,17 +323,17 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 					: partitionCount;
 			DescribeTopicsResult describeTopicsResult = adminClient.describeTopics(Collections.singletonList(topicName));
 			KafkaFuture<Map<String, TopicDescription>> topicDescriptionsFuture = describeTopicsResult.all();
-			Map<String, TopicDescription> topicDescriptions = topicDescriptionsFuture.get(operationTimeout, TimeUnit.SECONDS);
+			Map<String, TopicDescription> topicDescriptions = topicDescriptionsFuture.get(this.operationTimeout, TimeUnit.SECONDS);
 			TopicDescription topicDescription = topicDescriptions.get(topicName);
 			int partitionSize = topicDescription.partitions().size();
 			if (partitionSize < effectivePartitionCount) {
 				if (this.configurationProperties.isAutoAddPartitions()) {
 					CreatePartitionsResult partitions = adminClient.createPartitions(
 							Collections.singletonMap(topicName, NewPartitions.increaseTo(effectivePartitionCount)));
-					partitions.all().get(operationTimeout, TimeUnit.SECONDS);
+					partitions.all().get(this.operationTimeout, TimeUnit.SECONDS);
 				}
 				else if (tolerateLowerPartitionsOnBroker) {
-					logger.warn("The number of expected partitions was: " + partitionCount + ", but "
+					this.logger.warn("The number of expected partitions was: " + partitionCount + ", but "
 							+ partitionSize + (partitionSize > 1 ? " have " : " has ") + "been found instead."
 							+ "There will be " + (effectivePartitionCount - partitionSize) + " idle consumers");
 				}
@@ -342,7 +349,7 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 			// always consider minPartitionCount for topic creation
 			final int effectivePartitionCount = Math.max(this.configurationProperties.getMinPartitionCount(),
 					partitionCount);
-			this.metadataRetryOperations.execute(context -> {
+			this.metadataRetryOperations.execute((context) -> {
 
 				NewTopic newTopic;
 				Map<Integer, List<Integer>> replicasAssignments = adminProperties.getReplicasAssignments();
@@ -353,31 +360,30 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 					newTopic = new NewTopic(topicName, effectivePartitionCount,
 							adminProperties.getReplicationFactor() != null
 									? adminProperties.getReplicationFactor()
-									: configurationProperties.getReplicationFactor());
+									: this.configurationProperties.getReplicationFactor());
 				}
 				if (adminProperties.getConfiguration().size() > 0) {
 					newTopic.configs(adminProperties.getConfiguration());
 				}
 				CreateTopicsResult createTopicsResult = adminClient.createTopics(Collections.singletonList(newTopic));
 				try {
-					createTopicsResult.all().get(operationTimeout, TimeUnit.SECONDS);
+					createTopicsResult.all().get(this.operationTimeout, TimeUnit.SECONDS);
 				}
-				catch (Exception e) {
-					if (e instanceof ExecutionException) {
-						String exceptionMessage = e.getMessage();
-						if (exceptionMessage.contains("org.apache.kafka.common.errors.TopicExistsException")) {
-							if (logger.isWarnEnabled()) {
-								logger.warn("Attempt to create topic: " + topicName + ". Topic already exists.");
+				catch (Exception ex) {
+					if (ex instanceof ExecutionException) {
+						if (ex.getCause() instanceof TopicExistsException) {
+							if (this.logger.isWarnEnabled()) {
+								this.logger.warn("Attempt to create topic: " + topicName + ". Topic already exists.");
 							}
 						}
 						else {
-							logger.error("Failed to create topics", e.getCause());
-							throw e.getCause();
+							this.logger.error("Failed to create topics", ex.getCause());
+							throw ex.getCause();
 						}
 					}
 					else {
-						logger.error("Failed to create topics", e.getCause());
-						throw e.getCause();
+						this.logger.error("Failed to create topics", ex.getCause());
+						throw ex.getCause();
 					}
 				}
 				return null;
@@ -390,13 +396,13 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 														final Callable<Collection<PartitionInfo>> callable) {
 		try {
 			return this.metadataRetryOperations
-					.execute(context -> {
+					.execute((context) -> {
 						Collection<PartitionInfo> partitions = callable.call();
 						// do a sanity check on the partition set
 						int partitionSize = partitions.size();
 						if (partitionSize < partitionCount) {
 							if (tolerateLowerPartitionsOnBroker) {
-								logger.warn("The number of expected partitions was: " + partitionCount + ", but "
+								this.logger.warn("The number of expected partitions was: " + partitionCount + ", but "
 										+ partitionSize + (partitionSize > 1 ? " have " : " has ") + "been found instead."
 										+ "There will be " + (partitionCount - partitionSize) + " idle consumers");
 							}
@@ -409,9 +415,9 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 						return partitions;
 					});
 		}
-		catch (Exception e) {
-			this.logger.error("Cannot initialize Binder", e);
-			throw new BinderException("Cannot initialize binder:", e);
+		catch (Exception ex) {
+			this.logger.error("Cannot initialize Binder", ex);
+			throw new BinderException("Cannot initialize binder:", ex);
 		}
 	}
 
@@ -428,12 +434,12 @@ public class KafkaTopicProvisioner implements ProvisioningProvider<ExtendedConsu
 
 		@Override
 		public String getName() {
-			return producerDestinationName;
+			return this.producerDestinationName;
 		}
 
 		@Override
 		public String getNameForPartition(int partition) {
-			return producerDestinationName;
+			return this.producerDestinationName;
 		}
 
 		@Override

spring-cloud-stream-binder-kafka-core/src/main/java/org/springframework/cloud/stream/binder/kafka/utils/KafkaTopicUtils.java

@@ -19,6 +19,8 @@ package org.springframework.cloud.stream.binder.kafka.utils;
 import java.io.UnsupportedEncodingException;
 
 /**
+ * Utility methods releated to Kafka topics.
+ *
  * @author Soby Chacko
  */
 public final class KafkaTopicUtils {
@@ -28,7 +30,10 @@ public final class KafkaTopicUtils {
 	}
 
 	/**
+	 * Validate topic name.
 	 * Allowed chars are ASCII alphanumerics, '.', '_' and '-'.
+	 *
+	 * @param topicName name of the topic
 	 */
 	public static void validateTopicName(String topicName) {
 		try {
@@ -42,8 +47,8 @@ public final class KafkaTopicUtils {
 				}
 			}
 		}
-		catch (UnsupportedEncodingException e) {
-			throw new AssertionError(e); // Can't happen
+		catch (UnsupportedEncodingException ex) {
+			throw new AssertionError(ex); // Can't happen
 		}
 	}
 }

spring-cloud-stream-binder-kafka-docs/pom.xml

@@ -1,337 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-
-    <parent>
-        <groupId>org.springframework.cloud</groupId>
-        <artifactId>spring-cloud-stream-binder-kafka-parent</artifactId>
-        <version>2.1.0.M2</version>
-    </parent>
-
-    <artifactId>spring-cloud-stream-binder-kafka-docs</artifactId>
-    <name>spring-cloud-stream-binder-kafka-docs</name>
-    <description>Spring Cloud Stream Kafka Binder Docs</description>
-    <properties>
-        <main.basedir>${basedir}/..</main.basedir>
-    </properties>
-    <dependencies>
-        <dependency>
-            <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-stream-binder-kafka</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-    </dependencies>
-    <profiles>
-        <profile>
-            <id>full</id>
-            <build>
-                <plugins>
-                    <plugin>
-                        <groupId>org.codehaus.mojo</groupId>
-                        <artifactId>xml-maven-plugin</artifactId>
-                        <version>1.0</version>
-                        <executions>
-                            <execution>
-                                <goals>
-                                    <goal>transform</goal>
-                                </goals>
-                            </execution>
-                        </executions>
-                        <configuration>
-                            <transformationSets>
-                                <transformationSet>
-                                    <dir>${project.build.directory}/external-resources</dir>
-                                    <stylesheet>src/main/xslt/dependencyVersions.xsl</stylesheet>
-                                    <fileMappers>
-                                        <fileMapper implementation="org.codehaus.plexus.components.io.filemappers.FileExtensionMapper">
-                                            <targetExtension>.adoc</targetExtension>
-                                        </fileMapper>
-                                    </fileMappers>
-                                    <outputDir>${project.build.directory}/generated-resources</outputDir>
-                                </transformationSet>
-                            </transformationSets>
-                        </configuration>
-                    </plugin>
-                    <plugin>
-                        <groupId>org.apache.maven.plugins</groupId>
-                        <artifactId>maven-javadoc-plugin</artifactId>
-                        <executions>
-                            <execution>
-                                <id>attach-javadocs</id>
-                                <goals>
-                                    <goal>jar</goal>
-                                </goals>
-                                <phase>prepare-package</phase>
-                                <configuration>
-                                    <includeDependencySources>true</includeDependencySources>
-                                    <dependencySourceIncludes>
-                                        <dependencySourceInclude>${project.groupId}:*</dependencySourceInclude>
-                                    </dependencySourceIncludes>
-                                    <attach>false</attach>
-                                    <quiet>true</quiet>
-                                    <stylesheetfile>${basedir}/src/main/javadoc/spring-javadoc.css</stylesheetfile>
-                                    <links>
-                                        <link>http://docs.spring.io/spring-framework/docs/${spring.version}/javadoc-api/</link>
-                                        <link>http://docs.spring.io/spring-shell/docs/current/api/</link>
-                                    </links>
-                                </configuration>
-                            </execution>
-                        </executions>
-                    </plugin>
-                    <plugin>
-                        <groupId>org.asciidoctor</groupId>
-                        <artifactId>asciidoctor-maven-plugin</artifactId>
-                        <version>1.5.0</version>
-                        <executions>
-                            <execution>
-                                <id>generate-docbook</id>
-                                <phase>generate-resources</phase>
-                                <goals>
-                                    <goal>process-asciidoc</goal>
-                                </goals>
-                                <configuration>
-                                    <sourceDocumentName>index.adoc</sourceDocumentName>
-                                    <backend>docbook5</backend>
-                                    <doctype>book</doctype>
-                                    <attributes>
-                                        <docinfo>true</docinfo>
-                                        <spring-cloud-stream-binder-kafka-version>${project.version}</spring-cloud-stream-binder-kafka-version>
-                                        <spring-cloud-stream-binder-kafka-docs-version>${project.version}</spring-cloud-stream-binder-kafka-docs-version>
-                                        <github-tag>${github-tag}</github-tag>
-                                    </attributes>
-                                </configuration>
-                            </execution>
-                        </executions>
-                    </plugin>
-                    <plugin>
-                        <groupId>com.agilejava.docbkx</groupId>
-                        <artifactId>docbkx-maven-plugin</artifactId>
-                        <version>2.0.15</version>
-                        <configuration>
-                            <sourceDirectory>${basedir}/target/generated-docs</sourceDirectory>
-                            <includes>index.xml</includes>
-                            <xincludeSupported>true</xincludeSupported>
-                            <chunkedOutput>false</chunkedOutput>
-                            <foCustomization>${basedir}/src/main/docbook/xsl/pdf.xsl</foCustomization>
-                            <useExtensions>1</useExtensions>
-                            <highlightSource>1</highlightSource>
-                            <highlightXslthlConfig>${basedir}/src/main/docbook/xsl/xslthl-config.xml</highlightXslthlConfig>
-                        </configuration>
-                        <dependencies>
-                            <dependency>
-                                <groupId>net.sf.xslthl</groupId>
-                                <artifactId>xslthl</artifactId>
-                                <version>2.1.0</version>
-                            </dependency>
-                            <dependency>
-                                <groupId>net.sf.docbook</groupId>
-                                <artifactId>docbook-xml</artifactId>
-                                <version>5.0-all</version>
-                                <classifier>resources</classifier>
-                                <type>zip</type>
-                                <scope>runtime</scope>
-                            </dependency>
-                        </dependencies>
-                        <executions>
-                            <execution>
-                                <id>html-single</id>
-                                <goals>
-                                    <goal>generate-html</goal>
-                                </goals>
-                                <phase>generate-resources</phase>
-                                <configuration>
-                                    <htmlCustomization>${basedir}/src/main/docbook/xsl/html-singlepage.xsl</htmlCustomization>
-                                    <targetDirectory>${basedir}/target/docbook/htmlsingle</targetDirectory>
-                                    <postProcess>
-                                        <copy todir="${basedir}/target/contents/reference/htmlsingle">
-                                            <fileset dir="${basedir}/target/docbook/htmlsingle">
-                                                <include name="**/*.html" />
-                                            </fileset>
-                                        </copy>
-                                        <copy todir="${basedir}/target/contents/reference/htmlsingle">
-                                            <fileset dir="${basedir}/src/main/docbook">
-                                                <include name="**/*.css" />
-                                                <include name="**/*.png" />
-                                                <include name="**/*.gif" />
-                                                <include name="**/*.jpg" />
-                                            </fileset>
-                                        </copy>
-                                        <copy todir="${basedir}/target/contents/reference/htmlsingle">
-                                            <fileset dir="${basedir}/src/main/asciidoc">
-                                                <include name="images/*.css" />
-                                                <include name="images/*.png" />
-                                                <include name="images/*.gif" />
-                                                <include name="images/*.jpg" />
-                                            </fileset>
-                                        </copy>
-                                    </postProcess>
-                                </configuration>
-                            </execution>
-                            <execution>
-                                <id>html</id>
-                                <goals>
-                                    <goal>generate-html</goal>
-                                </goals>
-                                <phase>generate-resources</phase>
-                                <configuration>
-                                    <htmlCustomization>${basedir}/src/main/docbook/xsl/html-multipage.xsl</htmlCustomization>
-                                    <targetDirectory>${basedir}/target/docbook/html</targetDirectory>
-                                    <chunkedOutput>true</chunkedOutput>
-                                    <postProcess>
-                                        <copy todir="${basedir}/target/contents/reference/html">
-                                            <fileset dir="${basedir}/target/docbook/html">
-                                                <include name="**/*.html" />
-                                            </fileset>
-                                        </copy>
-                                        <copy todir="${basedir}/target/contents/reference/html">
-                                            <fileset dir="${basedir}/src/main/docbook">
-                                                <include name="**/*.css" />
-                                                <include name="**/*.png" />
-                                                <include name="**/*.gif" />
-                                                <include name="**/*.jpg" />
-                                            </fileset>
-                                        </copy>
-                                        <copy todir="${basedir}/target/contents/reference/html">
-                                            <fileset dir="${basedir}/src/main/asciidoc">
-                                                <include name="images/*.css" />
-                                                <include name="images/*.png" />
-                                                <include name="images/*.gif" />
-                                                <include name="images/*.jpg" />
-                                            </fileset>
-                                        </copy>
-                                    </postProcess>
-                                </configuration>
-                            </execution>
-                            <execution>
-                                <id>pdf</id>
-                                <goals>
-                                    <goal>generate-pdf</goal>
-                                </goals>
-                                <phase>generate-resources</phase>
-                                <configuration>
-                                    <foCustomization>${basedir}/src/main/docbook/xsl/pdf.xsl</foCustomization>
-                                    <targetDirectory>${basedir}/target/docbook/pdf</targetDirectory>
-                                    <postProcess>
-                                        <copy todir="${basedir}/target/contents/reference">
-                                            <fileset dir="${basedir}/target/docbook">
-                                                <include name="**/*.pdf" />
-                                            </fileset>
-                                        </copy>
-                                        <move file="${basedir}/target/contents/reference/pdf/index.pdf" tofile="${basedir}/target/contents/reference/pdf/spring-cloud-stream-reference.pdf" />
-                                    </postProcess>
-                                </configuration>
-                            </execution>
-                            <execution>
-                                <id>epub</id>
-                                <goals>
-                                    <goal>generate-epub3</goal>
-                                </goals>
-                                <phase>generate-resources</phase>
-                                <configuration>
-                                    <epubCustomization>${basedir}/src/main/docbook/xsl/epub.xsl</epubCustomization>
-                                    <targetDirectory>${basedir}/target/docbook/epub</targetDirectory>
-                                    <postProcess>
-                                        <copy todir="${basedir}/target/contents/reference/epub">
-                                            <fileset dir="${basedir}/target/docbook">
-                                                <include name="**/*.epub" />
-                                            </fileset>
-                                        </copy>
-                                        <move file="${basedir}/target/contents/reference/epub/index.epub" tofile="${basedir}/target/contents/reference/epub/spring-cloud-stream-reference.epub" />
-                                    </postProcess>
-                                </configuration>
-                            </execution>
-                        </executions>
-                    </plugin>
-                    <plugin>
-                        <groupId>org.apache.maven.plugins</groupId>
-                        <artifactId>maven-antrun-plugin</artifactId>
-                        <dependencies>
-                            <dependency>
-                                <groupId>ant-contrib</groupId>
-                                <artifactId>ant-contrib</artifactId>
-                                <version>1.0b3</version>
-                                <exclusions>
-                                    <exclusion>
-                                        <groupId>ant</groupId>
-                                        <artifactId>ant</artifactId>
-                                    </exclusion>
-                                </exclusions>
-                            </dependency>
-                            <dependency>
-                                <groupId>org.apache.ant</groupId>
-                                <artifactId>ant-nodeps</artifactId>
-                                <version>1.8.1</version>
-                            </dependency>
-                            <dependency>
-                                <groupId>org.tigris.antelope</groupId>
-                                <artifactId>antelopetasks</artifactId>
-                                <version>3.2.10</version>
-                            </dependency>
-                        </dependencies>
-                        <executions>
-                            <execution>
-                                <id>package-and-attach-docs-zip</id>
-                                <phase>package</phase>
-                                <goals>
-                                    <goal>run</goal>
-                                </goals>
-                                <configuration>
-                                    <target>
-                                        <zip destfile="${project.build.directory}/${project.artifactId}-${project.version}.zip">
-                                            <zipfileset src="${project.build.directory}/${project.artifactId}-${project.version}-javadoc.jar" prefix="api" />
-                                            <fileset dir="${project.build.directory}/contents" />
-                                        </zip>
-                                    </target>
-                                </configuration>
-                            </execution>
-                            <execution>
-                                <id>setup-maven-properties</id>
-                                <phase>validate</phase>
-                                <goals>
-                                    <goal>run</goal>
-                                </goals>
-                                <configuration>
-                                    <exportAntProperties>true</exportAntProperties>
-                                    <target>
-                                        <taskdef resource="net/sf/antcontrib/antcontrib.properties" />
-                                        <taskdef name="stringutil" classname="ise.antelope.tasks.StringUtilTask" />
-                                        <var name="version-type" value="${project.version}" />
-                                        <propertyregex property="version-type" override="true" input="${version-type}" regexp=".*\.(.*)" replace="\1" />
-                                        <propertyregex property="version-type" override="true" input="${version-type}" regexp="(M)\d+" replace="MILESTONE" />
-                                        <propertyregex property="version-type" override="true" input="${version-type}" regexp="(RC)\d+" replace="MILESTONE" />
-                                        <propertyregex property="version-type" override="true" input="${version-type}" regexp="BUILD-(.*)" replace="SNAPSHOT" />
-                                        <stringutil string="${version-type}" property="spring-boot-repo">
-                                            <lowercase />
-                                        </stringutil>
-                                        <var name="github-tag" value="v${project.version}" />
-                                        <propertyregex property="github-tag" override="true" input="${github-tag}" regexp=".*SNAPSHOT" replace="master" />
-                                    </target>
-                                </configuration>
-                            </execution>
-                        </executions>
-                    </plugin>
-                    <plugin>
-                        <groupId>org.codehaus.mojo</groupId>
-                        <artifactId>build-helper-maven-plugin</artifactId>
-                        <executions>
-                            <execution>
-                                <id>attach-zip</id>
-                                <goals>
-                                    <goal>attach-artifact</goal>
-                                </goals>
-                                <configuration>
-                                    <artifacts>
-                                        <artifact>
-                                            <file>${project.build.directory}/${project.artifactId}-${project.version}.zip</file>
-                                            <type>zip;zip.type=docs;zip.deployed=false</type>
-                                        </artifact>
-                                    </artifacts>
-                                </configuration>
-                            </execution>
-                        </executions>
-                    </plugin>
-                </plugins>
-            </build>
-        </profile>
-    </profiles>
-</project>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/css/highlight.css

@@ -1,35 +0,0 @@
-/* 
-   code highlight CSS resemblign the Eclipse IDE default color schema
-   @author Costin Leau
-*/
-
-.hl-keyword {
-  color: #7F0055;
-  font-weight: bold; 
-}
-
-.hl-comment {
-  color: #3F5F5F;
-  font-style: italic;
-}
-
-.hl-multiline-comment {
-  color: #3F5FBF;
-  font-style: italic;
-}
-
-.hl-tag {
-  color: #3F7F7F;
-}
-
-.hl-attribute {
-  color: #7F007F;
-}
-
-.hl-value {
-  color: #2A00FF;
-}
-
-.hl-string {
-  color: #2A00FF;
-}

spring-cloud-stream-binder-kafka-docs/src/main/docbook/css/manual-multipage.css

@@ -1,9 +0,0 @@
-@IMPORT url("manual.css");
-
-body.firstpage {
-	background: url("../images/background.png") no-repeat center top;
-}
-
-div.part h1 {
-    border-top: none;
-}

spring-cloud-stream-binder-kafka-docs/src/main/docbook/css/manual-singlepage.css

@@ -1,6 +0,0 @@
-@IMPORT url("manual.css");
-
-body {
-	background: url("../images/background.png") no-repeat center top;
-}
-

spring-cloud-stream-binder-kafka-docs/src/main/docbook/css/manual.css

@@ -1,344 +0,0 @@
-@IMPORT url("highlight.css");
-
-html {
-	padding: 0pt;
-	margin: 0pt;
-}
-
-body {
-	color: #333333;
-	margin: 15px 30px;
-	font-family: Helvetica, Arial, Freesans, Clean, Sans-serif;
-	line-height: 1.6;
-	-webkit-font-smoothing: antialiased;
-}
-
-code {
-	font-size: 16px;
-	font-family: Consolas, "Liberation Mono", Courier, monospace;
-}
-
-:not(a)>code {
-	color: #6D180B;
-}
-
-:not(pre)>code {
-	background-color: #F2F2F2;
-	border: 1px solid #CCCCCC;
-	border-radius: 4px;
-	padding: 1px 3px 0;
-	text-shadow: none;
-	white-space: nowrap;
-}
-
-body>*:first-child {
-	margin-top: 0 !important;
-}
-
-div {
-	margin: 0pt;
-}
-
-hr {
-	border: 1px solid #CCCCCC;
-	background: #CCCCCC;
-}
-
-h1,h2,h3,h4,h5,h6 {
-	color: #000000;
-	cursor: text;
-	font-weight: bold;
-	margin: 30px 0 10px;
-	padding: 0;
-}
-
-h1,h2,h3 {
-	margin: 40px 0 10px;
-}
-
-h1 {
-	margin: 70px 0 30px;
-	padding-top: 20px;
-}
-
-div.part h1 {
-	border-top: 1px dotted #CCCCCC;
-}
-
-h1,h1 code {
-	font-size: 32px;
-}
-
-h2,h2 code {
-	font-size: 24px;
-}
-
-h3,h3 code {
-	font-size: 20px;
-}
-
-h4,h1 code,h5,h5 code,h6,h6 code {
-	font-size: 18px;
-}
-
-div.book,div.chapter,div.appendix,div.part,div.preface {
-	min-width: 300px;
-	max-width: 1200px;
-	margin: 0 auto;
-}
-
-p.releaseinfo {
-	font-weight: bold;
-	margin-bottom: 40px;
-	margin-top: 40px;
-}
-
-div.authorgroup {
-	line-height: 1;
-}
-
-p.copyright {
-	line-height: 1;
-	margin-bottom: -5px;
-}
-
-.legalnotice p {
-	font-style: italic;
-	font-size: 14px;
-	line-height: 1;
-}
-
-div.titlepage+p,div.titlepage+p {
-	margin-top: 0;
-}
-
-pre {
-	line-height: 1.0;
-	color: black;
-}
-
-a {
-	color: #4183C4;
-	text-decoration: none;
-}
-
-p {
-	margin: 15px 0;
-	text-align: left;
-}
-
-ul,ol {
-	padding-left: 30px;
-}
-
-li p {
-	margin: 0;
-}
-
-div.table {
-	margin: 1em;
-	padding: 0.5em;
-	text-align: center;
-}
-
-div.table table,div.informaltable table {
-	display: table;
-	width: 100%;
-}
-
-div.table td {
-	padding-left: 7px;
-	padding-right: 7px;
-}
-
-.sidebar {
-	line-height: 1.4;
-	padding: 0 20px;
-	background-color: #F8F8F8;
-	border: 1px solid #CCCCCC;
-	border-radius: 3px 3px 3px 3px;
-}
-
-.sidebar p.title {
-	color: #6D180B;
-}
-
-pre.programlisting,pre.screen {
-	font-size: 15px;
-	padding: 6px 10px;
-	background-color: #F8F8F8;
-	border: 1px solid #CCCCCC;
-	border-radius: 3px 3px 3px 3px;
-	clear: both;
-	overflow: auto;
-	line-height: 1.4;
-	font-family: Consolas, "Liberation Mono", Courier, monospace;
-}
-
-table {
-	border-collapse: collapse;
-	border-spacing: 0;
-	border: 1px solid #DDDDDD !important;
-	border-radius: 4px !important;
-	border-collapse: separate !important;
-	line-height: 1.6;
-}
-
-table thead {
-	background: #F5F5F5;
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-table tr {
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-table th {
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-table th,table td {
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-table tr:nth-child(2n) {
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-td p {
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-div.table-contents td p {
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-div.important *,div.note *,div.tip *,div.warning *,div.navheader *,div.navfooter *,div.calloutlist *
-	{
-	border: none !important;
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-div.important p,div.note p,div.tip p,div.warning p {
-	color: #6F6F6F;
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-div.important code,div.note code,div.tip code,div.warning code {
-	background-color: #F2F2F2 !important;
-	border: 1px solid #CCCCCC !important;
-	border-radius: 4px !important;
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-	text-shadow: none !important;
-	white-space: nowrap !important;
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-.note th,.tip th,.warning th {
-	display: none;
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-.note tr:first-child td,.tip tr:first-child td,.warning tr:first-child td
-	{
-	border-right: 1px solid #CCCCCC !important;
-	padding-top: 10px;
-}
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-div.calloutlist p,div.calloutlist td {
-	padding: 0;
-	margin: 0;
-}
-
-div.calloutlist>table>tbody>tr>td:first-child {
-	padding-left: 10px;
-	width: 30px !important;
-}
-
-div.important,div.note,div.tip,div.warning {
-	margin-left: 0px !important;
-	margin-right: 20px !important;
-	margin-top: 20px;
-	margin-bottom: 20px;
-	padding-top: 10px;
-	padding-bottom: 10px;
-}
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-div.toc {
-	line-height: 1.2;
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-dl,dt {
-	margin-top: 1px;
-	margin-bottom: 0;
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-div.toc>dl>dt {
-	font-size: 32px;
-	font-weight: bold;
-	margin: 30px 0 10px 0;
-	display: block;
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-div.toc>dl>dd>dl>dt {
-	font-size: 24px;
-	font-weight: bold;
-	margin: 20px 0 10px 0;
-	display: block;
-}
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-div.toc>dl>dd>dl>dd>dl>dt {
-	font-weight: bold;
-	font-size: 20px;
-	margin: 10px 0 0 0;
-}
-
-tbody.footnotes * {
-	border: none !important;
-}
-
-div.footnote p {
-	margin: 0;
-	line-height: 1;
-}
-
-div.footnote p sup {
-	margin-right: 6px;
-	vertical-align: middle;
-}
-
-div.navheader {
-	border-bottom: 1px solid #CCCCCC;
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-
-div.navfooter {
-	border-top: 1px solid #CCCCCC;
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-
-.title {
-	margin-left: -1em;
-	padding-left: 1em;
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-.title>a {
-	position: absolute;
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-	font-size: 0.85em;
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-.title>a:before {
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-.title:hover>a,.title>a:hover,.title:hover>a:hover {
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-.title:focus>a,.title>a:focus,.title:focus>a:focus {
-	outline: 0;
-}

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/common.xsl

@@ -1,45 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!--
- Licensed to the Apache Software Foundation (ASF) under one
- or more contributor license agreements.  See the NOTICE file
- distributed with this work for additional information
- regarding copyright ownership.  The ASF licenses this file
- to you under the Apache License, Version 2.0 (the
- "License"); you may not use this file except in compliance
- with the License.  You may obtain a copy of the License at
-
-   http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing,
- software distributed under the License is distributed on an
- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- KIND, either express or implied.  See the License for the
- specific language governing permissions and limitations
- under the License.
--->
-
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-		xmlns:xslthl="http://xslthl.sf.net"
-		xmlns:d="http://docbook.org/ns/docbook"
-		exclude-result-prefixes="xslthl d"
-		version='1.0'>
-
-	<!-- Extensions -->
-	<xsl:param name="use.extensions">1</xsl:param>
-	<xsl:param name="tablecolumns.extension">0</xsl:param>
-	<xsl:param name="callout.extensions">1</xsl:param>
-
-	<!-- Graphics -->
-	<xsl:param name="admon.graphics" select="1"/>
-	<xsl:param name="admon.graphics.path">images/</xsl:param>
-	<xsl:param name="admon.graphics.extension">.png</xsl:param>
-
-	<!-- Table of Contents -->
-	<xsl:param name="generate.toc">book toc,title</xsl:param>
-	<xsl:param name="toc.section.depth">3</xsl:param>
-
-	<!-- Hide revhistory -->
-	<xsl:template match="d:revhistory" mode="titlepage.mode"/>
-
-</xsl:stylesheet>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/epub.xsl

@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!--
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements.  See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership.  The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License.  You may obtain a copy of the License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied.  See the License for the
-specific language governing permissions and limitations
-under the License.
--->
-
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-		xmlns:xslthl="http://xslthl.sf.net"
-		xmlns:d="http://docbook.org/ns/docbook"
-		exclude-result-prefixes="xslthl d"
-		version='1.0'>
-
-	<xsl:import href="urn:docbkx:stylesheet"/>
-	<xsl:import href="common.xsl"/>
-
-</xsl:stylesheet>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/html-multipage.xsl

@@ -1,73 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!--
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements.  See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership.  The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License.  You may obtain a copy of the License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied.  See the License for the
-specific language governing permissions and limitations
-under the License.
--->
-
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-				version='1.0'>
-
-	<xsl:import href="urn:docbkx:stylesheet"/>
-	<xsl:import href="html.xsl"/>
-
-	<xsl:param name="html.stylesheet">css/manual-multipage.css</xsl:param>
-
-	<xsl:param name="chunk.section.depth">'5'</xsl:param>
-	<xsl:param name="use.id.as.filename">'1'</xsl:param>
-
-	<!-- Replace chunk-element-content from chunk-common to add firstpage class to body -->
-	<xsl:template name="chunk-element-content">
-		<xsl:param name="prev"/>
-		<xsl:param name="next"/>
-		<xsl:param name="nav.context"/>
-		<xsl:param name="content">
-			<xsl:apply-imports/>
-		</xsl:param>
-
-  		<xsl:call-template name="user.preroot"/>
-
-		<html>
-			<xsl:call-template name="html.head">
-			<xsl:with-param name="prev" select="$prev"/>
-			<xsl:with-param name="next" select="$next"/>
-			</xsl:call-template>
-			<body>
-				<xsl:if test="count($prev) = 0">
-					<xsl:attribute name="class">firstpage</xsl:attribute>
-				</xsl:if>
-				<xsl:call-template name="body.attributes"/>
-				<xsl:call-template name="user.header.navigation"/>
-				<xsl:call-template name="header.navigation">
-					<xsl:with-param name="prev" select="$prev"/>
-					<xsl:with-param name="next" select="$next"/>
-					<xsl:with-param name="nav.context" select="$nav.context"/>
-				</xsl:call-template>
-				<xsl:call-template name="user.header.content"/>
-				<xsl:copy-of select="$content"/>
-				<xsl:call-template name="user.footer.content"/>
-				<xsl:call-template name="footer.navigation">
-					<xsl:with-param name="prev" select="$prev"/>
-					<xsl:with-param name="next" select="$next"/>
-					<xsl:with-param name="nav.context" select="$nav.context"/>
-				</xsl:call-template>
-				<xsl:call-template name="user.footer.navigation"/>
-			</body>
-		</html>
-		<xsl:value-of select="$chunk.append"/>
-	</xsl:template>
-</xsl:stylesheet>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/html-singlepage.xsl

@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!--
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements.  See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership.  The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License.  You may obtain a copy of the License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied.  See the License for the
-specific language governing permissions and limitations
-under the License.
--->
-
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-				version='1.0'>
-
-	<xsl:import href="urn:docbkx:stylesheet"/>
-	<xsl:import href="html.xsl"/>
-
-	<xsl:param name="html.stylesheet">css/manual-singlepage.css</xsl:param>
-
-</xsl:stylesheet>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/html.xsl

@@ -1,141 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!--
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements.  See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership.  The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License.  You may obtain a copy of the License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied.  See the License for the
-specific language governing permissions and limitations
-under the License.
--->
-
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-		xmlns:xslthl="http://xslthl.sf.net"
-		xmlns:d="http://docbook.org/ns/docbook"
-		exclude-result-prefixes="xslthl"
-		version='1.0'>
-
-	<xsl:import href="urn:docbkx:stylesheet/highlight.xsl"/>
-	<xsl:import href="common.xsl"/>
-
-	<!-- Only use scaling in FO -->
-	<xsl:param name="ignore.image.scaling">1</xsl:param>
-
-	<!-- Use code syntax highlighting -->
-	<xsl:param name="highlight.source">1</xsl:param>
-
-	<!-- Activate Graphics -->
-	<xsl:param name="callout.graphics" select="1" />
-	<xsl:param name="callout.defaultcolumn">120</xsl:param>
-	<xsl:param name="callout.graphics.path">images/callouts/</xsl:param>
-	<xsl:param name="callout.graphics.extension">.png</xsl:param>
-
-	<xsl:param name="table.borders.with.css" select="1"/>
-	<xsl:param name="html.stylesheet.type">text/css</xsl:param>
-
-	<xsl:param name="admonition.title.properties">text-align: left</xsl:param>
-
-	<!-- Leave image paths as relative when navigating XInclude -->
-	<xsl:param name="keep.relative.image.uris" select="1"/>
-
-	<!-- Label Chapters and Sections (numbering) -->
-	<xsl:param name="chapter.autolabel" select="1"/>
-	<xsl:param name="section.autolabel" select="1"/>
-	<xsl:param name="section.autolabel.max.depth" select="2"/>
-	<xsl:param name="section.label.includes.component.label" select="1"/>
-	<xsl:param name="table.footnote.number.format" select="'1'"/>
-
-	<!-- Remove "Chapter" from the Chapter titles... -->
-	<xsl:param name="local.l10n.xml" select="document('')"/>
-	<l:i18n xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0">
-		<l:l10n language="en">
-			<l:context name="title-numbered">
-				<l:template name="chapter" text="%n.&#160;%t"/>
-				<l:template name="section" text="%n&#160;%t"/>
-			</l:context>
-		</l:l10n>
-	</l:i18n>
-
-	<!-- Syntax Highlighting -->
-	<xsl:template match='xslthl:keyword' mode="xslthl">
-		<span class="hl-keyword"><xsl:apply-templates mode="xslthl"/></span>
-	</xsl:template>
-
-	<xsl:template match='xslthl:comment' mode="xslthl">
-		<span class="hl-comment"><xsl:apply-templates mode="xslthl"/></span>
-	</xsl:template>
-
-	<xsl:template match='xslthl:oneline-comment' mode="xslthl">
-		<span class="hl-comment"><xsl:apply-templates mode="xslthl"/></span>
-	</xsl:template>
-
-	<xsl:template match='xslthl:multiline-comment' mode="xslthl">
-		<span class="hl-multiline-comment"><xsl:apply-templates mode="xslthl"/></span>
-	</xsl:template>
-
-	<xsl:template match='xslthl:tag' mode="xslthl">
-		<span class="hl-tag"><xsl:apply-templates mode="xslthl"/></span>
-	</xsl:template>
-
-	<xsl:template match='xslthl:attribute' mode="xslthl">
-		<span class="hl-attribute"><xsl:apply-templates mode="xslthl"/></span>
-	</xsl:template>
-
-	<xsl:template match='xslthl:value' mode="xslthl">
-		<span class="hl-value"><xsl:apply-templates mode="xslthl"/></span>
-	</xsl:template>
-
-	<xsl:template match='xslthl:string' mode="xslthl">
-		<span class="hl-string"><xsl:apply-templates mode="xslthl"/></span>
-	</xsl:template>
-
-	<!-- Custom Title Page -->
-	<xsl:template match="d:author" mode="titlepage.mode">
-		<xsl:if test="name(preceding-sibling::*[1]) = 'author'">
-			<xsl:text>, </xsl:text>
-		</xsl:if>
-		<span class="{name(.)}">
-			<xsl:call-template name="person.name"/>
-			<xsl:apply-templates mode="titlepage.mode" select="./contrib"/>
-		</span>
-	</xsl:template>
-	<xsl:template match="d:authorgroup" mode="titlepage.mode">
-		<div class="{name(.)}">
-			<h2>Authors</h2>
-			<xsl:apply-templates mode="titlepage.mode"/>
-		</div>
-	</xsl:template>
-
-	<!-- Title Links -->
-	<xsl:template name="anchor">
-		<xsl:param name="node" select="."/>
-		<xsl:param name="conditional" select="1"/>
-		<xsl:variable name="id">
-			<xsl:call-template name="object.id">
-				<xsl:with-param name="object" select="$node"/>
-			</xsl:call-template>
-		</xsl:variable>
-		<xsl:if test="$conditional = 0 or $node/@id or $node/@xml:id">
-			<xsl:element name="a">
-				<xsl:attribute name="name">
-					<xsl:value-of select="$id"/>
-				</xsl:attribute>
-				<xsl:attribute name="href">
-					<xsl:text>#</xsl:text>
-					<xsl:value-of select="$id"/>
-				</xsl:attribute>
-			</xsl:element>
-		</xsl:if>
-	</xsl:template>
-
-</xsl:stylesheet>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/pdf.xsl

@@ -1,582 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!--
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements.  See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership.  The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License.  You may obtain a copy of the License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied.  See the License for the
-specific language governing permissions and limitations
-under the License.
--->
-
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-				xmlns:d="http://docbook.org/ns/docbook"
-				xmlns:fo="http://www.w3.org/1999/XSL/Format"
-				xmlns:xslthl="http://xslthl.sf.net"
-				xmlns:xlink='http://www.w3.org/1999/xlink'
-				xmlns:exsl="http://exslt.org/common"
-				exclude-result-prefixes="exsl xslthl d xlink"
-				version='1.0'>
-
-	<xsl:import href="urn:docbkx:stylesheet"/>
-	<xsl:import href="urn:docbkx:stylesheet/highlight.xsl"/>
-	<xsl:import href="common.xsl"/>
-
-	<!-- Extensions -->
-	<xsl:param name="fop1.extensions" select="1"/>
-
-	<xsl:param name="paper.type" select="'A4'"/>
-	<xsl:param name="page.margin.top" select="'1cm'"/>
-	<xsl:param name="region.before.extent" select="'1cm'"/>
-	<xsl:param name="body.margin.top" select="'1.5cm'"/>
-
-	<xsl:param name="body.margin.bottom" select="'1.5cm'"/>
-	<xsl:param name="region.after.extent" select="'1cm'"/>
-	<xsl:param name="page.margin.bottom" select="'1cm'"/>
-	<xsl:param name="title.margin.left" select="'0cm'"/>
-
-	<!-- allow break across pages -->
-	<xsl:attribute-set name="formal.object.properties">
-		<xsl:attribute name="keep-together.within-column">auto</xsl:attribute>
-	</xsl:attribute-set>
-
-	<!-- use color links and sensible rendering -->
-	<xsl:attribute-set name="xref.properties">
-		<xsl:attribute name="text-decoration">underline</xsl:attribute>
-		<xsl:attribute name="color">#204060</xsl:attribute>
-	</xsl:attribute-set>
-	<xsl:param name="ulink.show" select="0"></xsl:param>
-	<xsl:param name="ulink.footnotes" select="0"></xsl:param>
-
-	<!-- TITLE PAGE -->
-
-	<xsl:template name="book.titlepage.recto">
-		<fo:block>
-			<fo:table table-layout="fixed" width="175mm">
-				<fo:table-column column-width="175mm"/>
-				<fo:table-body>
-					<fo:table-row>
-						<fo:table-cell text-align="center">
-							<fo:block>
-								<fo:external-graphic src="images/logo.png" width="240px"
-									height="auto" content-width="scale-to-fit"
-									content-height="scale-to-fit"
-									content-type="content-type:image/png" text-align="center"
-								/>
-							</fo:block>
-							<fo:block font-family="Helvetica" font-size="20pt" font-weight="bold" padding="10mm">
-								<xsl:value-of select="d:info/d:title"/>
-							</fo:block>
-							<fo:block font-family="Helvetica" font-size="14pt" padding-before="2mm">
-								<xsl:value-of select="d:info/d:subtitle"/>
-							</fo:block>
-							<fo:block font-family="Helvetica" font-size="14pt" padding="2mm">
-								<xsl:value-of select="d:info/d:releaseinfo"/>
-							</fo:block>
-						</fo:table-cell>
-					</fo:table-row>
-					<fo:table-row>
-						<fo:table-cell text-align="center">
-							<fo:block font-family="Helvetica" font-size="14pt" padding="5mm">
-								<xsl:value-of select="d:info/d:pubdate"/>
-							</fo:block>
-						</fo:table-cell>
-					</fo:table-row>
-					<fo:table-row>
-						<fo:table-cell text-align="center">
-							<fo:block font-family="Helvetica" font-size="10pt" padding="10mm">
-								<xsl:for-each select="d:info/d:authorgroup/d:author">
-									<xsl:if test="position() > 1">
-										<xsl:text>, </xsl:text>
-									</xsl:if>
-									<xsl:value-of select="."/>
-								</xsl:for-each>
-							</fo:block>
-
-							<fo:block font-family="Helvetica" font-size="10pt" padding="5mm">
-								<xsl:value-of select="d:info/d:pubdate"/>
-							</fo:block>
-
-							<fo:block font-family="Helvetica" font-size="10pt" padding="5mm" padding-before="25em">
-								<xsl:text>Copyright &#xA9; </xsl:text><xsl:value-of select="d:info/d:copyright"/>
-							</fo:block>
-
-							<fo:block font-family="Helvetica" font-size="8pt" padding="1mm">
-								<xsl:value-of select="d:info/d:legalnotice"/>
-							</fo:block>
-						</fo:table-cell>
-					</fo:table-row>
-				</fo:table-body>
-			</fo:table>
-		</fo:block>
-	</xsl:template>
-
-	<!-- Prevent blank pages in output -->
-	<xsl:template name="book.titlepage.before.verso">
-	</xsl:template>
-	<xsl:template name="book.titlepage.verso">
-	</xsl:template>
-	<xsl:template name="book.titlepage.separator">
-	</xsl:template>
-
-	<!--  HEADER -->
-
-	<!-- More space in the center header for long text -->
-	<xsl:attribute-set name="header.content.properties">
-		<xsl:attribute name="font-family">
-			<xsl:value-of select="$body.font.family"/>
-		</xsl:attribute>
-		<xsl:attribute name="margin-left">-5em</xsl:attribute>
-		<xsl:attribute name="margin-right">-5em</xsl:attribute>
-		<xsl:attribute name="font-size">8pt</xsl:attribute>
-	</xsl:attribute-set>
-
-	<xsl:template name="header.content">
-		<xsl:param name="pageclass" select="''"/>
-		<xsl:param name="sequence" select="''"/>
-		<xsl:param name="position" select="''"/>
-		<xsl:param name="gentext-key" select="''"/>
-
-		<xsl:variable name="Version">
-			<xsl:choose>
-				<xsl:when test="//d:title">
-					<xsl:value-of select="//d:title"/><xsl:text> </xsl:text>
-				</xsl:when>
-				<xsl:otherwise>
-					<xsl:text>please define title in your docbook file!</xsl:text>
-				</xsl:otherwise>
-			</xsl:choose>
-		</xsl:variable>
-
-		<xsl:choose>
-			<xsl:when test="$sequence='blank'">
-				<xsl:choose>
-					<xsl:when test="$position='center'">
-						<xsl:value-of select="$Version"/>
-					</xsl:when>
-
-					<xsl:otherwise>
-					</xsl:otherwise>
-				</xsl:choose>
-			</xsl:when>
-
-			<xsl:when test="$pageclass='titlepage'">
-			</xsl:when>
-
-			<xsl:when test="$position='center'">
-				<xsl:value-of select="$Version"/>
-			</xsl:when>
-
-			<xsl:otherwise>
-			</xsl:otherwise>
-		</xsl:choose>
-	</xsl:template>
-
-	<!-- FOOTER-->
-	<xsl:attribute-set name="footer.content.properties">
-		<xsl:attribute name="font-family">
-			<xsl:value-of select="$body.font.family"/>
-		</xsl:attribute>
-		<xsl:attribute name="font-size">8pt</xsl:attribute>
-	</xsl:attribute-set>
-
-	<xsl:template name="footer.content">
-		<xsl:param name="pageclass" select="''"/>
-		<xsl:param name="sequence" select="''"/>
-		<xsl:param name="position" select="''"/>
-		<xsl:param name="gentext-key" select="''"/>
-
-		<xsl:variable name="Version">
-			<xsl:choose>
-				<xsl:when test="//d:releaseinfo">
-					<xsl:value-of select="//d:releaseinfo"/>
-				</xsl:when>
-				<xsl:otherwise>
-				</xsl:otherwise>
-			</xsl:choose>
-		</xsl:variable>
-
-		<xsl:variable name="Title">
-			<xsl:choose>
-				<xsl:when test="//d:productname">
-					<xsl:value-of select="//d:productname"/><xsl:text> </xsl:text>
-				</xsl:when>
-				<xsl:otherwise>
-					<xsl:text>please define title in your docbook file!</xsl:text>
-				</xsl:otherwise>
-			</xsl:choose>
-		</xsl:variable>
-
-		<xsl:choose>
-			<xsl:when test="$sequence='blank'">
-				<xsl:choose>
-					<xsl:when test="$double.sided != 0 and $position = 'left'">
-						<xsl:value-of select="$Version"/>
-					</xsl:when>
-
-					<xsl:when test="$double.sided = 0 and $position = 'center'">
-					</xsl:when>
-
-					<xsl:otherwise>
-						<fo:page-number/>
-					</xsl:otherwise>
-				</xsl:choose>
-			</xsl:when>
-
-			<xsl:when test="$pageclass='titlepage'">
-			</xsl:when>
-
-			<xsl:when test="$double.sided != 0 and $sequence = 'even' and $position='left'">
-				<fo:page-number/>
-			</xsl:when>
-
-			<xsl:when test="$double.sided != 0 and $sequence = 'odd' and $position='right'">
-				<fo:page-number/>
-			</xsl:when>
-
-			<xsl:when test="$double.sided = 0 and $position='right'">
-				<fo:page-number/>
-			</xsl:when>
-
-			<xsl:when test="$double.sided != 0 and $sequence = 'odd' and $position='left'">
-				<xsl:value-of select="$Version"/>
-			</xsl:when>
-
-			<xsl:when test="$double.sided != 0 and $sequence = 'even' and $position='right'">
-				<xsl:value-of select="$Version"/>
-			</xsl:when>
-
-			<xsl:when test="$double.sided = 0 and $position='left'">
-				<xsl:value-of select="$Version"/>
-			</xsl:when>
-
-			<xsl:when test="$position='center'">
-				<xsl:value-of select="$Title"/>
-			</xsl:when>
-
-			<xsl:otherwise>
-			</xsl:otherwise>
-		</xsl:choose>
-	</xsl:template>
-
-	<xsl:template match="processing-instruction('hard-pagebreak')">
-		<fo:block break-before='page'/>
-	</xsl:template>
-
-
-	<!-- PAPER & PAGE SIZE -->
-
-	<!-- Paper type, no headers on blank pages, no double sided printing -->
-	<xsl:param name="double.sided">0</xsl:param>
-	<xsl:param name="headers.on.blank.pages">0</xsl:param>
-	<xsl:param name="footers.on.blank.pages">0</xsl:param>
-
-	<!-- FONTS & STYLES -->
-
-	<xsl:param name="hyphenate">false</xsl:param>
-
-	<!-- Default Font size -->
-	<xsl:param name="body.font.family">Helvetica</xsl:param>
-	<xsl:param name="body.font.master">10</xsl:param>
-	<xsl:param name="body.font.small">8</xsl:param>
-	<xsl:param name="title.font.family">Helvetica</xsl:param>
-
-	<!-- Line height in body text -->
-	<xsl:param name="line-height">1.4</xsl:param>
-
-	<!-- Chapter title size -->
-	<xsl:attribute-set name="chapter.titlepage.recto.style">
-		<xsl:attribute name="text-align">left</xsl:attribute>
-		<xsl:attribute name="font-weight">bold</xsl:attribute>
-		<xsl:attribute name="font-size">
-			<xsl:value-of select="$body.font.master * 1.8"/>
-			<xsl:text>pt</xsl:text>
-		</xsl:attribute>
-	</xsl:attribute-set>
-
-	<!-- Why is the font-size for chapters hardcoded in the XSL FO templates?
-	Let's remove it, so this sucker can use our attribute-set only... -->
-	<xsl:template match="d:title" mode="chapter.titlepage.recto.auto.mode">
-		<fo:block xmlns:fo="http://www.w3.org/1999/XSL/Format"
-				xsl:use-attribute-sets="chapter.titlepage.recto.style">
-			<xsl:call-template name="component.title">
-			<xsl:with-param name="node" select="ancestor-or-self::d:chapter[1]"/>
-			</xsl:call-template>
-		</fo:block>
-	</xsl:template>
-
-	<!-- Sections 1, 2 and 3 titles have a small bump factor and padding -->
-	<xsl:attribute-set name="section.title.level1.properties">
-		<xsl:attribute name="space-before.optimum">0.6em</xsl:attribute>
-		<xsl:attribute name="space-before.minimum">0.6em</xsl:attribute>
-		<xsl:attribute name="space-before.maximum">0.6em</xsl:attribute>
-		<xsl:attribute name="font-size">
-			<xsl:value-of select="$body.font.master * 1.5"/>
-			<xsl:text>pt</xsl:text>
-		</xsl:attribute>
-		<xsl:attribute name="space-after.optimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.minimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.maximum">0.1em</xsl:attribute>
-	</xsl:attribute-set>
-
-	<xsl:attribute-set name="section.title.level2.properties">
-		<xsl:attribute name="space-before.optimum">0.4em</xsl:attribute>
-		<xsl:attribute name="space-before.minimum">0.4em</xsl:attribute>
-		<xsl:attribute name="space-before.maximum">0.4em</xsl:attribute>
-		<xsl:attribute name="font-size">
-			<xsl:value-of select="$body.font.master * 1.25"/>
-			<xsl:text>pt</xsl:text>
-		</xsl:attribute>
-		<xsl:attribute name="space-after.optimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.minimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.maximum">0.1em</xsl:attribute>
-	</xsl:attribute-set>
-
-	<xsl:attribute-set name="section.title.level3.properties">
-		<xsl:attribute name="space-before.optimum">0.4em</xsl:attribute>
-		<xsl:attribute name="space-before.minimum">0.4em</xsl:attribute>
-		<xsl:attribute name="space-before.maximum">0.4em</xsl:attribute>
-		<xsl:attribute name="font-size">
-			<xsl:value-of select="$body.font.master * 1.0"/>
-			<xsl:text>pt</xsl:text>
-		</xsl:attribute>
-		<xsl:attribute name="space-after.optimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.minimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.maximum">0.1em</xsl:attribute>
-	</xsl:attribute-set>
-
-	<xsl:attribute-set name="section.title.level4.properties">
-		<xsl:attribute name="space-before.optimum">0.3em</xsl:attribute>
-		<xsl:attribute name="space-before.minimum">0.3em</xsl:attribute>
-		<xsl:attribute name="space-before.maximum">0.3em</xsl:attribute>
-		<xsl:attribute name="font-size">
-			<xsl:value-of select="$body.font.master * 0.9"/>
-			<xsl:text>pt</xsl:text>
-		</xsl:attribute>
-		<xsl:attribute name="space-after.optimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.minimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.maximum">0.1em</xsl:attribute>
-	</xsl:attribute-set>
-
-
-	<!-- TABLES -->
-
-	<!-- Some padding inside tables -->
-	<xsl:attribute-set name="table.cell.padding">
-		<xsl:attribute name="padding-left">4pt</xsl:attribute>
-		<xsl:attribute name="padding-right">4pt</xsl:attribute>
-		<xsl:attribute name="padding-top">4pt</xsl:attribute>
-		<xsl:attribute name="padding-bottom">4pt</xsl:attribute>
-	</xsl:attribute-set>
-
-	<!-- Only hairlines as frame and cell borders in tables -->
-	<xsl:param name="table.frame.border.thickness">0.1pt</xsl:param>
-	<xsl:param name="table.cell.border.thickness">0.1pt</xsl:param>
-
-	<!-- LABELS -->
-
-	<!-- Label Chapters and Sections (numbering) -->
-	<xsl:param name="chapter.autolabel" select="1"/>
-	<xsl:param name="section.autolabel" select="1"/>
-	<xsl:param name="section.autolabel.max.depth" select="1"/>
-
-	<xsl:param name="section.label.includes.component.label" select="1"/>
-	<xsl:param name="table.footnote.number.format" select="'1'"/>
-
-	<!-- PROGRAMLISTINGS -->
-
-	<!-- Verbatim text formatting (programlistings) -->
-	<xsl:attribute-set name="monospace.verbatim.properties">
-		<xsl:attribute name="font-size">7pt</xsl:attribute>
-		<xsl:attribute name="wrap-option">wrap</xsl:attribute>
-		<xsl:attribute name="keep-together.within-column">1</xsl:attribute>
-	</xsl:attribute-set>
-
-	<xsl:attribute-set name="verbatim.properties">
-		<xsl:attribute name="space-before.minimum">1em</xsl:attribute>
-		<xsl:attribute name="space-before.optimum">1em</xsl:attribute>
-		<xsl:attribute name="space-before.maximum">1em</xsl:attribute>
-		<xsl:attribute name="space-after.minimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.optimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.maximum">0.1em</xsl:attribute>
-
-		<xsl:attribute name="border-color">#444444</xsl:attribute>
-		<xsl:attribute name="border-style">solid</xsl:attribute>
-		<xsl:attribute name="border-width">0.1pt</xsl:attribute>
-		<xsl:attribute name="padding-top">0.5em</xsl:attribute>
-		<xsl:attribute name="padding-left">0.5em</xsl:attribute>
-		<xsl:attribute name="padding-right">0.5em</xsl:attribute>
-		<xsl:attribute name="padding-bottom">0.5em</xsl:attribute>
-		<xsl:attribute name="margin-left">0.5em</xsl:attribute>
-		<xsl:attribute name="margin-right">0.5em</xsl:attribute>
-	</xsl:attribute-set>
-
-	<!-- Shade (background) programlistings -->
-	<xsl:param name="shade.verbatim">1</xsl:param>
-	<xsl:attribute-set name="shade.verbatim.style">
-		<xsl:attribute name="background-color">#F0F0F0</xsl:attribute>
-	</xsl:attribute-set>
-
-	<xsl:attribute-set name="list.block.spacing">
-		<xsl:attribute name="space-before.optimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-before.minimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-before.maximum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.optimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.minimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.maximum">0.1em</xsl:attribute>
-	</xsl:attribute-set>
-
-	<xsl:attribute-set name="example.properties">
-		<xsl:attribute name="space-before.minimum">0.5em</xsl:attribute>
-		<xsl:attribute name="space-before.optimum">0.5em</xsl:attribute>
-		<xsl:attribute name="space-before.maximum">0.5em</xsl:attribute>
-		<xsl:attribute name="space-after.minimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.optimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-after.maximum">0.1em</xsl:attribute>
-	</xsl:attribute-set>
-
-	<xsl:attribute-set name="sidebar.properties">
-		<xsl:attribute name="border-color">#444444</xsl:attribute>
-		<xsl:attribute name="border-style">solid</xsl:attribute>
-		<xsl:attribute name="border-width">0.1pt</xsl:attribute>
-		<xsl:attribute name="background-color">#F0F0F0</xsl:attribute>
-	</xsl:attribute-set>
-
-
-	<!-- TITLE INFORMATION FOR FIGURES, EXAMPLES ETC. -->
-
-	<xsl:attribute-set name="formal.title.properties" use-attribute-sets="normal.para.spacing">
-		<xsl:attribute name="font-weight">normal</xsl:attribute>
-		<xsl:attribute name="font-style">italic</xsl:attribute>
-		<xsl:attribute name="font-size">
-			<xsl:value-of select="$body.font.master"/>
-			<xsl:text>pt</xsl:text>
-		</xsl:attribute>
-		<xsl:attribute name="hyphenate">false</xsl:attribute>
-		<xsl:attribute name="space-before.minimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-before.optimum">0.1em</xsl:attribute>
-		<xsl:attribute name="space-before.maximum">0.1em</xsl:attribute>
-	</xsl:attribute-set>
-
-	<!-- CALLOUTS -->
-
-	<!-- don't use images for callouts -->
-	<xsl:param name="callout.graphics">0</xsl:param>
-	<xsl:param name="callout.unicode">1</xsl:param>
-
-	<!-- Place callout marks at this column in annotated areas -->
-	<xsl:param name="callout.defaultcolumn">90</xsl:param>
-
-	<!-- MISC -->
-
-	<!-- Placement of titles -->
-	<xsl:param name="formal.title.placement">
-		figure after
-		example after
-		equation before
-		table before
-		procedure before
-	</xsl:param>
-
-	<!-- Format Variable Lists as Blocks (prevents horizontal overflow) -->
-	<xsl:param name="variablelist.as.blocks">1</xsl:param>
-	<xsl:param name="body.start.indent">0pt</xsl:param>
-
-	<!-- Remove "Chapter" from the Chapter titles... -->
-	<xsl:param name="local.l10n.xml" select="document('')"/>
-	<l:i18n xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0">
-		<l:l10n language="en">
-			<l:context name="title-numbered">
-				<l:template name="chapter" text="%n.&#160;%t"/>
-				<l:template name="section" text="%n&#160;%t"/>
-			</l:context>
-			<l:context name="title">
-				<l:template name="example" text="Example&#160;%n&#160;%t"/>
-			</l:context>
-		</l:l10n>
-	</l:i18n>
-
-	<!-- admon -->
-	<xsl:param name="admon.graphics" select="0"/>
-
-	<xsl:attribute-set name="nongraphical.admonition.properties">
-		<xsl:attribute name="margin-left">0.1em</xsl:attribute>
-		<xsl:attribute name="margin-right">2em</xsl:attribute>
-		<xsl:attribute name="border-left-width">.75pt</xsl:attribute>
-		<xsl:attribute name="border-left-style">solid</xsl:attribute>
-		<xsl:attribute name="border-left-color">#5c5c4f</xsl:attribute>
-		<xsl:attribute name="padding-left">0.5em</xsl:attribute>
-		<xsl:attribute name="space-before.optimum">1.5em</xsl:attribute>
-		<xsl:attribute name="space-before.minimum">1.5em</xsl:attribute>
-		<xsl:attribute name="space-before.maximum">1.5em</xsl:attribute>
-		<xsl:attribute name="space-after.optimum">1.5em</xsl:attribute>
-		<xsl:attribute name="space-after.minimum">1.5em</xsl:attribute>
-		<xsl:attribute name="space-after.maximum">1.5em</xsl:attribute>
-	</xsl:attribute-set>
-
-    <xsl:attribute-set name="admonition.title.properties">
-		<xsl:attribute name="font-size">10pt</xsl:attribute>
-		<xsl:attribute name="font-weight">bold</xsl:attribute>
-		<xsl:attribute name="hyphenate">false</xsl:attribute>
-		<xsl:attribute name="keep-with-next.within-column">always</xsl:attribute>
-		<xsl:attribute name="margin-left">0</xsl:attribute>
-	</xsl:attribute-set>
-
-	<xsl:attribute-set name="admonition.properties">
-		<xsl:attribute name="space-before.optimum">0em</xsl:attribute>
-		<xsl:attribute name="space-before.minimum">0em</xsl:attribute>
-		<xsl:attribute name="space-before.maximum">0em</xsl:attribute>
-	</xsl:attribute-set>
-
-	<!-- Asciidoc -->
-	<xsl:template match="processing-instruction('asciidoc-br')">
-		<fo:block/>
-	</xsl:template>
-
-	<xsl:template match="processing-instruction('asciidoc-hr')">
-		<fo:block space-after="1em">
-			<fo:leader leader-pattern="rule" rule-thickness="0.5pt" rule-style="solid" leader-length.minimum="100%"/>
-		</fo:block>
-	</xsl:template>
-
-  <xsl:template match="processing-instruction('asciidoc-pagebreak')">
-    <fo:block break-after='page'/>
-  </xsl:template>
-
-	<!-- SYNTAX HIGHLIGHT -->
-
-	<xsl:template match='xslthl:keyword' mode="xslthl">
-	  <fo:inline font-weight="bold" color="#7F0055"><xsl:apply-templates mode="xslthl"/></fo:inline>
-	</xsl:template>
-
-	<xsl:template match='xslthl:string' mode="xslthl">
-	  <fo:inline font-weight="bold" font-style="italic" color="#2A00FF"><xsl:apply-templates mode="xslthl"/></fo:inline>
-	</xsl:template>
-
-	<xsl:template match='xslthl:comment' mode="xslthl">
-	  <fo:inline font-style="italic" color="#3F5FBF"><xsl:apply-templates mode="xslthl"/></fo:inline>
-	</xsl:template>
-
-	<xsl:template match='xslthl:tag' mode="xslthl">
-	  <fo:inline font-weight="bold" color="#3F7F7F"><xsl:apply-templates mode="xslthl"/></fo:inline>
-	</xsl:template>
-
-	<xsl:template match='xslthl:attribute' mode="xslthl">
-	  <fo:inline font-weight="bold" color="#7F007F"><xsl:apply-templates mode="xslthl"/></fo:inline>
-	</xsl:template>
-
-	<xsl:template match='xslthl:value' mode="xslthl">
-	  <fo:inline font-weight="bold" color="#2A00FF"><xsl:apply-templates mode="xslthl"/></fo:inline>
-	</xsl:template>
-
-</xsl:stylesheet>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl-config.xml

@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<xslthl-config>
-	<highlighter id="java" file="./xslthl/java-hl.xml" />
-	<highlighter id="groovy" file="./xslthl/java-hl.xml" />
-	<highlighter id="html" file="./xslthl/html-hl.xml" />
-	<highlighter id="ini" file="./xslthl/ini-hl.xml" />
-	<highlighter id="php" file="./xslthl/php-hl.xml" />
-	<highlighter id="c" file="./xslthl/c-hl.xml" />
-	<highlighter id="cpp" file="./xslthl/cpp-hl.xml" />
-	<highlighter id="csharp" file="./xslthl/csharp-hl.xml" />
-	<highlighter id="python" file="./xslthl/python-hl.xml" />
-	<highlighter id="ruby" file="./xslthl/ruby-hl.xml" />
-	<highlighter id="perl" file="./xslthl/perl-hl.xml" />
-	<highlighter id="javascript" file="./xslthl/javascript-hl.xml" />
-	<highlighter id="bash" file="./xslthl/bourne-hl.xml" />
-	<highlighter id="css" file="./xslthl/css-hl.xml" />
-	<highlighter id="sql" file="./xslthl/sql2003-hl.xml" />
-	<highlighter id="asciidoc" file="./xslthl/asciidoc-hl.xml" />
-	<highlighter id="properties" file="./xslthl/properties-hl.xml" />
-	<highlighter id="json" file="./xslthl/json-hl.xml" />
-	<highlighter id="yaml" file="./xslthl/yaml-hl.xml" />
-	<namespace prefix="xslthl" uri="http://xslthl.sf.net" />
-</xslthl-config>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/asciidoc-hl.xml

@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for AsciiDoc files
-
--->
-<highlighters>
-  <highlighter type="multiline-comment">
-    <start>////</start>
-    <end>////</end>
-  </highlighter>
-  <highlighter type="oneline-comment">
-    <start>//</start>
-    <solitary/>
-  </highlighter>
-  <highlighter type="regex">
-    <pattern>^(={1,6} .+)$</pattern>
-    <style>heading</style>
-    <flags>MULTILINE</flags>
-  </highlighter>
-  <highlighter type="regex">
-    <pattern>^(\.[^\.\s].+)$</pattern>
-    <style>title</style>
-    <flags>MULTILINE</flags>
-  </highlighter>
-  <highlighter type="regex">
-    <pattern>^(:!?\w.*?:)</pattern>
-    <style>attribute</style>
-    <flags>MULTILINE</flags>
-  </highlighter>
-  <highlighter type="regex">
-    <pattern>^(-|\*{1,5}|\d*\.{1,5})(?= .+$)</pattern>
-    <style>bullet</style>
-    <flags>MULTILINE</flags>
-  </highlighter>
-  <highlighter type="regex">
-    <pattern>^(\[.+\])$</pattern>
-    <style>attribute</style>
-    <flags>MULTILINE</flags>
-  </highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/bourne-hl.xml

@@ -1,95 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-
-Syntax highlighting definition for SH
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2010 Mathieu Malaterre
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
--->
-<highlighters>
-	<highlighter type="oneline-comment">#</highlighter>
-	<highlighter type="heredoc">
-		<start>&lt;&lt;</start>
-		<quote>'</quote>
-		<quote>"</quote>
-		<flag>-</flag>
-		<noWhiteSpace />
-		<looseTerminator />
-	</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-		<spanNewLines />
-	</highlighter>
-	<highlighter type="hexnumber">
-		<prefix>0x</prefix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="number">
-		<point>.</point>
-		<pointStarts />
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="keywords">
-		<!-- reserved words -->
-		<keyword>if</keyword>
-		<keyword>then</keyword>
-		<keyword>else</keyword>
-		<keyword>elif</keyword>
-		<keyword>fi</keyword>
-		<keyword>case</keyword>
-		<keyword>esac</keyword>
-		<keyword>for</keyword>
-		<keyword>while</keyword>
-		<keyword>until</keyword>
-		<keyword>do</keyword>
-		<keyword>done</keyword>
-		<!-- built-ins -->
-		<keyword>exec</keyword>
-		<keyword>shift</keyword>
-		<keyword>exit</keyword>
-		<keyword>times</keyword>
-		<keyword>break</keyword>
-		<keyword>export</keyword>
-		<keyword>trap</keyword>
-		<keyword>continue</keyword>
-		<keyword>readonly</keyword>
-		<keyword>wait</keyword>
-		<keyword>eval</keyword>
-		<keyword>return</keyword>
-		<!-- other commands -->
-		<keyword>cd</keyword>
-		<keyword>echo</keyword>
-		<keyword>hash</keyword>
-		<keyword>pwd</keyword>
-		<keyword>read</keyword>
-		<keyword>set</keyword>
-		<keyword>test</keyword>
-		<keyword>type</keyword>
-		<keyword>ulimit</keyword>
-		<keyword>umask</keyword>
-		<keyword>unset</keyword>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/c-hl.xml

@@ -1,117 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-Syntax highlighting definition for C
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
--->
-<highlighters>
-	<highlighter type="multiline-comment">
-		<start>/**</start>
-		<end>*/</end>
-		<style>doccomment</style>
-	</highlighter>
-	<highlighter type="oneline-comment">
-		<start><![CDATA[/// ]]></start>
-		<style>doccomment</style>
-	</highlighter>
-	<highlighter type="multiline-comment">
-		<start>/*</start>
-		<end>*/</end>
-	</highlighter>
-	<highlighter type="oneline-comment">//</highlighter>
-	<highlighter type="oneline-comment">
-		<!-- use the online-comment highlighter to detect directives -->
-		<start>#</start>
-		<lineBreakEscape>\</lineBreakEscape>
-		<style>directive</style>
-		<solitary />
-	</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="hexnumber">
-		<prefix>0x</prefix>
-		<suffix>ul</suffix>
-		<suffix>lu</suffix>
-		<suffix>u</suffix>
-		<suffix>l</suffix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="number">
-		<point>.</point>
-		<pointStarts />
-		<exponent>e</exponent>
-		<suffix>ul</suffix>
-		<suffix>lu</suffix>
-		<suffix>u</suffix>
-		<suffix>f</suffix>
-		<suffix>l</suffix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="keywords">
-		<keyword>auto</keyword>
-		<keyword>_Bool</keyword>
-		<keyword>break</keyword>
-		<keyword>case</keyword>
-		<keyword>char</keyword>
-		<keyword>_Complex</keyword>
-		<keyword>const</keyword>
-		<keyword>continue</keyword>
-		<keyword>default</keyword>
-		<keyword>do</keyword>
-		<keyword>double</keyword>
-		<keyword>else</keyword>
-		<keyword>enum</keyword>
-		<keyword>extern</keyword>
-		<keyword>float</keyword>
-		<keyword>for</keyword>
-		<keyword>goto</keyword>
-		<keyword>if</keyword>
-		<keyword>_Imaginary</keyword>
-		<keyword>inline</keyword>
-		<keyword>int</keyword>
-		<keyword>long</keyword>
-		<keyword>register</keyword>
-		<keyword>restrict</keyword>
-		<keyword>return</keyword>
-		<keyword>short</keyword>
-		<keyword>signed</keyword>
-		<keyword>sizeof</keyword>
-		<keyword>static</keyword>
-		<keyword>struct</keyword>
-		<keyword>switch</keyword>
-		<keyword>typedef</keyword>
-		<keyword>union</keyword>
-		<keyword>unsigned</keyword>
-		<keyword>void</keyword>
-		<keyword>volatile</keyword>
-		<keyword>while</keyword>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/cpp-hl.xml

@@ -1,151 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for C++
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
--->
-<highlighters>
-	<highlighter type="multiline-comment">
-		<start>/**</start>
-		<end>*/</end>
-		<style>doccomment</style>
-	</highlighter>
-	<highlighter type="oneline-comment">
-		<start><![CDATA[/// ]]></start>
-		<style>doccomment</style>
-	</highlighter>
-	<highlighter type="multiline-comment">
-		<start>/*</start>
-		<end>*/</end>
-	</highlighter>
-	<highlighter type="oneline-comment">//</highlighter>
-	<highlighter type="oneline-comment">
-		<!-- use the online-comment highlighter to detect directives -->
-		<start>#</start>
-		<lineBreakEscape>\</lineBreakEscape>
-		<style>directive</style>
-		<solitary/>
-	</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="hexnumber">
-		<prefix>0x</prefix>
-		<suffix>ul</suffix>
-		<suffix>lu</suffix>
-		<suffix>u</suffix>
-		<suffix>l</suffix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="number">
-		<point>.</point>
-		<pointStarts />
-		<exponent>e</exponent>
-		<suffix>ul</suffix>
-		<suffix>lu</suffix>
-		<suffix>u</suffix>
-		<suffix>f</suffix>
-		<suffix>l</suffix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="keywords">
-		<!-- C keywords -->
-		<keyword>auto</keyword>
-		<keyword>_Bool</keyword>
-		<keyword>break</keyword>
-		<keyword>case</keyword>
-		<keyword>char</keyword>
-		<keyword>_Complex</keyword>
-		<keyword>const</keyword>
-		<keyword>continue</keyword>
-		<keyword>default</keyword>
-		<keyword>do</keyword>
-		<keyword>double</keyword>
-		<keyword>else</keyword>
-		<keyword>enum</keyword>
-		<keyword>extern</keyword>
-		<keyword>float</keyword>
-		<keyword>for</keyword>
-		<keyword>goto</keyword>
-		<keyword>if</keyword>
-		<keyword>_Imaginary</keyword>
-		<keyword>inline</keyword>
-		<keyword>int</keyword>
-		<keyword>long</keyword>
-		<keyword>register</keyword>
-		<keyword>restrict</keyword>
-		<keyword>return</keyword>
-		<keyword>short</keyword>
-		<keyword>signed</keyword>
-		<keyword>sizeof</keyword>
-		<keyword>static</keyword>
-		<keyword>struct</keyword>
-		<keyword>switch</keyword>
-		<keyword>typedef</keyword>
-		<keyword>union</keyword>
-		<keyword>unsigned</keyword>
-		<keyword>void</keyword>
-		<keyword>volatile</keyword>
-		<keyword>while</keyword>
-		<!-- C++ keywords -->
-		<keyword>asm</keyword>
-		<keyword>dynamic_cast</keyword>
-		<keyword>namespace</keyword>
-		<keyword>reinterpret_cast</keyword>
-		<keyword>try</keyword>
-		<keyword>bool</keyword>
-		<keyword>explicit</keyword>
-		<keyword>new</keyword>
-		<keyword>static_cast</keyword>
-		<keyword>typeid</keyword>
-		<keyword>catch</keyword>
-		<keyword>false</keyword>
-		<keyword>operator</keyword>
-		<keyword>template</keyword>
-		<keyword>typename</keyword>
-		<keyword>class</keyword>
-		<keyword>friend</keyword>
-		<keyword>private</keyword>
-		<keyword>this</keyword>
-		<keyword>using</keyword>
-		<keyword>const_cast</keyword>
-		<keyword>inline</keyword>
-		<keyword>public</keyword>
-		<keyword>throw</keyword>
-		<keyword>virtual</keyword>
-		<keyword>delete</keyword>
-		<keyword>mutable</keyword>
-		<keyword>protected</keyword>
-		<keyword>true</keyword>
-		<keyword>wchar_t</keyword>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/csharp-hl.xml

@@ -1,194 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for C#
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
--->
-<highlighters>
-	<highlighter type="multiline-comment">
-		<start>/**</start>
-		<end>*/</end>
-		<style>doccomment</style>
-	</highlighter>
-	<highlighter type="oneline-comment">
-		<start>///</start>
-		<style>doccomment</style>
-	</highlighter>
-	<highlighter type="multiline-comment">
-		<start>/*</start>
-		<end>*/</end>
-	</highlighter>
-	<highlighter type="oneline-comment">//</highlighter>
-	<highlighter type="annotation">
-		<!-- annotations are called (custom) "attributes" in .NET -->
-		<start>[</start>
-		<end>]</end>
-		<valueStart>(</valueStart>
-		<valueEnd>)</valueEnd>
-	</highlighter>
-	<highlighter type="oneline-comment">
-		<!-- C# supports a couple of directives -->
-		<start>#</start>
-		<lineBreakEscape>\</lineBreakEscape>
-		<style>directive</style>
-		<solitary/>
-	</highlighter>
-	<highlighter type="string">
-		<!-- strings starting with an "@" can span multiple lines -->
-		<string>@"</string>
-		<endString>"</endString>
-		<escape>\</escape>
-		<spanNewLines />
-	</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="hexnumber">
-		<prefix>0x</prefix>
-		<suffix>ul</suffix>
-		<suffix>lu</suffix>
-		<suffix>u</suffix>
-		<suffix>l</suffix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="number">
-		<point>.</point>
-		<pointStarts />
-		<exponent>e</exponent>
-		<suffix>ul</suffix>
-		<suffix>lu</suffix>
-		<suffix>u</suffix>
-		<suffix>f</suffix>
-		<suffix>d</suffix>
-		<suffix>m</suffix>
-		<suffix>l</suffix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="keywords">
-		<keyword>abstract</keyword>
-		<keyword>as</keyword>
-		<keyword>base</keyword>
-		<keyword>bool</keyword>
-		<keyword>break</keyword>
-		<keyword>byte</keyword>
-		<keyword>case</keyword>
-		<keyword>catch</keyword>
-		<keyword>char</keyword>
-		<keyword>checked</keyword>
-		<keyword>class</keyword>
-		<keyword>const</keyword>
-		<keyword>continue</keyword>
-		<keyword>decimal</keyword>
-		<keyword>default</keyword>
-		<keyword>delegate</keyword>
-		<keyword>do</keyword>
-		<keyword>double</keyword>
-		<keyword>else</keyword>
-		<keyword>enum</keyword>
-		<keyword>event</keyword>
-		<keyword>explicit</keyword>
-		<keyword>extern</keyword>
-		<keyword>false</keyword>
-		<keyword>finally</keyword>
-		<keyword>fixed</keyword>
-		<keyword>float</keyword>
-		<keyword>for</keyword>
-		<keyword>foreach</keyword>
-		<keyword>goto</keyword>
-		<keyword>if</keyword>
-		<keyword>implicit</keyword>
-		<keyword>in</keyword>
-		<keyword>int</keyword>
-		<keyword>interface</keyword>
-		<keyword>internal</keyword>
-		<keyword>is</keyword>
-		<keyword>lock</keyword>
-		<keyword>long</keyword>
-		<keyword>namespace</keyword>
-		<keyword>new</keyword>
-		<keyword>null</keyword>
-		<keyword>object</keyword>
-		<keyword>operator</keyword>
-		<keyword>out</keyword>
-		<keyword>override</keyword>
-		<keyword>params</keyword>
-		<keyword>private</keyword>
-		<keyword>protected</keyword>
-		<keyword>public</keyword>
-		<keyword>readonly</keyword>
-		<keyword>ref</keyword>
-		<keyword>return</keyword>
-		<keyword>sbyte</keyword>
-		<keyword>sealed</keyword>
-		<keyword>short</keyword>
-		<keyword>sizeof</keyword>
-		<keyword>stackalloc</keyword>
-		<keyword>static</keyword>
-		<keyword>string</keyword>
-		<keyword>struct</keyword>
-		<keyword>switch</keyword>
-		<keyword>this</keyword>
-		<keyword>throw</keyword>
-		<keyword>true</keyword>
-		<keyword>try</keyword>
-		<keyword>typeof</keyword>
-		<keyword>uint</keyword>
-		<keyword>ulong</keyword>
-		<keyword>unchecked</keyword>
-		<keyword>unsafe</keyword>
-		<keyword>ushort</keyword>
-		<keyword>using</keyword>
-		<keyword>virtual</keyword>
-		<keyword>void</keyword>
-		<keyword>volatile</keyword>
-		<keyword>while</keyword>
-	</highlighter>
-	<highlighter type="keywords">
-		<!-- special words, not really keywords -->
-		<keyword>add</keyword>
-		<keyword>alias</keyword>
-		<keyword>from</keyword>
-		<keyword>get</keyword>
-		<keyword>global</keyword>
-		<keyword>group</keyword>
-		<keyword>into</keyword>
-		<keyword>join</keyword>
-		<keyword>orderby</keyword>
-		<keyword>partial</keyword>
-		<keyword>remove</keyword>
-		<keyword>select</keyword>
-		<keyword>set</keyword>
-		<keyword>value</keyword>
-		<keyword>where</keyword>
-		<keyword>yield</keyword>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/css-hl.xml

@@ -1,176 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for CSS files
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2011-2012 Martin Hujer, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Martin Hujer <mhujer at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
-Reference: http://www.w3.org/TR/CSS21/propidx.html
-
--->
-<highlighters>
-    <highlighter type="multiline-comment">
-        <start>/*</start>
-        <end>*/</end>
-    </highlighter>
-    <highlighter type="string">
-		<string>"</string>
-        <escape>\</escape>
-        <spanNewLines/>
-    </highlighter>
-    <highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-        <spanNewLines/>
-    </highlighter>
-    <highlighter type="number">
-        <point>.</point>
-        <pointStarts />
-    </highlighter>
-    <highlighter type="word">
-    	<word>@charset</word>
-    	<word>@import</word>
-    	<word>@media</word>
-    	<word>@page</word>
-    	<style>directive</style>
-    </highlighter>
-    <highlighter type="keywords">
-        <partChars>-</partChars>
-        <keyword>azimuth</keyword>
-        <keyword>background-attachment</keyword>
-        <keyword>background-color</keyword>
-        <keyword>background-image</keyword>
-        <keyword>background-position</keyword>
-        <keyword>background-repeat</keyword>
-        <keyword>background</keyword>
-        <keyword>border-collapse</keyword>
-        <keyword>border-color</keyword>
-        <keyword>border-spacing</keyword>
-        <keyword>border-style</keyword>
-        <keyword>border-top</keyword>
-        <keyword>border-right</keyword>
-        <keyword>border-bottom</keyword>
-        <keyword>border-left</keyword>
-        <keyword>border-top-color</keyword>
-        <keyword>border-right-color</keyword>
-        <keyword>border-bottom-color</keyword>
-        <keyword>border-left-color</keyword>
-        <keyword>border-top-style</keyword>
-        <keyword>border-right-style</keyword>
-        <keyword>border-bottom-style</keyword>
-        <keyword>border-left-style</keyword>
-        <keyword>border-top-width</keyword>
-        <keyword>border-right-width</keyword>
-        <keyword>border-bottom-width</keyword>
-        <keyword>border-left-width</keyword>
-        <keyword>border-width</keyword>
-        <keyword>border</keyword>
-        <keyword>bottom</keyword>
-        <keyword>caption-side</keyword>
-        <keyword>clear</keyword>
-        <keyword>clip</keyword>
-        <keyword>color</keyword>
-        <keyword>content</keyword>
-        <keyword>counter-increment</keyword>
-        <keyword>counter-reset</keyword>
-        <keyword>cue-after</keyword>
-        <keyword>cue-before</keyword>
-        <keyword>cue</keyword>
-        <keyword>cursor</keyword>
-        <keyword>direction</keyword>
-        <keyword>display</keyword>
-        <keyword>elevation</keyword>
-        <keyword>empty-cells</keyword>
-        <keyword>float</keyword>
-        <keyword>font-family</keyword>
-        <keyword>font-size</keyword>
-        <keyword>font-style</keyword>
-        <keyword>font-variant</keyword>
-        <keyword>font-weight</keyword>
-        <keyword>font</keyword>
-        <keyword>height</keyword>
-        <keyword>left</keyword>
-        <keyword>letter-spacing</keyword>
-        <keyword>line-height</keyword>
-        <keyword>list-style-image</keyword>
-        <keyword>list-style-position</keyword>
-        <keyword>list-style-type</keyword>
-        <keyword>list-style</keyword>
-        <keyword>margin-right</keyword>
-        <keyword>margin-left</keyword>
-        <keyword>margin-top</keyword>
-        <keyword>margin-bottom</keyword>
-        <keyword>margin</keyword>
-        <keyword>max-height</keyword>
-        <keyword>max-width</keyword>
-        <keyword>min-height</keyword>
-        <keyword>min-width</keyword>
-        <keyword>orphans</keyword>
-        <keyword>outline-color</keyword>
-        <keyword>outline-style</keyword>
-        <keyword>outline-width</keyword>
-        <keyword>outline</keyword>
-        <keyword>overflow</keyword>
-        <keyword>padding-top</keyword>
-        <keyword>padding-right</keyword>
-        <keyword>padding-bottom</keyword>
-        <keyword>padding-left</keyword>
-        <keyword>padding</keyword>
-        <keyword>page-break-after</keyword>
-        <keyword>page-break-before</keyword>
-        <keyword>page-break-inside</keyword>
-        <keyword>pause-after</keyword>
-        <keyword>pause-before</keyword>
-        <keyword>pause</keyword>
-        <keyword>pitch-range</keyword>
-        <keyword>pitch</keyword>
-        <keyword>play-during</keyword>
-        <keyword>position</keyword>
-        <keyword>quotes</keyword>
-        <keyword>richness</keyword>
-        <keyword>right</keyword>
-        <keyword>speak-header</keyword>
-        <keyword>speak-numeral</keyword>
-        <keyword>speak-punctuation</keyword>
-        <keyword>speak</keyword>
-        <keyword>speech-rate</keyword>
-        <keyword>stress</keyword>
-        <keyword>table-layout</keyword>
-        <keyword>text-align</keyword>
-        <keyword>text-decoration</keyword>
-        <keyword>text-indent</keyword>
-        <keyword>text-transform</keyword>
-        <keyword>top</keyword>
-        <keyword>unicode-bidi</keyword>
-        <keyword>vertical-align</keyword>
-        <keyword>visibility</keyword>
-        <keyword>voice-family</keyword>
-        <keyword>volume</keyword>
-        <keyword>white-space</keyword>
-        <keyword>widows</keyword>
-        <keyword>width</keyword>
-        <keyword>word-spacing</keyword>
-        <keyword>z-index</keyword>
-    </highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/html-hl.xml

@@ -1,122 +0,0 @@
-<?xml version='1.0'?>
-<!--
-
-  Bakalarska prace: Zvyraznovani syntaxe v XSLT
-  Michal Molhanec 2005
-
-  myxml-hl.xml - konfigurace zvyraznovace XML, ktera zvlast zvyrazni
-                 HTML elementy a XSL elementy
-
-  This file has been customized for the Asciidoctor project (http://asciidoctor.org).
--->
-<highlighters>
-  <highlighter type="xml">
-    <elementSet>
-      <style>htmltag</style>
-      <element>a</element>
-      <element>abbr</element>
-      <element>address</element>
-      <element>area</element>
-      <element>article</element>
-      <element>aside</element>
-      <element>audio</element>
-      <element>b</element>
-      <element>base</element>
-      <element>bdi</element>
-      <element>blockquote</element>
-      <element>body</element>
-      <element>br</element>
-      <element>button</element>
-      <element>caption</element>
-      <element>canvas</element>
-      <element>cite</element>
-      <element>code</element>
-      <element>command</element>
-      <element>col</element>
-      <element>colgroup</element>
-      <element>dd</element>
-      <element>del</element>
-      <element>dialog</element>
-      <element>div</element>
-      <element>dl</element>
-      <element>dt</element>
-      <element>em</element>
-      <element>embed</element>
-      <element>fieldset</element>
-      <element>figcaption</element>
-      <element>figure</element>
-      <element>font</element>
-      <element>form</element>
-      <element>footer</element>
-      <element>h1</element>
-      <element>h2</element>
-      <element>h3</element>
-      <element>h4</element>
-      <element>h5</element>
-      <element>h6</element>
-      <element>head</element>
-      <element>header</element>
-      <element>hr</element>
-      <element>html</element>
-      <element>i</element>
-      <element>iframe</element>
-      <element>img</element>
-      <element>input</element>
-      <element>ins</element>
-      <element>kbd</element>
-      <element>label</element>
-      <element>legend</element>
-      <element>li</element>
-      <element>link</element>
-      <element>map</element>
-      <element>mark</element>
-      <element>menu</element>
-      <element>menu</element>
-      <element>meta</element>
-      <element>nav</element>
-      <element>noscript</element>
-      <element>object</element>
-      <element>ol</element>
-      <element>optgroup</element>
-      <element>option</element>
-      <element>p</element>
-      <element>param</element>
-      <element>pre</element>
-      <element>q</element>
-      <element>samp</element>
-      <element>script</element>
-      <element>section</element>
-      <element>select</element>
-      <element>small</element>
-      <element>source</element>
-      <element>span</element>
-      <element>strong</element>
-      <element>style</element>
-      <element>sub</element>
-      <element>summary</element>
-      <element>sup</element>
-      <element>table</element>
-      <element>tbody</element>
-      <element>td</element>
-      <element>textarea</element>
-      <element>tfoot</element>
-      <element>th</element>
-      <element>thead</element>
-      <element>time</element>
-      <element>title</element>
-      <element>tr</element>
-      <element>track</element>
-      <element>u</element>
-      <element>ul</element>
-      <element>var</element>
-      <element>video</element>
-      <element>wbr</element>
-      <element>xmp</element>
-      <ignoreCase/>
-    </elementSet>
-    <elementPrefix>
-      <style>namespace</style>
-      <prefix>xsl:</prefix>
-    </elementPrefix>
-  </highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/ini-hl.xml

@@ -1,45 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for ini files
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
--->
-<highlighters>
-	<highlighter type="oneline-comment">;</highlighter>
-	<highlighter type="regex">
-		<!-- ini sections -->
-		<pattern>^(\[.+\]\s*)$</pattern>
-		<style>keyword</style>
-		<flags>MULTILINE</flags>
-	</highlighter>
-	<highlighter type="regex">
-		<!-- the keys in an ini section -->
-		<pattern>^(.+)(?==)</pattern>
-		<style>attribute</style>
-		<flags>MULTILINE</flags>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/java-hl.xml

@@ -1,117 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for Java
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
--->
-<highlighters>
-	<highlighter type="multiline-comment">
-		<start>/**</start>
-		<end>*/</end>
-		<style>doccomment</style>
-	</highlighter>
-	<highlighter type="multiline-comment">
-		<start>/*</start>
-		<end>*/</end>
-	</highlighter>
-	<highlighter type="oneline-comment">//</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="annotation">
-		<start>@</start>
-		<valueStart>(</valueStart>
-		<valueEnd>)</valueEnd>
-	</highlighter>
-	<highlighter type="hexnumber">
-		<prefix>0x</prefix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="number">
-		<point>.</point>
-		<exponent>e</exponent>
-		<suffix>f</suffix>
-		<suffix>d</suffix>
-		<suffix>l</suffix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="keywords">
-		<keyword>abstract</keyword>
-		<keyword>boolean</keyword>
-		<keyword>break</keyword>
-		<keyword>byte</keyword>
-		<keyword>case</keyword>
-		<keyword>catch</keyword>
-		<keyword>char</keyword>
-		<keyword>class</keyword>
-		<keyword>const</keyword>
-		<keyword>continue</keyword>
-		<keyword>default</keyword>
-		<keyword>do</keyword>
-		<keyword>double</keyword>
-		<keyword>else</keyword>
-		<keyword>extends</keyword>
-		<keyword>final</keyword>
-		<keyword>finally</keyword>
-		<keyword>float</keyword>
-		<keyword>for</keyword>
-		<keyword>goto</keyword>
-		<keyword>if</keyword>
-		<keyword>implements</keyword>
-		<keyword>import</keyword>
-		<keyword>instanceof</keyword>
-		<keyword>int</keyword>
-		<keyword>interface</keyword>
-		<keyword>long</keyword>
-		<keyword>native</keyword>
-		<keyword>new</keyword>
-		<keyword>package</keyword>
-		<keyword>private</keyword>
-		<keyword>protected</keyword>
-		<keyword>public</keyword>
-		<keyword>return</keyword>
-		<keyword>short</keyword>
-		<keyword>static</keyword>
-		<keyword>strictfp</keyword>
-		<keyword>super</keyword>
-		<keyword>switch</keyword>
-		<keyword>synchronized</keyword>
-		<keyword>this</keyword>
-		<keyword>throw</keyword>
-		<keyword>throws</keyword>
-		<keyword>transient</keyword>
-		<keyword>try</keyword>
-		<keyword>void</keyword>
-		<keyword>volatile</keyword>
-		<keyword>while</keyword>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/javascript-hl.xml

@@ -1,147 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for JavaScript
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
--->
-<highlighters>
-	<highlighter type="multiline-comment">
-		<start>/*</start>
-		<end>*/</end>
-	</highlighter>
-	<highlighter type="oneline-comment">//</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="hexnumber">
-		<prefix>0x</prefix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="number">
-		<point>.</point>
-		<exponent>e</exponent>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="keywords">
-		<keyword>break</keyword>
-		<keyword>case</keyword>
-		<keyword>catch</keyword>
-		<keyword>continue</keyword>
-		<keyword>default</keyword>
-		<keyword>delete</keyword>
-		<keyword>do</keyword>
-		<keyword>else</keyword>
-		<keyword>finally</keyword>
-		<keyword>for</keyword>
-		<keyword>function</keyword>
-		<keyword>if</keyword>
-		<keyword>in</keyword>
-		<keyword>instanceof</keyword>
-		<keyword>new</keyword>
-		<keyword>return</keyword>
-		<keyword>switch</keyword>
-		<keyword>this</keyword>
-		<keyword>throw</keyword>
-		<keyword>try</keyword>
-		<keyword>typeof</keyword>
-		<keyword>var</keyword>
-		<keyword>void</keyword>
-		<keyword>while</keyword>
-		<keyword>with</keyword>
-		<!-- future keywords -->
-		<keyword>abstract</keyword>
-		<keyword>boolean</keyword>
-		<keyword>byte</keyword>
-		<keyword>char</keyword>
-		<keyword>class</keyword>
-		<keyword>const</keyword>
-		<keyword>debugger</keyword>
-		<keyword>double</keyword>
-		<keyword>enum</keyword>
-		<keyword>export</keyword>
-		<keyword>extends</keyword>
-		<keyword>final</keyword>
-		<keyword>float</keyword>
-		<keyword>goto</keyword>
-		<keyword>implements</keyword>
-		<keyword>import</keyword>
-		<keyword>int</keyword>
-		<keyword>interface</keyword>
-		<keyword>long</keyword>
-		<keyword>native</keyword>
-		<keyword>package</keyword>
-		<keyword>private</keyword>
-		<keyword>protected</keyword>
-		<keyword>public</keyword>
-		<keyword>short</keyword>
-		<keyword>static</keyword>
-		<keyword>super</keyword>
-		<keyword>synchronized</keyword>
-		<keyword>throws</keyword>
-		<keyword>transient</keyword>
-		<keyword>volatile</keyword>
-	</highlighter>
-	<highlighter type="keywords">
-		<keyword>prototype</keyword>
-		<!-- Global Objects -->
-		<keyword>Array</keyword>
-		<keyword>Boolean</keyword>
-		<keyword>Date</keyword>
-		<keyword>Error</keyword>
-		<keyword>EvalError</keyword>
-		<keyword>Function</keyword>
-		<keyword>Math</keyword>
-		<keyword>Number</keyword>
-		<keyword>Object</keyword>
-		<keyword>RangeError</keyword>
-		<keyword>ReferenceError</keyword>
-		<keyword>RegExp</keyword>
-		<keyword>String</keyword>
-		<keyword>SyntaxError</keyword>
-		<keyword>TypeError</keyword>
-		<keyword>URIError</keyword>
-		<!-- Global functions -->
-		<keyword>decodeURI</keyword>
-		<keyword>decodeURIComponent</keyword>
-		<keyword>encodeURI</keyword>
-		<keyword>encodeURIComponent</keyword>
-		<keyword>eval</keyword>
-		<keyword>isFinite</keyword>
-		<keyword>isNaN</keyword>
-		<keyword>parseFloat</keyword>
-		<keyword>parseInt</keyword>
-		<!-- Global properties -->
-		<keyword>Infinity</keyword>
-		<keyword>NaN</keyword>
-		<keyword>undefined</keyword>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/json-hl.xml

@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<highlighters>
-	<highlighter type="oneline-comment">#</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="annotation">
-		<start>@</start>
-		<valueStart>(</valueStart>
-		<valueEnd>)</valueEnd>
-	</highlighter>
-	<highlighter type="number">
-		<point>.</point>
-		<exponent>e</exponent>
-		<suffix>f</suffix>
-		<suffix>d</suffix>
-		<suffix>l</suffix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="keywords">
-		<keyword>true</keyword>
-		<keyword>false</keyword>
-	</highlighter>
-	<highlighter type="word">
-		<word>{</word>
-		<word>}</word>
-		<word>,</word>
-		<word>[</word>
-		<word>]</word>
-		<style>keyword</style>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/perl-hl.xml

@@ -1,120 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for Perl
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
--->
-<highlighters>
-	<highlighter type="oneline-comment">#</highlighter>
-	<highlighter type="heredoc">
-		<start>&lt;&lt;</start>
-		<quote>'</quote>
-		<quote>"</quote>
-		<noWhiteSpace/>
-	</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-		<spanNewLines/>
-	</highlighter>
-	<highlighter type="hexnumber">
-		<prefix>0x</prefix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="number">
-		<point>.</point>
-		<pointStarts />
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="keywords">
-		<keyword>if</keyword>
-		<keyword>unless</keyword>
-		<keyword>while</keyword>
-		<keyword>until</keyword>
-		<keyword>foreach</keyword>
-		<keyword>else</keyword>
-		<keyword>elsif</keyword>
-		<keyword>for</keyword>
-		<keyword>when</keyword>
-		<keyword>default</keyword>
-		<keyword>given</keyword>
-		<!-- Keywords related to the control flow of your perl program  -->
-		<keyword>caller</keyword>
-		<keyword>continue</keyword>
-		<keyword>die</keyword>
-		<keyword>do</keyword>
-		<keyword>dump</keyword>
-		<keyword>eval</keyword>
-		<keyword>exit</keyword>
-		<keyword>goto</keyword>
-		<keyword>last</keyword>
-		<keyword>next</keyword>
-		<keyword>redo</keyword>
-		<keyword>return</keyword>
-		<keyword>sub</keyword>
-		<keyword>wantarray</keyword>
-		<!-- Keywords related to scoping  -->
-		<keyword>caller</keyword>
-		<keyword>import</keyword>
-		<keyword>local</keyword>
-		<keyword>my</keyword>
-		<keyword>package</keyword>
-		<keyword>use</keyword>
-		<!-- Keywords related to perl modules  -->
-		<keyword>do</keyword>
-		<keyword>import</keyword>
-		<keyword>no</keyword>
-		<keyword>package</keyword>
-		<keyword>require</keyword>
-		<keyword>use</keyword>
-		<!-- Keywords related to classes and object-orientedness  -->
-		<keyword>bless</keyword>
-		<keyword>dbmclose</keyword>
-		<keyword>dbmopen</keyword>
-		<keyword>package</keyword>
-		<keyword>ref</keyword>
-		<keyword>tie</keyword>
-		<keyword>tied</keyword>
-		<keyword>untie</keyword>
-		<keyword>use</keyword>
-		<!-- operators -->
-		<keyword>and</keyword>
-		<keyword>or</keyword>
-		<keyword>not</keyword>
-		<keyword>eq</keyword>
-		<keyword>ne</keyword>
-		<keyword>lt</keyword>
-		<keyword>gt</keyword>
-		<keyword>le</keyword>
-		<keyword>ge</keyword>
-		<keyword>cmp</keyword>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/php-hl.xml

@@ -1,154 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for PHP
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
--->
-<highlighters>
-	<highlighter type="multiline-comment">
-		<start>/**</start>
-		<end>*/</end>
-		<style>doccomment</style>
-	</highlighter>
-	<highlighter type="oneline-comment">
-		<start><![CDATA[/// ]]></start>
-		<style>doccomment</style>
-	</highlighter>
-	<highlighter type="multiline-comment">
-		<start>/*</start>
-		<end>*/</end>
-	</highlighter>
-	<highlighter type="oneline-comment">//</highlighter>
-	<highlighter type="oneline-comment">#</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-		<spanNewLines />
-	</highlighter>
-	<highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-		<spanNewLines />
-	</highlighter>
-	<highlighter type="heredoc">
-		<start>&lt;&lt;&lt;</start>
-	</highlighter>
-	<highlighter type="hexnumber">
-		<prefix>0x</prefix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="number">
-		<point>.</point>
-		<exponent>e</exponent>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="keywords">
-		<keyword>and</keyword>
-		<keyword>or</keyword>
-		<keyword>xor</keyword>
-		<keyword>__FILE__</keyword>
-		<keyword>exception</keyword>
-		<keyword>__LINE__</keyword>
-		<keyword>array</keyword>
-		<keyword>as</keyword>
-		<keyword>break</keyword>
-		<keyword>case</keyword>
-		<keyword>class</keyword>
-		<keyword>const</keyword>
-		<keyword>continue</keyword>
-		<keyword>declare</keyword>
-		<keyword>default</keyword>
-		<keyword>die</keyword>
-		<keyword>do</keyword>
-		<keyword>echo</keyword>
-		<keyword>else</keyword>
-		<keyword>elseif</keyword>
-		<keyword>empty</keyword>
-		<keyword>enddeclare</keyword>
-		<keyword>endfor</keyword>
-		<keyword>endforeach</keyword>
-		<keyword>endif</keyword>
-		<keyword>endswitch</keyword>
-		<keyword>endwhile</keyword>
-		<keyword>eval</keyword>
-		<keyword>exit</keyword>
-		<keyword>extends</keyword>
-		<keyword>for</keyword>
-		<keyword>foreach</keyword>
-		<keyword>function</keyword>
-		<keyword>global</keyword>
-		<keyword>if</keyword>
-		<keyword>include</keyword>
-		<keyword>include_once</keyword>
-		<keyword>isset</keyword>
-		<keyword>list</keyword>
-		<keyword>new</keyword>
-		<keyword>print</keyword>
-		<keyword>require</keyword>
-		<keyword>require_once</keyword>
-		<keyword>return</keyword>
-		<keyword>static</keyword>
-		<keyword>switch</keyword>
-		<keyword>unset</keyword>
-		<keyword>use</keyword>
-		<keyword>var</keyword>
-		<keyword>while</keyword>
-		<keyword>__FUNCTION__</keyword>
-		<keyword>__CLASS__</keyword>
-		<keyword>__METHOD__</keyword>
-		<keyword>final</keyword>
-		<keyword>php_user_filter</keyword>
-		<keyword>interface</keyword>
-		<keyword>implements</keyword>
-		<keyword>extends</keyword>
-		<keyword>public</keyword>
-		<keyword>private</keyword>
-		<keyword>protected</keyword>
-		<keyword>abstract</keyword>
-		<keyword>clone</keyword>
-		<keyword>try</keyword>
-		<keyword>catch</keyword>
-		<keyword>throw</keyword>
-		<keyword>cfunction</keyword>
-		<keyword>old_function</keyword>
-		<keyword>true</keyword>
-		<keyword>false</keyword>
-		<!-- PHP 5.3 -->
-		<keyword>namespace</keyword>
-		<keyword>__NAMESPACE__</keyword>
-		<keyword>goto</keyword>
-		<keyword>__DIR__</keyword>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="word">
-		<!-- highlight the php open and close tags as directives -->
-		<word>?&gt;</word>
-		<word>&lt;?php</word>
-		<word>&lt;?=</word>
-		<style>directive</style>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/properties-hl.xml

@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for Java
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
--->
-<highlighters>
-	<highlighter type="oneline-comment">#</highlighter>
-	<highlighter type="regex">
-		<pattern>^(.+?)(?==|:)</pattern>
-		<style>attribute</style>
-		<flags>MULTILINE</flags>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/python-hl.xml

@@ -1,100 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for Python
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
--->
-<highlighters>
-	<highlighter type="annotation">
-		<!-- these are actually called decorators -->
-		<start>@</start>
-		<valueStart>(</valueStart>
-		<valueEnd>)</valueEnd>
-	</highlighter>
-	<highlighter type="oneline-comment">#</highlighter>
-	<highlighter type="string">
-		<string>"""</string>
-		<spanNewLines />
-	</highlighter>
-	<highlighter type="string">
-		<string>'''</string>
-		<spanNewLines />
-	</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>'</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="hexnumber">
-		<prefix>0x</prefix>
-		<suffix>l</suffix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="number">
-		<point>.</point>
-		<pointStarts />
-		<exponent>e</exponent>
-		<suffix>l</suffix>
-		<ignoreCase />
-	</highlighter>
-	<highlighter type="keywords">
-		<keyword>and</keyword>
-		<keyword>del</keyword>
-		<keyword>from</keyword>
-		<keyword>not</keyword>
-		<keyword>while</keyword>
-		<keyword>as</keyword>
-		<keyword>elif</keyword>
-		<keyword>global</keyword>
-		<keyword>or</keyword>
-		<keyword>with</keyword>
-		<keyword>assert</keyword>
-		<keyword>else</keyword>
-		<keyword>if</keyword>
-		<keyword>pass</keyword>
-		<keyword>yield</keyword>
-		<keyword>break</keyword>
-		<keyword>except</keyword>
-		<keyword>import</keyword>
-		<keyword>print</keyword>
-		<keyword>class</keyword>
-		<keyword>exec</keyword>
-		<keyword>in</keyword>
-		<keyword>raise</keyword>
-		<keyword>continue</keyword>
-		<keyword>finally</keyword>
-		<keyword>is</keyword>
-		<keyword>return</keyword>
-		<keyword>def</keyword>
-		<keyword>for</keyword>
-		<keyword>lambda</keyword>
-		<keyword>try</keyword>
-	</highlighter>
-</highlighters>

spring-cloud-stream-binder-kafka-docs/src/main/docbook/xsl/xslthl/ruby-hl.xml

@@ -1,109 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-Syntax highlighting definition for Ruby
-
-xslthl - XSLT Syntax Highlighting
-http://sourceforge.net/projects/xslthl/
-Copyright (C) 2005-2008 Michal Molhanec, Jirka Kosek, Michiel Hendriks
-
-This software is provided 'as-is', without any express or implied
-warranty.  In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-
-Michal Molhanec <mol1111 at users.sourceforge.net>
-Jirka Kosek <kosek at users.sourceforge.net>
-Michiel Hendriks <elmuerte at users.sourceforge.net>
-
--->
-<highlighters>
-	<highlighter type="oneline-comment">#</highlighter>
-	<highlighter type="heredoc">
-		<start>&lt;&lt;</start>
-		<noWhiteSpace/>
-	</highlighter>
-	<highlighter type="string">
-		<string>"</string>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>%Q{</string>
-		<endString>}</endString>
-		<escape>\</escape>
-	</highlighter>
-	<highlighter type="string">
-		<string>%/</string>
-		<endString>/</endString>
-		<escape>\</escape>
-	</highlighter>
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spring-cloud-stream-binder-kafka-docs/src/main/xslt/dependencyVersions.xsl

@@ -1,28 +0,0 @@
-<?xml version="1.0"?>
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-				xmlns:mvn="http://maven.apache.org/POM/4.0.0"
-				version="1.0">
-
-	<xsl:output method="text" encoding="UTF-8" indent="no"/>
-
-	<xsl:template match="/">
-		<xsl:text>|===&#xa;</xsl:text>
-		<xsl:text>| Group ID | Artifact ID | Version&#xa;</xsl:text>
-		<xsl:for-each select="//mvn:dependency">
-			<xsl:sort select="mvn:groupId"/>
-			<xsl:sort select="mvn:artifactId"/>
-			<xsl:text>&#xa;</xsl:text>
-			<xsl:text>| `</xsl:text>
-			<xsl:copy-of select="mvn:groupId"/>
-			<xsl:text>`&#xa;</xsl:text>
-			<xsl:text>| `</xsl:text>
-			<xsl:copy-of select="mvn:artifactId"/>
-			<xsl:text>`&#xa;</xsl:text>
-			<xsl:text>| </xsl:text>
-			<xsl:copy-of select="mvn:version"/>
-			<xsl:text>&#xa;</xsl:text>
-		</xsl:for-each>
-		<xsl:text>|===</xsl:text>
-	</xsl:template>
-
-</xsl:stylesheet>

spring-cloud-stream-binder-kafka-streams/pom.xml

@@ -10,9 +10,13 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-stream-binder-kafka-parent</artifactId>
-		<version>2.1.0.M2</version>
+		<version>2.1.0.RC2</version>
 	</parent>
 
+	<properties>
+		<avro.version>1.8.2</avro.version>
+	</properties>
+
 	<dependencies>
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
@@ -76,5 +80,40 @@
 			<classifier>test</classifier>
 			<scope>test</scope>
 		</dependency>
+		<!-- Following dependencies are only provided for testing and won't be packaged with the binder apps-->
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-stream-schema</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.avro</groupId>
+			<artifactId>avro</artifactId>
+			<version>${avro.version}</version>
+			<scope>provided</scope>
+		</dependency>
 	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.avro</groupId>
+				<artifactId>avro-maven-plugin</artifactId>
+				<version>${avro.version}</version>
+				<executions>
+					<execution>
+						<phase>generate-test-sources</phase>
+						<goals>
+							<goal>schema</goal>
+						</goals>
+						<configuration>
+							<outputDirectory>${project.basedir}/target/generated-test-sources</outputDirectory>
+							<testOutputDirectory>${project.basedir}/target/generated-test-sources</testOutputDirectory>
+							<testSourceDirectory>${project.basedir}/src/test/resources/avro</testSourceDirectory>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
 </project>

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/GlobalKTableBinder.java

@@ -0,0 +1,104 @@
+/*
+ * Copyright 2018 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.cloud.stream.binder.kafka.streams;
+
+import java.util.Map;
+
+import org.apache.kafka.streams.kstream.GlobalKTable;
+
+import org.springframework.cloud.stream.binder.AbstractBinder;
+import org.springframework.cloud.stream.binder.BinderSpecificPropertiesProvider;
+import org.springframework.cloud.stream.binder.Binding;
+import org.springframework.cloud.stream.binder.DefaultBinding;
+import org.springframework.cloud.stream.binder.ExtendedConsumerProperties;
+import org.springframework.cloud.stream.binder.ExtendedProducerProperties;
+import org.springframework.cloud.stream.binder.ExtendedPropertiesBinder;
+import org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner;
+import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsBinderConfigurationProperties;
+import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsConsumerProperties;
+import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsExtendedBindingProperties;
+import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsProducerProperties;
+import org.springframework.util.StringUtils;
+
+/**
+ * An {@link AbstractBinder} implementation for {@link GlobalKTable}.
+ *
+ * Provides only consumer binding for the bound {@link GlobalKTable}.
+ * Output bindings are not allowed on this binder.
+ *
+ * @author Soby Chacko
+ * @since 2.1.0
+ */
+public class GlobalKTableBinder extends
+		AbstractBinder<GlobalKTable<Object, Object>, ExtendedConsumerProperties<KafkaStreamsConsumerProperties>, ExtendedProducerProperties<KafkaStreamsProducerProperties>>
+		implements ExtendedPropertiesBinder<GlobalKTable<Object, Object>, KafkaStreamsConsumerProperties, KafkaStreamsProducerProperties> {
+
+	private final KafkaStreamsBinderConfigurationProperties binderConfigurationProperties;
+
+	private final KafkaTopicProvisioner kafkaTopicProvisioner;
+
+	private final Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers;
+
+	private KafkaStreamsExtendedBindingProperties kafkaStreamsExtendedBindingProperties = new KafkaStreamsExtendedBindingProperties();
+
+	public GlobalKTableBinder(KafkaStreamsBinderConfigurationProperties binderConfigurationProperties, KafkaTopicProvisioner kafkaTopicProvisioner,
+							Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers) {
+		this.binderConfigurationProperties = binderConfigurationProperties;
+		this.kafkaTopicProvisioner = kafkaTopicProvisioner;
+		this.kafkaStreamsDlqDispatchers = kafkaStreamsDlqDispatchers;
+	}
+
+	@Override
+	@SuppressWarnings("unchecked")
+	protected Binding<GlobalKTable<Object, Object>> doBindConsumer(String name, String group, GlobalKTable<Object, Object> inputTarget,
+															ExtendedConsumerProperties<KafkaStreamsConsumerProperties> properties) {
+		if (!StringUtils.hasText(group)) {
+			group = this.binderConfigurationProperties.getApplicationId();
+		}
+		KafkaStreamsBinderUtils.prepareConsumerBinding(name, group, getApplicationContext(),
+				this.kafkaTopicProvisioner,
+				this.binderConfigurationProperties, properties, this.kafkaStreamsDlqDispatchers);
+		return new DefaultBinding<>(name, group, inputTarget, null);
+	}
+
+	@Override
+	protected Binding<GlobalKTable<Object, Object>> doBindProducer(String name, GlobalKTable<Object, Object> outboundBindTarget,
+															ExtendedProducerProperties<KafkaStreamsProducerProperties> properties) {
+		throw new UnsupportedOperationException("No producer level binding is allowed for GlobalKTable");
+	}
+
+	@Override
+	public KafkaStreamsConsumerProperties getExtendedConsumerProperties(String channelName) {
+		return this.kafkaStreamsExtendedBindingProperties.getExtendedConsumerProperties(channelName);
+	}
+
+	@Override
+	public KafkaStreamsProducerProperties getExtendedProducerProperties(String channelName) {
+		throw new UnsupportedOperationException("No producer binding is allowed and therefore no properties");
+	}
+
+	@Override
+	public String getDefaultsPrefix() {
+		return this.kafkaStreamsExtendedBindingProperties.getDefaultsPrefix();
+	}
+
+	@Override
+	public Class<? extends BinderSpecificPropertiesProvider> getExtendedPropertiesEntryClass() {
+		return this.kafkaStreamsExtendedBindingProperties.getExtendedPropertiesEntryClass();
+	}
+
+}

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/GlobalKTableBinderConfiguration.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2018 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.cloud.stream.binder.kafka.streams;
+
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
+import org.springframework.cloud.stream.binder.kafka.properties.KafkaBinderConfigurationProperties;
+import org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner;
+import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsBinderConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+/**
+ * Configuration for GlobalKTable binder.
+ *
+ * @author Soby Chacko
+ * @since 2.1.0
+ */
+@Configuration
+@Import(KafkaStreamsBinderUtils.KafkaStreamsMissingBeansRegistrar.class)
+public class GlobalKTableBinderConfiguration {
+
+	@Bean
+	public KafkaTopicProvisioner provisioningProvider(KafkaBinderConfigurationProperties binderConfigurationProperties,
+													KafkaProperties kafkaProperties) {
+		return new KafkaTopicProvisioner(binderConfigurationProperties, kafkaProperties);
+	}
+
+	@Bean
+	public GlobalKTableBinder GlobalKTableBinder(KafkaStreamsBinderConfigurationProperties binderConfigurationProperties,
+									KafkaTopicProvisioner kafkaTopicProvisioner,
+									@Qualifier("kafkaStreamsDlqDispatchers") Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers) {
+		return new GlobalKTableBinder(binderConfigurationProperties, kafkaTopicProvisioner, kafkaStreamsDlqDispatchers);
+	}
+}

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/GlobalKTableBoundElementFactory.java

@@ -0,0 +1,96 @@
+/*
+ * Copyright 2018 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.cloud.stream.binder.kafka.streams;
+
+import org.aopalliance.intercept.MethodInterceptor;
+import org.aopalliance.intercept.MethodInvocation;
+import org.apache.kafka.streams.kstream.GlobalKTable;
+
+import org.springframework.aop.framework.ProxyFactory;
+import org.springframework.cloud.stream.binder.ConsumerProperties;
+import org.springframework.cloud.stream.binding.AbstractBindingTargetFactory;
+import org.springframework.cloud.stream.config.BindingServiceProperties;
+import org.springframework.util.Assert;
+
+/**
+ * {@link org.springframework.cloud.stream.binding.BindingTargetFactory} for {@link GlobalKTable}
+ *
+ * Input bindings are only created as output bindings on GlobalKTable are not allowed.
+ *
+ * @author Soby Chacko
+ * @since 2.1.0
+ */
+public class GlobalKTableBoundElementFactory extends AbstractBindingTargetFactory<GlobalKTable> {
+
+	private final BindingServiceProperties bindingServiceProperties;
+
+	GlobalKTableBoundElementFactory(BindingServiceProperties bindingServiceProperties) {
+		super(GlobalKTable.class);
+		this.bindingServiceProperties = bindingServiceProperties;
+	}
+
+	@Override
+	public GlobalKTable createInput(String name) {
+		ConsumerProperties consumerProperties = this.bindingServiceProperties.getConsumerProperties(name);
+		//Always set multiplex to true in the kafka streams binder
+		consumerProperties.setMultiplex(true);
+
+		GlobalKTableBoundElementFactory.GlobalKTableWrapperHandler wrapper = new GlobalKTableBoundElementFactory.GlobalKTableWrapperHandler();
+		ProxyFactory proxyFactory = new ProxyFactory(GlobalKTableBoundElementFactory.GlobalKTableWrapper.class, GlobalKTable.class);
+		proxyFactory.addAdvice(wrapper);
+
+		return (GlobalKTable) proxyFactory.getProxy();
+	}
+
+	@Override
+	public GlobalKTable createOutput(String name) {
+		throw new UnsupportedOperationException("Outbound operations are not allowed on target type GlobalKTable");
+	}
+
+	/**
+	 * Wrapper for GlobalKTable proxy.
+	 */
+	public interface GlobalKTableWrapper {
+		void wrap(GlobalKTable<Object, Object> delegate);
+	}
+
+	private static class GlobalKTableWrapperHandler implements GlobalKTableBoundElementFactory.GlobalKTableWrapper, MethodInterceptor {
+
+		private GlobalKTable<Object, Object> delegate;
+
+		public void wrap(GlobalKTable<Object, Object> delegate) {
+			Assert.notNull(delegate, "delegate cannot be null");
+			Assert.isNull(this.delegate, "delegate already set to " + this.delegate);
+			this.delegate = delegate;
+		}
+
+		@Override
+		public Object invoke(MethodInvocation methodInvocation) throws Throwable {
+			if (methodInvocation.getMethod().getDeclaringClass().equals(GlobalKTable.class)) {
+				Assert.notNull(this.delegate, "Trying to prepareConsumerBinding " + methodInvocation
+						.getMethod() + "  but no delegate has been set.");
+				return methodInvocation.getMethod().invoke(this.delegate, methodInvocation.getArguments());
+			}
+			else if (methodInvocation.getMethod().getDeclaringClass().equals(GlobalKTableBoundElementFactory.GlobalKTableWrapper.class)) {
+				return methodInvocation.getMethod().invoke(this, methodInvocation.getArguments());
+			}
+			else {
+				throw new IllegalStateException("Only GlobalKTable method invocations are permitted");
+			}
+		}
+	}
+}

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/InteractiveQueryService.java

@@ -45,9 +45,10 @@ public class InteractiveQueryService {
 	private final KafkaStreamsBinderConfigurationProperties binderConfigurationProperties;
 
 	/**
+	 * Constructor for InteractiveQueryService.
 	 *
 	 * @param kafkaStreamsRegistry holding {@link KafkaStreamsRegistry}
-	 * @param binderConfigurationProperties Kafka Streams binder configuration properties
+	 * @param binderConfigurationProperties kafka Streams binder configuration properties
 	 */
 	public InteractiveQueryService(KafkaStreamsRegistry kafkaStreamsRegistry,
 								KafkaStreamsBinderConfigurationProperties binderConfigurationProperties) {
@@ -60,12 +61,12 @@ public class InteractiveQueryService {
 	 *
 	 * @param storeName name of the queryable store
 	 * @param storeType type of the queryable store
-	 * @param <T>       generic queryable store
+	 * @param <T> generic queryable store
 	 * @return queryable store.
 	 */
 	public <T> T getQueryableStore(String storeName, QueryableStoreType<T> storeType) {
 		for (KafkaStreams kafkaStream : this.kafkaStreamsRegistry.getKafkaStreams()) {
-			try{
+			try {
 				T store = kafkaStream.store(storeName, storeType);
 				if (store != null) {
 					return store;
@@ -106,6 +107,7 @@ public class InteractiveQueryService {
 	 * Note that the end user applications must provide `applicaiton.server` as a configuration property
 	 * for all the application instances when calling this method. If this is not available, then null maybe returned.
 	 *
+	 * @param <K> generic type for key
 	 * @param store store name
 	 * @param key key to look for
 	 * @param serializer {@link Serializer} for the key
@@ -114,7 +116,7 @@ public class InteractiveQueryService {
 	public <K> HostInfo getHostInfo(String store, K key, Serializer<K> serializer) {
 		StreamsMetadata streamsMetadata = this.kafkaStreamsRegistry.getKafkaStreams()
 				.stream()
-				.map(k -> Optional.ofNullable(k.metadataForKey(store, key, serializer)))
+				.map((k) -> Optional.ofNullable(k.metadataForKey(store, key, serializer)))
 				.filter(Optional::isPresent)
 				.map(Optional::get)
 				.findFirst()

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KStreamBinder.java

@@ -16,21 +16,21 @@
 
 package org.springframework.cloud.stream.binder.kafka.streams;
 
+import java.util.Map;
+
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.kafka.common.serialization.Serde;
-import org.apache.kafka.streams.StreamsConfig;
-import org.apache.kafka.streams.errors.DeserializationExceptionHandler;
 import org.apache.kafka.streams.kstream.KStream;
 import org.apache.kafka.streams.kstream.Produced;
 
 import org.springframework.cloud.stream.binder.AbstractBinder;
+import org.springframework.cloud.stream.binder.BinderSpecificPropertiesProvider;
 import org.springframework.cloud.stream.binder.Binding;
 import org.springframework.cloud.stream.binder.DefaultBinding;
 import org.springframework.cloud.stream.binder.ExtendedConsumerProperties;
 import org.springframework.cloud.stream.binder.ExtendedProducerProperties;
 import org.springframework.cloud.stream.binder.ExtendedPropertiesBinder;
-import org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties;
 import org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties;
 import org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsBinderConfigurationProperties;
@@ -52,7 +52,7 @@ class KStreamBinder extends
 		AbstractBinder<KStream<Object, Object>, ExtendedConsumerProperties<KafkaStreamsConsumerProperties>, ExtendedProducerProperties<KafkaStreamsProducerProperties>>
 		implements ExtendedPropertiesBinder<KStream<Object, Object>, KafkaStreamsConsumerProperties, KafkaStreamsProducerProperties> {
 
-	private final static Log LOG = LogFactory.getLog(KStreamBinder.class);
+	private static final Log LOG = LogFactory.getLog(KStreamBinder.class);
 
 	private final KafkaTopicProvisioner kafkaTopicProvisioner;
 
@@ -62,63 +62,37 @@ class KStreamBinder extends
 
 	private final KafkaStreamsMessageConversionDelegate kafkaStreamsMessageConversionDelegate;
 
-	private final KafkaStreamsBindingInformationCatalogue KafkaStreamsBindingInformationCatalogue;
+	private final KafkaStreamsBindingInformationCatalogue kafkaStreamsBindingInformationCatalogue;
 
 	private final KeyValueSerdeResolver keyValueSerdeResolver;
 
+	private final Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers;
+
 	KStreamBinder(KafkaStreamsBinderConfigurationProperties binderConfigurationProperties,
 				KafkaTopicProvisioner kafkaTopicProvisioner,
 				KafkaStreamsMessageConversionDelegate kafkaStreamsMessageConversionDelegate,
 				KafkaStreamsBindingInformationCatalogue KafkaStreamsBindingInformationCatalogue,
-				KeyValueSerdeResolver keyValueSerdeResolver) {
+				KeyValueSerdeResolver keyValueSerdeResolver,
+				Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers) {
 		this.binderConfigurationProperties = binderConfigurationProperties;
 		this.kafkaTopicProvisioner = kafkaTopicProvisioner;
 		this.kafkaStreamsMessageConversionDelegate = kafkaStreamsMessageConversionDelegate;
-		this.KafkaStreamsBindingInformationCatalogue = KafkaStreamsBindingInformationCatalogue;
+		this.kafkaStreamsBindingInformationCatalogue = KafkaStreamsBindingInformationCatalogue;
 		this.keyValueSerdeResolver = keyValueSerdeResolver;
+		this.kafkaStreamsDlqDispatchers = kafkaStreamsDlqDispatchers;
 	}
 
 	@Override
-	@SuppressWarnings("unchecked")
 	protected Binding<KStream<Object, Object>> doBindConsumer(String name, String group,
 															KStream<Object, Object> inputTarget,
 															ExtendedConsumerProperties<KafkaStreamsConsumerProperties> properties) {
-		this.KafkaStreamsBindingInformationCatalogue.registerConsumerProperties(inputTarget, properties.getExtension());
-		ExtendedConsumerProperties<KafkaConsumerProperties> extendedConsumerProperties = new ExtendedConsumerProperties<>(
-				properties.getExtension());
-		if (binderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.sendToDlq) {
-			extendedConsumerProperties.getExtension().setEnableDlq(true);
-		}
+		this.kafkaStreamsBindingInformationCatalogue.registerConsumerProperties(inputTarget, properties.getExtension());
 		if (!StringUtils.hasText(group)) {
-			group = binderConfigurationProperties.getApplicationId();
-		}
-
-		String[] inputTopics = StringUtils.commaDelimitedListToStringArray(name);
-		for (String inputTopic : inputTopics) {
-			this.kafkaTopicProvisioner.provisionConsumerDestination(inputTopic, group, extendedConsumerProperties);
-		}
-
-		if (extendedConsumerProperties.getExtension().isEnableDlq()) {
-			StreamsConfig streamsConfig = this.KafkaStreamsBindingInformationCatalogue.getStreamsConfig(inputTarget);
-
-			KafkaStreamsDlqDispatch kafkaStreamsDlqDispatch = !StringUtils.isEmpty(extendedConsumerProperties.getExtension().getDlqName()) ?
-					new KafkaStreamsDlqDispatch(extendedConsumerProperties.getExtension().getDlqName(), binderConfigurationProperties,
-							extendedConsumerProperties.getExtension()) : null;
-			for (String inputTopic : inputTopics) {
-				if (StringUtils.isEmpty(extendedConsumerProperties.getExtension().getDlqName())) {
-					String dlqName = "error." + inputTopic + "." + group;
-					kafkaStreamsDlqDispatch = new KafkaStreamsDlqDispatch(dlqName, binderConfigurationProperties,
-							extendedConsumerProperties.getExtension());
-				}
-				SendToDlqAndContinue sendToDlqAndContinue = this.getApplicationContext().getBean(SendToDlqAndContinue.class);
-				sendToDlqAndContinue.addKStreamDlqDispatch(inputTopic, kafkaStreamsDlqDispatch);
-
-				DeserializationExceptionHandler deserializationExceptionHandler = streamsConfig.defaultDeserializationExceptionHandler();
-				if (deserializationExceptionHandler instanceof SendToDlqAndContinue) {
-					((SendToDlqAndContinue) deserializationExceptionHandler).addKStreamDlqDispatch(inputTopic, kafkaStreamsDlqDispatch);
-				}
-			}
+			group = this.binderConfigurationProperties.getApplicationId();
 		}
+		KafkaStreamsBinderUtils.prepareConsumerBinding(name, group, getApplicationContext(),
+				this.kafkaTopicProvisioner,
+				this.binderConfigurationProperties, properties, this.kafkaStreamsDlqDispatchers);
 
 		return new DefaultBinding<>(name, group, inputTarget, null);
 	}
@@ -141,9 +115,10 @@ class KStreamBinder extends
 					Serde<Object> keySerde, Serde<Object> valueSerde) {
 		if (!isNativeEncoding) {
 			LOG.info("Native encoding is disabled for " + name + ". Outbound message conversion done by Spring Cloud Stream.");
-			kafkaStreamsMessageConversionDelegate.serializeOnOutbound(outboundBindTarget)
+			this.kafkaStreamsMessageConversionDelegate.serializeOnOutbound(outboundBindTarget)
 					.to(name, Produced.with(keySerde, valueSerde));
-		} else {
+		}
+		else {
 			LOG.info("Native encoding is enabled for " + name + ". Outbound serialization done at the broker.");
 			outboundBindTarget.to(name, Produced.with(keySerde, valueSerde));
 		}
@@ -162,4 +137,14 @@ class KStreamBinder extends
 	public void setKafkaStreamsExtendedBindingProperties(KafkaStreamsExtendedBindingProperties kafkaStreamsExtendedBindingProperties) {
 		this.kafkaStreamsExtendedBindingProperties = kafkaStreamsExtendedBindingProperties;
 	}
+
+	@Override
+	public String getDefaultsPrefix() {
+		return this.kafkaStreamsExtendedBindingProperties.getDefaultsPrefix();
+	}
+
+	@Override
+	public Class<? extends BinderSpecificPropertiesProvider> getExtendedPropertiesEntryClass() {
+		return this.kafkaStreamsExtendedBindingProperties.getExtendedPropertiesEntryClass();
+	}
 }

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KStreamBinderConfiguration.java

@@ -16,46 +16,35 @@
 
 package org.springframework.cloud.stream.binder.kafka.streams;
 
-import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.beans.factory.config.MethodInvokingFactoryBean;
+import org.springframework.beans.factory.support.AbstractBeanDefinition;
+import org.springframework.beans.factory.support.BeanDefinitionBuilder;
+import org.springframework.beans.factory.support.BeanDefinitionRegistry;
 import org.springframework.boot.autoconfigure.kafka.KafkaAutoConfiguration;
 import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
 import org.springframework.cloud.stream.binder.kafka.properties.KafkaBinderConfigurationProperties;
 import org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsBinderConfigurationProperties;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsExtendedBindingProperties;
-import org.springframework.context.ApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
+import org.springframework.core.type.AnnotationMetadata;
 
 /**
+ * Configuration for KStream binder.
+ *
  * @author Marius Bogoevici
  * @author Gary Russell
  * @author Soby Chacko
  */
 @Configuration
-@Import({KafkaAutoConfiguration.class})
+@Import({KafkaAutoConfiguration.class, KStreamBinderConfiguration.KStreamMissingBeansRegistrar.class})
 public class KStreamBinderConfiguration {
 
-	@Bean
-	@ConditionalOnBean(name = "outerContext")
-	public BeanFactoryPostProcessor outerContextBeanFactoryPostProcessor() {
-		return beanFactory -> {
-			ApplicationContext outerContext = (ApplicationContext) beanFactory.getBean("outerContext");
-			beanFactory.registerSingleton(KafkaStreamsBinderConfigurationProperties.class.getSimpleName(), outerContext
-					.getBean(KafkaStreamsBinderConfigurationProperties.class));
-			beanFactory.registerSingleton(KafkaStreamsMessageConversionDelegate.class.getSimpleName(), outerContext
-					.getBean(KafkaStreamsMessageConversionDelegate.class));
-			beanFactory.registerSingleton(KafkaStreamsBindingInformationCatalogue.class.getSimpleName(), outerContext
-					.getBean(KafkaStreamsBindingInformationCatalogue.class));
-			beanFactory.registerSingleton(KeyValueSerdeResolver.class.getSimpleName(), outerContext
-					.getBean(KeyValueSerdeResolver.class));
-			beanFactory.registerSingleton(KafkaStreamsExtendedBindingProperties.class.getSimpleName(), outerContext
-					.getBean(KafkaStreamsExtendedBindingProperties.class));
-		};
-	}
-
 	@Bean
 	public KafkaTopicProvisioner provisioningProvider(KafkaBinderConfigurationProperties binderConfigurationProperties,
 													KafkaProperties kafkaProperties) {
@@ -68,12 +57,54 @@ public class KStreamBinderConfiguration {
 									KafkaStreamsMessageConversionDelegate KafkaStreamsMessageConversionDelegate,
 									KafkaStreamsBindingInformationCatalogue KafkaStreamsBindingInformationCatalogue,
 									KeyValueSerdeResolver keyValueSerdeResolver,
-									KafkaStreamsExtendedBindingProperties kafkaStreamsExtendedBindingProperties) {
+									KafkaStreamsExtendedBindingProperties kafkaStreamsExtendedBindingProperties,
+									@Qualifier("kafkaStreamsDlqDispatchers") Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers) {
 		KStreamBinder kStreamBinder = new KStreamBinder(binderConfigurationProperties, kafkaTopicProvisioner,
 				KafkaStreamsMessageConversionDelegate, KafkaStreamsBindingInformationCatalogue,
-				keyValueSerdeResolver);
+				keyValueSerdeResolver, kafkaStreamsDlqDispatchers);
 		kStreamBinder.setKafkaStreamsExtendedBindingProperties(kafkaStreamsExtendedBindingProperties);
 		return kStreamBinder;
 	}
 
+	/**
+	 * Registrar for missing beans when there are multiple binders in the application.
+	 */
+	static class KStreamMissingBeansRegistrar extends KafkaStreamsBinderUtils.KafkaStreamsMissingBeansRegistrar {
+
+		private static final String BEAN_NAME = "outerContext";
+
+		@Override
+		public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata,
+											BeanDefinitionRegistry registry) {
+			super.registerBeanDefinitions(importingClassMetadata, registry);
+
+			if (registry.containsBeanDefinition(BEAN_NAME)) {
+
+				AbstractBeanDefinition converstionDelegateBean = BeanDefinitionBuilder.genericBeanDefinition(MethodInvokingFactoryBean.class)
+						.addPropertyReference("targetObject", BEAN_NAME)
+						.addPropertyValue("targetMethod", "getBean")
+						.addPropertyValue("arguments", KafkaStreamsMessageConversionDelegate.class)
+						.getBeanDefinition();
+
+				registry.registerBeanDefinition(KafkaStreamsMessageConversionDelegate.class.getSimpleName(), converstionDelegateBean);
+
+				AbstractBeanDefinition keyValueSerdeResolverBean = BeanDefinitionBuilder.genericBeanDefinition(MethodInvokingFactoryBean.class)
+						.addPropertyReference("targetObject", BEAN_NAME)
+						.addPropertyValue("targetMethod", "getBean")
+						.addPropertyValue("arguments", KeyValueSerdeResolver.class)
+						.getBeanDefinition();
+
+				registry.registerBeanDefinition(KeyValueSerdeResolver.class.getSimpleName(), keyValueSerdeResolverBean);
+
+				AbstractBeanDefinition kafkaStreamsExtendedBindingPropertiesBean = BeanDefinitionBuilder.genericBeanDefinition(MethodInvokingFactoryBean.class)
+						.addPropertyReference("targetObject", BEAN_NAME)
+						.addPropertyValue("targetMethod", "getBean")
+						.addPropertyValue("arguments", KafkaStreamsExtendedBindingProperties.class)
+						.getBeanDefinition();
+
+				registry.registerBeanDefinition(KafkaStreamsExtendedBindingProperties.class.getSimpleName(), kafkaStreamsExtendedBindingPropertiesBean);
+			}
+		}
+	}
+
 }

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KStreamBoundElementFactory.java

@@ -64,18 +64,21 @@ class KStreamBoundElementFactory extends AbstractBindingTargetFactory<KStream> {
 	}
 
 	private KStream createProxyForKStream(String name) {
-		KStreamWrapperHandler wrapper= new KStreamWrapperHandler();
+		KStreamWrapperHandler wrapper = new KStreamWrapperHandler();
 		ProxyFactory proxyFactory = new ProxyFactory(KStreamWrapper.class, KStream.class);
 		proxyFactory.addAdvice(wrapper);
 
 		KStream proxy = (KStream) proxyFactory.getProxy();
 
 		//Add the binding properties to the catalogue for later retrieval during further binding steps downstream.
-		BindingProperties bindingProperties = bindingServiceProperties.getBindingProperties(name);
+		BindingProperties bindingProperties = this.bindingServiceProperties.getBindingProperties(name);
 		this.kafkaStreamsBindingInformationCatalogue.registerBindingProperties(proxy, bindingProperties);
 		return proxy;
 	}
 
+	/**
+	 * Wrapper object for KStream proxy.
+	 */
 	public interface KStreamWrapper {
 
 		void wrap(KStream<Object, Object> delegate);
@@ -95,9 +98,9 @@ class KStreamBoundElementFactory extends AbstractBindingTargetFactory<KStream> {
 		@Override
 		public Object invoke(MethodInvocation methodInvocation) throws Throwable {
 			if (methodInvocation.getMethod().getDeclaringClass().equals(KStream.class)) {
-				Assert.notNull(delegate, "Trying to invoke " + methodInvocation
+				Assert.notNull(this.delegate, "Trying to prepareConsumerBinding " + methodInvocation
 						.getMethod() + "  but no delegate has been set.");
-				return methodInvocation.getMethod().invoke(delegate, methodInvocation.getArguments());
+				return methodInvocation.getMethod().invoke(this.delegate, methodInvocation.getArguments());
 			}
 			else if (methodInvocation.getMethod().getDeclaringClass().equals(KStreamWrapper.class)) {
 				return methodInvocation.getMethod().invoke(this, methodInvocation.getArguments());

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KStreamStreamListenerParameterAdapter.java

@@ -16,19 +16,19 @@
 
 package org.springframework.cloud.stream.binder.kafka.streams;
 
-import org.apache.kafka.streams.KeyValue;
 import org.apache.kafka.streams.kstream.KStream;
-import org.apache.kafka.streams.kstream.KeyValueMapper;
 
 import org.springframework.cloud.stream.binding.StreamListenerParameterAdapter;
 import org.springframework.core.MethodParameter;
 import org.springframework.core.ResolvableType;
 
 /**
+ * {@link StreamListenerParameterAdapter} for KStream.
+ *
  * @author Marius Bogoevici
  * @author Soby Chacko
  */
-class KStreamStreamListenerParameterAdapter implements StreamListenerParameterAdapter<KStream<?,?>, KStream<?, ?>> {
+class KStreamStreamListenerParameterAdapter implements StreamListenerParameterAdapter<KStream<?, ?>, KStream<?, ?>> {
 
 	private final KafkaStreamsMessageConversionDelegate kafkaStreamsMessageConversionDelegate;
 	private final KafkaStreamsBindingInformationCatalogue KafkaStreamsBindingInformationCatalogue;
@@ -52,10 +52,10 @@ class KStreamStreamListenerParameterAdapter implements StreamListenerParameterAd
 		final Class<?> valueClass = (resolvableType.getGeneric(1).getRawClass() != null)
 				? (resolvableType.getGeneric(1).getRawClass()) : Object.class;
 		if (this.KafkaStreamsBindingInformationCatalogue.isUseNativeDecoding(bindingTarget)) {
-			return bindingTarget.map((KeyValueMapper) KeyValue::new);
+			return bindingTarget;
 		}
 		else {
-			return kafkaStreamsMessageConversionDelegate.deserializeOnInbound(valueClass, bindingTarget);
+			return this.kafkaStreamsMessageConversionDelegate.deserializeOnInbound(valueClass, bindingTarget);
 		}
 	}
 }

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KStreamStreamListenerResultAdapter.java

@@ -19,12 +19,13 @@ package org.springframework.cloud.stream.binder.kafka.streams;
 import java.io.Closeable;
 import java.io.IOException;
 
-import org.apache.kafka.streams.KeyValue;
 import org.apache.kafka.streams.kstream.KStream;
 
 import org.springframework.cloud.stream.binding.StreamListenerResultAdapter;
 
 /**
+ * {@link StreamListenerResultAdapter} for KStream.
+ *
  * @author Marius Bogoevici
  * @author Soby Chacko
  */
@@ -38,7 +39,7 @@ class KStreamStreamListenerResultAdapter implements StreamListenerResultAdapter<
 	@Override
 	@SuppressWarnings("unchecked")
 	public Closeable adapt(KStream streamListenerResult, KStreamBoundElementFactory.KStreamWrapper boundElement) {
-		boundElement.wrap(streamListenerResult.map(KeyValue::new));
+		boundElement.wrap(streamListenerResult);
 		return new NoOpCloseable();
 	}
 

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KTableBinder.java

@@ -16,17 +16,17 @@
 
 package org.springframework.cloud.stream.binder.kafka.streams;
 
-import org.apache.kafka.streams.StreamsConfig;
-import org.apache.kafka.streams.errors.DeserializationExceptionHandler;
+import java.util.Map;
+
 import org.apache.kafka.streams.kstream.KTable;
 
 import org.springframework.cloud.stream.binder.AbstractBinder;
+import org.springframework.cloud.stream.binder.BinderSpecificPropertiesProvider;
 import org.springframework.cloud.stream.binder.Binding;
 import org.springframework.cloud.stream.binder.DefaultBinding;
 import org.springframework.cloud.stream.binder.ExtendedConsumerProperties;
 import org.springframework.cloud.stream.binder.ExtendedProducerProperties;
 import org.springframework.cloud.stream.binder.ExtendedPropertiesBinder;
-import org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties;
 import org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsBinderConfigurationProperties;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsConsumerProperties;
@@ -50,56 +50,27 @@ class KTableBinder extends
 
 	private final KafkaTopicProvisioner kafkaTopicProvisioner;
 
-	private final KafkaStreamsBindingInformationCatalogue KafkaStreamsBindingInformationCatalogue;
+	private Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers;
 
 	private KafkaStreamsExtendedBindingProperties kafkaStreamsExtendedBindingProperties = new KafkaStreamsExtendedBindingProperties();
 
 	KTableBinder(KafkaStreamsBinderConfigurationProperties binderConfigurationProperties, KafkaTopicProvisioner kafkaTopicProvisioner,
-						KafkaStreamsBindingInformationCatalogue kafkaStreamsBindingInformationCatalogue) {
+				Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers) {
 		this.binderConfigurationProperties = binderConfigurationProperties;
 		this.kafkaTopicProvisioner = kafkaTopicProvisioner;
-		this.KafkaStreamsBindingInformationCatalogue = kafkaStreamsBindingInformationCatalogue;
+		this.kafkaStreamsDlqDispatchers = kafkaStreamsDlqDispatchers;
 	}
 
 	@Override
 	@SuppressWarnings("unchecked")
 	protected Binding<KTable<Object, Object>> doBindConsumer(String name, String group, KTable<Object, Object> inputTarget,
 															ExtendedConsumerProperties<KafkaStreamsConsumerProperties> properties) {
-		ExtendedConsumerProperties<KafkaConsumerProperties> extendedConsumerProperties = new ExtendedConsumerProperties<>(
-				properties.getExtension());
-		if (binderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.sendToDlq) {
-			extendedConsumerProperties.getExtension().setEnableDlq(true);
-		}
 		if (!StringUtils.hasText(group)) {
-			group = binderConfigurationProperties.getApplicationId();
-		}
-
-		String[] inputTopics = StringUtils.commaDelimitedListToStringArray(name);
-		for (String inputTopic : inputTopics) {
-			this.kafkaTopicProvisioner.provisionConsumerDestination(inputTopic, group, extendedConsumerProperties);
-		}
-
-		if (extendedConsumerProperties.getExtension().isEnableDlq()) {
-			StreamsConfig streamsConfig = this.KafkaStreamsBindingInformationCatalogue.getStreamsConfig(inputTarget);
-
-			KafkaStreamsDlqDispatch kafkaStreamsDlqDispatch = !StringUtils.isEmpty(extendedConsumerProperties.getExtension().getDlqName()) ?
-					new KafkaStreamsDlqDispatch(extendedConsumerProperties.getExtension().getDlqName(), binderConfigurationProperties,
-							extendedConsumerProperties.getExtension()) : null;
-			for (String inputTopic : inputTopics) {
-				if (StringUtils.isEmpty(extendedConsumerProperties.getExtension().getDlqName())) {
-					String dlqName = "error." + inputTopic + "." + group;
-					kafkaStreamsDlqDispatch = new KafkaStreamsDlqDispatch(dlqName, binderConfigurationProperties,
-							extendedConsumerProperties.getExtension());
-				}
-				SendToDlqAndContinue sendToDlqAndContinue = this.getApplicationContext().getBean(SendToDlqAndContinue.class);
-				sendToDlqAndContinue.addKStreamDlqDispatch(inputTopic, kafkaStreamsDlqDispatch);
-
-				DeserializationExceptionHandler deserializationExceptionHandler = streamsConfig.defaultDeserializationExceptionHandler();
-				if (deserializationExceptionHandler instanceof SendToDlqAndContinue) {
-					((SendToDlqAndContinue) deserializationExceptionHandler).addKStreamDlqDispatch(inputTopic, kafkaStreamsDlqDispatch);
-				}
-			}
+			group = this.binderConfigurationProperties.getApplicationId();
 		}
+		KafkaStreamsBinderUtils.prepareConsumerBinding(name, group, getApplicationContext(),
+				this.kafkaTopicProvisioner,
+				this.binderConfigurationProperties, properties, this.kafkaStreamsDlqDispatchers);
 		return new DefaultBinding<>(name, group, inputTarget, null);
 	}
 
@@ -118,4 +89,14 @@ class KTableBinder extends
 	public KafkaStreamsProducerProperties getExtendedProducerProperties(String channelName) {
 		return this.kafkaStreamsExtendedBindingProperties.getExtendedProducerProperties(channelName);
 	}
+
+	@Override
+	public String getDefaultsPrefix() {
+		return this.kafkaStreamsExtendedBindingProperties.getDefaultsPrefix();
+	}
+
+	@Override
+	public Class<? extends BinderSpecificPropertiesProvider> getExtendedPropertiesEntryClass() {
+		return this.kafkaStreamsExtendedBindingProperties.getExtendedPropertiesEntryClass();
+	}
 }

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KTableBinderConfiguration.java

@@ -16,6 +16,9 @@
 
 package org.springframework.cloud.stream.binder.kafka.streams;
 
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
@@ -25,17 +28,22 @@ import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStr
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
 
 /**
+ * Configuration for KTable binder.
+ *
  * @author Soby Chacko
  */
+@SuppressWarnings("ALL")
 @Configuration
+@Import(KafkaStreamsBinderUtils.KafkaStreamsMissingBeansRegistrar.class)
 public class KTableBinderConfiguration {
 
 	@Bean
 	@ConditionalOnBean(name = "outerContext")
 	public BeanFactoryPostProcessor outerContextBeanFactoryPostProcessor() {
-		return beanFactory -> {
+		return (beanFactory) -> {
 			ApplicationContext outerContext = (ApplicationContext) beanFactory.getBean("outerContext");
 			beanFactory.registerSingleton(KafkaStreamsBinderConfigurationProperties.class.getSimpleName(), outerContext
 					.getBean(KafkaStreamsBinderConfigurationProperties.class));
@@ -53,9 +61,8 @@ public class KTableBinderConfiguration {
 	@Bean
 	public KTableBinder kTableBinder(KafkaStreamsBinderConfigurationProperties binderConfigurationProperties,
 									KafkaTopicProvisioner kafkaTopicProvisioner,
-									KafkaStreamsBindingInformationCatalogue KafkaStreamsBindingInformationCatalogue) {
-		KTableBinder kStreamBinder = new KTableBinder(binderConfigurationProperties, kafkaTopicProvisioner,
-				KafkaStreamsBindingInformationCatalogue);
+									@Qualifier("kafkaStreamsDlqDispatchers") Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers) {
+		KTableBinder kStreamBinder = new KTableBinder(binderConfigurationProperties, kafkaTopicProvisioner, kafkaStreamsDlqDispatchers);
 		return kStreamBinder;
 	}
 }

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KTableBoundElementFactory.java

@@ -48,7 +48,7 @@ class KTableBoundElementFactory extends AbstractBindingTargetFactory<KTable> {
 		//Always set multiplex to true in the kafka streams binder
 		consumerProperties.setMultiplex(true);
 
-		KTableBoundElementFactory.KTableWrapperHandler wrapper= new KTableBoundElementFactory.KTableWrapperHandler();
+		KTableBoundElementFactory.KTableWrapperHandler wrapper = new KTableBoundElementFactory.KTableWrapperHandler();
 		ProxyFactory proxyFactory = new ProxyFactory(KTableBoundElementFactory.KTableWrapper.class, KTable.class);
 		proxyFactory.addAdvice(wrapper);
 
@@ -61,6 +61,9 @@ class KTableBoundElementFactory extends AbstractBindingTargetFactory<KTable> {
 		throw new UnsupportedOperationException("Outbound operations are not allowed on target type KTable");
 	}
 
+	/**
+	 * Wrapper for KTable proxy.
+	 */
 	public interface KTableWrapper {
 		void wrap(KTable<Object, Object> delegate);
 	}
@@ -78,15 +81,15 @@ class KTableBoundElementFactory extends AbstractBindingTargetFactory<KTable> {
 		@Override
 		public Object invoke(MethodInvocation methodInvocation) throws Throwable {
 			if (methodInvocation.getMethod().getDeclaringClass().equals(KTable.class)) {
-				Assert.notNull(delegate, "Trying to invoke " + methodInvocation
+				Assert.notNull(this.delegate, "Trying to prepareConsumerBinding " + methodInvocation
 						.getMethod() + "  but no delegate has been set.");
-				return methodInvocation.getMethod().invoke(delegate, methodInvocation.getArguments());
+				return methodInvocation.getMethod().invoke(this.delegate, methodInvocation.getArguments());
 			}
 			else if (methodInvocation.getMethod().getDeclaringClass().equals(KTableBoundElementFactory.KTableWrapper.class)) {
 				return methodInvocation.getMethod().invoke(this, methodInvocation.getArguments());
 			}
 			else {
-				throw new IllegalStateException("Only KStream method invocations are permitted");
+				throw new IllegalStateException("Only KTable method invocations are permitted");
 			}
 		}
 	}

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KafkaStreamsApplicationSupportAutoConfiguration.java

@@ -25,6 +25,8 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 /**
+ * Application support configuration for Kafka Streams binder.
+ *
  * @author Soby Chacko
  */
 @Configuration

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KafkaStreamsBinderSupportAutoConfiguration.java

@@ -19,6 +19,8 @@ package org.springframework.cloud.stream.binder.kafka.streams;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Properties;
+import java.util.stream.Collectors;
 
 import org.apache.kafka.common.serialization.Serdes;
 import org.apache.kafka.streams.StreamsConfig;
@@ -34,16 +36,22 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsBinderConfigurationProperties;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsExtendedBindingProperties;
+import org.springframework.cloud.stream.binder.kafka.streams.serde.CompositeNonNativeSerde;
 import org.springframework.cloud.stream.binding.BindingService;
 import org.springframework.cloud.stream.binding.StreamListenerResultAdapter;
 import org.springframework.cloud.stream.config.BindingServiceConfiguration;
 import org.springframework.cloud.stream.config.BindingServiceProperties;
 import org.springframework.cloud.stream.converter.CompositeMessageConverterFactory;
 import org.springframework.context.annotation.Bean;
+import org.springframework.core.env.Environment;
+import org.springframework.kafka.config.KafkaStreamsConfiguration;
 import org.springframework.kafka.core.CleanupConfig;
 import org.springframework.util.ObjectUtils;
+import org.springframework.util.StringUtils;
 
 /**
+ * Kafka Streams binder configuration.
+ *
  * @author Marius Bogoevici
  * @author Soby Chacko
  * @author Gary Russell
@@ -59,30 +67,68 @@ public class KafkaStreamsBinderSupportAutoConfiguration {
 		return new KafkaStreamsBinderConfigurationProperties(kafkaProperties);
 	}
 
+	@Bean
+	public KafkaStreamsConfiguration kafkaStreamsConfiguration(KafkaStreamsBinderConfigurationProperties binderConfigurationProperties,
+															Environment environment) {
+		KafkaProperties kafkaProperties = binderConfigurationProperties.getKafkaProperties();
+		Map<String, Object> streamsProperties = kafkaProperties.buildStreamsProperties();
+		if (kafkaProperties.getStreams().getApplicationId() == null) {
+			String applicationName = environment.getProperty("spring.application.name");
+			if (applicationName != null) {
+				streamsProperties.put(StreamsConfig.APPLICATION_ID_CONFIG, applicationName);
+			}
+		}
+		return new KafkaStreamsConfiguration(streamsProperties);
+	}
+
 	@Bean("streamConfigGlobalProperties")
-	public Map<String, Object> streamConfigGlobalProperties(KafkaStreamsBinderConfigurationProperties binderConfigurationProperties) {
-		Map<String, Object> props = new HashMap<>();
-		props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, binderConfigurationProperties.getKafkaConnectionString());
-		props.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, Serdes.ByteArraySerde.class.getName());
-		props.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, Serdes.ByteArraySerde.class.getName());
-		props.put(StreamsConfig.APPLICATION_ID_CONFIG, binderConfigurationProperties.getApplicationId());
+	public Map<String, Object> streamConfigGlobalProperties(KafkaStreamsBinderConfigurationProperties binderConfigurationProperties,
+															KafkaStreamsConfiguration kafkaStreamsConfiguration) {
+
+		Properties properties = kafkaStreamsConfiguration.asProperties();
+		// Override Spring Boot bootstrap server setting if left to default with the value
+		// configured in the binder
+		if (ObjectUtils.isEmpty(properties.get(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG))) {
+			properties.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, binderConfigurationProperties.getKafkaConnectionString());
+		}
+		else {
+			Object bootstrapServerConfig = properties.get(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG);
+			if (bootstrapServerConfig instanceof String) {
+				@SuppressWarnings("unchecked")
+				String bootStrapServers = (String) properties
+						.get(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG);
+				if (bootStrapServers.equals("localhost:9092")) {
+					properties.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, binderConfigurationProperties.getKafkaConnectionString());
+				}
+			}
+		}
+
+		String binderProvidedApplicationId = binderConfigurationProperties.getApplicationId();
+		if (StringUtils.hasText(binderProvidedApplicationId)) {
+			properties.put(StreamsConfig.APPLICATION_ID_CONFIG, binderProvidedApplicationId);
+		}
+
+		properties.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, Serdes.ByteArraySerde.class.getName());
+		properties.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, Serdes.ByteArraySerde.class.getName());
 
 		if (binderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.logAndContinue) {
-			props.put(StreamsConfig.DEFAULT_DESERIALIZATION_EXCEPTION_HANDLER_CLASS_CONFIG,
-					LogAndContinueExceptionHandler.class);
-		} else if (binderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.logAndFail) {
-			props.put(StreamsConfig.DEFAULT_DESERIALIZATION_EXCEPTION_HANDLER_CLASS_CONFIG,
-					LogAndFailExceptionHandler.class);
-		} else if (binderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.sendToDlq) {
-			props.put(StreamsConfig.DEFAULT_DESERIALIZATION_EXCEPTION_HANDLER_CLASS_CONFIG,
-					SendToDlqAndContinue.class);
+			properties.put(StreamsConfig.DEFAULT_DESERIALIZATION_EXCEPTION_HANDLER_CLASS_CONFIG,
+					LogAndContinueExceptionHandler.class.getName());
+		}
+		else if (binderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.logAndFail) {
+			properties.put(StreamsConfig.DEFAULT_DESERIALIZATION_EXCEPTION_HANDLER_CLASS_CONFIG,
+					LogAndFailExceptionHandler.class.getName());
+		}
+		else if (binderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.sendToDlq) {
+			properties.put(StreamsConfig.DEFAULT_DESERIALIZATION_EXCEPTION_HANDLER_CLASS_CONFIG,
+					SendToDlqAndContinue.class.getName());
 		}
 
 		if (!ObjectUtils.isEmpty(binderConfigurationProperties.getConfiguration())) {
-			props.putAll(binderConfigurationProperties.getConfiguration());
+			properties.putAll(binderConfigurationProperties.getConfiguration());
 		}
-
-		return props;
+		return properties.entrySet().stream().collect(
+				Collectors.toMap((e) -> String.valueOf(e.getKey()), Map.Entry::getValue));
 	}
 
 	@Bean
@@ -104,11 +150,10 @@ public class KafkaStreamsBinderSupportAutoConfiguration {
 			KafkaStreamsBindingInformationCatalogue kafkaStreamsBindingInformationCatalogue,
 			KStreamStreamListenerParameterAdapter kafkaStreamListenerParameterAdapter,
 			Collection<StreamListenerResultAdapter> streamListenerResultAdapters,
-			KafkaStreamsBinderConfigurationProperties binderConfigurationProperties,
 			ObjectProvider<CleanupConfig> cleanupConfig) {
 		return new KafkaStreamsStreamListenerSetupMethodOrchestrator(bindingServiceProperties,
 				kafkaStreamsExtendedBindingProperties, keyValueSerdeResolver, kafkaStreamsBindingInformationCatalogue,
-				kafkaStreamListenerParameterAdapter, streamListenerResultAdapters, binderConfigurationProperties,
+				kafkaStreamListenerParameterAdapter, streamListenerResultAdapters,
 				cleanupConfig.getIfUnique());
 	}
 
@@ -121,6 +166,11 @@ public class KafkaStreamsBinderSupportAutoConfiguration {
 				KafkaStreamsBindingInformationCatalogue, binderConfigurationProperties);
 	}
 
+	@Bean
+	public CompositeNonNativeSerde compositeNonNativeSerde(CompositeMessageConverterFactory compositeMessageConverterFactory) {
+		return new CompositeNonNativeSerde(compositeMessageConverterFactory);
+	}
+
 	@Bean
 	public KStreamBoundElementFactory kStreamBoundElementFactory(BindingServiceProperties bindingServiceProperties,
 																	KafkaStreamsBindingInformationCatalogue KafkaStreamsBindingInformationCatalogue) {
@@ -133,6 +183,11 @@ public class KafkaStreamsBinderSupportAutoConfiguration {
 		return new KTableBoundElementFactory(bindingServiceProperties);
 	}
 
+	@Bean
+	public GlobalKTableBoundElementFactory globalKTableBoundElementFactory(BindingServiceProperties bindingServiceProperties) {
+		return new GlobalKTableBoundElementFactory(bindingServiceProperties);
+	}
+
 	@Bean
 	public SendToDlqAndContinue sendToDlqAndContinue() {
 		return new SendToDlqAndContinue();
@@ -172,4 +227,9 @@ public class KafkaStreamsBinderSupportAutoConfiguration {
 		return new StreamsBuilderFactoryManager(kafkaStreamsBindingInformationCatalogue, kafkaStreamsRegistry);
 	}
 
+	@Bean("kafkaStreamsDlqDispatchers")
+	public Map<String, KafkaStreamsDlqDispatch> dlqDispatchers() {
+		return new HashMap<>();
+	}
+
 }

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KafkaStreamsBinderUtils.java

@@ -0,0 +1,112 @@
+/*
+ * Copyright 2018 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.cloud.stream.binder.kafka.streams;
+
+import java.util.Map;
+
+import org.springframework.beans.factory.config.MethodInvokingFactoryBean;
+import org.springframework.beans.factory.support.AbstractBeanDefinition;
+import org.springframework.beans.factory.support.BeanDefinitionBuilder;
+import org.springframework.beans.factory.support.BeanDefinitionRegistry;
+import org.springframework.cloud.stream.binder.ExtendedConsumerProperties;
+import org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties;
+import org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner;
+import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsBinderConfigurationProperties;
+import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsConsumerProperties;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
+import org.springframework.core.type.AnnotationMetadata;
+import org.springframework.util.StringUtils;
+
+/**
+ * Common methods used by various Kafka Streams types across the binders.
+ *
+ * @author Soby Chacko
+ */
+final class KafkaStreamsBinderUtils {
+
+	private KafkaStreamsBinderUtils() {
+
+	}
+
+	static void prepareConsumerBinding(String name, String group, ApplicationContext context,
+											KafkaTopicProvisioner kafkaTopicProvisioner,
+											KafkaStreamsBinderConfigurationProperties binderConfigurationProperties,
+											ExtendedConsumerProperties<KafkaStreamsConsumerProperties> properties,
+											Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers) {
+		ExtendedConsumerProperties<KafkaConsumerProperties> extendedConsumerProperties = new ExtendedConsumerProperties<>(
+				properties.getExtension());
+		if (binderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.sendToDlq) {
+			extendedConsumerProperties.getExtension().setEnableDlq(true);
+		}
+
+		String[] inputTopics = StringUtils.commaDelimitedListToStringArray(name);
+		for (String inputTopic : inputTopics) {
+			kafkaTopicProvisioner.provisionConsumerDestination(inputTopic, group, extendedConsumerProperties);
+		}
+
+		if (extendedConsumerProperties.getExtension().isEnableDlq()) {
+			KafkaStreamsDlqDispatch kafkaStreamsDlqDispatch = !StringUtils.isEmpty(extendedConsumerProperties.getExtension().getDlqName()) ?
+					new KafkaStreamsDlqDispatch(extendedConsumerProperties.getExtension().getDlqName(), binderConfigurationProperties,
+							extendedConsumerProperties.getExtension()) : null;
+			for (String inputTopic : inputTopics) {
+				if (StringUtils.isEmpty(extendedConsumerProperties.getExtension().getDlqName())) {
+					String dlqName = "error." + inputTopic + "." + group;
+					kafkaStreamsDlqDispatch = new KafkaStreamsDlqDispatch(dlqName, binderConfigurationProperties,
+							extendedConsumerProperties.getExtension());
+				}
+
+				SendToDlqAndContinue sendToDlqAndContinue = context.getBean(SendToDlqAndContinue.class);
+				sendToDlqAndContinue.addKStreamDlqDispatch(inputTopic, kafkaStreamsDlqDispatch);
+
+				kafkaStreamsDlqDispatchers.put(inputTopic, kafkaStreamsDlqDispatch);
+			}
+		}
+	}
+
+	/**
+	 * Helper lass for missing bean registration.
+	 */
+	static class KafkaStreamsMissingBeansRegistrar implements ImportBeanDefinitionRegistrar {
+
+		private static final String BEAN_NAME = "outerContext";
+
+		@Override
+		public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata,
+											BeanDefinitionRegistry registry) {
+			if (registry.containsBeanDefinition(BEAN_NAME)) {
+
+				AbstractBeanDefinition configBean = BeanDefinitionBuilder.genericBeanDefinition(MethodInvokingFactoryBean.class)
+						.addPropertyReference("targetObject", BEAN_NAME)
+						.addPropertyValue("targetMethod", "getBean")
+						.addPropertyValue("arguments", KafkaStreamsBinderConfigurationProperties.class)
+						.getBeanDefinition();
+
+				registry.registerBeanDefinition(KafkaStreamsBinderConfigurationProperties.class.getSimpleName(), configBean);
+
+				AbstractBeanDefinition catalogueBean = BeanDefinitionBuilder.genericBeanDefinition(MethodInvokingFactoryBean.class)
+						.addPropertyReference("targetObject", BEAN_NAME)
+						.addPropertyValue("targetMethod", "getBean")
+						.addPropertyValue("arguments", KafkaStreamsBindingInformationCatalogue.class)
+						.getBeanDefinition();
+
+				registry.registerBeanDefinition(KafkaStreamsBindingInformationCatalogue.class.getSimpleName(), catalogueBean);
+			}
+		}
+	}
+
+}

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KafkaStreamsBindingInformationCatalogue.java

@@ -27,7 +27,7 @@ import org.apache.kafka.streams.kstream.KStream;
 import org.springframework.cloud.stream.binder.ConsumerProperties;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsConsumerProperties;
 import org.springframework.cloud.stream.config.BindingProperties;
-import org.springframework.kafka.core.StreamsBuilderFactoryBean;
+import org.springframework.kafka.config.StreamsBuilderFactoryBean;
 
 /**
  * A catalogue that provides binding information for Kafka Streams target types such as KStream.
@@ -43,18 +43,16 @@ class KafkaStreamsBindingInformationCatalogue {
 
 	private final Map<KStream<?, ?>, KafkaStreamsConsumerProperties> consumerProperties = new ConcurrentHashMap<>();
 
-	private final Map<Object, StreamsConfig> streamsConfigs = new ConcurrentHashMap<>();
-
 	private final Set<StreamsBuilderFactoryBean> streamsBuilderFactoryBeans = new HashSet<>();
 
 	/**
 	 * For a given bounded {@link KStream}, retrieve it's corresponding destination
 	 * on the broker.
 	 *
-	 * @param bindingTarget KStream binding target
+	 * @param bindingTarget binding target for KStream
 	 * @return destination topic on Kafka
 	 */
-	String getDestination(KStream<?,?> bindingTarget) {
+	String getDestination(KStream<?, ?> bindingTarget) {
 		BindingProperties bindingProperties = this.bindingProperties.get(bindingTarget);
 		return bindingProperties.getDestination();
 	}
@@ -62,10 +60,10 @@ class KafkaStreamsBindingInformationCatalogue {
 	/**
 	 * Is native decoding is enabled on this {@link KStream}.
 	 *
-	 * @param bindingTarget KStream binding target
+	 * @param bindingTarget binding target for KStream
 	 * @return true if native decoding is enabled, fasle otherwise.
 	 */
-	boolean isUseNativeDecoding(KStream<?,?> bindingTarget) {
+	boolean isUseNativeDecoding(KStream<?, ?> bindingTarget) {
 		BindingProperties bindingProperties = this.bindingProperties.get(bindingTarget);
 		if (bindingProperties.getConsumer() == null) {
 			bindingProperties.setConsumer(new ConsumerProperties());
@@ -74,58 +72,48 @@ class KafkaStreamsBindingInformationCatalogue {
 	}
 
 	/**
-	 * Is DLQ enabled for this {@link KStream}
+	 * Is DLQ enabled for this {@link KStream}.
 	 *
-	 * @param bindingTarget KStream binding target
+	 * @param bindingTarget binding target for KStream
 	 * @return true if DLQ is enabled, false otherwise.
 	 */
-	boolean isDlqEnabled(KStream<?,?> bindingTarget) {
-		return consumerProperties.get(bindingTarget).isEnableDlq();
+	boolean isDlqEnabled(KStream<?, ?> bindingTarget) {
+		return this.consumerProperties.get(bindingTarget).isEnableDlq();
 	}
 
 	/**
-	 * Retrieve the content type associated with a given {@link KStream}
+	 * Retrieve the content type associated with a given {@link KStream}.
 	 *
-	 * @param bindingTarget KStream binding target
+	 * @param bindingTarget binding target for KStream
 	 * @return content Type associated.
 	 */
-	String getContentType(KStream<?,?> bindingTarget) {
+	String getContentType(KStream<?, ?> bindingTarget) {
 		BindingProperties bindingProperties = this.bindingProperties.get(bindingTarget);
 		return bindingProperties.getContentType();
 	}
 
 	/**
-	 * Retrieve and return the registered {@link StreamsBuilderFactoryBean} for the given KStream
+	 * Register a cache for bounded KStream -> {@link BindingProperties}.
 	 *
-	 * @param bindingTarget KStream binding target
-	 * @return corresponding {@link StreamsBuilderFactoryBean}
-	 */
-	StreamsConfig getStreamsConfig(Object bindingTarget) {
-		return streamsConfigs.get(bindingTarget);
-	}
-
-	/**
-	 * Register a cache for bounded KStream -> {@link BindingProperties}
-	 *
-	 * @param bindingTarget KStream binding target
+	 * @param bindingTarget binding target for KStream
 	 * @param bindingProperties {@link BindingProperties} for this KStream
 	 */
-	void registerBindingProperties(KStream<?,?> bindingTarget, BindingProperties bindingProperties) {
+	void registerBindingProperties(KStream<?, ?> bindingTarget, BindingProperties bindingProperties) {
 		this.bindingProperties.put(bindingTarget, bindingProperties);
 	}
 
 	/**
-	 * Register a cache for bounded KStream -> {@link KafkaStreamsConsumerProperties}
+	 * Register a cache for bounded KStream -> {@link KafkaStreamsConsumerProperties}.
 	 *
-	 * @param bindingTarget KStream binding target
-	 * @param kafkaStreamsConsumerProperties Consumer properties for this KStream
+	 * @param bindingTarget binding target for KStream
+	 * @param kafkaStreamsConsumerProperties consumer properties for this KStream
 	 */
-	void registerConsumerProperties(KStream<?,?> bindingTarget, KafkaStreamsConsumerProperties kafkaStreamsConsumerProperties) {
+	void registerConsumerProperties(KStream<?, ?> bindingTarget, KafkaStreamsConsumerProperties kafkaStreamsConsumerProperties) {
 		this.consumerProperties.put(bindingTarget, kafkaStreamsConsumerProperties);
 	}
 
 	/**
-	 * Adds a mapping for KStream -> {@link StreamsBuilderFactoryBean}
+	 * Adds a mapping for KStream -> {@link StreamsBuilderFactoryBean}.
 	 *
 	 * @param streamsBuilderFactoryBean provides the {@link StreamsBuilderFactoryBean} mapped to the KStream
 	 */
@@ -133,11 +121,7 @@ class KafkaStreamsBindingInformationCatalogue {
 		this.streamsBuilderFactoryBeans.add(streamsBuilderFactoryBean);
 	}
 
-	void addStreamsConfigs(Object bindingTarget, StreamsConfig streamsConfig) {
-		this.streamsConfigs.put(bindingTarget, streamsConfig);
-	}
-
 	Set<StreamsBuilderFactoryBean> getStreamsBuilderFactoryBeans() {
-		return streamsBuilderFactoryBeans;
+		return this.streamsBuilderFactoryBeans;
 	}
 }

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KafkaStreamsDlqDispatch.java

@@ -16,11 +16,6 @@
 
 package org.springframework.cloud.stream.binder.kafka.streams;
 
-/**
- * @author Soby Chacko
- * @author Rafal Zukowski
- * @author Gary Russell
- */
 import java.util.HashMap;
 import java.util.Map;
 
@@ -42,18 +37,25 @@ import org.springframework.util.ObjectUtils;
 import org.springframework.util.concurrent.ListenableFuture;
 import org.springframework.util.concurrent.ListenableFutureCallback;
 
+/**
+ * Send records in error to a DLQ.
+ *
+ * @author Soby Chacko
+ * @author Rafal Zukowski
+ * @author Gary Russell
+ */
 class KafkaStreamsDlqDispatch {
 
 	private final Log logger = LogFactory.getLog(getClass());
 
-	private final KafkaTemplate<byte[],byte[]> kafkaTemplate;
+	private final KafkaTemplate<byte[], byte[]> kafkaTemplate;
 
 	private final String dlqName;
 
 	KafkaStreamsDlqDispatch(String dlqName,
 							KafkaBinderConfigurationProperties kafkaBinderConfigurationProperties,
 							KafkaConsumerProperties kafkaConsumerProperties) {
-		ProducerFactory<byte[],byte[]> producerFactory = getProducerFactory(
+		ProducerFactory<byte[], byte[]> producerFactory = getProducerFactory(
 				new ExtendedProducerProperties<>(kafkaConsumerProperties.getDlqProducerProperties()),
 				kafkaBinderConfigurationProperties);
 
@@ -63,7 +65,7 @@ class KafkaStreamsDlqDispatch {
 
 	@SuppressWarnings("unchecked")
 	public void sendToDlq(byte[] key, byte[] value, int partittion) {
-		ProducerRecord<byte[],byte[]> producerRecord = new ProducerRecord<>(this.dlqName, partittion,
+		ProducerRecord<byte[], byte[]> producerRecord = new ProducerRecord<>(this.dlqName, partittion,
 				key, value, null);
 
 		StringBuilder sb = new StringBuilder().append(" a message with key='")
@@ -72,10 +74,10 @@ class KafkaStreamsDlqDispatch {
 				.append(toDisplayString(ObjectUtils.nullSafeToString(value)))
 				.append("'").append(" received from ")
 				.append(partittion);
-		ListenableFuture<SendResult<byte[],byte[]>> sentDlq = null;
+		ListenableFuture<SendResult<byte[], byte[]>> sentDlq = null;
 		try {
 			sentDlq = this.kafkaTemplate.send(producerRecord);
-			sentDlq.addCallback(new ListenableFutureCallback<SendResult<byte[],byte[]>>() {
+			sentDlq.addCallback(new ListenableFutureCallback<SendResult<byte[], byte[]>>() {
 
 				@Override
 				public void onFailure(Throwable ex) {
@@ -84,7 +86,7 @@ class KafkaStreamsDlqDispatch {
 				}
 
 				@Override
-				public void onSuccess(SendResult<byte[],byte[]> result) {
+				public void onSuccess(SendResult<byte[], byte[]> result) {
 					if (KafkaStreamsDlqDispatch.this.logger.isDebugEnabled()) {
 						KafkaStreamsDlqDispatch.this.logger.debug(
 								"Sent to DLQ " + sb.toString());
@@ -100,7 +102,7 @@ class KafkaStreamsDlqDispatch {
 		}
 	}
 
-	private DefaultKafkaProducerFactory<byte[],byte[]> getProducerFactory(ExtendedProducerProperties<KafkaProducerProperties> producerProperties,
+	private DefaultKafkaProducerFactory<byte[], byte[]> getProducerFactory(ExtendedProducerProperties<KafkaProducerProperties> producerProperties,
 																		KafkaBinderConfigurationProperties configurationProperties) {
 		Map<String, Object> props = new HashMap<>();
 		props.put(ProducerConfig.RETRIES_CONFIG, 0);

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KafkaStreamsMessageConversionDelegate.java

@@ -19,6 +19,10 @@ package org.springframework.cloud.stream.binder.kafka.streams;
 import java.util.HashMap;
 import java.util.Map;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.kafka.common.header.Header;
+import org.apache.kafka.common.header.Headers;
 import org.apache.kafka.streams.KeyValue;
 import org.apache.kafka.streams.kstream.KStream;
 import org.apache.kafka.streams.processor.Processor;
@@ -30,6 +34,7 @@ import org.springframework.messaging.Message;
 import org.springframework.messaging.MessageHeaders;
 import org.springframework.messaging.converter.MessageConverter;
 import org.springframework.messaging.support.MessageBuilder;
+import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 
 /**
@@ -43,6 +48,8 @@ import org.springframework.util.StringUtils;
  */
 public class KafkaStreamsMessageConversionDelegate {
 
+	private static final Log LOG = LogFactory.getLog(KafkaStreamsMessageConversionDelegate.class);
+
 	private static final ThreadLocal<KeyValue<Object, Object>> keyValueThreadLocal = new ThreadLocal<>();
 
 	private final CompositeMessageConverterFactory compositeMessageConverterFactory;
@@ -69,9 +76,10 @@ public class KafkaStreamsMessageConversionDelegate {
 	 * @param outboundBindTarget outbound KStream target
 	 * @return serialized KStream
 	 */
-	public KStream serializeOnOutbound(KStream<?,?> outboundBindTarget) {
+	@SuppressWarnings("rawtypes")
+	public KStream serializeOnOutbound(KStream<?, ?> outboundBindTarget) {
 		String contentType = this.kstreamBindingInformationCatalogue.getContentType(outboundBindTarget);
-		MessageConverter messageConverter = compositeMessageConverterFactory.getMessageConverterForAllRegistered();
+		MessageConverter messageConverter = this.compositeMessageConverterFactory.getMessageConverterForAllRegistered();
 
 		return outboundBindTarget.mapValues((v) -> {
 			Message<?> message = v instanceof Message<?> ? (Message<?>) v :
@@ -81,22 +89,25 @@ public class KafkaStreamsMessageConversionDelegate {
 				headers.put(MessageHeaders.CONTENT_TYPE, contentType);
 			}
 			MessageHeaders messageHeaders = new MessageHeaders(headers);
-			return 
+			return
 					messageConverter.toMessage(message.getPayload(),
 							messageHeaders).getPayload();
 		});
 	}
 
 	/**
-	 * Deserialize incoming {@link KStream} based on contentType.
+	 * Deserialize incoming {@link KStream} based on content type.
 	 *
 	 * @param valueClass on KStream value
 	 * @param bindingTarget inbound KStream target
 	 * @return deserialized KStream
 	 */
-	@SuppressWarnings("unchecked")
+	@SuppressWarnings({ "unchecked", "rawtypes" })
 	public KStream deserializeOnInbound(Class<?> valueClass, KStream<?, ?> bindingTarget) {
-		MessageConverter messageConverter = compositeMessageConverterFactory.getMessageConverterForAllRegistered();
+		MessageConverter messageConverter = this.compositeMessageConverterFactory.getMessageConverterForAllRegistered();
+		final PerRecordContentTypeHolder perRecordContentTypeHolder = new PerRecordContentTypeHolder();
+
+		resolvePerRecordContentType(bindingTarget, perRecordContentTypeHolder);
 
 		//Deserialize using a branching strategy
 		KStream<?, ?>[] branch = bindingTarget.branch(
@@ -105,32 +116,36 @@ public class KafkaStreamsMessageConversionDelegate {
 				boolean isValidRecord = false;
 
 				try {
-					if (valueClass.isAssignableFrom(o2.getClass())) {
-						keyValueThreadLocal.set(new KeyValue<>(o, o2));
-					}
-					else if (o2 instanceof Message) {
-						if (valueClass.isAssignableFrom(((Message) o2).getPayload().getClass())) {
-							keyValueThreadLocal.set(new KeyValue<>(o, ((Message) o2).getPayload()));
+					//if the record is a tombstone, ignore and exit from processing further.
+					if (o2 != null) {
+						if (o2 instanceof Message || o2 instanceof String || o2 instanceof byte[]) {
+							Message<?> m1 = null;
+							if (o2 instanceof Message) {
+								m1 = perRecordContentTypeHolder.contentType != null
+										? MessageBuilder.fromMessage((Message<?>) o2).setHeader(MessageHeaders.CONTENT_TYPE,
+										perRecordContentTypeHolder.contentType).build() : (Message<?>) o2;
+							}
+							else {
+								m1 = perRecordContentTypeHolder.contentType != null ? MessageBuilder.withPayload(o2)
+										.setHeader(MessageHeaders.CONTENT_TYPE, perRecordContentTypeHolder.contentType).build() : MessageBuilder.withPayload(o2).build();
+							}
+							convertAndSetMessage(o, valueClass, messageConverter, m1);
 						}
 						else {
-							convertAndSetMessage(o, valueClass, messageConverter, (Message) o2);
+							keyValueThreadLocal.set(new KeyValue<>(o, o2));
 						}
-					}
-					else if (o2 instanceof String || o2 instanceof byte[]) {
-						Message<?> message = MessageBuilder.withPayload(o2).build();
-						convertAndSetMessage(o, valueClass, messageConverter, message);
+						isValidRecord = true;
 					}
 					else {
-						keyValueThreadLocal.set(new KeyValue<>(o, o2));
+						LOG.info("Received a tombstone record. This will be skipped from further processing.");
 					}
-					isValidRecord = true;
 				}
 				catch (Exception ignored) {
 					//pass through
 				}
 				return isValidRecord;
 			},
-			//sedond filter that catches any messages for which an exception thrown in the first filter above.
+			//second filter that catches any messages for which an exception thrown in the first filter above.
 			(k, v) -> true
 		);
 		//process errors from the second filter in the branch above.
@@ -144,15 +159,46 @@ public class KafkaStreamsMessageConversionDelegate {
 		});
 	}
 
-	private void convertAndSetMessage(Object o, Class<?> valueClass, MessageConverter messageConverter, Message<?> msg) {
-		Object messageConverted = messageConverter.fromMessage(msg, valueClass);
-		if (messageConverted == null) {
-			throw new IllegalStateException("Inbound data conversion failed.");
-		}
-		keyValueThreadLocal.set(new KeyValue<>(o, messageConverted));
+	@SuppressWarnings({ "unchecked", "rawtypes" })
+	private void resolvePerRecordContentType(KStream<?, ?> outboundBindTarget, PerRecordContentTypeHolder perRecordContentTypeHolder) {
+		outboundBindTarget.process(() -> new Processor() {
+
+			ProcessorContext context;
+
+			@Override
+			public void init(ProcessorContext context) {
+				this.context = context;
+			}
+
+			@Override
+			public void process(Object key, Object value) {
+				final Headers headers = this.context.headers();
+				final Iterable<Header> contentTypes = headers.headers(MessageHeaders.CONTENT_TYPE);
+				if (contentTypes != null && contentTypes.iterator().hasNext()) {
+					final String contentType = new String(contentTypes.iterator().next().value());
+					//remove leading and trailing quotes
+					final String cleanContentType = StringUtils.replace(contentType, "\"", "");
+					perRecordContentTypeHolder.setContentType(cleanContentType);
+				}
+			}
+
+			@Override
+			public void close() {
+
+			}
+		});
 	}
 
-	@SuppressWarnings("unchecked")
+	private void convertAndSetMessage(Object o, Class<?> valueClass, MessageConverter messageConverter, Message<?> msg) {
+		Object result = valueClass.isAssignableFrom(msg.getPayload().getClass())
+				? msg.getPayload() : messageConverter.fromMessage(msg, valueClass);
+
+		Assert.notNull(result, "Failed to convert message " + msg);
+
+		keyValueThreadLocal.set(new KeyValue<>(o, result));
+	}
+
+	@SuppressWarnings({ "unchecked", "rawtypes" })
 	private void processErrorFromDeserialization(KStream<?, ?> bindingTarget, KStream<?, ?> branch) {
 		branch.process(() -> new Processor() {
 			ProcessorContext context;
@@ -164,21 +210,25 @@ public class KafkaStreamsMessageConversionDelegate {
 
 			@Override
 			public void process(Object o, Object o2) {
-				if (kstreamBindingInformationCatalogue.isDlqEnabled(bindingTarget)) {
-					String destination = context.topic();
-					if (o2 instanceof Message) {
-						Message message = (Message) o2;
-						sendToDlqAndContinue.sendToDlq(destination, (byte[]) o, (byte[]) message.getPayload(), context.partition());
+				//Only continue if the record was not a tombstone.
+				if (o2 != null) {
+					if (KafkaStreamsMessageConversionDelegate.this.kstreamBindingInformationCatalogue.isDlqEnabled(bindingTarget)) {
+						String destination = this.context.topic();
+						if (o2 instanceof Message) {
+							Message message = (Message) o2;
+							KafkaStreamsMessageConversionDelegate.this.sendToDlqAndContinue.sendToDlq(destination, (byte[]) o, (byte[]) message.getPayload(), this.context.partition());
+						}
+						else {
+							KafkaStreamsMessageConversionDelegate.this.sendToDlqAndContinue.sendToDlq(destination, (byte[]) o, (byte[]) o2, this.context.partition());
+						}
 					}
-					else {
-						sendToDlqAndContinue.sendToDlq(destination, (byte[]) o, (byte[]) o2, context.partition());
+					else if (KafkaStreamsMessageConversionDelegate.this.kstreamBinderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.logAndFail) {
+						throw new IllegalStateException("Inbound deserialization failed. Stopping further processing of records.");
+					}
+					else if (KafkaStreamsMessageConversionDelegate.this.kstreamBinderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.logAndContinue) {
+						//quietly passing through. No action needed, this is similar to log and continue.
+						LOG.error("Inbound deserialization failed. Skipping this record and continuing.");
 					}
-				}
-				else if (kstreamBinderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.logAndFail) {
-					throw new IllegalStateException("Inbound deserialization failed.");
-				}
-				else if (kstreamBinderConfigurationProperties.getSerdeError() == KafkaStreamsBinderConfigurationProperties.SerdeError.logAndContinue) {
-					//quietly pass through. No action needed, this is similar to log and continue.
 				}
 			}
 
@@ -188,4 +238,13 @@ public class KafkaStreamsMessageConversionDelegate {
 			}
 		});
 	}
+
+	private static class PerRecordContentTypeHolder {
+
+		String contentType;
+
+		void setContentType(String contentType) {
+			this.contentType = contentType;
+		}
+	}
 }

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KafkaStreamsRegistry.java

@@ -32,7 +32,7 @@ class KafkaStreamsRegistry {
 	private final Set<KafkaStreams> kafkaStreams = new HashSet<>();
 
 	Set<KafkaStreams> getKafkaStreams() {
-		return kafkaStreams;
+		return this.kafkaStreams;
 	}
 
 	/**

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KafkaStreamsStreamListenerSetupMethodOrchestrator.java

@@ -21,6 +21,7 @@ import java.util.Arrays;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Properties;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -28,8 +29,9 @@ import org.apache.kafka.common.serialization.Serde;
 import org.apache.kafka.common.utils.Bytes;
 import org.apache.kafka.streams.StreamsBuilder;
 import org.apache.kafka.streams.StreamsConfig;
-import org.apache.kafka.streams.errors.DeserializationExceptionHandler;
+import org.apache.kafka.streams.Topology;
 import org.apache.kafka.streams.kstream.Consumed;
+import org.apache.kafka.streams.kstream.GlobalKTable;
 import org.apache.kafka.streams.kstream.KStream;
 import org.apache.kafka.streams.kstream.KTable;
 import org.apache.kafka.streams.kstream.Materialized;
@@ -46,8 +48,8 @@ import org.springframework.beans.factory.support.BeanDefinitionRegistry;
 import org.springframework.cloud.stream.annotation.Input;
 import org.springframework.cloud.stream.annotation.StreamListener;
 import org.springframework.cloud.stream.binder.ConsumerProperties;
+import org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties;
 import org.springframework.cloud.stream.binder.kafka.streams.annotations.KafkaStreamsStateStore;
-import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsBinderConfigurationProperties;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsConsumerProperties;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsExtendedBindingProperties;
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsStateStoreProperties;
@@ -62,9 +64,9 @@ import org.springframework.context.ApplicationContextAware;
 import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.core.MethodParameter;
 import org.springframework.core.annotation.AnnotationUtils;
+import org.springframework.kafka.config.KafkaStreamsConfiguration;
+import org.springframework.kafka.config.StreamsBuilderFactoryBean;
 import org.springframework.kafka.core.CleanupConfig;
-import org.springframework.kafka.core.StreamsBuilderFactoryBean;
-import org.springframework.messaging.Message;
 import org.springframework.messaging.MessageHeaders;
 import org.springframework.messaging.handler.annotation.SendTo;
 import org.springframework.messaging.support.MessageBuilder;
@@ -80,7 +82,7 @@ import org.springframework.util.StringUtils;
  * The orchestration primarily focus on the following areas:
  *
  * 1. Allow multiple KStream output bindings (KStream branching) by allowing more than one output values on {@link SendTo}
- * 2. Allow multiple inbound bindings for multiple KStream and or KTable types.
+ * 2. Allow multiple inbound bindings for multiple KStream and or KTable/GlobalKTable types.
  * 3. Each StreamListener method that it orchestrates gets its own {@link StreamsBuilderFactoryBean} and {@link StreamsConfig}
  *
  * @author Soby Chacko
@@ -89,7 +91,7 @@ import org.springframework.util.StringUtils;
  */
 class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListenerSetupMethodOrchestrator, ApplicationContextAware {
 
-	private final static Log LOG = LogFactory.getLog(KafkaStreamsStreamListenerSetupMethodOrchestrator.class);
+	private static final Log LOG = LogFactory.getLog(KafkaStreamsStreamListenerSetupMethodOrchestrator.class);
 
 	private final StreamListenerParameterAdapter streamListenerParameterAdapter;
 
@@ -105,27 +107,23 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 
 	private final Map<Method, StreamsBuilderFactoryBean> methodStreamsBuilderFactoryBeanMap = new HashMap<>();
 
-	private final KafkaStreamsBinderConfigurationProperties binderConfigurationProperties;
-
 	private final CleanupConfig cleanupConfig;
 
 	private ConfigurableApplicationContext applicationContext;
 
 	KafkaStreamsStreamListenerSetupMethodOrchestrator(BindingServiceProperties bindingServiceProperties,
-														KafkaStreamsExtendedBindingProperties kafkaStreamsExtendedBindingProperties,
-														KeyValueSerdeResolver keyValueSerdeResolver,
-														KafkaStreamsBindingInformationCatalogue kafkaStreamsBindingInformationCatalogue,
-														StreamListenerParameterAdapter streamListenerParameterAdapter,
-														Collection<StreamListenerResultAdapter> streamListenerResultAdapters,
-														KafkaStreamsBinderConfigurationProperties binderConfigurationProperties,
-														CleanupConfig cleanupConfig) {
+													KafkaStreamsExtendedBindingProperties kafkaStreamsExtendedBindingProperties,
+													KeyValueSerdeResolver keyValueSerdeResolver,
+													KafkaStreamsBindingInformationCatalogue kafkaStreamsBindingInformationCatalogue,
+													StreamListenerParameterAdapter streamListenerParameterAdapter,
+													Collection<StreamListenerResultAdapter> streamListenerResultAdapters,
+													CleanupConfig cleanupConfig) {
 		this.bindingServiceProperties = bindingServiceProperties;
 		this.kafkaStreamsExtendedBindingProperties = kafkaStreamsExtendedBindingProperties;
 		this.keyValueSerdeResolver = keyValueSerdeResolver;
 		this.kafkaStreamsBindingInformationCatalogue = kafkaStreamsBindingInformationCatalogue;
 		this.streamListenerParameterAdapter = streamListenerParameterAdapter;
 		this.streamListenerResultAdapters = streamListenerResultAdapters;
-		this.binderConfigurationProperties = binderConfigurationProperties;
 		this.cleanupConfig = cleanupConfig;
 	}
 
@@ -149,7 +147,8 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 		for (int i = 0; i < method.getParameterCount(); i++) {
 			MethodParameter methodParameter = MethodParameter.forExecutable(method, i);
 			Class<?> parameterType = methodParameter.getParameterType();
-			if (parameterType.equals(KStream.class) || parameterType.equals(KTable.class)) {
+			if (parameterType.equals(KStream.class) || parameterType.equals(KTable.class)
+					|| parameterType.equals(GlobalKTable.class)) {
 				supports = true;
 			}
 		}
@@ -176,7 +175,8 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 				if (result.getClass().isArray()) {
 					Assert.isTrue(methodAnnotatedOutboundNames.length == ((Object[]) result).length,
 							"Result does not match with the number of declared outbounds");
-				} else {
+				}
+				else {
 					Assert.isTrue(methodAnnotatedOutboundNames.length == 1,
 							"Result does not match with the number of declared outbounds");
 				}
@@ -185,16 +185,17 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 					int i = 0;
 					for (Object outboundKStream : outboundKStreams) {
 						Object targetBean = this.applicationContext.getBean(methodAnnotatedOutboundNames[i++]);
-						for (StreamListenerResultAdapter streamListenerResultAdapter : streamListenerResultAdapters) {
+						for (StreamListenerResultAdapter streamListenerResultAdapter : this.streamListenerResultAdapters) {
 							if (streamListenerResultAdapter.supports(outboundKStream.getClass(), targetBean.getClass())) {
 								streamListenerResultAdapter.adapt(outboundKStream, targetBean);
 								break;
 							}
 						}
 					}
-				} else {
+				}
+				else {
 					Object targetBean = this.applicationContext.getBean(methodAnnotatedOutboundNames[0]);
-					for (StreamListenerResultAdapter streamListenerResultAdapter : streamListenerResultAdapters) {
+					for (StreamListenerResultAdapter streamListenerResultAdapter : this.streamListenerResultAdapters) {
 						if (streamListenerResultAdapter.supports(result.getClass(), targetBean.getClass())) {
 							streamListenerResultAdapter.adapt(result, targetBean);
 							break;
@@ -203,8 +204,8 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 				}
 			}
 		}
-		catch (Exception e) {
-			throw new BeanInitializationException("Cannot setup StreamListener for " + method, e);
+		catch (Exception ex) {
+			throw new BeanInitializationException("Cannot setup StreamListener for " + method, ex);
 		}
 	}
 
@@ -229,31 +230,45 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 			if (targetReferenceValue != null) {
 				Assert.isInstanceOf(String.class, targetReferenceValue, "Annotation value must be a String");
 				Object targetBean = applicationContext.getBean((String) targetReferenceValue);
-				BindingProperties bindingProperties = bindingServiceProperties.getBindingProperties(inboundName);
+				BindingProperties bindingProperties = this.bindingServiceProperties.getBindingProperties(inboundName);
 				enableNativeDecodingForKTableAlways(parameterType, bindingProperties);
-				StreamsConfig streamsConfig = null;
 				//Retrieve the StreamsConfig created for this method if available.
 				//Otherwise, create the StreamsBuilderFactory and get the underlying config.
-				if (!methodStreamsBuilderFactoryBeanMap.containsKey(method)) {
-					streamsConfig = buildStreamsBuilderAndRetrieveConfig(method, applicationContext, bindingProperties);
+				if (!this.methodStreamsBuilderFactoryBeanMap.containsKey(method)) {
+					buildStreamsBuilderAndRetrieveConfig(method, applicationContext, inboundName);
 				}
 				try {
-					StreamsBuilderFactoryBean streamsBuilderFactoryBean = methodStreamsBuilderFactoryBeanMap.get(method);
+					StreamsBuilderFactoryBean streamsBuilderFactoryBean = this.methodStreamsBuilderFactoryBeanMap.get(method);
 					StreamsBuilder streamsBuilder = streamsBuilderFactoryBean.getObject();
-					KafkaStreamsConsumerProperties extendedConsumerProperties = kafkaStreamsExtendedBindingProperties.getExtendedConsumerProperties(inboundName);
+					KafkaStreamsConsumerProperties extendedConsumerProperties = this.kafkaStreamsExtendedBindingProperties.getExtendedConsumerProperties(inboundName);
 					//get state store spec
 					KafkaStreamsStateStoreProperties spec = buildStateStoreSpec(method);
 					Serde<?> keySerde = this.keyValueSerdeResolver.getInboundKeySerde(extendedConsumerProperties);
 					Serde<?> valueSerde = this.keyValueSerdeResolver.getInboundValueSerde(bindingProperties.getConsumer(), extendedConsumerProperties);
+
+					final KafkaConsumerProperties.StartOffset startOffset = extendedConsumerProperties.getStartOffset();
+					Topology.AutoOffsetReset autoOffsetReset = null;
+					if (startOffset != null) {
+						switch (startOffset) {
+							case earliest : autoOffsetReset = Topology.AutoOffsetReset.EARLIEST;
+								break;
+							case latest : autoOffsetReset = Topology.AutoOffsetReset.LATEST;
+								break;
+							default: break;
+						}
+					}
+					if (extendedConsumerProperties.isResetOffsets()) {
+						LOG.warn("Detected resetOffsets configured on binding " + inboundName + ". "
+								+ "Setting resetOffsets in Kafka Streams binder does not have any effect.");
+					}
+
 					if (parameterType.isAssignableFrom(KStream.class)) {
-						KStream<?, ?> stream = getkStream(inboundName, spec, bindingProperties, streamsBuilder, keySerde, valueSerde);
+						KStream<?, ?> stream = getkStream(inboundName, spec, bindingProperties,
+												streamsBuilder, keySerde, valueSerde, autoOffsetReset);
 						KStreamBoundElementFactory.KStreamWrapper kStreamWrapper = (KStreamBoundElementFactory.KStreamWrapper) targetBean;
 						//wrap the proxy created during the initial target type binding with real object (KStream)
 						kStreamWrapper.wrap((KStream<Object, Object>) stream);
-						kafkaStreamsBindingInformationCatalogue.addStreamBuilderFactory(streamsBuilderFactoryBean);
-						if (streamsConfig != null){
-							kafkaStreamsBindingInformationCatalogue.addStreamsConfigs(kStreamWrapper, streamsConfig);
-						}
+						this.kafkaStreamsBindingInformationCatalogue.addStreamBuilderFactory(streamsBuilderFactoryBean);
 						for (StreamListenerParameterAdapter streamListenerParameterAdapter : streamListenerParameterAdapters) {
 							if (streamListenerParameterAdapter.supports(stream.getClass(), methodParameter)) {
 								arguments[parameterIndex] = streamListenerParameterAdapter.adapt(kStreamWrapper, methodParameter);
@@ -268,23 +283,29 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 					}
 					else if (parameterType.isAssignableFrom(KTable.class)) {
 						String materializedAs = extendedConsumerProperties.getMaterializedAs();
-						String bindingDestination = bindingServiceProperties.getBindingDestination(inboundName);
-						KTable<?, ?> table = materializedAs != null ?
-								materializedAs(streamsBuilder, bindingDestination, materializedAs, keySerde, valueSerde ) :
-								streamsBuilder.table(bindingDestination,
-										Consumed.with(keySerde, valueSerde));
+						String bindingDestination = this.bindingServiceProperties.getBindingDestination(inboundName);
+						KTable<?, ?> table = getKTable(streamsBuilder, keySerde, valueSerde, materializedAs,
+								bindingDestination, autoOffsetReset);
 						KTableBoundElementFactory.KTableWrapper kTableWrapper = (KTableBoundElementFactory.KTableWrapper) targetBean;
 						//wrap the proxy created during the initial target type binding with real object (KTable)
 						kTableWrapper.wrap((KTable<Object, Object>) table);
-						kafkaStreamsBindingInformationCatalogue.addStreamBuilderFactory(streamsBuilderFactoryBean);
-						if (streamsConfig != null){
-							kafkaStreamsBindingInformationCatalogue.addStreamsConfigs(kTableWrapper, streamsConfig);
-						}
+						this.kafkaStreamsBindingInformationCatalogue.addStreamBuilderFactory(streamsBuilderFactoryBean);
+						arguments[parameterIndex] = table;
+					}
+					else if (parameterType.isAssignableFrom(GlobalKTable.class)) {
+						String materializedAs = extendedConsumerProperties.getMaterializedAs();
+						String bindingDestination = this.bindingServiceProperties.getBindingDestination(inboundName);
+						GlobalKTable<?, ?> table = getGlobalKTable(streamsBuilder, keySerde, valueSerde, materializedAs,
+								bindingDestination, autoOffsetReset);
+						GlobalKTableBoundElementFactory.GlobalKTableWrapper globalKTableWrapper = (GlobalKTableBoundElementFactory.GlobalKTableWrapper) targetBean;
+						//wrap the proxy created during the initial target type binding with real object (KTable)
+						globalKTableWrapper.wrap((GlobalKTable<Object, Object>) table);
+						this.kafkaStreamsBindingInformationCatalogue.addStreamBuilderFactory(streamsBuilderFactoryBean);
 						arguments[parameterIndex] = table;
 					}
 				}
-				catch (Exception e) {
-					throw new IllegalStateException(e);
+				catch (Exception ex) {
+					throw new IllegalStateException(ex);
 				}
 			}
 			else {
@@ -294,12 +315,40 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 		return arguments;
 	}
 
-	private <K,V> KTable<K,V> materializedAs(StreamsBuilder streamsBuilder, String destination, String storeName, Serde<K> k, Serde<V> v) {
-			
-		return streamsBuilder.table(bindingServiceProperties.getBindingDestination(destination),
-				Materialized.<K, V, KeyValueStore<Bytes, byte[]>>as(storeName)
-						.withKeySerde(k)
-						.withValueSerde(v));
+	private GlobalKTable<?, ?> getGlobalKTable(StreamsBuilder streamsBuilder, Serde<?> keySerde, Serde<?> valueSerde, String materializedAs,
+											String bindingDestination, Topology.AutoOffsetReset autoOffsetReset) {
+		return materializedAs != null ?
+				materializedAsGlobalKTable(streamsBuilder, bindingDestination, materializedAs, keySerde, valueSerde, autoOffsetReset) :
+				streamsBuilder.globalTable(bindingDestination,
+						Consumed.with(keySerde, valueSerde).withOffsetResetPolicy(autoOffsetReset));
+	}
+
+	private KTable<?, ?> getKTable(StreamsBuilder streamsBuilder, Serde<?> keySerde, Serde<?> valueSerde, String materializedAs,
+								String bindingDestination, Topology.AutoOffsetReset autoOffsetReset) {
+		return materializedAs != null ?
+				materializedAs(streamsBuilder, bindingDestination, materializedAs, keySerde, valueSerde, autoOffsetReset) :
+				streamsBuilder.table(bindingDestination,
+						Consumed.with(keySerde, valueSerde).withOffsetResetPolicy(autoOffsetReset));
+	}
+
+	private <K, V> KTable<K, V> materializedAs(StreamsBuilder streamsBuilder, String destination, String storeName, Serde<K> k, Serde<V> v,
+											Topology.AutoOffsetReset autoOffsetReset) {
+		return streamsBuilder.table(this.bindingServiceProperties.getBindingDestination(destination),
+				Consumed.with(k, v).withOffsetResetPolicy(autoOffsetReset),
+				getMaterialized(storeName, k, v));
+	}
+
+	private <K, V> GlobalKTable<K, V> materializedAsGlobalKTable(StreamsBuilder streamsBuilder, String destination, String storeName, Serde<K> k, Serde<V> v,
+															Topology.AutoOffsetReset autoOffsetReset) {
+		return streamsBuilder.globalTable(this.bindingServiceProperties.getBindingDestination(destination),
+				Consumed.with(k, v).withOffsetResetPolicy(autoOffsetReset),
+				getMaterialized(storeName, k, v));
+	}
+
+	private <K, V> Materialized<K, V, KeyValueStore<Bytes, byte[]>> getMaterialized(String storeName, Serde<K> k, Serde<V> v) {
+		return Materialized.<K, V, KeyValueStore<Bytes, byte[]>>as(storeName)
+				.withKeySerde(k)
+				.withValueSerde(v);
 	}
 
 	private StoreBuilder buildStateStore(KafkaStreamsStateStoreProperties spec) {
@@ -328,19 +377,18 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 			if (spec.isLoggingDisabled()) {
 				builder = builder.withLoggingDisabled();
 			}
-
 			return builder;
-
-		}catch (Exception e) {
-			LOG.error("failed to build state store exception : " + e);
-			throw e;
+		}
+		catch (Exception ex) {
+			LOG.error("failed to build state store exception : " + ex);
+			throw ex;
 		}
 	}
 
-
 	private KStream<?, ?> getkStream(String inboundName, KafkaStreamsStateStoreProperties storeSpec,
-									BindingProperties bindingProperties, StreamsBuilder streamsBuilder,
-									Serde<?> keySerde, Serde<?> valueSerde) {
+									BindingProperties bindingProperties,
+									StreamsBuilder streamsBuilder,
+									Serde<?> keySerde, Serde<?> valueSerde, Topology.AutoOffsetReset autoOffsetReset) {
 		if (storeSpec != null) {
 			StoreBuilder storeBuilder = buildStateStore(storeSpec);
 			streamsBuilder.addStateStore(storeBuilder);
@@ -349,25 +397,28 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 			}
 		}
 		String[] bindingTargets = StringUtils
-				.commaDelimitedListToStringArray(bindingServiceProperties.getBindingDestination(inboundName));
-		KStream<?, ?> stream = streamsBuilder.stream(Arrays.asList(bindingTargets),
-				Consumed.with(keySerde, valueSerde));
-		final boolean nativeDecoding = bindingServiceProperties.getConsumerProperties(inboundName).isUseNativeDecoding();
-		if (nativeDecoding){
+				.commaDelimitedListToStringArray(this.bindingServiceProperties.getBindingDestination(inboundName));
+
+		KStream<?, ?> stream =
+					streamsBuilder.stream(Arrays.asList(bindingTargets),
+									Consumed.with(keySerde, valueSerde)
+											.withOffsetResetPolicy(autoOffsetReset));
+		final boolean nativeDecoding = this.bindingServiceProperties.getConsumerProperties(inboundName).isUseNativeDecoding();
+		if (nativeDecoding) {
 			LOG.info("Native decoding is enabled for " + inboundName + ". Inbound deserialization done at the broker.");
 		}
 		else {
 			LOG.info("Native decoding is disabled for " + inboundName + ". Inbound message conversion done by Spring Cloud Stream.");
 		}
 
-		stream = stream.mapValues(value -> {
+		stream = stream.mapValues((value) -> {
 			Object returnValue;
 			String contentType = bindingProperties.getContentType();
-			if (!StringUtils.isEmpty(contentType) && !nativeDecoding) {
-				Message<?> message = MessageBuilder.withPayload(value)
+			if (value != null && !StringUtils.isEmpty(contentType) && !nativeDecoding) {
+				returnValue = MessageBuilder.withPayload(value)
 						.setHeader(MessageHeaders.CONTENT_TYPE, contentType).build();
-						returnValue = message;
-			} else {
+			}
+			else {
 				returnValue = value;
 			}
 			return returnValue;
@@ -376,61 +427,58 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 	}
 
 	private void enableNativeDecodingForKTableAlways(Class<?> parameterType, BindingProperties bindingProperties) {
-		if (parameterType.isAssignableFrom(KTable.class)) {
+		if (parameterType.isAssignableFrom(KTable.class) || parameterType.isAssignableFrom(GlobalKTable.class)) {
 			if (bindingProperties.getConsumer() == null) {
 				bindingProperties.setConsumer(new ConsumerProperties());
 			}
-			//No framework level message conversion provided for KTable, its done by the broker.
+			//No framework level message conversion provided for KTable/GlobalKTable, its done by the broker.
 			bindingProperties.getConsumer().setUseNativeDecoding(true);
 		}
 	}
 
 	@SuppressWarnings({"unchecked"})
-	private StreamsConfig buildStreamsBuilderAndRetrieveConfig(Method method, ApplicationContext applicationContext,
-															BindingProperties bindingProperties) {
+	private void buildStreamsBuilderAndRetrieveConfig(Method method, ApplicationContext applicationContext,
+															String inboundName) {
 		ConfigurableListableBeanFactory beanFactory = this.applicationContext.getBeanFactory();
-		String group = bindingProperties.getGroup();
-		if (!StringUtils.hasText(group)) {
-			group = binderConfigurationProperties.getApplicationId();
-		}
-		Map<String, Object> streamConfigGlobalProperties = applicationContext.getBean("streamConfigGlobalProperties", Map.class);
-		streamConfigGlobalProperties.put(StreamsConfig.APPLICATION_ID_CONFIG, group);
 
-		//Custom StreamsConfig implementation that overrides to guarantee that the deserialization handler is cached.
-		StreamsConfig streamsConfig = new StreamsConfig(streamConfigGlobalProperties) {
-			DeserializationExceptionHandler deserializationExceptionHandler;
+		Map<String, Object> streamConfigGlobalProperties = applicationContext.getBean("streamConfigGlobalProperties", Map.class);
+
+		KafkaStreamsConsumerProperties extendedConsumerProperties = this.kafkaStreamsExtendedBindingProperties.getExtendedConsumerProperties(inboundName);
+		streamConfigGlobalProperties.putAll(extendedConsumerProperties.getConfiguration());
+
+		String applicationId = extendedConsumerProperties.getApplicationId();
+		//override application.id if set at the individual binding level.
+		if (StringUtils.hasText(applicationId)) {
+			streamConfigGlobalProperties.put(StreamsConfig.APPLICATION_ID_CONFIG, applicationId);
+		}
+
+		int concurrency = this.bindingServiceProperties.getConsumerProperties(inboundName).getConcurrency();
+		// override concurrency if set at the individual binding level.
+		if (concurrency > 1) {
+			streamConfigGlobalProperties.put(StreamsConfig.NUM_STREAM_THREADS_CONFIG, concurrency);
+		}
+
+		Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers = applicationContext.getBean("kafkaStreamsDlqDispatchers", Map.class);
+
+		KafkaStreamsConfiguration kafkaStreamsConfiguration = new KafkaStreamsConfiguration(streamConfigGlobalProperties) {
 			@Override
-			@SuppressWarnings("unchecked")
-			public <T> T getConfiguredInstance(String key, Class<T> clazz) {
-				if (key.equals(StreamsConfig.DEFAULT_DESERIALIZATION_EXCEPTION_HANDLER_CLASS_CONFIG)){
-					if (deserializationExceptionHandler != null){
-						return (T)deserializationExceptionHandler;
-					}
-					else {
-						T t = super.getConfiguredInstance(key, clazz);
-						deserializationExceptionHandler = (DeserializationExceptionHandler)t;
-						return t;
-					}
-				}
-				return super.getConfiguredInstance(key, clazz);
+			public Properties asProperties() {
+				Properties properties = super.asProperties();
+				properties.put(SendToDlqAndContinue.KAFKA_STREAMS_DLQ_DISPATCHERS, kafkaStreamsDlqDispatchers);
+				return properties;
 			}
 		};
+
 		StreamsBuilderFactoryBean streamsBuilder = this.cleanupConfig == null
-				? new StreamsBuilderFactoryBean(streamsConfig)
-				: new StreamsBuilderFactoryBean(streamsConfig, this.cleanupConfig);
+				? new StreamsBuilderFactoryBean(kafkaStreamsConfiguration)
+				: new StreamsBuilderFactoryBean(kafkaStreamsConfiguration, this.cleanupConfig);
 		streamsBuilder.setAutoStartup(false);
 		BeanDefinition streamsBuilderBeanDefinition =
 				BeanDefinitionBuilder.genericBeanDefinition((Class<StreamsBuilderFactoryBean>) streamsBuilder.getClass(), () -> streamsBuilder)
-				.getRawBeanDefinition();
+						.getRawBeanDefinition();
 		((BeanDefinitionRegistry) beanFactory).registerBeanDefinition("stream-builder-" + method.getName(), streamsBuilderBeanDefinition);
 		StreamsBuilderFactoryBean streamsBuilderX = applicationContext.getBean("&stream-builder-" + method.getName(), StreamsBuilderFactoryBean.class);
-		BeanDefinition streamsConfigBeanDefinition =
-				BeanDefinitionBuilder.genericBeanDefinition((Class<StreamsConfig>) streamsConfig.getClass(), () -> streamsConfig)
-						.getRawBeanDefinition();
-		((BeanDefinitionRegistry) beanFactory).registerBeanDefinition("streamsConfig-" + method.getName(), streamsConfigBeanDefinition);
-
-		methodStreamsBuilderFactoryBeanMap.put(method, streamsBuilderX);
-		return streamsConfig;
+		this.methodStreamsBuilderFactoryBeanMap.put(method, streamsBuilderX);
 	}
 
 	@Override
@@ -461,15 +509,15 @@ class KafkaStreamsStreamListenerSetupMethodOrchestrator implements StreamListene
 	private boolean isDeclarativeOutput(Method m, String targetBeanName) {
 		boolean declarative;
 		Class<?> returnType = m.getReturnType();
-		if (returnType.isArray()){
+		if (returnType.isArray()) {
 			Class<?> targetBeanClass = this.applicationContext.getType(targetBeanName);
 			declarative = this.streamListenerResultAdapters.stream()
-					.anyMatch(slpa -> slpa.supports(returnType.getComponentType(), targetBeanClass));
+					.anyMatch((slpa) -> slpa.supports(returnType.getComponentType(), targetBeanClass));
 			return declarative;
 		}
 		Class<?> targetBeanClass = this.applicationContext.getType(targetBeanName);
 		declarative = this.streamListenerResultAdapters.stream()
-				.anyMatch(slpa -> slpa.supports(returnType, targetBeanClass));
+				.anyMatch((slpa) -> slpa.supports(returnType, targetBeanClass));
 		return declarative;
 	}
 

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/KeyValueSerdeResolver.java

@@ -44,25 +44,26 @@ import org.springframework.util.StringUtils;
  * If native encoding is disabled, then the binder will do serialization using a contentType. Keys are always serialized
  * by the broker.
  *
- * For state store, use serdes class specified in {@link KafkaStreamsStateStore} to create Serde accordingly.
+ * For state store, use serdes class specified in
+ * {@link org.springframework.cloud.stream.binder.kafka.streams.annotations.KafkaStreamsStateStore} to create Serde accordingly.
  *
  * @author Soby Chacko
  * @author Lei Chen
  */
 class KeyValueSerdeResolver {
 
-	private final Map<String,Object> streamConfigGlobalProperties;
+	private final Map<String, Object> streamConfigGlobalProperties;
 
 	private final KafkaStreamsBinderConfigurationProperties binderConfigurationProperties;
 
-	KeyValueSerdeResolver(Map<String,Object> streamConfigGlobalProperties,
+	KeyValueSerdeResolver(Map<String, Object> streamConfigGlobalProperties,
 							KafkaStreamsBinderConfigurationProperties binderConfigurationProperties) {
 		this.streamConfigGlobalProperties = streamConfigGlobalProperties;
 		this.binderConfigurationProperties = binderConfigurationProperties;
 	}
 
 	/**
-	 * Provide the {@link Serde} for inbound key
+	 * Provide the {@link Serde} for inbound key.
 	 *
 	 * @param extendedConsumerProperties binding level extended {@link KafkaStreamsConsumerProperties}
 	 * @return configurd {@link Serde} for the inbound key.
@@ -74,7 +75,7 @@ class KeyValueSerdeResolver {
 	}
 
 	/**
-	 * Provide the {@link Serde} for inbound value
+	 * Provide the {@link Serde} for inbound value.
 	 *
 	 * @param consumerProperties {@link ConsumerProperties} on binding
 	 * @param extendedConsumerProperties binding level extended {@link KafkaStreamsConsumerProperties}
@@ -92,16 +93,16 @@ class KeyValueSerdeResolver {
 			else {
 				valueSerde = Serdes.ByteArray();
 			}
-			valueSerde.configure(streamConfigGlobalProperties, false);
+			valueSerde.configure(this.streamConfigGlobalProperties, false);
 		}
-		catch (ClassNotFoundException e) {
-			throw new IllegalStateException("Serde class not found: ", e);
+		catch (ClassNotFoundException ex) {
+			throw new IllegalStateException("Serde class not found: ", ex);
 		}
 		return valueSerde;
 	}
 
 	/**
-	 * Provide the {@link Serde} for outbound key
+	 * Provide the {@link Serde} for outbound key.
 	 *
 	 * @param properties binding level extended {@link KafkaStreamsProducerProperties}
 	 * @return configurd {@link Serde} for the outbound key.
@@ -111,7 +112,7 @@ class KeyValueSerdeResolver {
 	}
 
 	/**
-	 * Provide the {@link Serde} for outbound value
+	 * Provide the {@link Serde} for outbound value.
 	 *
 	 * @param producerProperties {@link ProducerProperties} on binding
 	 * @param kafkaStreamsProducerProperties binding level extended {@link KafkaStreamsProducerProperties}
@@ -126,16 +127,16 @@ class KeyValueSerdeResolver {
 			else {
 				valueSerde = Serdes.ByteArray();
 			}
-			valueSerde.configure(streamConfigGlobalProperties, false);
+			valueSerde.configure(this.streamConfigGlobalProperties, false);
 		}
-		catch (ClassNotFoundException e) {
-			throw new IllegalStateException("Serde class not found: ", e);
+		catch (ClassNotFoundException ex) {
+			throw new IllegalStateException("Serde class not found: ", ex);
 		}
 		return valueSerde;
 	}
 
 	/**
-	 * Provide the {@link Serde} for state store
+	 * Provide the {@link Serde} for state store.
 	 *
 	 * @param keySerdeString serde class used for key
 	 * @return {@link Serde} for the state store key.
@@ -145,7 +146,7 @@ class KeyValueSerdeResolver {
 	}
 
 	/**
-	 * Provide the {@link Serde} for state store value
+	 * Provide the {@link Serde} for state store value.
 	 *
 	 * @param valueSerdeString serde class used for value
 	 * @return {@link Serde} for the state store value.
@@ -154,8 +155,8 @@ class KeyValueSerdeResolver {
 		try {
 			return getValueSerde(valueSerdeString);
 		}
-		catch (ClassNotFoundException e) {
-			throw new IllegalStateException("Serde class not found: ", e);
+		catch (ClassNotFoundException ex) {
+			throw new IllegalStateException("Serde class not found: ", ex);
 		}
 	}
 
@@ -169,11 +170,11 @@ class KeyValueSerdeResolver {
 				keySerde = this.binderConfigurationProperties.getConfiguration().containsKey("default.key.serde") ?
 						Utils.newInstance(this.binderConfigurationProperties.getConfiguration().get("default.key.serde"), Serde.class) : Serdes.ByteArray();
 			}
-			keySerde.configure(streamConfigGlobalProperties, true);
+			keySerde.configure(this.streamConfigGlobalProperties, true);
 
 		}
-		catch (ClassNotFoundException e) {
-			throw new IllegalStateException("Serde class not found: ", e);
+		catch (ClassNotFoundException ex) {
+			throw new IllegalStateException("Serde class not found: ", ex);
 		}
 		return keySerde;
 	}

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/QueryableStoreRegistry.java

@@ -49,7 +49,7 @@ public class QueryableStoreRegistry {
 	public <T> T getQueryableStoreType(String storeName, QueryableStoreType<T> storeType) {
 
 		for (KafkaStreams kafkaStream : this.kafkaStreamsRegistry.getKafkaStreams()) {
-			try{
+			try {
 				T store = kafkaStream.store(storeName, storeType);
 				if (store != null) {
 					return store;

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/SendToDlqAndContinue.java

@@ -35,11 +35,15 @@ import org.springframework.util.ReflectionUtils;
  * Custom implementation for {@link DeserializationExceptionHandler} that sends the records
  * in error to a DLQ topic, then continue stream processing on new records.
  *
- * @since 2.0.0
- *
  * @author Soby Chacko
+ * @since 2.0.0
  */
-public class SendToDlqAndContinue implements DeserializationExceptionHandler{
+public class SendToDlqAndContinue implements DeserializationExceptionHandler {
+
+	/**
+	 * Key used for DLQ dispatchers.
+	 */
+	public static final String KAFKA_STREAMS_DLQ_DISPATCHERS = "spring.cloud.stream.kafka.streams.dlq.dispatchers";
 
 	/**
 	 * DLQ dispatcher per topic in the application context. The key here is not the actual DLQ topic
@@ -55,15 +59,15 @@ public class SendToDlqAndContinue implements DeserializationExceptionHandler{
 	 * @param value to send
 	 * @param partition for the topic where this record should be sent
 	 */
-	public void sendToDlq(String topic, byte[] key, byte[] value, int partition){
-		KafkaStreamsDlqDispatch kafkaStreamsDlqDispatch = dlqDispatchers.get(topic);
-		kafkaStreamsDlqDispatch.sendToDlq(key,value, partition);
+	public void sendToDlq(String topic, byte[] key, byte[] value, int partition) {
+		KafkaStreamsDlqDispatch kafkaStreamsDlqDispatch = this.dlqDispatchers.get(topic);
+		kafkaStreamsDlqDispatch.sendToDlq(key, value, partition);
 	}
 
 	@Override
 	@SuppressWarnings("unchecked")
 	public DeserializationHandlerResponse handle(ProcessorContext context, ConsumerRecord<byte[], byte[]> record, Exception exception) {
-		KafkaStreamsDlqDispatch kafkaStreamsDlqDispatch = dlqDispatchers.get(record.topic());
+		KafkaStreamsDlqDispatch kafkaStreamsDlqDispatch = this.dlqDispatchers.get(record.topic());
 		kafkaStreamsDlqDispatch.sendToDlq(record.key(), record.value(), record.partition());
 		context.commit();
 
@@ -73,19 +77,19 @@ public class SendToDlqAndContinue implements DeserializationExceptionHandler{
 		// following code will use reflection to get access to the underlying KafkaConsumer.
 		// It works with Kafka 1.0.0, but there is no guarantee it will work in future versions of kafka as
 		// we access private fields by name using reflection, but it is a temporary fix.
-		if (context instanceof ProcessorContextImpl){
-			ProcessorContextImpl processorContextImpl = (ProcessorContextImpl)context;
+		if (context instanceof ProcessorContextImpl) {
+			ProcessorContextImpl processorContextImpl = (ProcessorContextImpl) context;
 			Field task = ReflectionUtils.findField(ProcessorContextImpl.class, "task");
 			ReflectionUtils.makeAccessible(task);
 			Object taskField = ReflectionUtils.getField(task, processorContextImpl);
 
-			if (taskField.getClass().isAssignableFrom(StreamTask.class)){
-				StreamTask streamTask = (StreamTask)taskField;
+			if (taskField.getClass().isAssignableFrom(StreamTask.class)) {
+				StreamTask streamTask = (StreamTask) taskField;
 				Field consumer = ReflectionUtils.findField(StreamTask.class, "consumer");
 				ReflectionUtils.makeAccessible(consumer);
 				Object kafkaConsumerField = ReflectionUtils.getField(consumer, streamTask);
-				if (kafkaConsumerField.getClass().isAssignableFrom(KafkaConsumer.class)){
-					KafkaConsumer kafkaConsumer = (KafkaConsumer)kafkaConsumerField;
+				if (kafkaConsumerField.getClass().isAssignableFrom(KafkaConsumer.class)) {
+					KafkaConsumer kafkaConsumer = (KafkaConsumer) kafkaConsumerField;
 					final Map<TopicPartition, OffsetAndMetadata> consumedOffsetsAndMetadata = new HashMap<>();
 					TopicPartition tp = new TopicPartition(record.topic(), record.partition());
 					OffsetAndMetadata oam = new OffsetAndMetadata(record.offset() + 1);
@@ -98,11 +102,13 @@ public class SendToDlqAndContinue implements DeserializationExceptionHandler{
 	}
 
 	@Override
+	@SuppressWarnings("unchecked")
 	public void configure(Map<String, ?> configs) {
-
+		this.dlqDispatchers = (Map<String, KafkaStreamsDlqDispatch>) configs.get(KAFKA_STREAMS_DLQ_DISPATCHERS);
 	}
 
-	void addKStreamDlqDispatch(String topic, KafkaStreamsDlqDispatch kafkaStreamsDlqDispatch){
-		dlqDispatchers.put(topic, kafkaStreamsDlqDispatch);
+	void addKStreamDlqDispatch(String topic, KafkaStreamsDlqDispatch kafkaStreamsDlqDispatch) {
+		this.dlqDispatchers.put(topic, kafkaStreamsDlqDispatch);
 	}
+
 }

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/StreamsBuilderFactoryManager.java

@@ -20,7 +20,7 @@ import java.util.Set;
 
 import org.springframework.context.SmartLifecycle;
 import org.springframework.kafka.KafkaException;
-import org.springframework.kafka.core.StreamsBuilderFactoryBean;
+import org.springframework.kafka.config.StreamsBuilderFactoryBean;
 
 /**
  * Iterate through all {@link StreamsBuilderFactoryBean} in the application context
@@ -68,11 +68,12 @@ class StreamsBuilderFactoryManager implements SmartLifecycle {
 				Set<StreamsBuilderFactoryBean> streamsBuilderFactoryBeans = this.kafkaStreamsBindingInformationCatalogue.getStreamsBuilderFactoryBeans();
 				for (StreamsBuilderFactoryBean streamsBuilderFactoryBean : streamsBuilderFactoryBeans) {
 					streamsBuilderFactoryBean.start();
-					kafkaStreamsRegistry.registerKafkaStreams(streamsBuilderFactoryBean.getKafkaStreams());
+					this.kafkaStreamsRegistry.registerKafkaStreams(streamsBuilderFactoryBean.getKafkaStreams());
 				}
 				this.running = true;
-			} catch (Exception e) {
-				throw new KafkaException("Could not start stream: ", e);
+			}
+			catch (Exception ex) {
+				throw new KafkaException("Could not start stream: ", ex);
 			}
 		}
 	}
@@ -86,8 +87,8 @@ class StreamsBuilderFactoryManager implements SmartLifecycle {
 						streamsBuilderFactoryBean.stop();
 					}
 				}
-				catch (Exception e) {
-					throw new IllegalStateException(e);
+				catch (Exception ex) {
+					throw new IllegalStateException(ex);
 				}
 				finally {
 					this.running = false;

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/annotations/KafkaStreamsProcessor.java

@@ -34,16 +34,16 @@ import org.springframework.cloud.stream.annotation.Output;
  * <pre class="code">
  *     interface KStreamBranchProcessor {
  *         &#064;Input("input")
- *         KStream<?, ?> input();
+ *         KStream&lt;?, ?&gt; input();
  *
  *         &#064;Output("output-1")
- *         KStream<?, ?> output1();
+ *         KStream&lt;?, ?&gt; output1();
  *
  *         &#064;Output("output-2")
- *         KStream<?, ?> output2();
+ *         KStream&lt;?, ?&gt; output2();
  *
  *         &#064;Output("output-3")
- *         KStream<?, ?> output3();
+ *         KStream&lt;?, ?&gt; output3();
  *
  *         ......
  *
@@ -53,13 +53,13 @@ import org.springframework.cloud.stream.annotation.Output;
  * <pre class="code">
  *     interface KStreamKtableProcessor {
  *         &#064;Input("input-1")
- *         KStream<?, ?> input1();
+ *         KStream&lt;?, ?&gt; input1();
  *
  *         &#064;Input("input-2")
- *         KTable<?, ?> input2();
+ *         KTable&lt;?, ?&gt; input2();
  *
  *         &#064;Output("output")
- *         KStream<?, ?> output();
+ *         KStream&lt;?, ?&gt; output();
  *
  *         ......
  *
@@ -72,12 +72,16 @@ import org.springframework.cloud.stream.annotation.Output;
 public interface KafkaStreamsProcessor {
 
 	/**
+	 * Input binding.
+	 *
 	 * @return {@link Input} binding for {@link KStream} type.
 	 */
 	@Input("input")
 	KStream<?, ?> input();
 
 	/**
+	 * Output binding.
+	 *
 	 * @return {@link Output} binding for {@link KStream} type.
 	 */
 	@Output("output")

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/annotations/KafkaStreamsStateStore.java

@@ -24,7 +24,6 @@ import java.lang.annotation.Target;
 
 import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStreamsStateStoreProperties;
 
-
 /**
  * Interface for Kafka Stream state store.
  *
@@ -37,23 +36,23 @@ import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStr
  * <pre class="code">
  *     &#064;StreamListener("input")
  *     &#064;KafkaStreamsStateStore(name="mystate", type= KafkaStreamsStateStoreProperties.StoreType.WINDOW, size=300000)
- *	   public void process(KStream<Object, Product> input) {
+ *	   public void process(KStream&lt;Object, Product&gt; input) {
  *         ......
  *     }
- *</pre>
+ * </pre>
  *
  * With that, you should be able to read/write this state store in your processor/transformer code.
  *
  * <pre class="code">
- * 		new Processor<Object, Product>() {
- * 			WindowStore<Object, String> state;
+ * 		new Processor&lt;Object, Product&gt;() {
+ * 			WindowStore&lt;Object, String&gt; state;
  * 			&#064;Override
  *			public void init(ProcessorContext processorContext) {
  *			state = (WindowStore)processorContext.getStateStore("mystate");
  *				......
  *			}
  *		}
- *</pre>
+ * </pre>
  *
  * @author Lei Chen
  */
@@ -64,41 +63,57 @@ import org.springframework.cloud.stream.binder.kafka.streams.properties.KafkaStr
 public @interface KafkaStreamsStateStore {
 
 	/**
+	 * Provides name of the state store.
+	 *
 	 * @return name of state store.
 	 */
 	String name() default "";
 
 	/**
+	 * State store type.
+	 *
 	 * @return {@link KafkaStreamsStateStoreProperties.StoreType} of state store.
 	 */
 	KafkaStreamsStateStoreProperties.StoreType type() default KafkaStreamsStateStoreProperties.StoreType.KEYVALUE;
 
 	/**
+	 * Serde used for key.
+	 *
 	 * @return key serde of state store.
 	 */
 	String keySerde() default "org.apache.kafka.common.serialization.Serdes$StringSerde";
 
 	/**
+	 * Serde used for value.
+	 *
 	 * @return value serde of state store.
 	 */
 	String valueSerde() default "org.apache.kafka.common.serialization.Serdes$StringSerde";
 
 	/**
+	 * Length in milli-second of Windowed store window.
+	 *
 	 * @return length in milli-second of window(for windowed store).
 	 */
 	long lengthMs() default 0;
 
 	/**
+	 * Retention period for Windowed store windows.
+	 *
 	 * @return the maximum period of time in milli-second to keep each window in this store(for windowed store).
 	 */
 	long retentionMs() default 0;
 
 	/**
+	 * Whether catching is enabled or not.
+	 *
 	 * @return whether caching should be enabled on the created store.
 	 */
 	boolean cache() default false;
 
 	/**
+	 * Whether logging is enabled or not.
+	 *
 	 * @return whether logging should be enabled on the created store.
 	 */
 	boolean logging() default true;

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/properties/KafkaStreamsApplicationSupportProperties.java

@@ -32,13 +32,16 @@ public class KafkaStreamsApplicationSupportProperties {
 	private TimeWindow timeWindow;
 
 	public TimeWindow getTimeWindow() {
-		return timeWindow;
+		return this.timeWindow;
 	}
 
 	public void setTimeWindow(TimeWindow timeWindow) {
 		this.timeWindow = timeWindow;
 	}
 
+	/**
+	 * Properties required by time windows.
+	 */
 	public static class TimeWindow {
 
 		private int length;
@@ -46,7 +49,7 @@ public class KafkaStreamsApplicationSupportProperties {
 		private int advanceBy;
 
 		public int getLength() {
-			return length;
+			return this.length;
 		}
 
 		public void setLength(int length) {
@@ -54,7 +57,7 @@ public class KafkaStreamsApplicationSupportProperties {
 		}
 
 		public int getAdvanceBy() {
-			return advanceBy;
+			return this.advanceBy;
 		}
 
 		public void setAdvanceBy(int advanceBy) {

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/properties/KafkaStreamsBinderConfigurationProperties.java

@@ -20,6 +20,8 @@ import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
 import org.springframework.cloud.stream.binder.kafka.properties.KafkaBinderConfigurationProperties;
 
 /**
+ * Kafka Streams binder configuration properties.
+ *
  * @author Soby Chacko
  * @author Gary Russell
  */
@@ -29,16 +31,28 @@ public class KafkaStreamsBinderConfigurationProperties extends KafkaBinderConfig
 		super(kafkaProperties);
 	}
 
+	/**
+	 * Enumeration for various Serde errors.
+	 */
 	public enum SerdeError {
+		/**
+		 * Deserialization error handler with log and continue.
+		 */
 		logAndContinue,
+		/**
+		 * Deserialization error handler with log and fail.
+		 */
 		logAndFail,
+		/**
+		 * Deserialization error handler with DLQ send.
+		 */
 		sendToDlq
 	}
 
-	private String applicationId = "default";
+	private String applicationId;
 
 	public String getApplicationId() {
-		return applicationId;
+		return this.applicationId;
 	}
 
 	public void setApplicationId(String applicationId) {
@@ -53,7 +67,7 @@ public class KafkaStreamsBinderConfigurationProperties extends KafkaBinderConfig
 	private KafkaStreamsBinderConfigurationProperties.SerdeError serdeError;
 
 	public KafkaStreamsBinderConfigurationProperties.SerdeError getSerdeError() {
-		return serdeError;
+		return this.serdeError;
 	}
 
 	public void setSerdeError(KafkaStreamsBinderConfigurationProperties.SerdeError serdeError) {

spring-cloud-stream-binder-kafka-streams/src/main/java/org/springframework/cloud/stream/binder/kafka/streams/properties/KafkaStreamsBindingProperties.java

@@ -16,17 +16,21 @@
 
 package org.springframework.cloud.stream.binder.kafka.streams.properties;
 
+import org.springframework.cloud.stream.binder.BinderSpecificPropertiesProvider;
+
 /**
+ * Extended binding properties holder that delegates to Kafka Streams producer and consumer properties.
+ *
  * @author Marius Bogoevici
  */
-public class KafkaStreamsBindingProperties {
+public class KafkaStreamsBindingProperties implements BinderSpecificPropertiesProvider {
 
 	private KafkaStreamsConsumerProperties consumer = new KafkaStreamsConsumerProperties();
 
 	private KafkaStreamsProducerProperties producer = new KafkaStreamsProducerProperties();
 
 	public KafkaStreamsConsumerProperties getConsumer() {
-		return consumer;
+		return this.consumer;
 	}
 
 	public void setConsumer(KafkaStreamsConsumerProperties consumer) {
@@ -34,7 +38,7 @@ public class KafkaStreamsBindingProperties {
 	}
 
 	public KafkaStreamsProducerProperties getProducer() {
-		return producer;
+		return this.producer;
 	}
 
 	public void setProducer(KafkaStreamsProducerProperties producer) {