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This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener). # Fixed URLs ## Fixed But Review Recommended These URLs were fixed, but the https status was not OK. However, the https status was the same as the http request or http redirected to an https URL, so they were migrated. Your review is recommended. * [ ] http://docs.spring.io/spring-kafka/reference/htmlsingle/ (301) with 2 occurrences migrated to: https://docs.spring.io/spring-kafka/reference/htmlsingle/ ([https](https://docs.spring.io/spring-kafka/reference/htmlsingle/) result 404). # Ignored These URLs were intentionally ignored. * http://%s:%d/%s with 2 occurrences * http://127.0.0.1:8081/config with 2 occurrences * http://localhost with 2 occurrences * http://localhost:15672 with 1 occurrences * http://localhost:64398/ with 1 occurrences * http://localhost:64399/orders with 1 occurrences * http://localhost:8080 with 8 occurrences * http://localhost:8080/ with 1 occurrences * http://localhost:8080/charts/top-five?genre=Punk with 1 occurrences * http://localhost:8080/events with 2 occurrences * http://localhost:8081 with 14 occurrences * http://localhost:8082/charts/top-five?genre=Punk with 1 occurrences * http://localhost:8990 with 4 occurrences * http://localhost:9009/messages with 9 occurrences * http://localhost:9009/messagesX with 1 occurrences * http://localhost:9010/messages with 6 occurrences * http://localhost:9010/messagesX with 1 occurrences
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Spring Cloud Stream Polled Consumer with Embedded Kafka Broker Sample
In this Spring Cloud Stream sample, an embedded kafka broker is used for testing a polled consumer.
Requirements
To run this sample, you will need to have installed:
- Java 8 or Above
Code Tour
This sample is a Spring Boot application that uses Spring Cloud Stream to receive a String message and forward an upper case version of that String; it uses the Kafka binder.
It uses a Polled Consumer (rather than a message-driven @StreamListener).
- PolledConsumerApplication - the Spring Boot Main Application
- PolledConsumerApplicationTests - the test case
The spring-kafka-test dependency added to the pom.xml puts the KafkaEmbedded JUnit @Rule on the class path.
Refer to the Spring for Apache Kafka Reference Manual for more information about this.
Notice how the @BeforeClass method sets up the Boot and binder properties to locate the servers.
See the test method for the details on interacting with Embedded Kafka. The test method starts by sending a message to the input destination. It then creates a consumer to consume from the output destination; gets the output message and asserts that it's an upper case version of the sent message.
Building with Maven
Build the sample and run the test by executing:
./mvnw clean package
or run the test in your favorite IDE.
=== Running the app:
Go to the root of the repository and do:
docker-compose up -d
./mvnw clean package
java -jar target/polled-consumer-0.0.1-SNAPSHOT.jar
Then send/receive messages to/from the topics.
$ docker exec -it kafka-polledconsumer /opt/kafka/bin/kafka-console-producer.sh --broker-list 127.0.0.1:9092 --topic polledConsumerIn
On another terminal:
and
$ docker exec -it kafka-polledconsumer /opt/kafka/bin/kafka-console-consumer.sh --bootstrap-server 127.0.0.1:9092 --topic polledConsumerOut --from-beginning
Once you are done testing, stop the Kafka cluster: docker-compose down