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Transactional Producer Doc Polishing

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- explain txId requirements for producer-initiated transactions
This commit is contained in:
Gary Russell
2020-03-30 11:13:44 -04:00
committed by Soby Chacko
parent cc5d1b1aa6
commit 445eabc59a
1 changed files with 8 additions and 2 deletions
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10
docs/src/main/asciidoc/overview.adoc
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@@ -583,10 +583,14 @@ If you wish to use transactions in a source application, or from some arbitrary
[source, java] [source, java]
---- ----
@Bean @Bean
public PlatformTransactionManager transactionManager(BinderFactory binders) { public PlatformTransactionManager transactionManager(BinderFactory binders,
@Value("${unique.tx.id.per.instance}") String txId) {
ProducerFactory<byte[], byte[]> pf = ((KafkaMessageChannelBinder) binders.getBinder(null, ProducerFactory<byte[], byte[]> pf = ((KafkaMessageChannelBinder) binders.getBinder(null,
MessageChannel.class)).getTransactionalProducerFactory(); MessageChannel.class)).getTransactionalProducerFactory();
return new KafkaTransactionManager<>(pf); KafkaTransactionManager tm = new KafkaTransactionManager<>(pf);
tm.setTransactionId(txId)
return tm;
} }
---- ----
==== ====
@@ -613,6 +617,8 @@ public static class Sender {
If you wish to synchronize producer-only transactions with those from some other transaction manager, use a `ChainedTransactionManager`. If you wish to synchronize producer-only transactions with those from some other transaction manager, use a `ChainedTransactionManager`.
IMPORTANT: If you deploy multiple instances of your application, each instance needs a unique `transactionIdPrefix`.
[[kafka-error-channels]] [[kafka-error-channels]]
=== Error Channels === Error Channels