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Polish "Improve Kafka Auto-configuration"

Browse Source 
Closes gh-14215
pull/14228/head
Stephane Nicoll 6 years ago
parent 59c6dc5c7a
commit b7ae55866e
4 changed files with 125 additions and 81 deletions
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6
spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/ConcurrentKafkaListenerContainerFactoryConfigurer.java
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@ -78,7 +78,7 @@ public class ConcurrentKafkaListenerContainerFactoryConfigurer {
* Set the {@link KafkaAwareTransactionManager} to use.
* @param transactionManager the transaction manager
*/
public void setTransactionManager(
void setTransactionManager(
KafkaAwareTransactionManager<Object, Object> transactionManager) {
this.transactionManager = transactionManager;
}
@ -87,7 +87,7 @@ public class ConcurrentKafkaListenerContainerFactoryConfigurer {
* Set the {@link ErrorHandler} to use.
* @param errorHandler the error handler
*/
public void setErrorHandler(ErrorHandler errorHandler) {
void setErrorHandler(ErrorHandler errorHandler) {
this.errorHandler = errorHandler;
}
@ -95,7 +95,7 @@ public class ConcurrentKafkaListenerContainerFactoryConfigurer {
* Set the {@link AfterRollbackProcessor} to use.
* @param afterRollbackProcessor the after rollback processor
*/
public void setAfterRollbackProcessor(
void setAfterRollbackProcessor(
AfterRollbackProcessor<Object, Object> afterRollbackProcessor) {
this.afterRollbackProcessor = afterRollbackProcessor;
}

4
spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/KafkaAnnotationDrivenConfiguration.java
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@ -1,5 +1,5 @@
/*
* Copyright 2012-2017 the original author or authors.
* Copyright 2012-2018 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.
@ -75,8 +75,8 @@ class KafkaAnnotationDrivenConfiguration {
configurer.setKafkaProperties(this.properties);
configurer.setMessageConverter(this.messageConverter);
configurer.setReplyTemplate(this.kafkaTemplate);
configurer.setErrorHandler(this.errorHandler);
configurer.setTransactionManager(this.transactionManager);
configurer.setErrorHandler(this.errorHandler);
configurer.setAfterRollbackProcessor(this.afterRollbackProcessor);
return configurer;
}

98
spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/kafka/KafkaAutoConfigurationTests.java
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@ -59,6 +59,7 @@ import org.springframework.kafka.support.converter.MessagingMessageConverter;
import org.springframework.kafka.support.converter.RecordMessageConverter;
import org.springframework.kafka.test.utils.KafkaTestUtils;
import org.springframework.kafka.transaction.ChainedKafkaTransactionManager;
import org.springframework.kafka.transaction.KafkaAwareTransactionManager;
import org.springframework.kafka.transaction.KafkaTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
@ -81,10 +82,8 @@ public class KafkaAutoConfigurationTests {
@Test
public void consumerProperties() {
this.contextRunner.withUserConfiguration(TestConfiguration.class)
.withPropertyValues("spring.kafka.bootstrap-servers=foo:1234",
"spring.kafka.properties.foo=bar",
"spring.kafka.properties.baz=qux",
this.contextRunner.withPropertyValues("spring.kafka.bootstrap-servers=foo:1234",
"spring.kafka.properties.foo=bar", "spring.kafka.properties.baz=qux",
"spring.kafka.properties.foo.bar.baz=qux.fiz.buz",
"spring.kafka.ssl.key-password=p1",
"spring.kafka.ssl.key-store-location=classpath:ksLoc",
@ -160,20 +159,14 @@ public class KafkaAutoConfigurationTests {
assertThat(configs.get("baz")).isEqualTo("qux");
assertThat(configs.get("foo.bar.baz")).isEqualTo("qux.fiz.buz");
assertThat(configs.get("fiz.buz")).isEqualTo("fix.fox");
ConcurrentKafkaListenerContainerFactory<?, ?> factory = context
.getBean(ConcurrentKafkaListenerContainerFactory.class);
assertThat(KafkaTestUtils.getPropertyValue(factory, "errorHandler"))
.isSameAs(context.getBean("errorHandler"));
});
}
@Test
public void producerProperties() {
this.contextRunner.withUserConfiguration(TestConfiguration.class)
.withPropertyValues("spring.kafka.clientId=cid",
this.contextRunner.withPropertyValues("spring.kafka.clientId=cid",
"spring.kafka.properties.foo.bar.baz=qux.fiz.buz",
"spring.kafka.producer.acks=all",
"spring.kafka.producer.batch-size=20",
"spring.kafka.producer.acks=all", "spring.kafka.producer.batch-size=20",
"spring.kafka.producer.bootstrap-servers=bar:1234", // test
// override
"spring.kafka.producer.buffer-memory=12345",
@ -414,7 +407,7 @@ public class KafkaAutoConfigurationTests {
@SuppressWarnings("unchecked")
@Test
public void listenerProperties() {
this.contextRunner.withUserConfiguration(TestConfiguration.class)
this.contextRunner
.withPropertyValues("spring.kafka.template.default-topic=testTopic",
"spring.kafka.listener.ack-mode=MANUAL",
"spring.kafka.listener.client-id=client",
@ -506,7 +499,6 @@ public class KafkaAutoConfigurationTests {
@Test
public void testConcurrentKafkaListenerContainerFactoryWithCustomMessageConverters() {
this.contextRunner.withUserConfiguration(MessageConverterConfiguration.class)
.withPropertyValues("spring.kafka.producer.transaction-id-prefix=test")
.run((context) -> {
ConcurrentKafkaListenerContainerFactory<?, ?> kafkaListenerContainerFactory = context
.getBean(ConcurrentKafkaListenerContainerFactory.class);
@ -514,11 +506,56 @@ public class KafkaAutoConfigurationTests {
kafkaListenerContainerFactory);
assertThat(dfa.getPropertyValue("messageConverter"))
.isSameAs(context.getBean("myMessageConverter"));
assertThat(kafkaListenerContainerFactory.getContainerProperties()
.getTransactionManager()).isSameAs(
context.getBean("chainedTransactionManager"));
});
}
@Test
public void testConcurrentKafkaListenerContainerFactoryWithCustomErrorHandler() {
this.contextRunner.withUserConfiguration(ErrorHandlerConfiguration.class)
.run((context) -> {
ConcurrentKafkaListenerContainerFactory<?, ?> factory = context
.getBean(ConcurrentKafkaListenerContainerFactory.class);
assertThat(KafkaTestUtils.getPropertyValue(factory, "errorHandler"))
.isSameAs(context.getBean("errorHandler"));
});
}
@Test
public void testConcurrentKafkaListenerContainerFactoryWithDefaultTransactionManager() {
this.contextRunner
.withPropertyValues("spring.kafka.producer.transaction-id-prefix=test")
.run((context) -> {
assertThat(context).hasSingleBean(KafkaAwareTransactionManager.class);
ConcurrentKafkaListenerContainerFactory<?, ?> factory = context
.getBean(ConcurrentKafkaListenerContainerFactory.class);
assertThat(factory.getContainerProperties().getTransactionManager())
.isSameAs(
context.getBean(KafkaAwareTransactionManager.class));
});
}
@Test
public void testConcurrentKafkaListenerContainerFactoryWithCustomTransactionManager() {
this.contextRunner.withUserConfiguration(TransactionManagerConfiguration.class)
.withPropertyValues("spring.kafka.producer.transaction-id-prefix=test")
.run((context) -> {
ConcurrentKafkaListenerContainerFactory<?, ?> factory = context
.getBean(ConcurrentKafkaListenerContainerFactory.class);
assertThat(factory.getContainerProperties().getTransactionManager())
.isSameAs(context.getBean("chainedTransactionManager"));
});
}
@Test
public void testConcurrentKafkaListenerContainerFactoryWithCustomAfterRollbackProcessor() {
this.contextRunner
.withUserConfiguration(AfterRollbackProcessorConfiguration.class)
.run((context) -> {
ConcurrentKafkaListenerContainerFactory<?, ?> factory = context
.getBean(ConcurrentKafkaListenerContainerFactory.class);
DirectFieldAccessor dfa = new DirectFieldAccessor(factory);
assertThat(dfa.getPropertyValue("afterRollbackProcessor"))
.isSameAs(context.getBean("arp"));
.isSameAs(context.getBean("afterRollbackProcessor"));
});
}
@ -535,34 +572,43 @@ public class KafkaAutoConfigurationTests {
}
@Configuration
protected static class TestConfiguration {
protected static class MessageConverterConfiguration {
@Bean
public SeekToCurrentErrorHandler errorHandler() {
return new SeekToCurrentErrorHandler();
public RecordMessageConverter myMessageConverter() {
return mock(RecordMessageConverter.class);
}
}
@Configuration
protected static class MessageConverterConfiguration {
protected static class ErrorHandlerConfiguration {
@Bean
public RecordMessageConverter myMessageConverter() {
return mock(RecordMessageConverter.class);
public SeekToCurrentErrorHandler errorHandler() {
return new SeekToCurrentErrorHandler();
}
}
@Configuration
protected static class TransactionManagerConfiguration {
@Bean
@Primary
public PlatformTransactionManager chainedTransactionManager(
KafkaTransactionManager<String, String> kafkaTransactionManager) {
return new ChainedKafkaTransactionManager<String, String>(
kafkaTransactionManager);
}
}
@Configuration
protected static class AfterRollbackProcessorConfiguration {
@Bean
public AfterRollbackProcessor<Object, Object> arp() {
public AfterRollbackProcessor<Object, Object> afterRollbackProcessor() {
return (records, consumer, ex, recoverable) -> {
// no-op
};

22
spring-boot-project/spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc
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@ -5628,18 +5628,6 @@ When the Apache Kafka infrastructure is present, any bean can be annotated with
`@KafkaListener` to create a listener endpoint. If no `KafkaListenerContainerFactory` has
been defined, a default one is automatically configured with keys defined in
`spring.kafka.listener.*`.
If the property `spring.kafka.producer.transaction-id-prefix` is defined, a
`KafkaTransactionManager` will be auto-configured with name `kafkaTransactionManager` and
will be wired into the container factory.
Also, if `RecordMessageConverter`, `ErrorHandler` and/or
`AfterRollbackProcessor` beans are defined, they are automatically associated to the
default factory.
IMPORTANT: The auto configuration of these beans occur if there is just a single
instance.
When using a `ChainedKafkaTransactionManager`, it will usually reference the configured
`KafkaTransactionManager` bean, so the chained manager must be marked
`@Primary` if you want it wired into the container factory.
The following component creates a listener endpoint on the `someTopic` topic:
@ -5656,6 +5644,16 @@ The following component creates a listener endpoint on the `someTopic` topic:
}
----
If a `KafkaTransactionManager` bean is defined, it is automatically associated to the
container factory. Similarly, if a `RecordMessageConverter`, `ErrorHandler` or
`AfterRollbackProcessor` bean is defined, it is automatically associated to the default
factory.
TIP: A custom `ChainedKafkaTransactionManager` must be marked `@Primary` as it usually
reference the auto-configured `KafkaTransactionManager` bean.
[[boot-features-kafka-streams]]
==== Kafka Streams
Spring for Apache Kafka provides a factory bean to create a `StreamsBuilder` object and

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