Package org.springframework.integration.kafka.dsl

Class KafkaProducerMessageHandlerSpec<K,​V,​S extends KafkaProducerMessageHandlerSpec<K,​V,​S>>

java.lang.Object
org.springframework.beans.factory.config.AbstractFactoryBean<T>
org.springframework.integration.dsl.IntegrationComponentSpec<S,​H>
org.springframework.integration.dsl.MessageHandlerSpec<S,​KafkaProducerMessageHandler<K,​V>>
org.springframework.integration.kafka.dsl.KafkaProducerMessageHandlerSpec<K,​V,​S>
Type Parameters:
K - the key type.
V - the value type.
S - the KafkaProducerMessageHandlerSpec extension type.
All Implemented Interfaces:
org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanClassLoaderAware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.FactoryBean<KafkaProducerMessageHandler<K,​V>>, org.springframework.beans.factory.InitializingBean, org.springframework.context.Lifecycle, org.springframework.context.Phased, org.springframework.context.SmartLifecycle
Direct Known Subclasses:
KafkaOutboundGatewaySpec, KafkaProducerMessageHandlerSpec.KafkaProducerMessageHandlerTemplateSpec
public class KafkaProducerMessageHandlerSpec<K,​V,​S extends KafkaProducerMessageHandlerSpec<K,​V,​S>>
extends org.springframework.integration.dsl.MessageHandlerSpec<S,​KafkaProducerMessageHandler<K,​V>>
A MessageHandlerSpec implementation for the KafkaProducerMessageHandler.
Since:
5.4

  • Nested Class Summary

    Nested Classes 
    Modifier and Type Class Description
    static class  KafkaProducerMessageHandlerSpec.KafkaProducerMessageHandlerTemplateSpec<K,​V>
    A KafkaTemplate-based KafkaProducerMessageHandlerSpec extension.

  • Field Summary

    Fields inherited from class org.springframework.integration.dsl.IntegrationComponentSpec

    PARSER, target

    Fields inherited from class org.springframework.beans.factory.config.AbstractFactoryBean

    logger

    Fields inherited from interface org.springframework.beans.factory.FactoryBean

    OBJECT_TYPE_ATTRIBUTE

    Fields inherited from interface org.springframework.context.SmartLifecycle

    DEFAULT_PHASE

  • Method Summary

    Modifier and Type Method Description
    <P> S flush​(java.util.function.Function<org.springframework.messaging.Message<P>,​java.lang.Boolean> flushFunction)
    Configure a Function that will be invoked at runtime to determine whether or not to flush the producer after a send.
    S flushExpression​(java.lang.String flushExpression)
    Configure a SpEL expression to determine whether or not to flush the producer after a send.
    S flushExpression​(org.springframework.expression.Expression flushExpression)
    Configure an Expression to determine whether or not to flush the producer after a send.
    S futuresChannel​(java.lang.String futuresChannel)
    Set the channel to which send futures are sent.
    S futuresChannel​(org.springframework.messaging.MessageChannel futuresChannel)
    Set the channel to which send futures are sent.
    S headerMapper​(org.springframework.kafka.support.KafkaHeaderMapper mapper)
    Specify a header mapper to map spring messaging headers to Kafka headers.
    S messageKey​(java.lang.String messageKey)
    Configure the message key to store message in Kafka topic.
    <P> S messageKey​(java.util.function.Function<org.springframework.messaging.Message<P>,​?> messageKeyFunction)
    Configure a Function that will be invoked at runtime to determine the message key under which a message will be stored in the topic.
    S messageKeyExpression​(java.lang.String messageKeyExpression)
    Configure a SpEL expression to determine the Kafka message key to store at runtime against request Message as a root object of evaluation context.
    S messageKeyExpression​(org.springframework.expression.Expression messageKeyExpression)
    Configure an Expression to determine the Kafka message key to store at runtime against request Message as a root object of evaluation context.
    S partitionId​(java.lang.Integer partitionId)
    Configure a partitionId of Kafka topic.
    <P> S partitionId​(java.util.function.Function<org.springframework.messaging.Message<P>,​java.lang.Integer> partitionIdFunction)
    Configure a Function that will be invoked at runtime to determine the partition id under which a message will be stored in the topic.
    S partitionIdExpression​(java.lang.String partitionIdExpression)
    Configure a SpEL expression to determine the topic partitionId at runtime against request Message as a root object of evaluation context.
    S partitionIdExpression​(org.springframework.expression.Expression partitionIdExpression)
    Configure an Expression to determine the topic partitionId at runtime against request Message as a root object of evaluation context.
    S sendFailureChannel​(java.lang.String sendFailureChannel)
    Set the channel to which failed send results are sent.
    S sendFailureChannel​(org.springframework.messaging.MessageChannel sendFailureChannel)
    Set the channel to which failed send results are sent.
    S sendSuccessChannel​(java.lang.String sendSuccessChannel)
    Set the channel to which successful send results are sent.
    S sendSuccessChannel​(org.springframework.messaging.MessageChannel sendSuccessChannel)
    Set the channel to which successful send results are sent.
    S sendTimeout​(long sendTimeout)
    Specify a timeout in milliseconds how long KafkaProducerMessageHandler should wait wait for send operation results.
    S sync​(boolean sync)
    A boolean indicating if the KafkaProducerMessageHandler should wait for the send operation results or not.
    <P> S timestamp​(java.util.function.Function<org.springframework.messaging.Message<P>,​java.lang.Long> timestampFunction)
    Configure a Function that will be invoked at runtime to determine the Kafka record timestamp will be stored in the topic.
    S timestampExpression​(java.lang.String timestampExpression)
    Configure a SpEL expression to determine the timestamp at runtime against a request Message as a root object of evaluation context.
    S timestampExpression​(org.springframework.expression.Expression timestampExpression)
    Configure an Expression to determine the timestamp at runtime against a request Message as a root object of evaluation context.
    S topic​(java.lang.String topic)
    Configure the Kafka topic to send messages.
    <P> S topic​(java.util.function.Function<org.springframework.messaging.Message<P>,​java.lang.String> topicFunction)
    Configure a Function that will be invoked at runtime to determine the topic to which a message will be sent.
    S topicExpression​(java.lang.String topicExpression)
    Configure a SpEL expression to determine the Kafka topic at runtime against request Message as a root object of evaluation context.
    S topicExpression​(org.springframework.expression.Expression topicExpression)
    Configure an Expression to determine the Kafka topic at runtime against request Message as a root object of evaluation context.

    Methods inherited from class org.springframework.integration.dsl.IntegrationComponentSpec

    _this, createInstance, destroyInstance, doGet, get, getId, getObjectType, getPhase, id, isAutoStartup, isRunning, start, stop, stop

    Methods inherited from class org.springframework.beans.factory.config.AbstractFactoryBean

    afterPropertiesSet, destroy, getBeanFactory, getBeanTypeConverter, getEarlySingletonInterfaces, getObject, isSingleton, setBeanClassLoader, setBeanFactory, setSingleton

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • topic

      public S topic​(java.lang.String topic)
      Configure the Kafka topic to send messages.
      Parameters:
      topic - the Kafka topic name.
      Returns:
      the spec.

    • topicExpression

      public S topicExpression​(java.lang.String topicExpression)
      Configure a SpEL expression to determine the Kafka topic at runtime against request Message as a root object of evaluation context.
      Parameters:
      topicExpression - the topic SpEL expression.
      Returns:
      the spec.

    • topicExpression

      public S topicExpression​(org.springframework.expression.Expression topicExpression)
      Configure an Expression to determine the Kafka topic at runtime against request Message as a root object of evaluation context.
      Parameters:
      topicExpression - the topic expression.
      Returns:
      the spec.

    • topic

      public <P> S topic​(java.util.function.Function<org.springframework.messaging.Message<P>,​java.lang.String> topicFunction)
      Configure a Function that will be invoked at runtime to determine the topic to which a message will be sent. Typically used with a Java 8 Lambda expression: 
       
 .<Foo>topic(m -> m.getPayload().getTopic())
      Type Parameters:
      P - the expected payload type.
      Parameters:
      topicFunction - the topic function.
      Returns:
      the current KafkaProducerMessageHandlerSpec.
      See Also:
      FunctionExpression

    • messageKeyExpression

      public S messageKeyExpression​(java.lang.String messageKeyExpression)
      Configure a SpEL expression to determine the Kafka message key to store at runtime against request Message as a root object of evaluation context.
      Parameters:
      messageKeyExpression - the message key SpEL expression.
      Returns:
      the spec.

    • messageKey

      public S messageKey​(java.lang.String messageKey)
      Configure the message key to store message in Kafka topic.
      Parameters:
      messageKey - the message key to use.
      Returns:
      the spec.

    • messageKeyExpression

      public S messageKeyExpression​(org.springframework.expression.Expression messageKeyExpression)
      Configure an Expression to determine the Kafka message key to store at runtime against request Message as a root object of evaluation context.
      Parameters:
      messageKeyExpression - the message key expression.
      Returns:
      the spec.

    • messageKey

      public <P> S messageKey​(java.util.function.Function<org.springframework.messaging.Message<P>,​?> messageKeyFunction)
      Configure a Function that will be invoked at runtime to determine the message key under which a message will be stored in the topic. Typically used with a Java 8 Lambda expression: 
       
 .<Foo>messageKey(m -> m.getPayload().getKey())
      Type Parameters:
      P - the expected payload type.
      Parameters:
      messageKeyFunction - the message key function.
      Returns:
      the current KafkaProducerMessageHandlerSpec.
      See Also:
      FunctionExpression

    • partitionId

      public S partitionId​(java.lang.Integer partitionId)
      Configure a partitionId of Kafka topic.
      Parameters:
      partitionId - the partitionId to use.
      Returns:
      the spec.

    • partitionIdExpression

      public S partitionIdExpression​(java.lang.String partitionIdExpression)
      Configure a SpEL expression to determine the topic partitionId at runtime against request Message as a root object of evaluation context.
      Parameters:
      partitionIdExpression - the partitionId expression to use.
      Returns:
      the spec.

    • partitionId

      public <P> S partitionId​(java.util.function.Function<org.springframework.messaging.Message<P>,​java.lang.Integer> partitionIdFunction)
      Configure a Function that will be invoked at runtime to determine the partition id under which a message will be stored in the topic. Typically used with a Java 8 Lambda expression: 
       
 .partitionId(m -> m.getHeaders().get("partitionId", Integer.class))
      Type Parameters:
      P - the expected payload type.
      Parameters:
      partitionIdFunction - the partitionId function.
      Returns:
      the spec.

    • partitionIdExpression

      public S partitionIdExpression​(org.springframework.expression.Expression partitionIdExpression)
      Configure an Expression to determine the topic partitionId at runtime against request Message as a root object of evaluation context.
      Parameters:
      partitionIdExpression - the partitionId expression to use.
      Returns:
      the spec.

    • timestampExpression

      public S timestampExpression​(java.lang.String timestampExpression)
      Configure a SpEL expression to determine the timestamp at runtime against a request Message as a root object of evaluation context.
      Parameters:
      timestampExpression - the timestamp expression to use.
      Returns:
      the spec.

    • timestamp

      public <P> S timestamp​(java.util.function.Function<org.springframework.messaging.Message<P>,​java.lang.Long> timestampFunction)
      Configure a Function that will be invoked at runtime to determine the Kafka record timestamp will be stored in the topic. Typically used with a Java 8 Lambda expression: 
       
 .timestamp(m -> m.getHeaders().get("mytimestamp_header", Long.class))
      Type Parameters:
      P - the expected payload type.
      Parameters:
      timestampFunction - the timestamp function.
      Returns:
      the spec.

    • timestampExpression

      public S timestampExpression​(org.springframework.expression.Expression timestampExpression)
      Configure an Expression to determine the timestamp at runtime against a request Message as a root object of evaluation context.
      Parameters:
      timestampExpression - the timestamp expression to use.
      Returns:
      the spec.

    • flushExpression

      public S flushExpression​(java.lang.String flushExpression)
      Configure a SpEL expression to determine whether or not to flush the producer after a send. By default the producer is flushed if a header kafka_flush has a value Boolean.TRUE.
      Parameters:
      flushExpression - the timestamp expression to use.
      Returns:
      the spec.

    • flush

      public <P> S flush​(java.util.function.Function<org.springframework.messaging.Message<P>,​java.lang.Boolean> flushFunction)
      Configure a Function that will be invoked at runtime to determine whether or not to flush the producer after a send. By default the producer is flushed if a header kafka_flush has a value Boolean.TRUE. Typically used with a Java 8 Lambda expression: 
       
 .flush(m -> m.getPayload().shouldFlush())
      Type Parameters:
      P - the expected payload type.
      Parameters:
      flushFunction - the flush function.
      Returns:
      the spec.

    • flushExpression

      public S flushExpression​(org.springframework.expression.Expression flushExpression)
      Configure an Expression to determine whether or not to flush the producer after a send. By default the producer is flushed if a header kafka_flush has a value Boolean.TRUE.
      Parameters:
      flushExpression - the timestamp expression to use.
      Returns:
      the spec.

    • sync

      public S sync​(boolean sync)
      A boolean indicating if the KafkaProducerMessageHandler should wait for the send operation results or not. Defaults to false. In sync mode a downstream send operation exception will be re-thrown.
      Parameters:
      sync - the send mode; async by default.
      Returns:
      the spec.

    • sendTimeout

      public S sendTimeout​(long sendTimeout)
      Specify a timeout in milliseconds how long KafkaProducerMessageHandler should wait wait for send operation results. Defaults to 10 seconds.
      Parameters:
      sendTimeout - the timeout to wait for result fo send operation.
      Returns:
      the spec.

    • headerMapper

      public S headerMapper​(org.springframework.kafka.support.KafkaHeaderMapper mapper)
      Specify a header mapper to map spring messaging headers to Kafka headers.
      Parameters:
      mapper - the mapper.
      Returns:
      the spec.

    • sendSuccessChannel

      public S sendSuccessChannel​(org.springframework.messaging.MessageChannel sendSuccessChannel)
      Set the channel to which successful send results are sent.
      Parameters:
      sendSuccessChannel - the channel.
      Returns:
      the spec.
      Since:
      3.0.2

    • sendSuccessChannel

      public S sendSuccessChannel​(java.lang.String sendSuccessChannel)
      Set the channel to which successful send results are sent.
      Parameters:
      sendSuccessChannel - the channel name.
      Returns:
      the spec.
      Since:
      3.0.2

    • sendFailureChannel

      public S sendFailureChannel​(org.springframework.messaging.MessageChannel sendFailureChannel)
      Set the channel to which failed send results are sent.
      Parameters:
      sendFailureChannel - the channel.
      Returns:
      the spec.
      Since:
      3.0.2

    • sendFailureChannel

      public S sendFailureChannel​(java.lang.String sendFailureChannel)
      Set the channel to which failed send results are sent.
      Parameters:
      sendFailureChannel - the channel name.
      Returns:
      the spec.
      Since:
      3.0.2

    • futuresChannel

      public S futuresChannel​(org.springframework.messaging.MessageChannel futuresChannel)
      Set the channel to which send futures are sent.
      Parameters:
      futuresChannel - the channel.
      Returns:
      the spec.
      Since:
      5.4

    • futuresChannel

      public S futuresChannel​(java.lang.String futuresChannel)
      Set the channel to which send futures are sent.
      Parameters:
      futuresChannel - the channel name.
      Returns:
      the spec.
      Since:
      5.4