Package org.springframework.kafka.retrytopic

Class DeadLetterPublishingRecovererFactory

java.lang.Object
org.springframework.kafka.retrytopic.DeadLetterPublishingRecovererFactory
public class DeadLetterPublishingRecovererFactory extends Object
Creates and configures the DeadLetterPublishingRecoverer that will be used to forward the messages using the DestinationTopicResolver.
Since:
2.7
Author:
Tomaz Fernandes, Gary Russell

  • Constructor Details

    • DeadLetterPublishingRecovererFactory

      public DeadLetterPublishingRecovererFactory(DestinationTopicResolver destinationTopicResolver)

  • Method Details

    • setHeadersFunction

      public void setHeadersFunction(BiFunction<org.apache.kafka.clients.consumer.ConsumerRecord<?,?>,Exception,org.apache.kafka.common.header.Headers> headersFunction)
      Set a function that creates additional headers for the output record, in addition to the standard retry headers added by this factory.
      Parameters:
      headersFunction - the function.
      Since:
      2.8.4

    • setPartitionResolver

      public void setPartitionResolver(BiFunction<org.apache.kafka.clients.consumer.ConsumerRecord<?,?>,String,Integer> resolver)
      Set a resolver for the partition number to publish to. By default the same partition as the consumer record is used. If the resolver returns null or a negative number, the partition is set to null in the producer record and the KafkaProducer decides which partition to publish to.
      Parameters:
      resolver - the resolver.
      Since:
      2.9.2

    • addNotRetryableException

      public final void addNotRetryableException(Class<? extends Exception> exceptionType)
      Add exception type to the default list. By default, the following exceptions will not be retried: All others will be retried.
      Parameters:
      exceptionType - the exception type.
      Since:
      2.8
      See Also:

    • removeNotRetryableException

      public boolean removeNotRetryableException(Class<? extends Exception> exceptionType)
      Remove an exception type from the configured list. By default, the following exceptions will not be retried: All others will be retried.
      Parameters:
      exceptionType - the exception type.
      Returns:
      true if the removal was successful.
      See Also:

    • neverLogListenerException

      public void neverLogListenerException()
      Never logs the listener exception. The default is logging only after retries are exhausted.
      Since:
      2.7.13

    • alwaysLogListenerException

      public void alwaysLogListenerException()
      Logs the listener exception at each attempt. The default is logging only after retries are exhausted.
      Since:
      2.7.13

    • create

      public DeadLetterPublishingRecoverer create()

    • setDeadLetterPublishingRecovererCustomizer

      public void setDeadLetterPublishingRecovererCustomizer(Consumer<DeadLetterPublishingRecoverer> customizer)

    • resolveTopicPartition

      protected org.apache.kafka.common.TopicPartition resolveTopicPartition(org.apache.kafka.clients.consumer.ConsumerRecord<?,?> cr, DestinationTopic nextDestination)
      Creates and returns the TopicPartition, where the original record should be forwarded. By default, it will use the partition same as original record's partition, in the next destination topic.

      DeadLetterPublishingRecoverer.checkPartition(org.apache.kafka.common.TopicPartition, org.apache.kafka.clients.consumer.Consumer<?, ?>) has logic to check whether that partition exists, and if it doesn't it sets -1, to allow the Producer itself to assign a partition to the record.

      Subclasses can inherit from this method to override the implementation, if necessary.

      The destination partition can also be customized using setPartitionResolver(BiFunction).
      Parameters:
      cr - The original ConsumerRecord, which is to be forwarded to DLT
      nextDestination - The next DestinationTopic, where the consumerRecord is to be forwarded
      Returns:
      An instance of TopicPartition, specifying the topic and partition, where the cr is to be sent.
      See Also: