ProducerMessage

Type Members

1. sealed trait Envelope[K, V, +PassThrough] extends AnyRef

   

   Type accepted by Producer.commitableSink and Producer.flexiFlow with implementations

   Type accepted by Producer.commitableSink and Producer.flexiFlow with implementations

   - Message publishes a single message to its topic, and continues in the stream as Result

   - MultiMessage publishes all messages in its records field, and continues in the stream as MultiResult

   - PassThroughMessage does not publish anything, and continues in the stream as PassThroughResult

   The passThrough field may hold any element that is passed through the Producer.flexiFlow and included in the Results. That is useful when some context is needed to be passed on downstream operations. That could be done with unzip/zip, but this is more convenient. It can for example be a ConsumerMessage.CommittableOffset or ConsumerMessage.CommittableOffsetBatch that can be committed later in the flow.

2. final case class Message[K, V, +PassThrough](record: ProducerRecord[K, V], passThrough: PassThrough) extends Envelope[K, V, PassThrough] with Product with Serializable

   

   Envelope implementation that produces a single message to a Kafka topic, flows emit a Result for every element processed.

   Envelope implementation that produces a single message to a Kafka topic, flows emit a Result for every element processed.

   The record contains a topic name to which the record is being sent, an optional partition number, and an optional key and value.

   The passThrough field may hold any element that is passed through the Producer.flow and included in the Result. That is useful when some context is needed to be passed on downstream operations. That could be done with unzip/zip, but this is more convenient. It can for example be a ConsumerMessage.CommittableOffset or ConsumerMessage.CommittableOffsetBatch that can be committed later in the flow.

3. final case class MultiMessage[K, V, +PassThrough](records: Seq[ProducerRecord[K, V]], passThrough: PassThrough) extends Envelope[K, V, PassThrough] with Product with Serializable

   

   Envelope implementation that produces multiple message to a Kafka topics, flows emit a MultiResult for every element processed.

   Envelope implementation that produces multiple message to a Kafka topics, flows emit a MultiResult for every element processed.

   Every element in records contains a topic name to which the record is being sent, an optional partition number, and an optional key and value.

   The passThrough field may hold any element that is passed through the Producer.flow and included in the MultiResult. That is useful when some context is needed to be passed on downstream operations. That could be done with unzip/zip, but this is more convenient. It can for example be a ConsumerMessage.CommittableOffset or ConsumerMessage.CommittableOffsetBatch that can be committed later in the flow.

4. final case class MultiResult[K, V, PassThrough] extends Results[K, V, PassThrough] with Product with Serializable

   

   Results implementation emitted when all messages in a MultiMessage have been successfully published.

5. final case class MultiResultPart[K, V] extends Product with Serializable

   

6. final case class PassThroughMessage[K, V, +PassThrough](passThrough: PassThrough) extends Envelope[K, V, PassThrough] with Product with Serializable

   

   Envelope implementation that does not produce anything to Kafka, flows emit a PassThroughResult for every element processed.

   Envelope implementation that does not produce anything to Kafka, flows emit a PassThroughResult for every element processed.

   The passThrough field may hold any element that is passed through the Producer.flow and included in the Results. That is useful when some context is needed to be passed on downstream operations. That could be done with unzip/zip, but this is more convenient. It can for example be a ConsumerMessage.CommittableOffset or ConsumerMessage.CommittableOffsetBatch that can be committed later in the flow.

7. final case class PassThroughResult[K, V, PassThrough] extends Results[K, V, PassThrough] with Product with Serializable

   

   Results implementation emitted when a PassThroughMessage has passed through the flow.

8. final case class Result[K, V, PassThrough] extends Results[K, V, PassThrough] with Product with Serializable

   

   Results implementation emitted when a Message has been successfully published.

   Results implementation emitted when a Message has been successfully published.

   Includes the original message, metadata returned from KafkaProducer and the offset of the produced message.

9. sealed trait Results[K, V, PassThrough] extends AnyRef

   

   Output type produced by Producer.flexiFlow and Transactional.flow.