Package org.apache.pulsar.reactive.client.api

Interface ReactiveMessagePipelineBuilder<T>

Type Parameters:

T - the message payload type

All Known Subinterfaces:

ReactiveMessagePipelineBuilder.ConcurrentOneByOneMessagePipelineBuilder<T>, ReactiveMessagePipelineBuilder.OneByOneMessagePipelineBuilder<T>

public interface ReactiveMessagePipelineBuilder<T>

Builder interface for ReactiveMessagePipeline.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	ReactiveMessagePipelineBuilder.ConcurrentOneByOneMessagePipelineBuilder<T>	Builder interface for a pipeline that handles messages with concurrent one-by-one messages handlers.
static interface	ReactiveMessagePipelineBuilder.OneByOneMessagePipelineBuilder<T>	Builder interface for a pipeline that handles messages one-by-one.

Method Summary

Modifier and Type	Method	Description
ReactiveMessagePipeline	build()	Builds the pipeline instance.
ReactiveMessagePipelineBuilder.OneByOneMessagePipelineBuilder<T>	messageHandler(Function<org.apache.pulsar.client.api.Message<T>,org.reactivestreams.Publisher<Void>> messageHandler)	Sets a handler function that processes messages one-by-one.
ReactiveMessagePipelineBuilder<T>	pipelineRetrySpec(reactor.util.retry.Retry pipelineRetrySpec)	Sets a retry spec that will be used in case of failures in the pipeline.
ReactiveMessagePipelineBuilder<T>	streamingMessageHandler(Function<reactor.core.publisher.Flux<org.apache.pulsar.client.api.Message<T>>,org.reactivestreams.Publisher<MessageResult<Void>>> streamingMessageHandler)	Sets a handler function that processes the stream of messages.
ReactiveMessagePipelineBuilder<T>	transformPipeline(Function<reactor.core.publisher.Mono<Void>,org.reactivestreams.Publisher<Void>> transformer)	Sets a transform function that can be used to customize the pipeline.

Method Details

messageHandler

ReactiveMessagePipelineBuilder.OneByOneMessagePipelineBuilder<T> messageHandler(Function<org.apache.pulsar.client.api.Message<T>,org.reactivestreams.Publisher<Void>> messageHandler)

Sets a handler function that processes messages one-by-one.

Parameters:

messageHandler - a function that takes a message as input and returns an empty Publisher

Returns:

a builder for the pipeline handling messages one-by-one

streamingMessageHandler

ReactiveMessagePipelineBuilder<T> streamingMessageHandler(Function<reactor.core.publisher.Flux<org.apache.pulsar.client.api.Message<T>>,org.reactivestreams.Publisher<MessageResult<Void>>> streamingMessageHandler)

Sets a handler function that processes the stream of messages.

Parameters:

streamingMessageHandler - a function that takes a stream of messages as input and returns a MessageResult that contains the acknowledgement or negative acknowledgement value of the processing.

Returns:

the pipeline builder instance

transformPipeline

ReactiveMessagePipelineBuilder<T> transformPipeline(Function<reactor.core.publisher.Mono<Void>,org.reactivestreams.Publisher<Void>> transformer)

Sets a transform function that can be used to customize the pipeline.

Parameters:

transformer - a transform function

Returns:

the pipeline builder instance

See Also:

• Mono.transform(Function)

pipelineRetrySpec

ReactiveMessagePipelineBuilder<T> pipelineRetrySpec(reactor.util.retry.Retry pipelineRetrySpec)

Sets a retry spec that will be used in case of failures in the pipeline. The default is to retry indefinitely with an exponential backoff.

Parameters:

pipelineRetrySpec - the retry spec

Returns:

the pipeline builder instance

See Also:

• Mono.retryWhen(Retry)

build

ReactiveMessagePipeline build()

Builds the pipeline instance.

Returns:

the pipeline instance