org.apache.beam.sdk.io.rabbitmq

Class RabbitMqIO.Write

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<RabbitMqMessage>,PCollection<?>>

org.apache.beam.sdk.io.rabbitmq.RabbitMqIO.Write

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

Enclosing class:

RabbitMqIO

public abstract static class RabbitMqIO.Write
extends PTransform<PCollection<RabbitMqMessage>,PCollection<?>>

A PTransform to publish messages to a RabbitMQ server.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.beam.sdk.transforms.PTransform

annotations, displayData, name, resourceHints

Constructor Summary

Constructors

Constructor and Description
Write()

Method Summary

Modifier and Type	Method and Description
PCollection<?>	expand(PCollection<RabbitMqMessage> input) Override this method to specify how this PTransform should be expanded on the given InputT.
RabbitMqIO.Write	withExchange(java.lang.String exchange) Defines the existing exchange where the messages will be sent.
RabbitMqIO.Write	withExchange(java.lang.String exchange, java.lang.String exchangeType) Defines the to-be-declared exchange where the messages will be sent.
RabbitMqIO.Write	withQueue(java.lang.String queue) Defines the queue where the messages will be sent.
RabbitMqIO.Write	withQueueDeclare(boolean queueDeclare) If the queue is not declared by another application, RabbitMqIO can declare the queue itself.
RabbitMqIO.Write	withUri(java.lang.String uri)

Methods inherited from class org.apache.beam.sdk.transforms.PTransform

addAnnotation, compose, compose, getAdditionalInputs, getAnnotations, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setDisplayData, setResourceHints, toString, validate, validate

Methods inherited from class java.lang.Object

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

Constructor Detail

Write

public Write()

Method Detail

withUri

public RabbitMqIO.Write withUri(java.lang.String uri)

withExchange

public RabbitMqIO.Write withExchange(java.lang.String exchange,
                                     java.lang.String exchangeType)

Defines the to-be-declared exchange where the messages will be sent. By defining the exchange via this function, RabbitMqIO will be responsible for declaring this exchange, and will declare it as non-durable. If an exchange with this name already exists but is non-durable or of a different type, the declaration will fail.

By calling this function exchangeDeclare will be set to true.

To publish to an existing exchange, use withExchange(String)

withExchange

public RabbitMqIO.Write withExchange(java.lang.String exchange)

Defines the existing exchange where the messages will be sent.

By calling this function exchangeDeclare will be set to false

withQueue

public RabbitMqIO.Write withQueue(java.lang.String queue)

Defines the queue where the messages will be sent. The queue has to be declared. It can be done by another application or by RabbitMqIO if you set withQueueDeclare(boolean) to true.

withQueueDeclare

public RabbitMqIO.Write withQueueDeclare(boolean queueDeclare)

If the queue is not declared by another application, RabbitMqIO can declare the queue itself.

Parameters:

queueDeclare - true to declare the queue, false else.

expand

public PCollection<?> expand(PCollection<RabbitMqMessage> input)

Description copied from class: PTransform

Override this method to specify how this PTransform should be expanded on the given InputT.

NOTE: This method should not be called directly. Instead apply the PTransform should be applied to the InputT using the apply method.

Composite transforms, which are defined in terms of other transforms, should return the output of one of the composed transforms. Non-composite transforms, which do not apply any transforms internally, should return a new unbound output and register evaluators (via backend-specific registration methods).

Specified by:

expand in class PTransform<PCollection<RabbitMqMessage>,PCollection<?>>