ru.kiryam.storm.rabbitmq

Class RedeliveryStreamSeparator

java.lang.Object

ru.kiryam.storm.rabbitmq.RedeliveryStreamSeparator

All Implemented Interfaces:

Serializable, MultiStreamSplitter

public class RedeliveryStreamSeparator
extends Object
implements MultiStreamSplitter

Separates initial (first time) deliveries off of a RabbitMQ queue from redeliveries (messages that are being processed after initial processing failed for some reason).

Author:

peter@latent.io

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	INITIAL_DELIVERY_STREAM
static String	REDELIVERY_STREAM

Constructor Summary

Constructors

Constructor and Description
RedeliveryStreamSeparator()

Method Summary

Methods

Modifier and Type	Method and Description
String	selectStream(List<Object> tuple, Message message) Given the tuple (the de-serialized message contents) and the message in its original serialized format, select the stream this particular tuple should be emitted under.
List<String>	streamNames()

Methods inherited from class java.lang.Object

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

Field Detail

INITIAL_DELIVERY_STREAM

public static final String INITIAL_DELIVERY_STREAM

See Also:

Constant Field Values

REDELIVERY_STREAM

public static final String REDELIVERY_STREAM

See Also:

Constant Field Values

Constructor Detail

RedeliveryStreamSeparator

public RedeliveryStreamSeparator()

Method Detail

streamNames

public List<String> streamNames()

Specified by:

streamNames in interface MultiStreamSplitter

Returns:

a list of streams a tuple may be assigned to from this stream splitter

selectStream

public String selectStream(List<Object> tuple,
                  Message message)

Description copied from interface: MultiStreamSplitter

Given the tuple (the de-serialized message contents) and the message in its original serialized format, select the stream this particular tuple should be emitted under.

Specified by:

selectStream in interface MultiStreamSplitter

Parameters:

tuple - the de-serialized form of message as a list of objects (a tuple)

message - the original RabbitMQ message before it was de-serialized (incl. amqp envelope information)

Returns:

the stream assigned to the tuple