Package com.rabbitmq.client

Class RpcServer.DefaultRpcConsumer

java.lang.Object

com.rabbitmq.client.DefaultConsumer

com.rabbitmq.client.RpcServer.DefaultRpcConsumer

All Implemented Interfaces:

Consumer, RpcServer.RpcConsumer

Enclosing class:

RpcServer

private static class RpcServer.DefaultRpcConsumer
extends DefaultConsumer
implements RpcServer.RpcConsumer

Field Summary

Fields

Modifier and Type	Field	Description
private ConsumerCancelledException	_cancelled
private final BlockingQueue<Delivery>	_queue
private ShutdownSignalException	_shutdown
private static final Delivery	POISON

Constructor Summary

Constructors

Constructor	Description
DefaultRpcConsumer(Channel ch)
DefaultRpcConsumer(Channel ch, BlockingQueue<Delivery> q)

Method Summary

Modifier and Type	Method	Description
private void	checkShutdown()	Check if we are in shutdown mode and if so throw an exception.
private Delivery	handle(Delivery delivery)	If delivery is not POISON nor null, return it.
void	handleCancel(String consumerTag)	No-op implementation of Consumer.handleCancel(String)
void	handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body)	No-op implementation of Consumer.handleDelivery(java.lang.String, com.rabbitmq.client.Envelope, com.rabbitmq.client.AMQP.BasicProperties, byte[]).
void	handleShutdownSignal(String consumerTag, ShutdownSignalException sig)	No-op implementation of Consumer.handleShutdownSignal(java.lang.String, com.rabbitmq.client.ShutdownSignalException).
Delivery	nextDelivery()

Methods inherited from class com.rabbitmq.client.DefaultConsumer

getChannel, getConsumerTag, handleCancelOk, handleConsumeOk, handleRecoverOk

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.rabbitmq.client.Consumer

handleCancelOk, handleConsumeOk, handleRecoverOk

Methods inherited from interface com.rabbitmq.client.RpcServer.RpcConsumer

getConsumerTag

Field Details

POISON

private static final Delivery POISON

_queue

private final BlockingQueue<Delivery> _queue

_shutdown

private volatile ShutdownSignalException _shutdown

_cancelled

private volatile ConsumerCancelledException _cancelled

Constructor Details

DefaultRpcConsumer

public DefaultRpcConsumer(Channel ch)

DefaultRpcConsumer

public DefaultRpcConsumer(Channel ch,
 BlockingQueue<Delivery> q)

Method Details

nextDelivery

public Delivery nextDelivery()
                      throws InterruptedException,
ShutdownSignalException,
ConsumerCancelledException

Specified by:

nextDelivery in interface RpcServer.RpcConsumer

Throws:

InterruptedException

ShutdownSignalException

ConsumerCancelledException

handleShutdownSignal

public void handleShutdownSignal(String consumerTag,
 ShutdownSignalException sig)

Description copied from class: DefaultConsumer

No-op implementation of Consumer.handleShutdownSignal(java.lang.String, com.rabbitmq.client.ShutdownSignalException).

Specified by:

handleShutdownSignal in interface Consumer

Overrides:

handleShutdownSignal in class DefaultConsumer

Parameters:

consumerTag - the consumer tag associated with the consumer

sig - a ShutdownSignalException indicating the reason for the shut down

handleCancel

public void handleCancel(String consumerTag)
                  throws IOException

Description copied from class: DefaultConsumer

No-op implementation of Consumer.handleCancel(String)

Specified by:

handleCancel in interface Consumer

Overrides:

handleCancel in class DefaultConsumer

Parameters:

consumerTag - the defined consumer tag (client- or server-generated)

Throws:

IOException

handleDelivery

public void handleDelivery(String consumerTag,
 Envelope envelope,
 AMQP.BasicProperties properties,
 byte[] body)
                    throws IOException

Description copied from class: DefaultConsumer

No-op implementation of Consumer.handleDelivery(java.lang.String, com.rabbitmq.client.Envelope, com.rabbitmq.client.AMQP.BasicProperties, byte[]).

Specified by:

handleDelivery in interface Consumer

Overrides:

handleDelivery in class DefaultConsumer

Parameters:

consumerTag - the consumer tag associated with the consumer

envelope - packaging data for the message

properties - content header data for the message

body - the message body (opaque, client-specific byte array)

Throws:

IOException - if the consumer encounters an I/O error while processing the message

See Also:

• Envelope

checkShutdown

private void checkShutdown()

Check if we are in shutdown mode and if so throw an exception.

handle

private Delivery handle(Delivery delivery)

If delivery is not POISON nor null, return it.

If delivery, _shutdown and _cancelled are all null, return null.

If delivery is POISON re-insert POISON into the queue and throw an exception if POISONed for no reason.

Otherwise, if we are in shutdown mode or cancelled, throw a corresponding exception.