Package org.springframework.integration.channel.interceptor

Class WireTap

java.lang.Object

org.springframework.integration.channel.interceptor.WireTap

All Implemented Interfaces:

Aware, BeanFactoryAware, Lifecycle, VetoCapableInterceptor, ManageableLifecycle, ChannelInterceptor

@ManagedResource
public class WireTap
extends Object
implements ChannelInterceptor, ManageableLifecycle, VetoCapableInterceptor, BeanFactoryAware

A ChannelInterceptor that publishes a copy of the intercepted message to a secondary target while still sending the original message to the main channel.

Author:

Mark Fisher, Gary Russell, Artem Bilan

Constructor Summary

Constructors

Constructor	Description
WireTap(String channelName)	Create a new wire tap based on the MessageChannel name and with no MessageSelector.
WireTap(String channelName, MessageSelector selector)	Create a new wire tap with the provided MessageSelector.
WireTap(MessageChannel channel)	Create a new wire tap with no MessageSelector.
WireTap(MessageChannel channel, MessageSelector selector)	Create a new wire tap with the provided MessageSelector.

Method Summary

Modifier and Type	Method	Description
boolean	isRunning()	Check whether the wire tap is currently running.
Message<?>	preSend(Message<?> message, MessageChannel channel)	Intercept the Message and, if accepted by the MessageSelector, send it to the secondary target.
void	setBeanFactory(BeanFactory beanFactory)
void	setTimeout(long timeout)	Specify the timeout value for sending to the intercepting target.
boolean	shouldIntercept(String beanName, InterceptableChannel channel)
void	start()	Restart the wire tap if it has been stopped.
void	stop()	Stop the wire tap.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.messaging.support.ChannelInterceptor

afterReceiveCompletion, afterSendCompletion, postReceive, postSend, preReceive

Constructor Details

WireTap

public WireTap(MessageChannel channel)

Create a new wire tap with no MessageSelector.

Parameters:

channel - the MessageChannel to which intercepted messages will be sent

WireTap

public WireTap(MessageChannel channel,
 MessageSelector selector)

Create a new wire tap with the provided MessageSelector.

Parameters:

channel - the channel to which intercepted messages will be sent

selector - the selector that must accept a message for it to be sent to the intercepting channel

WireTap

public WireTap(String channelName)

Create a new wire tap based on the MessageChannel name and with no MessageSelector.

Parameters:

channelName - the name of the target MessageChannel to which intercepted messages will be sent

Since:

4.3

WireTap

public WireTap(String channelName,
 MessageSelector selector)

Create a new wire tap with the provided MessageSelector.

Parameters:

channelName - the name of the target MessageChannel to which intercepted messages will be sent.

selector - the selector that must accept a message for it to be sent to the intercepting channel

Since:

4.3

Method Details

setTimeout

public void setTimeout(long timeout)

Specify the timeout value for sending to the intercepting target.

Parameters:

timeout - the timeout in milliseconds

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)
                    throws BeansException

Specified by:

setBeanFactory in interface BeanFactoryAware

Throws:

BeansException

isRunning

@ManagedAttribute
public boolean isRunning()

Check whether the wire tap is currently running.

Specified by:

isRunning in interface Lifecycle

Specified by:

isRunning in interface ManageableLifecycle

start

@ManagedOperation
public void start()

Restart the wire tap if it has been stopped. It is running by default.

Specified by:

start in interface Lifecycle

Specified by:

start in interface ManageableLifecycle

stop

@ManagedOperation
public void stop()

Stop the wire tap. To restart, invoke start().

Specified by:

stop in interface Lifecycle

Specified by:

stop in interface ManageableLifecycle

preSend

public Message<?> preSend(Message<?> message,
 MessageChannel channel)

Intercept the Message and, if accepted by the MessageSelector, send it to the secondary target. If this wire tap's MessageSelector is null, it will accept all messages.

Specified by:

preSend in interface ChannelInterceptor

shouldIntercept

public boolean shouldIntercept(String beanName,
 InterceptableChannel channel)

Specified by:

shouldIntercept in interface VetoCapableInterceptor

Parameters:

beanName - The channel name.

channel - The channel that is about to be intercepted.

Returns:

false if the intercept wishes to veto the interception.