Package org.springframework.integration.channel

Class ExecutorChannel

java.lang.Object

org.springframework.integration.context.IntegrationObjectSupport

org.springframework.integration.channel.AbstractMessageChannel

org.springframework.integration.channel.AbstractSubscribableChannel

org.springframework.integration.channel.AbstractExecutorChannel

org.springframework.integration.channel.ExecutorChannel

All Implemented Interfaces:

Aware, BeanFactoryAware, BeanNameAware, DisposableBean, InitializingBean, ApplicationContextAware, ExecutorChannelInterceptorAware, ComponentSourceAware, ExpressionCapable, IntegrationPattern, NamedComponent, IntegrationManagement, SubscribableChannelManagement, TrackableComponent, MessageChannel, SubscribableChannel, InterceptableChannel

public class ExecutorChannel
extends AbstractExecutorChannel

An implementation of MessageChannel that delegates to an instance of UnicastingDispatcher which in turn delegates all dispatching invocations to an Executor.

NOTE: unlike DirectChannel, the ExecutorChannel does not support a shared transactional context between sender and handler, because the Executor typically does not block the sender's Thread since it uses another Thread for the dispatch. (SyncTaskExecutor is an exception but would provide no value for this channel. If synchronous dispatching is required, a DirectChannel should be used instead).

Since:

1.0.3

Author:

Mark Fisher, Gary Russell, Artem Bilan

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.integration.channel.AbstractExecutorChannel

AbstractExecutorChannel.MessageHandlingTask

Nested classes/interfaces inherited from class org.springframework.integration.channel.AbstractMessageChannel

AbstractMessageChannel.ChannelInterceptorList

Nested classes/interfaces inherited from interface org.springframework.integration.support.management.IntegrationManagement

IntegrationManagement.ManagementOverrides

Field Summary

Fields inherited from class org.springframework.integration.channel.AbstractExecutorChannel

dispatcher, executor, executorInterceptorsSize, maxSubscribers

Fields inherited from class org.springframework.integration.channel.AbstractMessageChannel

interceptors, meters

Fields inherited from class org.springframework.integration.context.IntegrationObjectSupport

EXPRESSION_PARSER, logger

Fields inherited from interface org.springframework.integration.support.management.IntegrationManagement

METER_PREFIX, RECEIVE_COUNTER_NAME, SEND_TIMER_NAME

Fields inherited from interface org.springframework.messaging.MessageChannel

INDEFINITE_TIMEOUT

Constructor Summary

Constructors

Constructor	Description
ExecutorChannel(Executor executor)	Create an ExecutorChannel that delegates to the provided Executor when dispatching Messages.
ExecutorChannel(Executor executor, LoadBalancingStrategy loadBalancingStrategy)	Create an ExecutorChannel with a LoadBalancingStrategy that delegates to the provided Executor when dispatching Messages.

Method Summary

Modifier and Type	Method	Description
protected UnicastingDispatcher	getDispatcher()
final void	onInit()	Subclasses may implement this for initialization logic.
void	setFailover(boolean failover)	Specify whether the channel's dispatcher should have failover enabled.
void	setFailoverStrategy(Predicate<Exception> failoverStrategy)	Configure a strategy whether the channel's dispatcher should have failover enabled for the exception thrown.

Methods inherited from class org.springframework.integration.channel.AbstractExecutorChannel

addInterceptor, addInterceptor, getIntegrationPatternType, hasExecutorInterceptors, removeInterceptor, removeInterceptor, setInterceptors, setMaxSubscribers

Methods inherited from class org.springframework.integration.channel.AbstractSubscribableChannel

doSend, getSubscriberCount, subscribe, unsubscribe

Methods inherited from class org.springframework.integration.channel.AbstractMessageChannel

destroy, getComponentType, getFullChannelName, getIChannelInterceptorList, getInterceptors, getMetricsCaptor, getOverrides, isLoggingEnabled, isObserved, registerMetricsCaptor, registerObservationRegistry, send, send, setDatatypes, setLoggingEnabled, setMessageConverter, setObservationConvention, setShouldTrack

Methods inherited from class org.springframework.integration.context.IntegrationObjectSupport

afterPropertiesSet, extractTypeIfPossible, generateId, getApplicationContext, getApplicationContextId, getBeanDescription, getBeanFactory, getBeanName, getChannelResolver, getComponentDescription, getComponentName, getComponentSource, getConversionService, getExpression, getIntegrationProperties, getMessageBuilderFactory, getTaskScheduler, isInitialized, setApplicationContext, setBeanFactory, setBeanName, setChannelResolver, setComponentDescription, setComponentName, setComponentSource, setConversionService, setMessageBuilderFactory, setPrimaryExpression, setTaskScheduler, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.integration.support.management.IntegrationManagement

getManagedName, getManagedType, getThisAs, setManagedName, setManagedType

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

getInterceptors

Methods inherited from interface org.springframework.messaging.MessageChannel

send, send

Methods inherited from interface org.springframework.integration.support.context.NamedComponent

getBeanName, getComponentName

Constructor Details

ExecutorChannel

public ExecutorChannel(Executor executor)

Create an ExecutorChannel that delegates to the provided Executor when dispatching Messages.

The Executor must not be null.

Parameters:

executor - The executor.

ExecutorChannel

public ExecutorChannel(Executor executor,
 @Nullable
 LoadBalancingStrategy loadBalancingStrategy)

Create an ExecutorChannel with a LoadBalancingStrategy that delegates to the provided Executor when dispatching Messages.

The Executor must not be null.

Parameters:

executor - The executor.

loadBalancingStrategy - The load balancing strategy implementation.

Method Details

setFailover

public void setFailover(boolean failover)

Specify whether the channel's dispatcher should have failover enabled. By default, it will. Set this value to 'false' to disable it.

Parameters:

failover - The failover boolean.

setFailoverStrategy

public void setFailoverStrategy(Predicate<Exception> failoverStrategy)

Configure a strategy whether the channel's dispatcher should have failover enabled for the exception thrown. Overrides setFailover(boolean) option. In other words: or this, or that option has to be set.

Parameters:

failoverStrategy - The failover boolean.

Since:

6.3

getDispatcher

protected UnicastingDispatcher getDispatcher()

Specified by:

getDispatcher in class AbstractSubscribableChannel

onInit

public final void onInit()

Description copied from class: IntegrationObjectSupport

Subclasses may implement this for initialization logic.

Overrides:

onInit in class AbstractMessageChannel