public abstract class AbstractCorrelatingMessageHandler extends AbstractMessageProducingHandler implements DiscardingMessageHandler, DisposableBean, ApplicationEventPublisherAware
MessageStore. This class takes care of correlated groups of messages
that can be completed in batches. It is useful for custom implementation of
MessageHandlers that require correlation and is used as a base class for Aggregator -
AggregatingMessageHandler and Resequencer - ResequencingMessageHandler,
or custom implementations requiring correlation.
To customize this handler inject CorrelationStrategy,
ReleaseStrategy, and MessageGroupProcessor implementations as
you require.
By default the CorrelationStrategy will be a
HeaderAttributeCorrelationStrategy and the ReleaseStrategy will be a
SequenceSizeReleaseStrategy.
| Modifier and Type | Class and Description |
|---|---|
protected static class |
AbstractCorrelatingMessageHandler.SequenceAwareMessageGroup |
| Modifier and Type | Field and Description |
|---|---|
protected org.apache.commons.logging.Log |
logger |
messagingTemplateEXPRESSION_PARSERHIGHEST_PRECEDENCE, LOWEST_PRECEDENCE| Constructor and Description |
|---|
AbstractCorrelatingMessageHandler(MessageGroupProcessor processor) |
AbstractCorrelatingMessageHandler(MessageGroupProcessor processor,
MessageGroupStore store) |
AbstractCorrelatingMessageHandler(MessageGroupProcessor processor,
MessageGroupStore store,
CorrelationStrategy correlationStrategy,
ReleaseStrategy releaseStrategy) |
| Modifier and Type | Method and Description |
|---|---|
protected abstract void |
afterRelease(MessageGroup group,
Collection<Message<?>> completedMessages)
Allows you to provide additional logic that needs to be performed after the MessageGroup was released.
|
protected void |
afterRelease(MessageGroup group,
Collection<Message<?>> completedMessages,
boolean timeout)
Subclasses may override if special action is needed because the group was released or discarded
due to a timeout.
|
protected Collection<Message<?>> |
completeGroup(Message<?> message,
Object correlationKey,
MessageGroup group) |
protected void |
completeGroup(Object correlationKey,
MessageGroup group) |
void |
destroy() |
protected void |
expireGroup(Object correlationKey,
MessageGroup group) |
protected int |
findLastReleasedSequenceNumber(Object groupId,
Collection<Message<?>> partialSequence) |
protected void |
forceComplete(MessageGroup group) |
String |
getComponentType()
Subclasses may implement this method to provide component type information.
|
protected CorrelationStrategy |
getCorrelationStrategy() |
MessageChannel |
getDiscardChannel()
Return the discard channel.
|
protected String |
getDiscardChannelName() |
protected EvaluationContext |
getEvaluationContext() |
protected Map<UUID,ScheduledFuture<?>> |
getExpireGroupScheduledFutures() |
protected Expression |
getGroupTimeoutExpression() |
protected LockRegistry |
getLockRegistry() |
MessageGroupStore |
getMessageStore() |
protected long |
getMinimumTimeoutForEmptyGroups() |
protected MessageGroupProcessor |
getOutputProcessor() |
protected ReleaseStrategy |
getReleaseStrategy() |
protected void |
handleMessageInternal(Message<?> message) |
protected boolean |
isExpireGroupsUponCompletion() |
protected boolean |
isLockRegistrySet() |
protected boolean |
isReleasePartialSequences() |
protected boolean |
isSendPartialResultOnExpiry() |
protected boolean |
isSequenceAware() |
protected Long |
obtainGroupTimeout(MessageGroup group) |
protected void |
onInit()
Subclasses may implement this for initialization logic.
|
void |
setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) |
void |
setCorrelationStrategy(CorrelationStrategy correlationStrategy) |
void |
setDiscardChannel(MessageChannel discardChannel) |
void |
setDiscardChannelName(String discardChannelName) |
void |
setExpireGroupsUponTimeout(boolean expireGroupsUponTimeout)
Expire (completely remove) a group if it is completed due to timeout.
|
void |
setForceReleaseAdviceChain(List<Advice> forceReleaseAdviceChain) |
void |
setGroupTimeoutExpression(Expression groupTimeoutExpression) |
void |
setLockRegistry(LockRegistry lockRegistry) |
void |
setMessageStore(MessageGroupStore store) |
void |
setMinimumTimeoutForEmptyGroups(long minimumTimeoutForEmptyGroups)
By default, when a MessageGroupStoreReaper is configured to expire partial
groups, empty groups are also removed.
|
void |
setOutputProcessor(MessageGroupProcessor outputProcessor)
Specify a
MessageGroupProcessor for the output function. |
void |
setReleasePartialSequences(boolean releasePartialSequences)
Set
releasePartialSequences on an underlying default
SequenceSizeReleaseStrategy. |
void |
setReleaseStrategy(ReleaseStrategy releaseStrategy) |
void |
setSendPartialResultOnExpiry(boolean sendPartialResultOnExpiry) |
void |
setTaskScheduler(TaskScheduler taskScheduler) |
protected MessageGroup |
store(Object correlationKey,
Message<?> message) |
protected void |
verifyResultCollectionConsistsOfMessages(Collection<?> elements) |
createOutputMessage, getOutputChannel, isAsync, produceOutput, resolveErrorChannel, sendErrorMessage, sendOutput, sendOutputs, setAsync, setOutputChannel, setOutputChannelName, setSendTimeout, shouldCopyRequestHeaders, shouldSplitOutputconfigureMetrics, getActiveCount, getActiveCountLong, getDuration, getErrorCount, getErrorCountLong, getHandleCount, getHandleCountLong, getManagedName, getManagedType, getMaxDuration, getMeanDuration, getMinDuration, getOrder, getStandardDeviationDuration, handleMessage, isCountsEnabled, isLoggingEnabled, isStatsEnabled, onComplete, onError, onNext, onSubscribe, reset, setCountsEnabled, setLoggingEnabled, setManagedName, setManagedType, setOrder, setShouldTrack, setStatsEnabledafterPropertiesSet, extractTypeIfPossible, getApplicationContext, getApplicationContextId, getBeanFactory, getChannelResolver, getComponentName, getConversionService, getExpression, getIntegrationProperties, getIntegrationProperty, getMessageBuilderFactory, getTaskScheduler, setApplicationContext, setBeanFactory, setBeanName, setChannelResolver, setComponentName, setConversionService, setMessageBuilderFactory, setPrimaryExpression, toStringclone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waithandleMessagegetComponentNamepublic AbstractCorrelatingMessageHandler(MessageGroupProcessor processor, MessageGroupStore store, CorrelationStrategy correlationStrategy, ReleaseStrategy releaseStrategy)
public AbstractCorrelatingMessageHandler(MessageGroupProcessor processor, MessageGroupStore store)
public AbstractCorrelatingMessageHandler(MessageGroupProcessor processor)
public void setLockRegistry(LockRegistry lockRegistry)
public final void setMessageStore(MessageGroupStore store)
public void setCorrelationStrategy(CorrelationStrategy correlationStrategy)
public void setReleaseStrategy(ReleaseStrategy releaseStrategy)
public void setGroupTimeoutExpression(Expression groupTimeoutExpression)
public void setForceReleaseAdviceChain(List<Advice> forceReleaseAdviceChain)
public void setOutputProcessor(MessageGroupProcessor outputProcessor)
MessageGroupProcessor for the output function.outputProcessor - the MessageGroupProcessor to usepublic void setTaskScheduler(TaskScheduler taskScheduler)
setTaskScheduler in class IntegrationObjectSupportpublic void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher)
setApplicationEventPublisher in interface ApplicationEventPublisherAwareprotected void onInit()
throws Exception
IntegrationObjectSupportonInit in class AbstractMessageProducingHandlerException - Any exception.public void setDiscardChannel(MessageChannel discardChannel)
public void setDiscardChannelName(String discardChannelName)
public void setSendPartialResultOnExpiry(boolean sendPartialResultOnExpiry)
public void setMinimumTimeoutForEmptyGroups(long minimumTimeoutForEmptyGroups)
minimumTimeoutForEmptyGroups - The minimum timeout.public void setReleasePartialSequences(boolean releasePartialSequences)
releasePartialSequences on an underlying default
SequenceSizeReleaseStrategy. Ignored for other release strategies.releasePartialSequences - true to allow release.public void setExpireGroupsUponTimeout(boolean expireGroupsUponTimeout)
expireGroupsUponTimeout - the expireGroupsUponTimeout to setpublic String getComponentType()
IntegrationObjectSupportgetComponentType in interface NamedComponentgetComponentType in class AbstractMessageHandlerpublic MessageGroupStore getMessageStore()
protected Map<UUID,ScheduledFuture<?>> getExpireGroupScheduledFutures()
protected MessageGroupProcessor getOutputProcessor()
protected CorrelationStrategy getCorrelationStrategy()
protected ReleaseStrategy getReleaseStrategy()
public MessageChannel getDiscardChannel()
DiscardingMessageHandlergetDiscardChannel in interface DiscardingMessageHandlerprotected String getDiscardChannelName()
protected boolean isSendPartialResultOnExpiry()
protected boolean isSequenceAware()
protected LockRegistry getLockRegistry()
protected boolean isLockRegistrySet()
protected long getMinimumTimeoutForEmptyGroups()
protected boolean isReleasePartialSequences()
protected Expression getGroupTimeoutExpression()
protected EvaluationContext getEvaluationContext()
protected void handleMessageInternal(Message<?> message) throws Exception
handleMessageInternal in class AbstractMessageHandlerExceptionprotected boolean isExpireGroupsUponCompletion()
protected abstract void afterRelease(MessageGroup group, Collection<Message<?>> completedMessages)
group - The group.completedMessages - The completed messages.protected void afterRelease(MessageGroup group, Collection<Message<?>> completedMessages, boolean timeout)
afterRelease(MessageGroup, Collection) is invoked.group - The group.completedMessages - The completed messages.timeout - True if the release/discard was due to a timeout.protected void forceComplete(MessageGroup group)
protected int findLastReleasedSequenceNumber(Object groupId, Collection<Message<?>> partialSequence)
protected MessageGroup store(Object correlationKey, Message<?> message)
protected void expireGroup(Object correlationKey, MessageGroup group)
protected void completeGroup(Object correlationKey, MessageGroup group)
protected Collection<Message<?>> completeGroup(Message<?> message, Object correlationKey, MessageGroup group)
protected void verifyResultCollectionConsistsOfMessages(Collection<?> elements)
protected Long obtainGroupTimeout(MessageGroup group)
public void destroy()
throws Exception
destroy in interface DisposableBeanException