Package org.camunda.bpm.client.topic.impl

Class TopicSubscriptionManager

java.lang.Object

org.camunda.bpm.client.topic.impl.TopicSubscriptionManager

All Implemented Interfaces:

java.lang.Runnable

public class TopicSubscriptionManager
extends java.lang.Object
implements java.lang.Runnable

Author:

Tassilo Weidner

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.concurrent.locks.ReentrantLock	ACQUISITION_MONITOR
protected BackoffStrategy	backoffStrategy
protected long	clientLockDuration
protected EngineClient	engineClient
protected java.util.Map<java.lang.String,ExternalTaskHandler>	externalTaskHandlers
protected ExternalTaskServiceImpl	externalTaskService
protected java.util.concurrent.locks.Condition	IS_WAITING
protected java.util.concurrent.atomic.AtomicBoolean	isBackoffStrategyDisabled
protected java.util.concurrent.atomic.AtomicBoolean	isRunning
protected static TopicSubscriptionManagerLogger	LOG
protected java.util.concurrent.CopyOnWriteArrayList<TopicSubscription>	subscriptions
protected java.util.List<TopicRequestDto>	taskTopicRequests
protected java.lang.Thread	thread
protected TypedValues	typedValues

Constructor Summary

Constructors

Constructor	Description
TopicSubscriptionManager(EngineClient engineClient, TypedValues typedValues, long clientLockDuration)

Method Summary

Modifier and Type	Method	Description
protected void	acquire()
void	disableBackoffStrategy()
protected java.util.List<ExternalTask>	fetchAndLock(java.util.List<TopicRequestDto> subscriptions)
EngineClient	getEngineClient()
java.util.List<TopicSubscription>	getSubscriptions()
protected void	handleExternalTask(ExternalTask externalTask, ExternalTaskHandler taskHandler)
boolean	isRunning()
protected void	prepareAcquisition(TopicSubscription subscription)
protected void	resume()
void	run()
protected void	runBackoffStrategy(java.util.List<ExternalTask> externalTasks)
void	setBackoffStrategy(BackoffStrategy backOffStrategy)
void	start()
void	stop()
protected void	subscribe(TopicSubscription subscription)
protected void	suspend(long waitTime)
protected void	unsubscribe(TopicSubscriptionImpl subscription)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final TopicSubscriptionManagerLogger LOG

ACQUISITION_MONITOR

protected java.util.concurrent.locks.ReentrantLock ACQUISITION_MONITOR

IS_WAITING

protected java.util.concurrent.locks.Condition IS_WAITING

isRunning

protected java.util.concurrent.atomic.AtomicBoolean isRunning

externalTaskService

protected ExternalTaskServiceImpl externalTaskService

engineClient

protected EngineClient engineClient

subscriptions

protected java.util.concurrent.CopyOnWriteArrayList<TopicSubscription> subscriptions

taskTopicRequests

protected java.util.List<TopicRequestDto> taskTopicRequests

externalTaskHandlers

protected java.util.Map<java.lang.String,ExternalTaskHandler> externalTaskHandlers

thread

protected java.lang.Thread thread

backoffStrategy

protected BackoffStrategy backoffStrategy

isBackoffStrategyDisabled

protected java.util.concurrent.atomic.AtomicBoolean isBackoffStrategyDisabled

typedValues

protected TypedValues typedValues

clientLockDuration

protected long clientLockDuration

Constructor Detail

TopicSubscriptionManager

public TopicSubscriptionManager(EngineClient engineClient,
                                TypedValues typedValues,
                                long clientLockDuration)

Method Detail

run

public void run()

Specified by:

run in interface java.lang.Runnable

acquire

protected void acquire()

prepareAcquisition

protected void prepareAcquisition(TopicSubscription subscription)

fetchAndLock

protected java.util.List<ExternalTask> fetchAndLock(java.util.List<TopicRequestDto> subscriptions)

handleExternalTask

protected void handleExternalTask(ExternalTask externalTask,
                                  ExternalTaskHandler taskHandler)

stop

public void stop()

start

public void start()

subscribe

protected void subscribe(TopicSubscription subscription)

unsubscribe

protected void unsubscribe(TopicSubscriptionImpl subscription)

getEngineClient

public EngineClient getEngineClient()

getSubscriptions

public java.util.List<TopicSubscription> getSubscriptions()

isRunning

public boolean isRunning()

setBackoffStrategy

public void setBackoffStrategy(BackoffStrategy backOffStrategy)

runBackoffStrategy

protected void runBackoffStrategy(java.util.List<ExternalTask> externalTasks)

suspend

protected void suspend(long waitTime)

resume

protected void resume()

disableBackoffStrategy

public void disableBackoffStrategy()