org.flowable.common.engine.impl.async

Class DefaultAsyncTaskExecutor

java.lang.Object

org.flowable.common.engine.impl.async.DefaultAsyncTaskExecutor

All Implemented Interfaces:

AsyncTaskExecutor

public class DefaultAsyncTaskExecutor
extends Object
implements AsyncTaskExecutor

Author:

Joram Barrez, Tijs Rademakers, Filip Hrisafov

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	allowCoreThreadTimeout Whether or not core threads can time out (which is needed to scale down the threads)
protected int	corePoolSize The minimal number of threads that are kept alive in the threadpool for job execution
protected boolean	executorNeedsShutdown Whether the executor needs a shutdown.
protected ExecutorService	executorService The executor service used for task execution.
protected long	keepAliveTime The time (in milliseconds) a thread used for job execution must be kept alive before it is destroyed.
protected org.slf4j.Logger	logger
protected int	maxPoolSize The maximum number of threads that are kept alive in the threadpool for job execution
protected int	queueSize The size of the queue on which jobs to be executed are placed
protected RejectedExecutionHandler	rejectedExecutionHandler
protected long	secondsToWaitOnShutdown The time (in seconds) that is waited to gracefully shut down the threadpool used for job execution
protected ThreadFactory	threadFactory
protected String	threadPoolNamingPattern
protected BlockingQueue<Runnable>	threadPoolQueue The queue used for job execution work

Constructor Summary

Constructors

Constructor and Description
DefaultAsyncTaskExecutor()

Method Summary

Modifier and Type	Method and Description
void	execute(Runnable task)
int	getCorePoolSize()
long	getKeepAliveTime()
int	getMaxPoolSize()
int	getQueueSize()
RejectedExecutionHandler	getRejectedExecutionHandler()
int	getRemainingCapacity()
long	getSecondsToWaitOnShutdown()
ThreadFactory	getThreadFactory()
String	getThreadPoolNamingPattern()
BlockingQueue<Runnable>	getThreadPoolQueue()
protected ExecutorService	initializeExecutor()
boolean	isAllowCoreThreadTimeout()
void	setAllowCoreThreadTimeout(boolean allowCoreThreadTimeout)
void	setCorePoolSize(int corePoolSize)
void	setKeepAliveTime(long keepAliveTime)
void	setMaxPoolSize(int maxPoolSize)
void	setQueueSize(int queueSize)
void	setRejectedExecutionHandler(RejectedExecutionHandler rejectedExecutionHandler)
void	setSecondsToWaitOnShutdown(long secondsToWaitOnShutdown)
void	setThreadFactory(ThreadFactory threadFactory)
void	setThreadPoolNamingPattern(String threadPoolNamingPattern)
void	setThreadPoolQueue(BlockingQueue<Runnable> threadPoolQueue)
void	shutdown()
void	start()
<T> CompletableFuture<T>	submit(Callable<T> task)
CompletableFuture<?>	submit(Runnable task)

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final org.slf4j.Logger logger

executorService

protected ExecutorService executorService

The executor service used for task execution.

executorNeedsShutdown

protected boolean executorNeedsShutdown

Whether the executor needs a shutdown. This is true if the executor service has not been set from the outside.

corePoolSize

protected int corePoolSize

The minimal number of threads that are kept alive in the threadpool for job execution

maxPoolSize

protected int maxPoolSize

The maximum number of threads that are kept alive in the threadpool for job execution

keepAliveTime

protected long keepAliveTime

The time (in milliseconds) a thread used for job execution must be kept alive before it is destroyed. Default setting is 0. Having a non-default setting of 0 takes resources, but in the case of many job executions it avoids creating new threads all the time.

queueSize

protected int queueSize

The size of the queue on which jobs to be executed are placed

allowCoreThreadTimeout

protected boolean allowCoreThreadTimeout

Whether or not core threads can time out (which is needed to scale down the threads)

secondsToWaitOnShutdown

protected long secondsToWaitOnShutdown

The time (in seconds) that is waited to gracefully shut down the threadpool used for job execution

threadPoolQueue

protected BlockingQueue<Runnable> threadPoolQueue

The queue used for job execution work

threadPoolNamingPattern

protected String threadPoolNamingPattern

threadFactory

protected ThreadFactory threadFactory

rejectedExecutionHandler

protected RejectedExecutionHandler rejectedExecutionHandler

Constructor Detail

DefaultAsyncTaskExecutor

public DefaultAsyncTaskExecutor()

Method Detail

execute

public void execute(Runnable task)

Specified by:

execute in interface AsyncTaskExecutor

submit

public CompletableFuture<?> submit(Runnable task)

Specified by:

submit in interface AsyncTaskExecutor

submit

public <T> CompletableFuture<T> submit(Callable<T> task)

Specified by:

submit in interface AsyncTaskExecutor

start

public void start()

shutdown

public void shutdown()

Specified by:

shutdown in interface AsyncTaskExecutor

initializeExecutor

protected ExecutorService initializeExecutor()

getCorePoolSize

public int getCorePoolSize()

setCorePoolSize

public void setCorePoolSize(int corePoolSize)

getMaxPoolSize

public int getMaxPoolSize()

setMaxPoolSize

public void setMaxPoolSize(int maxPoolSize)

getKeepAliveTime

public long getKeepAliveTime()

setKeepAliveTime

public void setKeepAliveTime(long keepAliveTime)

getQueueSize

public int getQueueSize()

setQueueSize

public void setQueueSize(int queueSize)

isAllowCoreThreadTimeout

public boolean isAllowCoreThreadTimeout()

setAllowCoreThreadTimeout

public void setAllowCoreThreadTimeout(boolean allowCoreThreadTimeout)

getSecondsToWaitOnShutdown

public long getSecondsToWaitOnShutdown()

setSecondsToWaitOnShutdown

public void setSecondsToWaitOnShutdown(long secondsToWaitOnShutdown)

getThreadPoolQueue

public BlockingQueue<Runnable> getThreadPoolQueue()

setThreadPoolQueue

public void setThreadPoolQueue(BlockingQueue<Runnable> threadPoolQueue)

getThreadPoolNamingPattern

public String getThreadPoolNamingPattern()

setThreadPoolNamingPattern

public void setThreadPoolNamingPattern(String threadPoolNamingPattern)

getThreadFactory

public ThreadFactory getThreadFactory()

setThreadFactory

public void setThreadFactory(ThreadFactory threadFactory)

getRejectedExecutionHandler

public RejectedExecutionHandler getRejectedExecutionHandler()

setRejectedExecutionHandler

public void setRejectedExecutionHandler(RejectedExecutionHandler rejectedExecutionHandler)

getRemainingCapacity

public int getRemainingCapacity()

Specified by:

getRemainingCapacity in interface AsyncTaskExecutor