org.ow2.orchestra.pvm.internal.jobexecutor
Class AbstractJobExecutor

java.lang.Object
  org.ow2.orchestra.pvm.internal.jobexecutor.AbstractJobExecutor

All Implemented Interfaces:

JobExecutor

Direct Known Subclasses:

JdkJobExecutor, PvmJobExecutor

public abstract class AbstractJobExecutor
extends Object
implements JobExecutor

Common part of jobExecutor implementations based on a Dispatcher thread

Author:

Tom Baeyens, Guillaume Porcher

Field Summary

protected Command<Collection<Collection<JobImpl<?>>>>	acquireJobsCommand
protected CommandService	commandService
protected DeadJobHandler	deadJobHandler
protected int	idleMillis
protected boolean	isActive
protected boolean	limitSameInstanceJobs
protected int	lockMillis
protected static Log	LOG
protected String	name
protected Command<Date>	nextDueDateCommand

Constructor Summary

AbstractJobExecutor()

Method Summary

Command<Collection<Collection<JobImpl<?>>>>	getAcquireJobsCommand()
protected abstract int	getAcquireJobSize()
CommandService	getCommandExecutor()
DeadJobHandler	getDeadJobHandler()
protected abstract AbstractDispatcherThread	getDispatcherThread()
protected static String	getHostName()
int	getIdleMillis()
int	getLockMillis()
String	getName() returns JobExecutor name
Command<Date>	getNextDueDateCommand()
boolean	isActive() returns true if this JobExecutor is started
boolean	isLimitSameInstanceJobs()
void	jobWasAdded() signals jobExecutor that a job has been added
void	setCommandExecutor(CommandService commandExecutor)
void	setDeadJobHandler(DeadJobHandler deadJobHandler)
void	setIdleInterval(int idleInterval)
void	setLimitSameInstanceJobs(boolean limitSameInstanceJobs)
void	setMaxLockTime(int maxLockTime)
void	setName(String name)
abstract void	start() starts the DispatcherThread and org.ow2.orchestra.pvm.internal.jobexecutor.pvm.JobExecutorThreads for this jobImpl executor
abstract void	stop() stops with join set to false.
abstract void	stop(boolean join) signals to all threads managed by this jobImpl executor to stop.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final Log LOG

commandService

protected CommandService commandService

name

protected String name

idleMillis

protected int idleMillis

lockMillis

protected int lockMillis

acquireJobsCommand

protected Command<Collection<Collection<JobImpl<?>>>> acquireJobsCommand

nextDueDateCommand

protected Command<Date> nextDueDateCommand

isActive

protected boolean isActive

limitSameInstanceJobs

protected boolean limitSameInstanceJobs

deadJobHandler

protected DeadJobHandler deadJobHandler

Constructor Detail

AbstractJobExecutor

public AbstractJobExecutor()

Method Detail

stop

public abstract void stop(boolean join)

Description copied from interface: JobExecutor

signals to all threads managed by this jobImpl executor to stop. Stopping the dispatcher thread is blocking till the dispatcher is no more alive. If join is set to true, this method will block until all jobImpl executor threads are joined and actually dead. If join is false, the jobImpl executor threads are only told to stop, without waiting till they are actually stopped. It may be that jobImpl executor threads are in the middle of executing a jobImpl and they may finish after this method returned.

Specified by:

stop in interface JobExecutor

stop

public abstract void stop()

Description copied from interface: JobExecutor

stops with join set to false.

Specified by:

stop in interface JobExecutor

See Also:

JobExecutor.stop(boolean)

start

public abstract void start()

Description copied from interface: JobExecutor

starts the DispatcherThread and org.ow2.orchestra.pvm.internal.jobexecutor.pvm.JobExecutorThreads for this jobImpl executor

Specified by:

start in interface JobExecutor

getHostName

protected static String getHostName()

jobWasAdded

public void jobWasAdded()

Description copied from interface: JobExecutor

signals jobExecutor that a job has been added

Specified by:

jobWasAdded in interface JobExecutor

getName

public String getName()

Description copied from interface: JobExecutor

returns JobExecutor name

Specified by:

getName in interface JobExecutor

getIdleMillis

public int getIdleMillis()

isActive

public boolean isActive()

Description copied from interface: JobExecutor

returns true if this JobExecutor is started

Specified by:

isActive in interface JobExecutor

getLockMillis

public int getLockMillis()

getCommandExecutor

public CommandService getCommandExecutor()

getAcquireJobsCommand

public Command<Collection<Collection<JobImpl<?>>>> getAcquireJobsCommand()

getNextDueDateCommand

public Command<Date> getNextDueDateCommand()

setCommandExecutor

public void setCommandExecutor(CommandService commandExecutor)

setName

public void setName(String name)

setIdleInterval

public void setIdleInterval(int idleInterval)

setMaxLockTime

public void setMaxLockTime(int maxLockTime)

getDeadJobHandler

public DeadJobHandler getDeadJobHandler()

Specified by:

getDeadJobHandler in interface JobExecutor

Returns:

the handler to execute when a job has no retries left.

setDeadJobHandler

public void setDeadJobHandler(DeadJobHandler deadJobHandler)

Parameters:

deadJobHandler - the deadJobHandler to set

setLimitSameInstanceJobs

public void setLimitSameInstanceJobs(boolean limitSameInstanceJobs)

Parameters:

limitSameInstanceJobs - the limitSameInstanceJobs to set

isLimitSameInstanceJobs

public boolean isLimitSameInstanceJobs()

Returns:

the limitSameInstanceJobs

getDispatcherThread

protected abstract AbstractDispatcherThread getDispatcherThread()

getAcquireJobSize

protected abstract int getAcquireJobSize()