org.apache.activemq.broker
Class LockableServiceSupport

java.lang.Object
  org.apache.activemq.util.ServiceSupport
      org.apache.activemq.broker.LockableServiceSupport

All Implemented Interfaces:

BrokerServiceAware, Lockable, Service

Direct Known Subclasses:

DataSourceServiceSupport, KahaDBPersistenceAdapter

public abstract class LockableServiceSupport
extends ServiceSupport
implements Lockable, BrokerServiceAware

Helper class for working with services that requires locking

Constructor Summary

LockableServiceSupport()

Method Summary

Locker	getLocker()
ScheduledThreadPoolExecutor	getScheduledThreadPoolExecutor()
abstract void	init() Initialize resources before locking
protected void	keepLockAlive()
void	postStop(ServiceStopper stopper) handle for various operations after stopping the service (like locking)
void	preStart() handle for various operations before starting the service (like locking)
void	setBrokerService(BrokerService brokerService)
void	setLocker(Locker locker) Set locker to be used
void	setLockKeepAlivePeriod(long lockKeepAlivePeriod) Period (in milliseconds) on which Locker.keepAlive() should be checked
void	setUseLock(boolean useLock) Turn locking on/off on the resource
protected void	stopBroker()

Methods inherited from class org.apache.activemq.util.ServiceSupport

addServiceListener, dispose, doStart, doStop, isStarted, isStopped, isStopping, removeServiceListener, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.activemq.broker.Lockable

createDefaultLocker

Constructor Detail

LockableServiceSupport

public LockableServiceSupport()

Method Detail

init

public abstract void init()
                   throws Exception

Initialize resources before locking

Throws:

Exception

setUseLock

public void setUseLock(boolean useLock)

Description copied from interface: Lockable

Turn locking on/off on the resource

Specified by:

setUseLock in interface Lockable

setLocker

public void setLocker(Locker locker)
               throws IOException

Description copied from interface: Lockable

Set locker to be used

Specified by:

setLocker in interface Lockable

Throws:

IOException

getLocker

public Locker getLocker()
                 throws IOException

Throws:

IOException

setLockKeepAlivePeriod

public void setLockKeepAlivePeriod(long lockKeepAlivePeriod)

Description copied from interface: Lockable

Period (in milliseconds) on which Locker.keepAlive() should be checked

Specified by:

setLockKeepAlivePeriod in interface Lockable

preStart

public void preStart()
              throws Exception

Description copied from class: ServiceSupport

handle for various operations before starting the service (like locking)

Overrides:

preStart in class ServiceSupport

Throws:

Exception

postStop

public void postStop(ServiceStopper stopper)
              throws Exception

Description copied from class: ServiceSupport

handle for various operations after stopping the service (like locking)

Overrides:

postStop in class ServiceSupport

Throws:

Exception

keepLockAlive

protected void keepLockAlive()

stopBroker

protected void stopBroker()

getScheduledThreadPoolExecutor

public ScheduledThreadPoolExecutor getScheduledThreadPoolExecutor()

setBrokerService

public void setBrokerService(BrokerService brokerService)

Specified by:

setBrokerService in interface BrokerServiceAware