org.apache.camel.impl

Class DefaultServicePool<Key,Service>

java.lang.Object

org.apache.camel.support.ServiceSupport

org.apache.camel.impl.DefaultServicePool<Key,Service>

All Implemented Interfaces:

Service, ShutdownableService, ServicePool<Key,Service>, StatefulService, SuspendableService

Direct Known Subclasses:

DefaultProducerServicePool

public abstract class DefaultServicePool<Key,Service>
extends ServiceSupport
implements ServicePool<Key,Service>

Default implementation to inherit for a basic service pool.

Version:

Field Summary

Fields

Modifier and Type	Field and Description
protected int	capacity
protected org.slf4j.Logger	log
protected ConcurrentMap<Key,BlockingQueue<Service>>	pool

Fields inherited from class org.apache.camel.support.ServiceSupport

shutdown, shuttingdown, started, starting, stopped, stopping, suspended, suspending

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DefaultServicePool()
	DefaultServicePool(int capacity)

Method Summary

Methods

Modifier and Type	Method and Description
Service	acquire(Key key) Tries to acquire the service with the given key
Service	addAndAcquire(Key key, Service service) Adds the given service to the pool and acquires it.
protected void	doStart() Implementations override this method to support customized start/stop.
protected void	doStop() Implementations override this method to support customized start/stop.
int	getCapacity() Gets the capacity per key.
void	purge() Purges the pool.
void	release(Key key, Service service) Releases the service back to the pool
void	setCapacity(int capacity) Sets the capacity, which is capacity per key.
int	size() Returns the current size of the pool

Methods inherited from class org.apache.camel.support.ServiceSupport

doResume, doShutdown, doSuspend, getStatus, getVersion, isRunAllowed, isStarted, isStarting, isStopped, isStopping, isStoppingOrStopped, isSuspended, isSuspending, resume, shutdown, start, stop, suspend

Methods inherited from class java.lang.Object

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

Field Detail

log

protected final org.slf4j.Logger log

pool

protected final ConcurrentMap<Key,BlockingQueue<Service>> pool

capacity

protected int capacity

Constructor Detail

DefaultServicePool

protected DefaultServicePool()

DefaultServicePool

public DefaultServicePool(int capacity)

Method Detail

getCapacity

public int getCapacity()

Description copied from interface: ServicePool

Gets the capacity per key.

Specified by:

getCapacity in interface ServicePool<Key,Service>

Returns:

the capacity per key

setCapacity

public void setCapacity(int capacity)

Description copied from interface: ServicePool

Sets the capacity, which is capacity per key.

Specified by:

setCapacity in interface ServicePool<Key,Service>

Parameters:

capacity - the capacity per key

size

public int size()

Description copied from interface: ServicePool

Returns the current size of the pool

Specified by:

size in interface ServicePool<Key,Service>

Returns:

the current size of the pool

addAndAcquire

public Service addAndAcquire(Key key,
                    Service service)

Description copied from interface: ServicePool

Adds the given service to the pool and acquires it.

Specified by:

addAndAcquire in interface ServicePool<Key,Service>

Parameters:

key - the key

service - the service

Returns:

the acquired service, is newer null

acquire

public Service acquire(Key key)

Description copied from interface: ServicePool

Tries to acquire the service with the given key

Specified by:

acquire in interface ServicePool<Key,Service>

Parameters:

key - the key

Returns:

the acquired service, or null if no free in pool

release

public void release(Key key,
           Service service)

Description copied from interface: ServicePool

Releases the service back to the pool

Specified by:

release in interface ServicePool<Key,Service>

Parameters:

key - the key

service - the service

purge

public void purge()

Description copied from interface: ServicePool

Purges the pool.

Specified by:

purge in interface ServicePool<Key,Service>

doStart

protected void doStart()
                throws Exception

Description copied from class: ServiceSupport

Implementations override this method to support customized start/stop.

Important: See ServiceSupport.doStop() for more details.

Specified by:

doStart in class ServiceSupport

Throws:

Exception

See Also:

ServiceSupport.doStop()

doStop

protected void doStop()
               throws Exception

Description copied from class: ServiceSupport

Implementations override this method to support customized start/stop.

Important: Camel will invoke this ServiceSupport.doStop() method when the service is being stopped. This method will also be invoked if the service is still in uninitialized state (eg has not been started). The method is always called to allow the service to do custom logic when the service is being stopped, such as when CamelContext is shutting down.

Specified by:

doStop in class ServiceSupport

Throws:

Exception

See Also:

ServiceSupport.doStart()