com.rabbitmq.client.impl
Class ShutdownNotifierComponent

java.lang.Object
  com.rabbitmq.client.impl.ShutdownNotifierComponent

All Implemented Interfaces:

ShutdownNotifier

Direct Known Subclasses:

AMQChannel, AMQConnection

public class ShutdownNotifierComponent
extends java.lang.Object
implements ShutdownNotifier

Field Summary

ShutdownSignalException	_shutdownCause When this value is null, the component is in an "open" state.
java.util.List<ShutdownListener>	listeners List of all shutdown listeners associated with the component

Constructor Summary

ShutdownNotifierComponent()

Method Summary

void	addShutdownListener(ShutdownListener listener) Add shutdown listener.
ShutdownSignalException	getCloseReason() Get the shutdown reason object
boolean	isOpen() Determine whether the component is currently open.
void	notifyListeners() Protected API - notify the listeners attached to the component
void	removeShutdownListener(ShutdownListener listener) Remove shutdown listener for the component.

Methods inherited from class java.lang.Object

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

Field Detail

listeners

public java.util.List<ShutdownListener> listeners

List of all shutdown listeners associated with the component

_shutdownCause

public volatile ShutdownSignalException _shutdownCause

When this value is null, the component is in an "open" state. When non-null, the component is in "closed" state, and this value indicates the circumstances of the shutdown.

Constructor Detail

ShutdownNotifierComponent

public ShutdownNotifierComponent()

Method Detail

addShutdownListener

public void addShutdownListener(ShutdownListener listener)

Description copied from interface: ShutdownNotifier

Add shutdown listener. If the component is already closed, handler is fired immediately

Specified by:

addShutdownListener in interface ShutdownNotifier

Parameters:

listener - ShutdownListener to the component

getCloseReason

public ShutdownSignalException getCloseReason()

Description copied from interface: ShutdownNotifier

Get the shutdown reason object

Specified by:

getCloseReason in interface ShutdownNotifier

Returns:

ShutdownSignalException if component is closed, null otherwise

notifyListeners

public void notifyListeners()

Description copied from interface: ShutdownNotifier

Protected API - notify the listeners attached to the component

Specified by:

notifyListeners in interface ShutdownNotifier

See Also:

ShutdownListener

removeShutdownListener

public void removeShutdownListener(ShutdownListener listener)

Description copied from interface: ShutdownNotifier

Remove shutdown listener for the component.

Specified by:

removeShutdownListener in interface ShutdownNotifier

Parameters:

listener - ShutdownListener to be removed

isOpen

public boolean isOpen()

Description copied from interface: ShutdownNotifier

Determine whether the component is currently open. Will return false if we are currently closing. Checking this method should be only for information, because of the race conditions - state can change after the call. Instead just execute and try to catch ShutdownSignalException and IOException

Specified by:

isOpen in interface ShutdownNotifier

Returns:

true when component is open, false otherwise