Package 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 Object
implements ShutdownNotifier

A class that manages ShutdownListeners and remembers the reason for a shutdown. Both Channels and Connections have shutdown listeners.

Constructor Summary

Constructors

Constructor	Description
ShutdownNotifierComponent()

Method Summary

Modifier and Type	Method	Description
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.
boolean	setShutdownCauseIfOpen(ShutdownSignalException sse)	Internal: this is the means of registering shutdown.

Methods inherited from class java.lang.Object

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

Constructor Details

ShutdownNotifierComponent

public ShutdownNotifierComponent()

Method Details

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

setShutdownCauseIfOpen

public boolean setShutdownCauseIfOpen(ShutdownSignalException sse)

Internal: this is the means of registering shutdown.

Parameters:

sse - the reason for the shutdown

Returns:

true if the component is open; false otherwise.