Class AbstractEventStream

java.lang.Object

com.suse.salt.netapi.event.AbstractEventStream

All Implemented Interfaces:

EventStream, AutoCloseable

Direct Known Subclasses:

WebSocketEventStream

public abstract class AbstractEventStream
extends Object
implements EventStream

Implements basic listener bookkeeping for EventStream.

Field Summary

Fields

Modifier and Type	Field	Description
private final List<EventListener>	listeners	Listeners that are notified of a new events.

Constructor Summary

Constructors

Constructor	Description
AbstractEventStream()

Method Summary

Modifier and Type	Method	Description
void	addEventListener(EventListener listener)	Adds a listener.
protected void	clearListeners(int code, String phrase)	Removes all listeners.
int	getListenerCount()	Helper method that returns the current number of subscribed listeners.
protected void	notifyListeners(Event event)	Notifies all listeners of an event
void	removeEventListener(EventListener listener)	Removes a listener.

Methods inherited from class Object

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

Methods inherited from interface EventStream

close, isEventStreamClosed

Field Details

listeners

private final List<EventListener> listeners

Listeners that are notified of a new events.

Constructor Details

AbstractEventStream

public AbstractEventStream()

Method Details

addEventListener

public void addEventListener(EventListener listener)

Adds a listener.

Specified by:

addEventListener in interface EventStream

Parameters:

listener - Reference to the class that implements EventListener.

removeEventListener

public void removeEventListener(EventListener listener)

Removes a listener.

Specified by:

removeEventListener in interface EventStream

Parameters:

listener - Reference to the class that implements EventListener.

getListenerCount

public int getListenerCount()

Helper method that returns the current number of subscribed listeners.

Specified by:

getListenerCount in interface EventStream

Returns:

The current number listeners.

notifyListeners

protected void notifyListeners(Event event)

Notifies all listeners of an event

Parameters:

event - the event

clearListeners

protected void clearListeners(int code,
 String phrase)

Removes all listeners.

Parameters:

code - an integer code to represent the reason for closing

phrase - a String representation of code