com.cloudhopper.commons.util.windowing.WindowListener Maven / Gradle / Ivy
package com.cloudhopper.commons.util.windowing;
/*
* #%L
* ch-commons-util
* %%
* Copyright (C) 2012 Cloudhopper by Twitter
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
/**
* Interface for listening to events triggered by a window.
*
* @author joelauer (twitter: @jjlauer or http://twitter.com/jjlauer)
*/
public interface WindowListener {
/**
* Called when a future has been automatically expired by a window in its
* internal monitoring task. Since the thread that will call this method
* is potentially shared by any window in the JVM, it's best to handle this
* event as quickly as possible.
* @param future The future that expired based on its ExpireTimestamp
*/
public void expired(WindowFuture future);
}