org.apache.flink.runtime.taskexecutor.slot.TimeoutListener Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.flink.runtime.taskexecutor.slot;
import java.util.UUID;
/**
* Listener for timeout events by the {@link TimerService}.
* @param Type of the timeout key
*/
public interface TimeoutListener {
/**
* Notify the listener about the timeout for an event identified by key. Additionally the method
* is called with the timeout ticket which allows to identify outdated timeout events.
*
* @param key identifying the timed out event
* @param ticket used to check whether the timeout is still valid
*/
void notifyTimeout(K key, UUID ticket);
}