org.apache.flink.runtime.clusterframework.messages.StopClusterSuccessful 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.clusterframework.messages;
import org.apache.flink.runtime.messages.RequiresLeaderSessionID;
/**
* Generic message to signal the cluster listener that the cluster has been shut down.
*/
public class StopClusterSuccessful implements RequiresLeaderSessionID, java.io.Serializable {
private static final long serialVersionUID = 42L;
private static StopClusterSuccessful INSTANCE = new StopClusterSuccessful();
/**
* Private constructor. Initial singleton in get() method.
*/
private StopClusterSuccessful() {}
public static StopClusterSuccessful getInstance() {
return INSTANCE;
}
@Override
public String toString() {
return "StopClusterSuccessful{}";
}
}