org.apache.flink.runtime.clusterframework.messages.SetWorkerPoolSize 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;
/**
* Message sent to the resource master actor to adjust the designated number of
* workers it maintains.
*/
public class SetWorkerPoolSize implements RequiresLeaderSessionID, java.io.Serializable{
private static final long serialVersionUID = -335911350781207609L;
private final int numberOfWorkers;
public SetWorkerPoolSize(int numberOfWorkers) {
if (numberOfWorkers < 0) {
throw new IllegalArgumentException("Number of workers must not be negative.");
}
this.numberOfWorkers = numberOfWorkers;
}
// ------------------------------------------------------------------------
public int numberOfWorkers() {
return numberOfWorkers;
}
// ------------------------------------------------------------------------
@Override
public int hashCode() {
return numberOfWorkers;
}
@Override
public boolean equals(Object obj) {
return obj != null && obj.getClass() == SetWorkerPoolSize.class &&
this.numberOfWorkers == ((SetWorkerPoolSize) obj).numberOfWorkers;
}
@Override
public String toString() {
return "SetWorkerPoolSize (" + numberOfWorkers + ')';
}
}