/**
* 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.hadoop.yarn.server.applicationhistoryservice.metrics
.loadsimulator.data;
/**
* AppId is a helper class that encapsulates the common part of metrics message.
* It contains hostName, appId and instanceId. It is immutable,
* and it can not hold null values.
*/
public final class ApplicationInstance {
private final transient String hostName;
private final transient AppID appId;
private final transient String instanceId;
/**
* @param hostname
* @param appId
* @param instanceId
*/
public ApplicationInstance(String hostname, AppID appId, String instanceId) {
if (hostname == null || appId == null || instanceId == null)
throw new IllegalArgumentException("ApplicationInstance can not be " +
"instantiated with null values");
this.hostName = hostname;
this.appId = appId;
this.instanceId = instanceId;
}
public String getInstanceId() {
return instanceId;
}
public AppID getAppId() {
return appId;
}
public String getHostName() {
return hostName;
}
}