/**
* 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.ambari.server.state.stack.upgrade;
import javax.xml.bind.annotation.XmlEnum;
import javax.xml.bind.annotation.XmlEnumValue;
/**
* The {@link ExecuteHostType} enum is used to represent where an
* {@link ExecuteTask} will run.
*/
@XmlEnum
public enum ExecuteHostType {
/**
* The term "master" can mean something unique to each service. In terms of
* where to run, this means calculate which is the "master" component and run
* it on that.
*/
@XmlEnumValue("master")
MASTER,
/**
* Run on a single host that satifies the condition of the {@link ExecuteTask}
* .
*/
@XmlEnumValue("any")
ANY,
/**
* Run on a single host that is picked by alphabetically sorting all hosts that satisfy the condition of the {@link ExecuteTask}
* .
*/
@XmlEnumValue("first")
FIRST,
/**
* Run on all of the hosts.
*/
@XmlEnumValue("all")
ALL;
}