content: /*
   * 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.spi.upgrade;
  
  import javax.xml.bind.annotation.XmlEnumValue;
  
  import com.google.gson.annotations.SerializedName;
  
  /**
   * Indicates the type of Upgrade performed.
   */
  public enum UpgradeType {
    /**
     * Services are up the entire time
     */
    @XmlEnumValue("ROLLING")
    @SerializedName("rolling_upgrade")
    ROLLING,
  
    /**
     * All services are stopped, then started
     */
    @XmlEnumValue("NON_ROLLING")
    @SerializedName("nonrolling_upgrade")
    NON_ROLLING,
  
    /**
     * Host-ordered upgrade.
     */
    @XmlEnumValue("HOST_ORDERED")
    @SerializedName("host_ordered_upgrade")
    HOST_ORDERED;
  }
  