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.server.events;
  
  import java.util.Set;
  
  /**
   * The {@link HostsAddedEvent} is fired when the hosts are added to a cluster.
   */
  public class HostsAddedEvent extends ClusterEvent {
  
    /**
     * The hosts' names.
     */
    protected final Set<String> m_hostNames;
  
    /**
     * Constructor.
     * @param clusterId
     * @param hostNames
     */
    public HostsAddedEvent(long clusterId, Set<String> hostNames) {
      super(AmbariEventType.HOST_ADDED, clusterId);
      m_hostNames = hostNames;
    }
  
    /**
     * Gets the hosts' names that the event belongs to.
     *
     * @return the hostName
     */
    public Set<String> getHostNames() {
      return m_hostNames;
    }
  }
  