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.notifications;
  
  import java.util.List;
  
  /**
   * The {@link DispatchCallback} interface is used by an {@link NotificationDispatcher} to
   * callback to an interested party when a {@link Notification} delivery is
   * attempted.
   * <p/>
   * This class can be used to let the caller know the success or failure status
   * of the outbound {@link Notification}.
   */
  public interface DispatchCallback {
  
    /**
     * Invoked when a {@link Notification} was successfully dispatched.
     *
     * @param callbackIds
     *          a list of unique IDs that the caller can use to identify the
     *          {@link Notification} that was dispatched.
     */
    void onSuccess(List<String> callbackIds);
  
    /**
     * Invoked when a {@link Notification} failed to be dispatched.
     * 
     * @param callbackIds
     *          a list of unique IDs that the caller can use to identify the
     *          {@link Notification} that was dispatched.
     */
    void onFailure(List<String> callbackIds);
  
  }
  