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.asterix.external.feed.watch;
  
  import java.util.Set;
  
  import org.apache.asterix.active.ActiveEvent;
  import org.apache.asterix.active.ActivityState;
  import org.apache.asterix.active.IActiveEntityEventsListener;
  
  public class WaitForStateSubscriber extends AbstractSubscriber {
  
      private final Set<ActivityState> targetStates;
  
      public WaitForStateSubscriber(IActiveEntityEventsListener listener, Set<ActivityState> targetStates) {
          super(listener, listener);
          this.targetStates = targetStates;
          listener.subscribe(this);
      }
  
      @Override
      public void notify(ActiveEvent event) {
          if (targetStates.contains(listener.getState())) {
              complete(listener.getJobFailure());
          } else if (event != null && event.getEventKind() == ActiveEvent.Kind.FAILURE) {
              complete((Exception) event.getEventObject());
          }
      }
  
      @Override
      public void subscribed(IActiveEntityEventsListener eventsListener) {
          if (targetStates.contains(listener.getState())) {
              complete(null);
          }
      }
  }
  