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
   * <p/>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p/>
   * 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.listeners.requests;
  
  import java.util.Collections;
  import java.util.Set;
  
  import org.apache.ambari.server.AmbariException;
  import org.apache.ambari.server.events.DefaultMessageEmitter;
  import org.apache.ambari.server.events.STOMPEvent;
  import org.apache.ambari.server.events.publishers.STOMPUpdatePublisher;
  import org.springframework.beans.factory.annotation.Autowired;
  
  import com.google.common.eventbus.AllowConcurrentEvents;
  import com.google.common.eventbus.Subscribe;
  import com.google.inject.Injector;
  
  public class STOMPUpdateListener {
  
    @Autowired
    private DefaultMessageEmitter defaultMessageEmitter;
  
    private final Set<STOMPEvent.Type> typesToProcess;
  
    public STOMPUpdateListener(Injector injector, Set<STOMPEvent.Type> typesToProcess) {
      STOMPUpdatePublisher STOMPUpdatePublisher =
        injector.getInstance(STOMPUpdatePublisher.class);
      STOMPUpdatePublisher.registerAgent(this);
      STOMPUpdatePublisher.registerAPI(this);
      this.typesToProcess = typesToProcess == null ? Collections.emptySet() : typesToProcess;
    }
  
    @Subscribe
    @AllowConcurrentEvents
    public void onUpdateEvent(STOMPEvent event) throws AmbariException, InterruptedException {
      if (typesToProcess.contains(event.getType())) {
        defaultMessageEmitter.emitMessage(event);
      }
    }
  }
  