/*
    *  Copyright 2010 Felix Roethenbacher
    *
    *  Licensed 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 ch.syabru.nagios.broker.impl;
  
  import java.util.ArrayList;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import ch.syabru.nagios.broker.MessageListener;
  import ch.syabru.nagios.broker.MessageListenerManager;
  
  /**
   * Message listener manager implementation.
   *
   * @author Felix Roethenbacher
   *
   */
  public class MessageListenerManagerImpl implements MessageListenerManager {
      private final Logger logger = LoggerFactory.getLogger(
              MessageListenerManagerImpl.class);
  
      private ArrayList<MessageListener> failedListeners =
          new ArrayList<MessageListener>();
  
      @Override
      public void addForReconnect(MessageListener listener) {
          synchronized (failedListeners) {
              failedListeners.add(listener);
          }
      }
  
      @Override
      public void reconnect() {
          ArrayList<MessageListener> listeners = new ArrayList<MessageListener>();
          synchronized (failedListeners) {
              listeners.addAll(failedListeners);
              failedListeners.clear();
          }
          for (MessageListener listener : listeners) {
              logger.info("Retry registering message listener [{}]",
                      listener.getId());
              listener.registerListener();
          }
      }
  
  }