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.camel.component.zookeeper;
  
  import org.apache.zookeeper.ZooKeeper;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * <code>ZookeeperConnectionManager</code> is a simple class to manage {@link ZooKeeper} connections.
   */
  public class ZooKeeperConnectionManager {
  
      private static final Logger LOG = LoggerFactory.getLogger(ZooKeeperConnectionManager.class);
  
      private ZookeeperConnectionStrategy strategy;
  
      public ZooKeeperConnectionManager(ZooKeeperEndpoint endpoint) {
          strategy = new DefaultZookeeperConnectionStrategy(endpoint);
      }
  
      public ZooKeeper getConnection() {
          return strategy.getConnection().getZooKeeper();
      }
  
      private interface ZookeeperConnectionStrategy {
          ConnectionHolder getConnection();
  
          void shutdown();
      }
  
      private static class DefaultZookeeperConnectionStrategy implements ZookeeperConnectionStrategy {
          private ConnectionHolder holder;
          private ZooKeeperConfiguration configuration;
  
          DefaultZookeeperConnectionStrategy(ZooKeeperEndpoint endpoint) {
              this.configuration = endpoint.getConfiguration();
              LOG.debug("Creating connection to ZooKeeper: {}", configuration);
              holder = new ConnectionHolder(configuration);
          }
  
          @Override
          public ConnectionHolder getConnection() {
              return holder;
          }
  
          @Override
          public void shutdown() {
              LOG.debug("Shutting down connection to ZooKeeper: {}", configuration);
              holder.closeConnection();
          }
      }
  
      public void shutdown() {
          strategy.shutdown();
      }
  
  }
  