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.apex.malhar.contrib.elasticsearch;
  
  import java.io.IOException;
  
  import javax.validation.constraints.NotNull;
  
  import org.elasticsearch.client.transport.TransportClient;
  import org.elasticsearch.common.transport.InetSocketTransportAddress;
  
  import org.apache.apex.malhar.lib.db.Connectable;
  
  /**
   * Elastic search base connector which has basic information for an operator <br>
   * Properties:<br>
   * <b>hostname</b>:the host name of the elastic search cluster node to connect to, not null<br>
   * <b>port</b>:port number of the elastic search cluster node to connect to, not null<br>
   * <b>client</b>:created when connected to elastic search cluster node <br>
   * Compile time checks:<br>
   * None<br>
   * <br>
   * Run time checks:<br>
   * hostName batchSize <br>
   * <b>data type:</br>the insertion data can support all the Objects mongoDB supports<br>
   *
   * <b>Benchmarks</b>: <br>
   *
   * @since 2.1.0
   * */
  
  public class ElasticSearchConnectable implements Connectable
  {
    @NotNull
    protected String hostName;
    @NotNull
    protected int port;
  
    protected transient TransportClient client;
  
    /**
     * @return the hostname
     */
    public String getHostName()
    {
      return hostName;
    }
  
    /**
     * @param hostname
     *          the hostname to set
     */
    public void setHostName(String hostname)
    {
      this.hostName = hostname;
    }
  
    /**
     * @return the port
     */
    public int getPort()
    {
      return port;
    }
  
    /**
     * @param port
     *          the port to set
     */
    public void setPort(int port)
    {
      this.port = port;
    }
  
    /*
     * (non-Javadoc)
     *
     * @see org.apache.apex.malhar.lib.db.Connectable#connect()
     */
    @Override
    public void connect() throws IOException
    {
      client = new TransportClient();
      client.addTransportAddress(new InetSocketTransportAddress(hostName, port));
    }
  
    /*
     * (non-Javadoc)
     *
     * @see org.apache.apex.malhar.lib.db.Connectable#disconnect()
     */
    @Override
    public void disconnect() throws IOException
    {
      if (client != null) {
        client.close();
      }
    }
  
    /*
     * (non-Javadoc)
     *
     * @see org.apache.apex.malhar.lib.db.Connectable#isConnected()
     */
    @Override
    public boolean isConnected()
    {
      if (client != null) {
        return client.connectedNodes().size() != 0;
      }
      return false;
    }
  
  }
  