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 com.alibaba.jstorm.elasticsearch.common;
  
  import java.io.Serializable;
  import java.net.InetAddress;
  import java.net.UnknownHostException;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.elasticsearch.common.settings.Settings;
  import org.elasticsearch.common.transport.InetSocketTransportAddress;
  import org.elasticsearch.common.transport.TransportAddress;
  
  import com.google.common.base.Preconditions;
  import com.google.common.collect.Lists;
  
  public class EsConfig implements Serializable {
    
    private static final long serialVersionUID = 946576929049344226L;
    
    private static final String SEPARATER = ",";
    private static final String DELIMITER = ":";
  
    private final String clusterName;
    private final String[] nodes;
    private final Map<String, String> additionalConfiguration;
  
    public EsConfig(String clusterName, String nodes) {
      this(clusterName, nodes, Collections.<String, String> emptyMap());
    }
  
    public EsConfig(String clusterName, String nodes,
        Map<String, String> additionalConfiguration) {
      this.clusterName = clusterName;
      this.nodes = splitNodes(nodes);
      this.additionalConfiguration = new HashMap<String, String>(
          additionalConfiguration);
      checkArguments();
    }
  
    private String[] splitNodes(String nodesString) {
      String[] nodes = nodesString.split(SEPARATER);
      return nodes;
    }
  
    private void checkArguments() {
      Preconditions.checkNotNull(clusterName);
      Preconditions.checkNotNull(additionalConfiguration);
      Preconditions.checkNotNull(nodes);
      Preconditions.checkArgument(nodes.length != 0, "Nodes cannot be empty");
    }
  
    List<TransportAddress> getTransportAddresses() throws UnknownHostException {
      List<TransportAddress> transportAddresses = Lists.newArrayList();
      for (String node : nodes) {
        String[] hostAndPort = node.split(DELIMITER);
        Preconditions.checkArgument(hostAndPort.length == 2,
            "Incorrect node format");
        String host = hostAndPort[0];
        int port = Integer.parseInt(hostAndPort[1]);
        InetSocketTransportAddress inetSocketTransportAddress = new InetSocketTransportAddress(
            InetAddress.getByName(host), port);
        transportAddresses.add(inetSocketTransportAddress);
      }
      return transportAddresses;
    }
  
    Settings getSettings() {
      return Settings.builder().put("cluster.name", clusterName)
          .put(additionalConfiguration).build();
    }
  
  }
  