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 io.jafka.admin;
  
  import java.io.IOException;
  
  import io.jafka.api.CreaterRequest;
  import io.jafka.api.DeleterRequest;
  import io.jafka.common.ErrorMapping;
  import io.jafka.consumer.SimpleOperation;
  import io.jafka.network.Receive;
  import io.jafka.utils.KV;
  import io.jafka.utils.Utils;
  
  /**
   * Some useful tools for server operation
   * @author adyliu (imxylz@gmail.com)
   * @since 1.2
   */
  public class AdminOperation extends SimpleOperation {
  
      public AdminOperation(String host, int port) {
          super(host, port);
      }
  
      /**
       * create partitions in the broker
       * 
       * @param topic topic name
       * @param partitionNum partition numbers
       * @param enlarge enlarge partition number if broker configuration has
       *        setted
       * @return partition number in the broker
       * @throws IOException if an I/O error occurs
       */
      public int createPartitions(String topic, int partitionNum, boolean enlarge) throws IOException {
          KV<Receive, ErrorMapping> response = send(new CreaterRequest(topic, partitionNum, enlarge));
          return Utils.deserializeIntArray(response.k.buffer())[0];
      }
  
      /**
       * delete topic never used
       * 
       * @param topic topic name
       * @param password password
       * @return number of partitions deleted
       * @throws IOException if an I/O error
       */
      public int deleteTopic(String topic, String password) throws IOException {
          KV<Receive, ErrorMapping> response = send(new DeleterRequest(topic, password));
          return Utils.deserializeIntArray(response.k.buffer())[0];
      }
  
  }
  