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.alipay.remoting;
  
  import java.net.InetSocketAddress;
  
  /**
   * Command factory
   * 
   * @author xiaomin.cxm
   * @version $Id: CommandFactory.java, v 0.1 Mar 10, 2016 11:24:24 AM yunliang.shi Exp $
   */
  public interface CommandFactory {
      // ~~~ create request command
  
      /**
       * create a request command with request object
       *
       * @param requestObject the request object included in request command
       * @param <T>
       * @return
       */
      <T extends RemotingCommand> T createRequestCommand(final Object requestObject);
  
      // ~~~ create response command
  
      /**
       * create a normal response with response object
       * @param responseObject
       * @param requestCmd
       * @param <T>
       * @return
       */
      <T extends RemotingCommand> T createResponse(final Object responseObject,
                                                   RemotingCommand requestCmd);
  
      <T extends RemotingCommand> T createExceptionResponse(int id, String errMsg);
  
      <T extends RemotingCommand> T createExceptionResponse(int id, final Throwable t, String errMsg);
  
      <T extends RemotingCommand> T createExceptionResponse(int id, ResponseStatus status);
  
      <T extends RemotingCommand> T createExceptionResponse(int id, ResponseStatus status,
                                                            final Throwable t);
  
      <T extends RemotingCommand> T createTimeoutResponse(final InetSocketAddress address);
  
      <T extends RemotingCommand> T createSendFailedResponse(final InetSocketAddress address,
                                                             Throwable throwable);
  
      <T extends RemotingCommand> T createConnectionClosedResponse(final InetSocketAddress address,
                                                                   String message);
  }
  