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/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * Licensed 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. See accompanying
 * LICENSE file.
 */
package com.gemstone.gemfire.internal.memcached.commands;

import java.nio.ByteBuffer;

import com.gemstone.gemfire.cache.Cache;
import com.gemstone.gemfire.internal.memcached.Reply;
import com.gemstone.gemfire.internal.memcached.RequestReader;
import com.gemstone.gemfire.memcached.GemFireMemcachedServer.Protocol;

/**
 * This command is currently no-op.

 * 
 * The command "stats" is used to query the server about statistics it
 * maintains and other internal data. It has two forms. Without
 * arguments:
 * 
 * stats\r\n
 * it causes the server to output general-purpose statistics
 * 
 * @author Swapnil Bawaskar
 *
 */
public class StatsCommand extends AbstractCommand {

  @Override
  public ByteBuffer processCommand(RequestReader request, Protocol protocol, Cache cache) {
    if (protocol == Protocol.ASCII) {
      return asciiCharset.encode(Reply.END.toString());
    }
    request.getRequest().position(HEADER_LENGTH);
    return request.getResponse();
  }

}