com.gemstone.gemfire.internal.cache.tier.sockets.command.GetCQStats Maven / Gradle / Ivy

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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.cache.tier.sockets.command;


import com.gemstone.gemfire.internal.cache.tier.CachedRegionHelper;
import com.gemstone.gemfire.internal.cache.tier.Command;
import com.gemstone.gemfire.internal.cache.tier.MessageType;
import com.gemstone.gemfire.internal.cache.tier.sockets.*;
import com.gemstone.gemfire.cache.query.CqException;
import com.gemstone.gemfire.distributed.internal.DistributionStats;
import com.gemstone.gemfire.cache.query.internal.CqService;
import com.gemstone.gemfire.cache.query.internal.DefaultQueryService;
import java.io.IOException;


public class GetCQStats extends BaseCommand {

  private final static GetCQStats singleton = new GetCQStats();

  public static Command getCommand() {
    return singleton;
  }

  private GetCQStats() {
  }

  @Override
  public void cmdExecute(Message msg, ServerConnection servConn, long start)
      throws IOException {
    CachedRegionHelper crHelper = servConn.getCachedRegionHelper();

    CacheServerStats stats = servConn.getCacheServerStats();

    servConn.setAsTrue(REQUIRES_RESPONSE);
    servConn.setAsTrue(REQUIRES_CHUNKED_RESPONSE);

    if (logger.fineEnabled()) {
      logger.fine(servConn.getName()
          + ": Received close all client CQs request from "
          + servConn.getSocketString());
    }

    // Retrieve the data from the message parts
    String cqName = msg.getPart(0).getString();

    if (logger.fineEnabled()) {
      logger.fine(servConn.getName() + ": Received close CQ request from "
          + servConn.getSocketString() + " cqName: " + cqName);
    }

    // Process the query request
    if (cqName == null) {
      String err = "The cqName for the cq stats request is null";
      sendCqResponse(MessageType.CQDATAERROR_MSG_TYPE, err, msg
          .getTransactionId(), null, servConn);
      return;

    }
    else {
      // Process the cq request
      try {
        // make sure the cqservice has been created
        // since that is what registers the stats
        CqService.getCqService(crHelper.getCache());
      }
      catch (Exception e) {
        String err = "Exception while Getting the CQ Statistics. ";
        sendCqResponse(MessageType.CQ_EXCEPTION_TYPE, err, msg
            .getTransactionId(), e, servConn);
        return;
      }
    }
    // Send OK to client
    sendCqResponse(MessageType.REPLY, "cq stats sent successfully.", msg
        .getTransactionId(), null, servConn);
    servConn.setAsTrue(RESPONDED);

    {
      long oldStart = start;
      start = DistributionStats.getStatTime();
      stats.incProcessGetCqStatsTime(start - oldStart);
    }
  }

}