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 org.apache.bookkeeper.proto;
  
  import java.io.IOException;
  import java.util.concurrent.TimeUnit;
  import org.apache.bookkeeper.common.util.MathUtils;
  import org.apache.bookkeeper.proto.BookkeeperProtocol.GetBookieInfoRequest;
  import org.apache.bookkeeper.proto.BookkeeperProtocol.GetBookieInfoResponse;
  import org.apache.bookkeeper.proto.BookkeeperProtocol.Request;
  import org.apache.bookkeeper.proto.BookkeeperProtocol.Response;
  import org.apache.bookkeeper.proto.BookkeeperProtocol.StatusCode;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * A processor class for v3 bookie metadata packets.
   */
  public class GetBookieInfoProcessorV3 extends PacketProcessorBaseV3 implements Runnable {
      private static final Logger LOG = LoggerFactory.getLogger(GetBookieInfoProcessorV3.class);
  
      public GetBookieInfoProcessorV3(Request request, BookieRequestHandler requestHandler,
                                       BookieRequestProcessor requestProcessor) {
          super(request, requestHandler, requestProcessor);
      }
  
      private GetBookieInfoResponse getGetBookieInfoResponse() {
          long startTimeNanos = MathUtils.nowInNano();
          GetBookieInfoRequest getBookieInfoRequest = request.getGetBookieInfoRequest();
          long requested = getBookieInfoRequest.getRequested();
  
          GetBookieInfoResponse.Builder getBookieInfoResponse = GetBookieInfoResponse.newBuilder();
  
          if (!isVersionCompatible()) {
              getBookieInfoResponse.setStatus(StatusCode.EBADVERSION);
              requestProcessor.getRequestStats().getGetBookieInfoStats()
                  .registerFailedEvent(MathUtils.elapsedNanos(startTimeNanos), TimeUnit.NANOSECONDS);
              return getBookieInfoResponse.build();
          }
  
          if (LOG.isDebugEnabled()) {
              LOG.debug("Received new getBookieInfo request: {}", request);
          }
          StatusCode status = StatusCode.EOK;
          long freeDiskSpace = 0L, totalDiskSpace = 0L;
          try {
              if ((requested & GetBookieInfoRequest.Flags.FREE_DISK_SPACE_VALUE) != 0) {
                  freeDiskSpace = requestProcessor.getBookie().getTotalFreeSpace();
                  getBookieInfoResponse.setFreeDiskSpace(freeDiskSpace);
              }
              if ((requested & GetBookieInfoRequest.Flags.TOTAL_DISK_CAPACITY_VALUE) != 0) {
                  totalDiskSpace = requestProcessor.getBookie().getTotalDiskSpace();
                  getBookieInfoResponse.setTotalDiskCapacity(totalDiskSpace);
              }
              if (LOG.isDebugEnabled()) {
                  LOG.debug("FreeDiskSpace info is " + freeDiskSpace + " totalDiskSpace is: " + totalDiskSpace);
              }
              requestProcessor.getRequestStats().getGetBookieInfoStats()
                      .registerSuccessfulEvent(MathUtils.elapsedNanos(startTimeNanos), TimeUnit.NANOSECONDS);
          } catch (IOException e) {
              status = StatusCode.EIO;
              LOG.error("IOException while getting  freespace/totalspace", e);
              requestProcessor.getRequestStats().getGetBookieInfoStats()
                      .registerFailedEvent(MathUtils.elapsedNanos(startTimeNanos), TimeUnit.NANOSECONDS);
          }
  
          getBookieInfoResponse.setStatus(status);
          return getBookieInfoResponse.build();
      }
  
      @Override
      public void run() {
          GetBookieInfoResponse getBookieInfoResponse = getGetBookieInfoResponse();
          sendResponse(getBookieInfoResponse);
      }
  
      private void sendResponse(GetBookieInfoResponse getBookieInfoResponse) {
          Response.Builder response = Response.newBuilder()
                  .setHeader(getHeader())
                  .setStatus(getBookieInfoResponse.getStatus())
                  .setGetBookieInfoResponse(getBookieInfoResponse);
          sendResponse(response.getStatus(),
                       response.build(),
                       requestProcessor.getRequestStats().getGetBookieInfoRequestStats());
      }
  }
  