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 static com.google.common.base.Preconditions.checkArgument;
  
  import java.util.concurrent.TimeUnit;
  import org.apache.bookkeeper.bookie.BookieImpl;
  import org.apache.bookkeeper.common.util.MathUtils;
  import org.apache.bookkeeper.net.BookieId;
  import org.apache.bookkeeper.proto.BookkeeperProtocol.ForceLedgerRequest;
  import org.apache.bookkeeper.proto.BookkeeperProtocol.ForceLedgerResponse;
  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;
  
  
  class ForceLedgerProcessorV3 extends PacketProcessorBaseV3 implements Runnable {
      private static final Logger logger = LoggerFactory.getLogger(ForceLedgerProcessorV3.class);
  
      public ForceLedgerProcessorV3(Request request, BookieRequestHandler requestHandler,
                               BookieRequestProcessor requestProcessor) {
          super(request, requestHandler, requestProcessor);
      }
  
      // Returns null if there is no exception thrown
      private ForceLedgerResponse getForceLedgerResponse() {
          final long startTimeNanos = MathUtils.nowInNano();
          ForceLedgerRequest forceLedgerRequest = request.getForceLedgerRequest();
          long ledgerId = forceLedgerRequest.getLedgerId();
  
          final ForceLedgerResponse.Builder forceLedgerResponse = ForceLedgerResponse.newBuilder().setLedgerId(ledgerId);
  
          if (!isVersionCompatible()) {
              forceLedgerResponse.setStatus(StatusCode.EBADVERSION);
              return forceLedgerResponse.build();
          }
  
          BookkeeperInternalCallbacks.WriteCallback wcb =
                  (int rc, long ledgerId1, long entryId, BookieId addr, Object ctx) -> {
  
              checkArgument(entryId == BookieImpl.METAENTRY_ID_FORCE_LEDGER,
                      "entryId must be METAENTRY_ID_FORCE_LEDGER but was {}", entryId);
  
              checkArgument(ledgerId1 == ledgerId,
                      "ledgerId must be {} but was {}", ledgerId, ledgerId1);
  
              if (BookieProtocol.EOK == rc) {
                  requestProcessor.getRequestStats().getForceLedgerStats()
                          .registerSuccessfulEvent(MathUtils.elapsedNanos(startTimeNanos),
                                  TimeUnit.NANOSECONDS);
              } else {
                  requestProcessor.getRequestStats().getForceLedgerStats()
                          .registerFailedEvent(MathUtils.elapsedNanos(startTimeNanos),
                                  TimeUnit.NANOSECONDS);
              }
  
              StatusCode status;
              switch (rc) {
                  case BookieProtocol.EOK:
                      status = StatusCode.EOK;
                      break;
                  case BookieProtocol.EIO:
                      status = StatusCode.EIO;
                      break;
                  default:
                      status = StatusCode.EUA;
                      break;
              }
              forceLedgerResponse.setStatus(status);
              Response.Builder response = Response.newBuilder()
                      .setHeader(getHeader())
                      .setStatus(forceLedgerResponse.getStatus())
                      .setForceLedgerResponse(forceLedgerResponse);
              Response resp = response.build();
              sendResponse(status, resp, requestProcessor.getRequestStats().getForceLedgerRequestStats());
          };
          StatusCode status = null;
          try {
              requestProcessor.getBookie().forceLedger(ledgerId, wcb, requestHandler);
              status = StatusCode.EOK;
          } catch (Throwable t) {
              logger.error("Unexpected exception while forcing ledger {} : ", ledgerId, t);
              // some bad request which cause unexpected exception
              status = StatusCode.EBADREQ;
          }
  
          // If everything is okay, we return null so that the calling function
          // doesn't return a response back to the caller.
          if (!status.equals(StatusCode.EOK)) {
              forceLedgerResponse.setStatus(status);
              return forceLedgerResponse.build();
          }
          return null;
      }
  
      @Override
      public void run() {
          ForceLedgerResponse forceLedgerResponse = getForceLedgerResponse();
          if (null != forceLedgerResponse) {
              Response.Builder response = Response.newBuilder()
                      .setHeader(getHeader())
                      .setStatus(forceLedgerResponse.getStatus())
                      .setForceLedgerResponse(forceLedgerResponse);
              Response resp = response.build();
              sendResponse(
                  forceLedgerResponse.getStatus(),
                  resp,
                  requestProcessor.getRequestStats().getForceLedgerRequestStats());
          }
      }
  
      /**
       * this toString method filters out body and masterKey from the output.
       * masterKey contains the password of the ledger and body is customer data,
       * so it is not appropriate to have these in logs or system output.
       */
      @Override
      public String toString() {
          return RequestUtils.toSafeString(request);
      }
  }
  
  
  