text: /*    Copyright (C) 2014 MongoDB Inc.
   *
   *    This program is free software: you can redistribute it and/or  modify
   *    it under the terms of the GNU Affero General Public License, version 3,
   *    as published by the Free Software Foundation.
   *
   *    This program is distributed in the hope that it will be useful,
   *    but WITHOUT ANY WARRANTY; without even the implied warranty of
   *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *    GNU Affero General Public License for more details.
   *
   *    You should have received a copy of the GNU Affero General Public License
   *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
   *
   *    As a special exception, the copyright holders give permission to link the
   *    code of portions of this program with the OpenSSL library under certain
   *    conditions as described in each individual source file and distribute
   *    linked combinations including the program with the OpenSSL library. You
   *    must comply with the GNU Affero General Public License in all respects for
   *    all of the code used other than as permitted herein. If you modify file(s)
   *    with this exception, you may extend this exception to your version of the
   *    file(s), but you are not obligated to do so. If you do not wish to do so,
   *    delete this exception statement from your version. If you delete this
   *    exception statement from all source files in the program, then also delete
   *    it in the license file.
   */
  
  #pragma once
  
  #include <string>
  
  #include "mongo/db/jsobj.h"
  
  namespace mongo {
  
  class Status;
  
  struct WriteConcernOptions {
  public:
      enum class SyncMode { UNSET, NONE, FSYNC, JOURNAL };
  
      static const int kNoTimeout;
      static const int kNoWaiting;
  
      static const BSONObj Default;
      static const BSONObj Acknowledged;
      static const BSONObj Unacknowledged;
      static const BSONObj Majority;
  
      static const StringData kWriteConcernField;
      static const char kMajority[];  // = "majority"
  
      WriteConcernOptions() {
          reset();
      }
  
      WriteConcernOptions(int numNodes, SyncMode sync, int timeout);
  
      WriteConcernOptions(int numNodes, SyncMode sync, Milliseconds timeout);
  
      WriteConcernOptions(const std::string& mode, SyncMode sync, int timeout);
  
      WriteConcernOptions(const std::string& mode, SyncMode sync, Milliseconds timeout);
  
      Status parse(const BSONObj& obj);
  
      /**
       * Attempts to extract a writeConcern from cmdObj.
       * Verifies that the writeConcern is of type Object (BSON type).
       */
      static StatusWith<WriteConcernOptions> extractWCFromCommand(
          const BSONObj& cmdObj, const WriteConcernOptions& defaultWC = WriteConcernOptions());
  
      /**
       * Return true if the server needs to wait for other secondary nodes to satisfy this
       * write concern setting. Errs on the false positive for non-empty wMode.
       */
      bool shouldWaitForOtherNodes() const;
  
      void reset() {
          syncMode = SyncMode::UNSET;
          wNumNodes = 0;
          wMode = "";
          wTimeout = 0;
      }
  
      // Returns the BSON representation of this object.
      // Warning: does not return the same object passed on the last parse() call.
      BSONObj toBSON() const;
  
      SyncMode syncMode;
  
      // The w parameter for this write concern. The wMode represents the string format and
      // takes precedence over the numeric format wNumNodes.
      int wNumNodes;
      std::string wMode;
  
      // Timeout in milliseconds.
      int wTimeout;
      // Deadline. If this is set to something other than Date_t::max(), this takes precedence over
      // wTimeout.
      Date_t wDeadline = Date_t::max();
  
      // True if the default write concern was used.
      bool usedDefault = false;
  };
  
  }  // namespace mongo
  