text: /*
   *    Copyright (C) 2013 10gen 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.
   */
  
  #include "mongo/db/storage_options.h"
  
  #include "mongo/bson/util/builder.h"
  #include "mongo/db/server_parameters.h"
  
  namespace mongo {
  
      StorageGlobalParams storageGlobalParams;
  
      bool isJournalingEnabled() {
          return storageGlobalParams.dur;
      }
  
      class JournalCommitIntervalSetting : public ServerParameter {
      public:
          JournalCommitIntervalSetting() :
              ServerParameter(ServerParameterSet::getGlobal(), "journalCommitInterval",
                      false, // allowedToChangeAtStartup
                      true // allowedToChangeAtRuntime
                      ) {}
  
          virtual void append(OperationContext* txn, BSONObjBuilder& b, const std::string& name) {
              b << name << storageGlobalParams.journalCommitInterval;
          }
  
          virtual Status set(const BSONElement& newValueElement) {
              long long newValue;
              if (!newValueElement.isNumber()) {
                  StringBuilder sb;
                  sb << "Expected number type for journalCommitInterval via setParameter command: "
                     << newValueElement;
                  return Status(ErrorCodes::BadValue, sb.str());
              }
              if (newValueElement.type() == NumberDouble &&
                  (newValueElement.numberDouble() - newValueElement.numberLong()) > 0) {
                  StringBuilder sb;
                  sb << "journalCommitInterval must be a whole number: "
                     << newValueElement;
                  return Status(ErrorCodes::BadValue, sb.str());
              }
              newValue = newValueElement.numberLong();
              if (newValue <= 1 || newValue >= 500) {
                  StringBuilder sb;
                  sb << "journalCommitInterval must be between 1 and 500, but attempted to set to: "
                     << newValue;
                  return Status(ErrorCodes::BadValue, sb.str());
              }
              storageGlobalParams.journalCommitInterval = static_cast<unsigned>(newValue);
              return Status::OK();
          }
  
          virtual Status setFromString(const std::string& str) {
              unsigned newValue;
              Status status = parseNumberFromString(str, &newValue);
              if (!status.isOK()) {
                  return status;
              }
              if (newValue <= 1 || newValue >= 500) {
                  StringBuilder sb;
                  sb << "journalCommitInterval must be between 1 and 500, but attempted to set to: "
                     << newValue;
                  return Status(ErrorCodes::BadValue, sb.str());
              }
              storageGlobalParams.journalCommitInterval = newValue;
              return Status::OK();
          }
      } journalCommitIntervalSetting;
  
      ExportedServerParameter<bool> NoTableScanSetting(ServerParameterSet::getGlobal(),
                                                       "notablescan",
                                                       &storageGlobalParams.noTableScan,
                                                       true,
                                                       true);
  
      ExportedServerParameter<double> SyncdelaySetting(ServerParameterSet::getGlobal(),
                                                       "syncdelay",
                                                       &storageGlobalParams.syncdelay,
                                                       true,
                                                       true);
  
  } // namespace mongo
  