text: /**
   *    Copyright (C) 2015 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.
   */
  
  #include "mongo/platform/basic.h"
  
  #include "mongo/db/commands.h"
  #include "mongo/util/net/sock.h"
  
  namespace mongo {
  namespace {
  
      class IsDbGridCmd : public Command {
      public:
          IsDbGridCmd() : Command("isdbgrid") { }
  
          virtual bool isWriteCommandForConfigServer() const {
              return false;
          }
  
          virtual bool slaveOk() const {
              return true;
          }
  
          virtual void addRequiredPrivileges(const std::string& dbname,
                                             const BSONObj& cmdObj,
                                             std::vector<Privilege>* out) {
  
              // No auth required
          }
  
          virtual bool run(OperationContext* txn,
                           const std::string& dbname,
                           BSONObj& cmdObj,
                           int options,
                           std::string& errmsg,
                           BSONObjBuilder& result) {
  
              result.append("isdbgrid", 1);
              result.append("hostname", getHostNameCached());
              return true;
          }
  
      } isdbGrid;
  
  } // namespace
  } // namespace mongo
  