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.
   */
  
  #define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding
  
  #include "mongo/platform/basic.h"
  
  #include "mongo/s/catalog/dist_lock_manager_mock.h"
  
  #include <algorithm>
  
  #include "mongo/unittest/unittest.h"
  #include "mongo/util/mongoutils/str.h"
  #include "mongo/util/time_support.h"
  
  namespace mongo {
  
  namespace {
  
  void NoLockFuncSet(StringData name,
                     StringData whyMessage,
                     Milliseconds waitFor,
                     Milliseconds lockTryInterval) {
      FAIL(str::stream() << "Lock not expected to be called. "
                         << "Name: "
                         << name
                         << ", whyMessage: "
                         << whyMessage
                         << ", waitFor: "
                         << waitFor
                         << ", lockTryInterval: "
                         << lockTryInterval);
  }
  
  }  // namespace
  
  DistLockManagerMock::DistLockManagerMock()
      : _lockReturnStatus{Status::OK()}, _lockChecker{NoLockFuncSet} {}
  
  void DistLockManagerMock::startUp() {}
  
  void DistLockManagerMock::shutDown(OperationContext* txn) {
      uassert(28659, "DistLockManagerMock shut down with outstanding locks present", _locks.empty());
  }
  
  std::string DistLockManagerMock::getProcessID() {
      return "Mock dist lock manager process id";
  }
  
  StatusWith<DistLockManager::ScopedDistLock> DistLockManagerMock::lock(
      OperationContext* txn,
      StringData name,
      StringData whyMessage,
      Milliseconds waitFor,
      Milliseconds lockTryInterval) {
      return lockWithSessionID(
          txn, name, whyMessage, DistLockHandle::gen(), waitFor, lockTryInterval);
  }
  
  StatusWith<DistLockManager::ScopedDistLock> DistLockManagerMock::lockWithSessionID(
      OperationContext* txn,
      StringData name,
      StringData whyMessage,
      const OID lockSessionID,
      Milliseconds waitFor,
      Milliseconds lockTryInterval) {
      _lockChecker(name, whyMessage, waitFor, lockTryInterval);
      _lockChecker = NoLockFuncSet;
  
      if (!_lockReturnStatus.isOK()) {
          return _lockReturnStatus;
      }
  
      if (_locks.end() != std::find_if(_locks.begin(), _locks.end(), [name](LockInfo info) -> bool {
              return info.name == name;
          })) {
          return Status(ErrorCodes::LockBusy,
                        str::stream() << "Lock \"" << name << "\" is already taken");
      }
  
      LockInfo info;
      info.name = name.toString();
      info.lockID = lockSessionID;
      _locks.push_back(info);
  
      return DistLockManager::ScopedDistLock(nullptr, info.lockID, this);
  }
  
  void DistLockManagerMock::unlockAll(OperationContext* txn, const std::string& processID) {
      fassertFailed(34366);  // Not implemented for the mock
  }
  
  void DistLockManagerMock::unlock(OperationContext* txn, const DistLockHandle& lockHandle) {
      std::vector<LockInfo>::iterator it =
          std::find_if(_locks.begin(), _locks.end(), [&lockHandle](LockInfo info) -> bool {
              return info.lockID == lockHandle;
          });
      if (it == _locks.end()) {
          return;
      }
      _locks.erase(it);
  }
  
  Status DistLockManagerMock::checkStatus(OperationContext* txn, const DistLockHandle& lockHandle) {
      return Status::OK();
  }
  
  void DistLockManagerMock::expectLock(LockFunc checker, Status status) {
      _lockReturnStatus = std::move(status);
      _lockChecker = checker;
  }
  }
  