ceph/src/rocksdb/include/rocksdb/utilities/ldb_cmd_execute_result.h

   1 //  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
   2 //  This source code is licensed under the BSD-style license found in the
   3 //  LICENSE file in the root directory of this source tree. An additional grant
   4 //  of patent rights can be found in the PATENTS file in the same directory.
   5 //
   6 #pragma once
   7
   8 #ifdef FAILED
   9 #undef FAILED
  10 #endif
  11
  12 namespace rocksdb {
  13
  14 class LDBCommandExecuteResult {
  15 public:
  16   enum State {
  17     EXEC_NOT_STARTED = 0, EXEC_SUCCEED = 1, EXEC_FAILED = 2,
  18   };
  19
  20   LDBCommandExecuteResult() : state_(EXEC_NOT_STARTED), message_("") {}
  21
  22   LDBCommandExecuteResult(State state, std::string& msg) :
  23     state_(state), message_(msg) {}
  24
  25   std::string ToString() {
  26     std::string ret;
  27     switch (state_) {
  28     case EXEC_SUCCEED:
  29       break;
  30     case EXEC_FAILED:
  31       ret.append("Failed: ");
  32       break;
  33     case EXEC_NOT_STARTED:
  34       ret.append("Not started: ");
  35     }
  36     if (!message_.empty()) {
  37       ret.append(message_);
  38     }
  39     return ret;
  40   }
  41
  42   void Reset() {
  43     state_ = EXEC_NOT_STARTED;
  44     message_ = "";
  45   }
  46
  47   bool IsSucceed() {
  48     return state_ == EXEC_SUCCEED;
  49   }
  50
  51   bool IsNotStarted() {
  52     return state_ == EXEC_NOT_STARTED;
  53   }
  54
  55   bool IsFailed() {
  56     return state_ == EXEC_FAILED;
  57   }
  58
  59   static LDBCommandExecuteResult Succeed(std::string msg) {
  60     return LDBCommandExecuteResult(EXEC_SUCCEED, msg);
  61   }
  62
  63   static LDBCommandExecuteResult Failed(std::string msg) {
  64     return LDBCommandExecuteResult(EXEC_FAILED, msg);
  65   }
  66
  67 private:
  68   State state_;
  69   std::string message_;
  70
  71   bool operator==(const LDBCommandExecuteResult&);
  72   bool operator!=(const LDBCommandExecuteResult&);
  73 };
  74
  75 }