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 both the GPLv2 (found in the
   3 //  COPYING file in the root directory) and Apache 2.0 License
   4 //  (found in the LICENSE.Apache file in the root directory).
   5 //
   6 #pragma once
   7
   8 #include <string>
   9
  10 #include "rocksdb/rocksdb_namespace.h"
  11
  12 #ifdef FAILED
  13 #undef FAILED
  14 #endif
  15
  16 namespace ROCKSDB_NAMESPACE {
  17
  18 class LDBCommandExecuteResult {
  19  public:
  20   enum State {
  21     EXEC_NOT_STARTED = 0,
  22     EXEC_SUCCEED = 1,
  23     EXEC_FAILED = 2,
  24   };
  25
  26   LDBCommandExecuteResult() : state_(EXEC_NOT_STARTED), message_("") {}
  27
  28   LDBCommandExecuteResult(State state, std::string& msg)
  29       : state_(state), message_(msg) {}
  30
  31   std::string ToString() {
  32     std::string ret;
  33     switch (state_) {
  34       case EXEC_SUCCEED:
  35         break;
  36       case EXEC_FAILED:
  37         ret.append("Failed: ");
  38         break;
  39       case EXEC_NOT_STARTED:
  40         ret.append("Not started: ");
  41     }
  42     if (!message_.empty()) {
  43       ret.append(message_);
  44     }
  45     return ret;
  46   }
  47
  48   void Reset() {
  49     state_ = EXEC_NOT_STARTED;
  50     message_ = "";
  51   }
  52
  53   bool IsSucceed() { return state_ == EXEC_SUCCEED; }
  54
  55   bool IsNotStarted() { return state_ == EXEC_NOT_STARTED; }
  56
  57   bool IsFailed() { return state_ == EXEC_FAILED; }
  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 }  // namespace ROCKSDB_NAMESPACE