Line data    Source code

       1              : /*
       2              :  * If not stated otherwise in this file or this component's LICENSE file the
       3              :  * following copyright and licenses apply:
       4              :  *
       5              :  * Copyright 2023 Sky UK
       6              :  *
       7              :  * Licensed under the Apache License, Version 2.0 (the "License");
       8              :  * you may not use this file except in compliance with the License.
       9              :  * You may obtain a copy of the License at
      10              :  *
      11              :  * http://www.apache.org/licenses/LICENSE-2.0
      12              :  *
      13              :  * Unless required by applicable law or agreed to in writing, software
      14              :  * distributed under the License is distributed on an "AS IS" BASIS,
      15              :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      16              :  * See the License for the specific language governing permissions and
      17              :  * limitations under the License.
      18              :  */
      19              : 
      20              : #ifndef LOGGER_H_
      21              : #define LOGGER_H_
      22              : 
      23              : #include <fstream>
      24              : #include <mutex>
      25              : #include <sstream>
      26              : #include <string>
      27              : 
      28              : enum Severity
      29              : {
      30              :     fatal = 0,
      31              :     error = 1,
      32              :     warn = 2,
      33              :     mil = 3,
      34              :     info = 4,
      35              :     debug = 5
      36              : };
      37              : 
      38              : class LogFile
      39              : {
      40              : public:
      41              :     static LogFile &instance();
      42              :     bool write(const std::string &line);
      43              :     bool isEnabled() const;
      44              :     void reset();
      45              : 
      46              : private:
      47              :     LogFile();
      48              :     ~LogFile();
      49              : 
      50              :     void tryOpenFile();
      51              :     void tryCloseFile();
      52              : 
      53              : private:
      54              :     std::fstream m_file;
      55              :     std::mutex m_mutex;
      56              : };
      57              : 
      58              : class Logger;
      59              : class Flusher
      60              : {
      61              : public:
      62              :     Flusher(std::stringstream &stream, const std::string &componentName, const Severity &severity);
      63              :     ~Flusher();
      64              : 
      65          823 :     template <typename T> Flusher &operator<<(const T &text)
      66              :     {
      67          823 :         m_stream << text;
      68          823 :         return *this;
      69              :     }
      70              : 
      71              : private:
      72              :     std::stringstream &m_stream;
      73              :     Severity m_severity;
      74              : };
      75              : 
      76              : class Logger
      77              : {
      78              : public:
      79              :     explicit Logger(const std::string &componentName);
      80              :     Flusher operator<<(const Severity &) const;
      81              : 
      82              : private:
      83              :     const std::string m_componentName;
      84              :     mutable std::stringstream m_stream;
      85              : };
      86              : 
      87              : #endif // LOGGER_H_