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include/events/consumers/logging_consumer.hpp

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+/*
+  Copyright <2018-2022> <scott.e.graves@protonmail.com>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+  associated documentation files (the "Software"), to deal in the Software without restriction,
+  including without limitation the rights to use, copy, modify, merge, publish, distribute,
+  sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all copies or
+  substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+  NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
+  OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+#ifndef INCLUDE_EVENTS_CONSUMERS_LOGGING_CONSUMER_HPP_
+#define INCLUDE_EVENTS_CONSUMERS_LOGGING_CONSUMER_HPP_
+
+#include "common.hpp"
+#include "events/event_system.hpp"
+
+namespace repertory {
+class logging_consumer {
+  E_CONSUMER();
+
+public:
+  logging_consumer(const std::string &log_directory, const event_level &level);
+
+  ~logging_consumer();
+
+private:
+  const std::uint8_t MAX_LOG_FILES = 5;
+  const std::uint64_t MAX_LOG_FILE_SIZE = (1024 * 1024 * 5);
+
+private:
+  event_level event_level_ = event_level::normal;
+  const std::string log_directory_;
+  const std::string log_path_;
+  bool logging_active_ = true;
+  std::mutex log_mutex_;
+  std::condition_variable log_notify_;
+  std::deque<std::shared_ptr<event>> event_queue_;
+  std::unique_ptr<std::thread> logging_thread_;
+  FILE *log_file_ = nullptr;
+
+private:
+  void check_log_roll(const size_t &count);
+
+  void close_log_file();
+
+  void logging_thread(const bool &drain = false);
+
+  void process_event(const event &event);
+
+  void reopen_log_file();
+};
+} // namespace repertory
+
+#endif // INCLUDE_EVENTS_CONSUMERS_LOGGING_CONSUMER_HPP_