feat(logger): add timestamp support to log messages

logger/Makefile

@@ -16,7 +16,8 @@ BUILD_DIR := $(ROOT_DIR)/build
 
 TARGET := $(BUILD_DIR)/liblogger.so
 
-SRC := src/logger.cpp
+SRC := src/logger.cpp \
+       src/time_utils.cpp
 
 
 .PHONY: all clean
@@ -31,7 +32,7 @@ $(TARGET): $(SRC)
 	$(CC) \
 		$(CXXFLAGS) \
 		-shared \
-		$< \
+		$^ \
 		-o $@ \
 		$(LDFLAGS)
 

logger/src/logger.cpp

@@ -2,6 +2,8 @@
 
 #include <fstream>
 
+#include "time_utils.hpp"
+
 namespace logger {
 
 Logger::Logger(const std::string &fileName, LogLevel defaultLevel)
@@ -10,13 +12,16 @@ Logger::Logger(const std::string &fileName, LogLevel defaultLevel)
 Logger::~Logger() = default;
 
 core::Status Logger::writeMessage(LogLevel level, const std::string &message) {
+  // std::ios::app — режим добавления в конец файла
+  // без удаления уже существующих записей.
   std::ofstream stream(fileName_, std::ios::app);
 
   if (!stream.is_open()) {
     return core::Status::Failure("Unable to open log file: " + fileName_);
   }
 
-  stream << "[" << level.toString() << "] " << message << '\n';
+  stream << '[' << time::getCurrentTimestamp() << "] [" << level.toString()
+         << "] " << message << '\n';
 
   if (!stream.good()) {
     return core::Status::Failure("Failed to write to log file: " + fileName_);

logger/src/time_utils.cpp

@@ -0,0 +1,29 @@
+#include "time_utils.hpp"
+
+#include <chrono>
+#include <ctime>
+#include <iomanip>
+#include <sstream>
+
+namespace logger::time {
+
+std::string getCurrentTimestamp() {
+  const auto now = std::chrono::system_clock::now();
+  const std::time_t currentTime = std::chrono::system_clock::to_time_t(now);
+
+  std::tm localTime{};
+
+#if defined(_WIN32)
+  localtime_s(&localTime, &currentTime);
+#else
+  localtime_r(&currentTime, &localTime);
+#endif
+
+  std::ostringstream stream;
+
+  stream << std::put_time(&localTime, "%Y-%m-%d %H:%M:%S");
+
+  return stream.str();
+}
+
+} // namespace logger::time

logger/src/time_utils.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <string>
+
+namespace logger::time {
+
+/**
+ * @brief Возвращает текущее локальное время.
+ *
+ * Время возвращается в формате:
+ *
+ * @code
+ * YYYY-MM-DD HH:MM:SS
+ * @endcode
+ *
+ * @return Текущее локальное время в виде строки.
+ */
+std::string getCurrentTimestamp();
+
+} // namespace logger::time

tests/Makefile

@@ -25,7 +25,8 @@ LOGGER_TEST_SRC := core/logger_test.cpp
 SCOPED_FILE_TEST_SRC := helpers/scoped_file_test.cpp
 
 
-LOGGER_SRC := $(ROOT_DIR)/logger/src/logger.cpp
+LOGGER_SRC := $(ROOT_DIR)/logger/src/logger.cpp \
+              $(ROOT_DIR)/logger/src/time_utils.cpp
 
 
 .PHONY: all test clean