update 添加时间 等级

CMakeLists.txt

@@ -3,5 +3,4 @@ project(cppTemp)
 
 set(CMAKE_CXX_STANDARD 20)
 
-add_executable(cppTemp main.cpp
+add_executable(cppTemp main.cpp Logger.cpp Logger.h)
-)

Logger.h

@@ -30,8 +30,9 @@ class LogQueue {
 public:
     void push(const std::string& msg) {
         std::lock_guard<std::mutex> lock(mutex_);
+        queue_.push(msg);
         //构造好自动加锁，析构自动解锁
-        cond_var_.notify_one();
+        cond_var_.notify_all();
     }; //字符串放队列中
     bool pop(std::string& msg) {
         std::unique_lock<std::mutex> lock(mutex_);
@@ -44,6 +45,12 @@ public:
         if (is_shutdown_ && queue_.empty()) {
             return false;
         }
+        //保证队列的数据被清空掉
+        // while (is_shutdown_ && !queue_.empty()) {
+        //     msg = queue_.front();
+        //     queue_.pop();
+        //     return false;
+        // }
         msg = queue_.front(); //返回消息给msg指针
         queue_.pop();
         return true;
@@ -60,6 +67,13 @@ private:
     bool is_shutdown_ = false;
 };
 
+enum class Loglevel {
+    INFO,
+    DEBUG,
+    WARNING,
+    ERROR
+};
+
 class Logger {
 public:
     Logger(const std::string& filename) : log_file_(filename, std::ios::out | std::ios::app)
@@ -75,12 +89,80 @@ public:
             }
         });
     };
-    ~Logger();
+    ~Logger() {
+        exit_flag_ = true;
+        log_queue_.shutdown();
+        //如果日志结束了，说明主线程退出，这里是优雅退出，等待其他主线程
+        if (worker_thread_.joinable()) {
+            worker_thread_.join();
+        }
+
+        if (log_file_.is_open()) {
+            log_file_.close();
+        }
+    };
 
     template<typename ... Args>
-    void log(const std::string& format, Args&& ...args);
+    void log(Loglevel loglevel, const std::string& format, Args&& ...args) {
+        std::string level_str;
+        switch (loglevel) {
+            case Loglevel::INFO:
+                level_str = "[INFO] ";
+                break;
+            case Loglevel::DEBUG:
+                level_str = "[DEBUG] ";
+                break;
+            case Loglevel::WARNING:
+                level_str = "[WARNING] ";
+                break;
+            case Loglevel::ERROR:
+                level_str = "[ERROR] ";
+                break;
+        }
+        log_queue_.push(level_str + formatMessage(format, std::forward<Args>(args)...));
+    };
 
 private:
+
+    std::string GetTimeStamp() {
+        std::time_t now = std::time(nullptr);
+        std::tm* local_time = std::localtime(&now);
+        char buffer[80];
+        std::strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", local_time);
+        return std::string(buffer);
+    }
+
+    template<typename ... Args>
+    std::string formatMessage(const std::string& format, Args&&...args) {
+        std::vector<std::string> arg_strings = {to_string_helper(std::forward<Args>(args))...};
+        std::ostringstream oss;
+        size_t arg_index = 0;
+        size_t pos = 0;
+        size_t placeholder = format.find("{}", pos);
+
+        oss << GetTimeStamp() << " ";
+
+        while (placeholder != std::string::npos) {
+            oss << format.substr(pos, placeholder - pos);
+            if (arg_index < arg_strings.size()) {
+                oss << arg_strings[arg_index];
+            } else {
+                oss << "{}";
+                //如果占位符没有对应参数，保留占位符
+            }
+            arg_strings[arg_index++];
+            pos = placeholder + 2;
+            placeholder = format.find("{}", pos);
+        }
+
+
+        oss << format.substr(pos);
+        while (arg_index < arg_strings.size()) {
+            oss << arg_strings[arg_index++];
+        }
+        return oss.str();
+    }
+
     LogQueue log_queue_;
     std::thread worker_thread_;
     std::ofstream log_file_;

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-				}
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-			"targets" : 
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-					"id" : "cppTemp::@6890427a1f51a3e7e1df",
-					"jsonFile" : "target-cppTemp-Debug-f55973cf228b99e57e4f.json",
-					"name" : "cppTemp",
-					"projectIndex" : 0
-				}
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-	],
-	"kind" : "codemodel",
-	"paths" : 
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-		"source" : "/Users/czzhangheng/cppTemp"
-	},
-	"version" : 
-	{
-		"major" : 2,
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-End testing: Jul 08 15:43 CST
+End testing: Jul 09 14:56 CST

main.cpp

@@ -3,6 +3,20 @@
 
 
 int main() {
+    try {
+        Logger logger("log.txt");
+        int id = 42;
+        std::string action = "login";
+        double duration = 2.333;
+        std::string channel = "World";
+        logger.log(Loglevel::INFO, "User {} performed {} in {} seconds", id, action, duration);
+        logger.log(Loglevel::DEBUG,"Hello {}", channel);
+        logger.log(Loglevel::WARNING,"This is a log message.");
+        logger.log(Loglevel::ERROR,"Multiple placeholders : {}, {}, ",1,2,3);
+    } catch (const std::exception&e) {
+        std::cerr << "Error is" << e.what() << std::endl;
+    }
+
 
     return 0;
 }