c++日志工具spdlog
spdlog日志是纯头文件，使用起来比较方便。使用时只需要简单的初始化即可，这里对其初始化做了一个简单的封装，这样使用起来更加方便。
封装类代码
头文件
cspdlog.h
#ifndef _CSPDLOG_H_ #define _CSPDLOG_H_ #include "spdlog/spdlog.h" #include "spdlog/fmt/bin_to_hex.h" #include <memory> #include <string> class CSpdlog { protected: CSpdlog(); ~CSpdlog(); static CSpdlog *m_instance; public: static CSpdlog *GetInstance(); void Init(const std::string & name,const std::string &logPath, std::size_t max_size=1048576, std::size_t max_file = 2); void SetConsoleLogLevel(spdlog::level::level_enum log_level); void SetFileLogLevel(spdlog::level::level_enum log_level); private: std::vector<spdlog::sink_ptr> m_sinks; std::shared_ptr<spdlog::logger> m_logger; }; #endif
源文件
cspdlog.cpp
#include "cspdlog.h" #include <cstdio> #include <iostream> #include "spdlog/sinks/stdout_color_sinks.h" // or "../stdout_sinks.h" if no color needed #include "spdlog/sinks/basic_file_sink.h" #include "spdlog/sinks/rotating_file_sink.h" CSpdlog::CSpdlog() { } CSpdlog::~CSpdlog() { } void CSpdlog::Init(const std::string & name, const std::string &log_path, std::size_t max_size, std::size_t max_file ) { try { auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>(); console_sink->set_level(spdlog::level::debug); console_sink->set_pattern("%^[%Y-%m-%d %H:%M:%S:%e] [%n] [tid: %t] [%l] %v%$"); std::string logFile = log_path + "/" + name + ".txt"; //auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs/multisink.txt", false); auto file_sink = std::make_shared<spdlog::sinks::rotating_file_sink_mt>(logFile, max_size, max_file); file_sink->set_pattern("[%Y-%m-%d %H:%M:%S:%e] [%n] [tid: %t] [%l] %v"); file_sink->set_level(spdlog::level::warn); m_sinks.push_back(console_sink); m_sinks.push_back(file_sink); //spdlog::logger *logger = new spdlog::logger("multi_sink", {console_sink, file_sink}); m_logger = std::make_shared<spdlog::logger>(name, begin( m_sinks ), end( m_sinks )); //spdlog::set_error_handler([](const std::string& msg){printf("*****Custom log error handler, %s*****%\n", msg.c_str());}); //注册到spdlog里 spdlog::register_logger(m_logger); //m_logger->info("log init done."); m_logger->flush_on(spdlog::level::level_enum::warn); } catch (const spdlog::spdlog_ex &ex) { std::cout<<"Log initialization faild"<<ex.what()<<std::endl; } } void CSpdlog::SetConsoleLogLevel(spdlog::level::level_enum log_level) { m_logger->set_level(log_level); } void CSpdlog::SetFileLogLevel(spdlog::level::level_enum log_level) { m_sinks[1]->set_level(log_level); } CSpdlog* CSpdlog::m_instance = NULL; CSpdlog* CSpdlog::GetInstance() { if ( m_instance == NULL ) { m_instance = new CSpdlog; } return m_instance; }
测试主程序
#include <stdio.h> #include <unistd.h> #include <iostream> #include <cspdlog.h> using namespace std; int main() { CSpdlog::GetInstance()->Init("test","./log"); //初始化日志 CSpdlog::GetInstance()->SetConsoleLogLevel(spdlog::level::debug); //设置终端界面输出级别 CSpdlog::GetInstance()->SetFileLogLevel(spdlog::level::warn); //设置log文件输出级别 auto logger = spdlog::get("test"); //获取日志句柄 logger->warn("test start."); int counter = 0; while(1) { logger->debug("debug msg, counter: {}",counter); logger->info("info msg, counter: {}",counter); logger->warn("warn msg, counter: {}",counter); logger->error("error msg, counter: {}",counter); logger->critical("critical msg, counter: {}",counter); logger->trace("trace msg, counter: {}",counter); usleep(500000); } return 0; }
编译运行
我的通用Makefile
#通用makefile #文件目录 DEBUG_DIR=. SRC_DIR=. INC_DIR=. ./spdlog SRC=$(wildcard $(SRC_DIR)/*.cpp ) #源文件 OBJS=$(patsubst $(SRC_DIR)/%.cpp,$(DEBUG_DIR)/%.o,$(SRC)) #目标文件名 TARGET=test INSTALL_PATH ?= . #修改编译器 ARCH ?= CC=$(ARCH)gcc CPP=$(ARCH)g++ AR=$(ARCH)ar STRIP=$(ARCH)strip CFLAGS += -Wall -std=c++11 LDFLAGS += -lpthread CFLAGS += $(foreach dir,$(INC_DIR),-I$(dir)) all:$(TARGET) $(TARGET): $(OBJS) $(CPP) $(OBJS) -o $@ $(CFLAGS) $(LDFLAGS) $(STRIP) $(TARGET) #cp $(TARGET) $(INSTALL_PATH) $(DEBUG_DIR)/%.o: $(SRC_DIR)/%.cpp $(CPP) $(CFLAGS) -c $< -o $@ #@echo $(SRC) #@echo $(OBJS) clean: -rm $(OBJS) $(LIB_TARGET)
编译
make g++ -Wall -std=c++11 -I. -I./spdlog -c cspdlog.cpp -o cspdlog.o g++ -Wall -std=c++11 -I. -I./spdlog -c main.cpp -o main.o g++ ./cspdlog.o ./main.o -o test -Wall -std=c++11 -I. -I./spdlog strip test
运行
console输出：
文件输出：
$cat log/test.txt [2021-08-17 15:30:59:526] [test] [tid: 20418] [warning] test start. [2021-08-17 15:30:59:527] [test] [tid: 20418] [warning] warn msg, counter: 0 [2021-08-17 15:30:59:528] [test] [tid: 20418] [error] error msg, counter: 0 [2021-08-17 15:30:59:529] [test] [tid: 20418] [critical] critical msg, counter: 0 [2021-08-17 15:31:00:031] [test] [tid: 20418] [warning] warn msg, counter: 0 [2021-08-17 15:31:00:032] [test] [tid: 20418] [error] error msg, counter: 0 [2021-08-17 15:31:00:032] [test] [tid: 20418] [critical] critical msg, counter: 0 [2021-08-17 15:31:00:533] [test] [tid: 20418] [warning] warn msg, counter: 0 [2021-08-17 15:31:00:533] [test] [tid: 20418] [error] error msg, counter: 0 [2021-08-17 15:31:00:534] [test] [tid: 20418] [critical] critical msg, counter: 0
测试源代码以上传码云
地址：
