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：
https://gitee.com/fensnote/demo_code/tree/master/cpp/spdlog
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