【日志工具】g3log_6_ROS1中g3log的安装&使用

ROS1中g3log的安装&使用

基于ros1-melodic版本进行封装使用

g3log库安装

git clone https://github.com/KjellKod/g3log.git
cd g3log
git checkout c++11-master
mkdir build
cd build
cmake ..
make
sudo make install

g3sinks库安装

ros环境下的boost库安装目录与g3sinks要求的不一致，所以先修改下 ./g3sinks/sink_lograte/CMakeLists.txt ，target_link_libraries修改为如下

target_link_libraries(
  g3logrotate
  PUBLIC  ${G3LOG_LIBRARY}
  /usr/lib/x86_64-linux-gnu/libboost_filesystem.so
  /usr/lib/x86_64-linux-gnu/libboost_system.so
  # ${Boost_LIBRARIES}
  #PRIVATE Boost::filesystem
  #PRIVATE Boost::system
  PRIVATE ${ZLIB_LIBRARY}
  )

git clone https://github.com/KjellKod/g3sinks.git
cd g3sinks
git checkout c++11-master
mkdir build
cd build
cmake ..
make
sudo make install

g3log封装

g3log_helper.h

#pragma once
#include <iostream>
#include <stdlib.h>
#include <memory>

#include <g3sinks/LogRotate.h>
#include <g3log/g3log.hpp>
#include <g3log/logworker.hpp>

struct CustomSink {
  // Linux xterm color
  // http://stackoverflow.com/questions/2616906/how-do-i-output-coloured-text-to-a-linux-terminal
  enum FG_Color { YELLOW = 33, RED = 31, GREEN = 32, WHITE = 97 };

  FG_Color GetColor(const LEVELS level) const {
    if (level.value == WARNING.value) {
      return YELLOW;
    }
    if (level.value == DEBUG.value) {
      return GREEN;
    }
    if (g3::internal::wasFatal(level)) {
      return RED;
    }
    return WHITE;
  }

  void ReceiveLogMessage(g3::LogMessageMover logEntry) {
    auto level = logEntry.get()._level;
    auto color = GetColor(level);

    std::cout << "\033[" << color << "m" << logEntry.get().toString()
              << "\033[m" << std::endl;
  }
};

class G3log_Helper {
public:
  // G3Log配置：
  G3log_Helper(bool debug, std::string program);

  // G3Log内存清理：
  ~G3log_Helper();

private:
  bool debug_;
  std::unique_ptr<g3::LogWorker> worker;
};

g3log_helper.cpp

#include "g3log_helper.h"

// G3Log配置：
G3log_Helper::G3log_Helper(bool debug, std::string program) : debug_(debug) {
  // 配置日志目录
  std::string home = getenv("HOME");
  std::string dir_log = home + "/g3log";
  std::string mkdir_log = "mkdir -p " + dir_log;
  system(mkdir_log.c_str());

  worker = g3::LogWorker::createLogWorker();
  // 取消默认日志目录配置
  // auto handle = worker->addDefaultLogger(program, LOGDIR); 
  // 日志是否输出到终端
  if (debug_) {
    auto sinkHandle = worker->addSink(std2::make_unique<CustomSink>(),
                                      &CustomSink::ReceiveLogMessage);
  }
  // 自定义日志目录
  auto logHandle = worker->addSink(
      std::make_unique<LogRotate>(program, dir_log), &LogRotate::save);
  // 自定义日志大小
  const int k10MBInBytes = 10 * 1024 * 1024; // 10M
  std::future<void> received =
      logHandle->call(&LogRotate::setMaxLogSize, k10MBInBytes);

  g3::initializeLogging(worker.get());
}

// G3Log内存清理：
G3log_Helper::~G3log_Helper() { 
  g3::internal::shutDownLogging(); 
}

g3log语法

// 类初始化
G3log_Helper gh(true, "test_log");

// 正常流式输出
LOG(DEBUG) << "Hi " << "DEBUG";
LOG(INFO) << "Hi " << "INFO";
LOG(WARNING) << "Hi " << "WARNING";
// printf式输出
LOGF(INFO, "Hi log %d", 123);
LOGF(WARNING, "Printf-style syntax is also %s", "available");

// 条件输出
int less = 1;
int more = 2;
LOG_IF(INFO, (less < more)) << "If [true], then this text will be logged";

// or with printf-like syntax
LOGF_IF(INFO, (less < more), "if %d<%d then this text will be logged", less, more);

//*CHECK(false)*会触发一个“fatal”的信息
CHECK(less != more); // not FATAL
// CHECK(less > more) << "CHECK(false) triggers a FATAL message";