144 lines
4.9 KiB
C++
144 lines
4.9 KiB
C++
//
|
|
// Copyright(c) 2015 Gabi Melman.
|
|
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
|
|
//
|
|
//
|
|
// spdlog usage example
|
|
//
|
|
#include "spdlog/spdlog.h"
|
|
|
|
#include <cstdlib> // EXIT_FAILURE
|
|
#include <iostream>
|
|
#include <memory>
|
|
|
|
void async_example();
|
|
void syslog_example();
|
|
void color_example();
|
|
|
|
namespace spd = spdlog;
|
|
int main(int, char*[])
|
|
{
|
|
try
|
|
{
|
|
//Create console, multithreaded logger
|
|
auto console = spd::stdout_logger_mt("console");
|
|
console->info("Welcome to spdlog!");
|
|
console->info("An info message example {}..", 1);
|
|
console->info() << "Streams are supported too " << 1;
|
|
|
|
//Formatting examples
|
|
console->info("Easy padding in numbers like {:08d}", 12);
|
|
console->info("Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42);
|
|
console->info("Support for floats {:03.2f}", 1.23456);
|
|
console->info("Positional args are {1} {0}..", "too", "supported");
|
|
|
|
console->info("{:<30}", "left aligned");
|
|
console->info("{:>30}", "right aligned");
|
|
console->info("{:^30}", "centered");
|
|
|
|
spd::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name) function");
|
|
|
|
// Runtime log levels
|
|
spd::set_level(spd::level::info); //Set global log level to info
|
|
console->debug("This message shold not be displayed!");
|
|
console->set_level(spd::level::debug); // Set specific logger's log level
|
|
console->debug("This message shold be displayed..");
|
|
|
|
// Create a file rotating logger with 5mb size max and 3 rotated files
|
|
auto file_logger = spd::rotating_logger_mt("file_logger", "logs/mylogfile", 1048576 * 5, 3);
|
|
for (int i = 0; i < 10; ++i)
|
|
file_logger->info("{} * {} equals {:>10}", i, i, i*i);
|
|
|
|
// Create a daily logger - a new file is created every day on 2:30am
|
|
auto daily_logger = spd::daily_logger_mt("daily_logger", "logs/daily", 2, 30);
|
|
|
|
// Customize msg format for all messages
|
|
spd::set_pattern("*** [%H:%M:%S %z] [thread %t] %v ***");
|
|
file_logger->info("This is another message with custom format");
|
|
|
|
|
|
// Compile time debug or trace macros.
|
|
// Enabled #ifdef SPDLOG_DEBUG_ON or #ifdef SPDLOG_TRACE_ON
|
|
SPDLOG_TRACE(console, "Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}", 1, 3.23);
|
|
SPDLOG_DEBUG(console, "Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}", 1, 3.23);
|
|
|
|
// Asynchronous logging is very fast..
|
|
// Just call spdlog::set_async_mode(q_size) and all created loggers from now on will be asynchronous..
|
|
async_example();
|
|
|
|
// syslog example. linux/osx only..
|
|
syslog_example();
|
|
|
|
// terminal color example (works under linux/osx. windows: only if ansi.sys is loaded)
|
|
color_example();
|
|
|
|
// Release and close all loggers
|
|
spdlog::drop_all();
|
|
}
|
|
|
|
catch (const spd::spdlog_ex& ex)
|
|
{
|
|
std::cout << "Log failed: " << ex.what() << std::endl;
|
|
return EXIT_FAILURE;
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
|
|
void async_example()
|
|
{
|
|
size_t q_size = 4096; //queue size must be power of 2
|
|
spdlog::set_async_mode(q_size);
|
|
auto async_file = spd::daily_logger_st("async_file_logger", "logs/async_log.txt");
|
|
for (int i = 0; i < 100; ++i)
|
|
async_file->info("Async message #{}", i);
|
|
}
|
|
|
|
//syslog example (linux/osx only)
|
|
void syslog_example()
|
|
{
|
|
#if defined (__linux__) || defined(__APPLE__)
|
|
std::string ident = "spdlog-example";
|
|
auto syslog_logger = spd::syslog_logger("syslog", ident, LOG_PID);
|
|
syslog_logger->warn("This is warning that will end up in syslog. This is Linux only!");
|
|
#endif
|
|
}
|
|
|
|
// terminal color example (works under linux/osx. windows: only if ansi.sys is loaded)
|
|
#include "spdlog/sinks/ansicolor_sink.h"
|
|
void color_example()
|
|
{
|
|
// Create a sink to add colors to.
|
|
auto console_out = spdlog::sinks::stderr_sink_st::instance();
|
|
auto color_sink = std::make_shared<spd::sinks::ansicolor_sink>(console_out); // wraps around another sink
|
|
auto color_logger = spd::details::registry::instance().create("Color", color_sink);
|
|
color_logger->set_level(spd::level::trace);
|
|
color_sink->setColor(spd::level::info, color_sink->bold + color_sink->green);
|
|
color_logger->info("Testing color logger...");
|
|
color_logger->trace("Trace");
|
|
color_logger->debug("Debug");
|
|
color_logger->info("Info");
|
|
color_logger->notice("Notice");
|
|
color_logger->warn("Warning");
|
|
color_logger->error("Error");
|
|
color_logger->critical("Critical");
|
|
color_logger->alert("Alert");
|
|
color_logger->emerg("Emergency");
|
|
}
|
|
|
|
|
|
// Example of user defined class with operator<<
|
|
class some_class {};
|
|
std::ostream& operator<<(std::ostream& os, const some_class&)
|
|
{
|
|
return os << "some_class";
|
|
}
|
|
|
|
void custom_class_example()
|
|
{
|
|
some_class c;
|
|
spdlog::get("console")->info("custom class with operator<<: {}..", c);
|
|
spdlog::get("console")->info() << "custom class with operator<<: " << c << "..";
|
|
}
|
|
|