2016-04-20 16:57:49 +08:00
|
|
|
//
|
|
|
|
// Copyright(c) 2015 Gabi Melman.
|
|
|
|
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
|
|
|
|
//
|
|
|
|
//
|
|
|
|
// spdlog usage example
|
|
|
|
//
|
|
|
|
#include "spdlog/spdlog.h"
|
|
|
|
|
|
|
|
#include <iostream>
|
|
|
|
#include <memory>
|
|
|
|
|
|
|
|
void async_example();
|
|
|
|
void syslog_example();
|
2016-07-22 23:06:36 +08:00
|
|
|
void user_defined_example();
|
2016-08-05 08:56:40 +08:00
|
|
|
void err_handler_example();
|
2016-04-20 16:57:49 +08:00
|
|
|
|
|
|
|
namespace spd = spdlog;
|
|
|
|
int main(int, char*[])
|
|
|
|
{
|
2016-07-23 01:19:26 +08:00
|
|
|
try
|
|
|
|
{
|
|
|
|
// Multithreaded color console
|
|
|
|
auto console = spd::stdout_logger_mt("console", true);
|
|
|
|
console->info("Welcome to spdlog!");
|
|
|
|
console->error("An info message example {}..", 1);
|
|
|
|
|
|
|
|
// Formatting examples
|
|
|
|
console->warn("Easy padding in numbers like {:08d}", 12);
|
|
|
|
console->critical("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 basic file logger (not rotated)
|
|
|
|
auto my_logger = spd::basic_logger_mt("basic_logger", "logs/basic.txt");
|
|
|
|
my_logger->info("Some log message");
|
|
|
|
|
|
|
|
|
|
|
|
// Create a file rotating logger with 5mb size max and 3 rotated files
|
|
|
|
auto rotating_logger = spd::rotating_logger_mt("some_logger_name", "logs/mylogfile", 1048576 * 5, 3);
|
|
|
|
for (int i = 0; i < 10; ++i)
|
|
|
|
rotating_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);
|
|
|
|
daily_logger->info(123.44);
|
|
|
|
|
|
|
|
// Customize msg format for all messages
|
|
|
|
spd::set_pattern("*** [%H:%M:%S %z] [thread %t] %v ***");
|
|
|
|
rotating_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);
|
2016-08-05 09:43:20 +08:00
|
|
|
|
2016-07-23 01:19:26 +08:00
|
|
|
// 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();
|
|
|
|
|
|
|
|
// log user-defined types example..
|
|
|
|
user_defined_example();
|
|
|
|
|
2016-08-05 09:43:20 +08:00
|
|
|
// Change default log error handler
|
|
|
|
err_handler_example();
|
2016-08-05 08:56:40 +08:00
|
|
|
|
2016-08-05 09:43:20 +08:00
|
|
|
console->info("End of example. bye..");
|
2016-07-23 01:19:26 +08:00
|
|
|
|
|
|
|
// Release and close all loggers
|
|
|
|
spdlog::drop_all();
|
|
|
|
}
|
2016-08-05 09:43:20 +08:00
|
|
|
// Exceptions will only be thrown upon failed logger or sink construction (not during logging)
|
2016-07-23 01:19:26 +08:00
|
|
|
catch (const spd::spdlog_ex& ex)
|
|
|
|
{
|
2016-08-05 08:56:40 +08:00
|
|
|
std::cout << "Log init failed: " << ex.what() << std::endl;
|
|
|
|
return 1;
|
2016-08-05 09:43:20 +08:00
|
|
|
}
|
2016-04-20 16:57:49 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
void async_example()
|
|
|
|
{
|
2016-07-23 01:19:26 +08:00
|
|
|
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)
|
2016-08-05 08:56:40 +08:00
|
|
|
async_file->info("Async message #{}{}", i);
|
2016-04-20 16:57:49 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
//syslog example (linux/osx only)
|
|
|
|
void syslog_example()
|
|
|
|
{
|
|
|
|
#if defined (__linux__) || defined(__APPLE__)
|
2016-07-23 01:19:26 +08:00
|
|
|
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!");
|
2016-04-20 16:57:49 +08:00
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2016-07-23 01:19:26 +08:00
|
|
|
// user defined types logging by implementing operator<<
|
2016-07-22 23:06:36 +08:00
|
|
|
struct my_type
|
|
|
|
{
|
2016-07-23 01:19:26 +08:00
|
|
|
int i;
|
|
|
|
template<typename OStream>
|
|
|
|
friend OStream& operator<<(OStream& os, const my_type &c)
|
|
|
|
{
|
|
|
|
return os << "[my_type i="<<c.i << "]";
|
|
|
|
}
|
2016-07-22 23:06:36 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
#include <spdlog/fmt/ostr.h> // must be included
|
|
|
|
void user_defined_example()
|
|
|
|
{
|
2016-07-23 01:19:26 +08:00
|
|
|
spd::get("console")->info("user defined type: {}", my_type { 14 });
|
2016-07-22 23:06:36 +08:00
|
|
|
}
|
|
|
|
|
2016-08-05 08:56:40 +08:00
|
|
|
//
|
|
|
|
//custom error handler
|
|
|
|
//
|
|
|
|
void err_handler_example()
|
2016-08-05 09:43:20 +08:00
|
|
|
{
|
|
|
|
//can be set globaly or per logger(logger->set_error_handler(..))
|
|
|
|
spdlog::set_error_handler([](const std::string& msg)
|
|
|
|
{
|
|
|
|
std::cerr << "my err handler: " << msg << std::endl;
|
|
|
|
});
|
|
|
|
spd::get("console")->info("some invalid message to trigger an error {}{}{}{}", 3);
|
2016-08-05 08:56:40 +08:00
|
|
|
}
|
|
|
|
|