spdlog/example/example.cpp

92 lines
4.3 KiB
C++
Raw Normal View History

2014-11-01 09:20:54 +08:00
/*************************************************************************/
/* spdlog - an extremely fast and easy to use c++11 logging library. */
/* Copyright (c) 2014 Gabi Melman. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
2014-01-25 21:52:10 +08:00
//
2014-11-01 09:20:54 +08:00
// spdlog usage example
//
2014-10-12 09:40:11 +08:00
#include <iostream>
2014-12-07 12:54:25 +08:00
#include "spdlog/spdlog.h"
2014-12-07 12:02:46 +08:00
2014-11-24 07:38:29 +08:00
int main(int, char* [])
2014-10-19 00:04:24 +08:00
{
namespace spd = spdlog;
try
{
2014-11-02 03:34:55 +08:00
// Set log level to all loggers to DEBUG and above
2014-12-21 07:30:39 +08:00
spd::set_level(spd::level::debug);
2014-11-02 03:34:55 +08:00
//Create console, multithreaded logger
auto console = spd::stdout_logger_mt("console");
2014-10-31 22:34:48 +08:00
console->info("Welcome to spdlog!") ;
2014-12-07 12:02:46 +08:00
console->info("An info message example {}..", 1);
2014-11-30 02:01:01 +08:00
console->info() << "Streams are supported too " << 1;
2014-12-07 12:02:46 +08:00
console->info("Easy padding in numbers like {:08d}", 12);
2014-12-21 07:30:39 +08:00
console->info("Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42);
2014-12-07 12:02:46 +08:00
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");
2014-12-21 07:30:39 +08:00
2014-11-02 03:34:55 +08:00
//Create a file rotating logger with 5mb size max and 3 rotated files
2014-12-21 07:30:39 +08:00
auto file_logger = spd::rotating_logger_mt("file_logger", "logs/mylogfile", 1048576 * 5, 3);
file_logger->set_level(spd::level::info);
2014-12-07 13:18:43 +08:00
for(int i = 0; i < 10; ++i)
2014-12-21 07:30:39 +08:00
file_logger->info("{} * {} equals {:>10}", i, i, i*i);
2014-12-21 07:30:39 +08:00
//Customize msg format for all messages
2014-11-02 03:34:55 +08:00
spd::set_pattern("*** [%H:%M:%S %z] [thread %t] %v ***");
file_logger->info("This is another message with custom format");
spd::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name) function");
2014-12-18 16:12:06 +08:00
SPDLOG_TRACE(console, "Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}", 1, 3.23);
SPDLOG_DEBUG(console, "Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}", 1, 3.23);
2014-12-20 00:01:49 +08:00
2014-12-21 07:30:39 +08:00
//
// Asynchronous logging is very fast..
2014-12-07 13:24:46 +08:00
// Just call spdlog::set_async_mode(q_size) and all created loggers from now on will be asynchronous..
2014-12-21 07:30:39 +08:00
//
size_t q_size = 1048576; //queue size must be power of 2
2014-12-20 00:01:49 +08:00
spdlog::set_async_mode(q_size);
2014-11-30 02:01:01 +08:00
auto async_file= spd::daily_logger_st("async_file_logger", "logs/async_log.txt");
2014-12-21 07:30:39 +08:00
async_file->info() << "This is async log.." << "Should be very fast!";
//
// syslog example
//
#ifdef __linux__
std::string ident = "my_app";
auto syslog_logger = spd::syslog_logger("syslog", ident, LOG_PID | LOG_PERROR);
syslog_logger->warn("This is warning that will end up in syslog. This is Linux only!");
#endif
}
catch (const spd::spdlog_ex& ex)
{
std::cout << "Log failed: " << ex.what() << std::endl;
}
}