From 9cfdfc75b7e146544890be487ba90a48e29cfcd0 Mon Sep 17 00:00:00 2001 From: gabime Date: Sun, 15 Feb 2015 23:35:55 +0200 Subject: [PATCH] Updated example to show daily logger usage --- README.md | 6 +++++ example/example.cpp | 53 ++++++++++++++++++++++++++++++--------------- 2 files changed, 41 insertions(+), 18 deletions(-) diff --git a/README.md b/README.md index 8d3e16f6..df165540 100644 --- a/README.md +++ b/README.md @@ -98,6 +98,12 @@ int main(int, char* []) 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 // diff --git a/example/example.cpp b/example/example.cpp index 44f6c0bf..e1dbffff 100644 --- a/example/example.cpp +++ b/example/example.cpp @@ -28,20 +28,18 @@ #include #include "spdlog/spdlog.h" -int main(int, char* []) +int main(int, char*[]) { namespace spd = spdlog; try { - // Set log level to all loggers to debug and above - spd::set_level(spd::level::debug); - - // Create console, multithreaded logger + //Create console, multithreaded logger auto console = spd::stdout_logger_mt("console"); - console->info("Hello {}", 1); + 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); @@ -51,37 +49,59 @@ int main(int, char* []) console->info("{:>30}", "right aligned"); console->info("{:^30}", "centered"); + // + // 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("Now it should.."); + + // // 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); - file_logger->set_level(spd::level::info); - for(int i = 0; i < 10; ++i) + 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"); spd::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name) function"); + // + // 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.. + // size_t q_size = 1048576; //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"); + auto async_file = spd::daily_logger_st("async_file_logger", "logs/async_log.txt"); async_file->info() << "This is async log.." << "Should be very fast!"; + // // syslog example. linux only.. + // #ifdef __linux__ 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 - - //Close all loggers - spd::drop_all(); } catch (const spd::spdlog_ex& ex) { @@ -90,19 +110,16 @@ int main(int, char* []) } -// // Example of user defined class with operator<< -// class some_class {}; -std::ostream& operator<<(std::ostream& os, const some_class&) -{ +std::ostream& operator<<(std::ostream& os, const some_class& c) { 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; + spdlog::get("console")->info("custom class with operator<<: {}..", c); + spdlog::get("console")->info() << "custom class with operator<<: " << c << ".."; }