#include "quill/Backend.h" #include "quill/Frontend.h" #include "quill/LogMacros.h" #include "quill/Logger.h" #include "quill/sinks/ConsoleSink.h" #include #include /** * Trivial logging example to console */ int main() { // Start the backend thread quill::BackendOptions backend_options; quill::Backend::start(backend_options); // Frontend auto console_sink = quill::Frontend::create_or_get_sink("sink_id_1"); quill::Logger* logger = quill::Frontend::create_or_get_logger("root", std::move(console_sink)); // Change the LogLevel to print everything logger->set_log_level(quill::LogLevel::TraceL3); LOG_TRACE_L3(logger, "This is a log trace l3 example {}", 1); LOG_TRACE_L2(logger, "This is a log trace l2 example {} {}", 2, 2.3); LOG_TRACE_L1(logger, "This is a log trace l1 {} example", "string"); LOG_DEBUG(logger, "This is a log debug example {}", 4); LOG_INFO(logger, "This is a log info example {}", sizeof(std::string)); LOG_WARNING(logger, "This is a log warning example {}", sizeof(std::string)); LOG_ERROR(logger, "This is a log error example {}", sizeof(std::string)); LOG_CRITICAL(logger, "This is a log critical example {}", sizeof(std::string)); // libfmt format specification mini language is supported // note: named arguments are not supported LOG_INFO(logger, "Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42); LOG_INFO(logger, "Easy padding in numbers like {:08d}", 12); LOG_INFO(logger, "{:>30}", "right aligned"); LOG_INFO(logger, "Positional arguments {1} {2} {0} ", "too", "are", "supported"); LOG_INFO(logger, "Support for precision {:.4f}", 1.23456); // To log with a different format to the same sink, just create another logger auto console_sink_2 = quill::Frontend::get_sink("sink_id_1"); // get the created sink quill::Logger* logger_2 = quill::Frontend::create_or_get_logger( "logger_2", std::move(console_sink_2), "%(time) %(log_level:<9) %(logger:<12) %(message)"); logger_2->set_log_level(quill::LogLevel::TraceL3); LOG_TRACE_L3(logger_2, "This is a log trace l3 example {}", 1); LOG_TRACE_L2(logger_2, "This is a log trace l2 example {} {}", 2, 2.3); LOG_TRACE_L1(logger_2, "This is a log trace l1 {} example", "string"); LOG_DEBUG(logger_2, "This is a log debug example {}", 4); LOG_INFO(logger_2, "This is a log info example {}", sizeof(std::string)); LOG_WARNING(logger_2, "This is a log warning example {}", sizeof(std::string)); LOG_ERROR(logger_2, "This is a log error example {}", sizeof(std::string)); LOG_CRITICAL(logger_2, "This is a log critical example {}", sizeof(std::string)); }