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Updated file events example

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gabime 2021-11-15 14:32:34 +02:00
parent a3ad8b5f26
commit 30fb78813b
1 changed files with 32 additions and 22 deletions
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54
example/example.cpp
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@ -22,6 +22,7 @@ void err_handler_example();
void syslog_example(); void syslog_example();
void udp_example(); void udp_example();
void custom_flags_example(); void custom_flags_example();
void file_events_example();
#include "spdlog/spdlog.h" #include "spdlog/spdlog.h"
#include "spdlog/cfg/env.h" // support for loading levels from the environment variable #include "spdlog/cfg/env.h" // support for loading levels from the environment variable
@ -73,11 +74,13 @@ int main(int, char *[])
binary_example(); binary_example();
multi_sink_example(); multi_sink_example();
user_defined_example(); user_defined_example();
err_handler_example(); err_handler_example();
trace_example(); trace_example();
stopwatch_example(); stopwatch_example();
udp_example(); udp_example();
custom_flags_example(); custom_flags_example();
file_events_example();
// Flush all *registered* loggers using a worker thread every 3 seconds. // Flush all *registered* loggers using a worker thread every 3 seconds.
// note: registered loggers *must* be thread safe for this to work correctly! // note: registered loggers *must* be thread safe for this to work correctly!
@ -120,26 +123,7 @@ void basic_example()
void rotating_example() void rotating_example()
{ {
// Create a file rotating logger with 5mb size max and 3 rotated files. // Create a file rotating logger with 5mb size max and 3 rotated files.
spdlog::file_event_handlers_t file_event_handlers; auto rotating_logger = spdlog::rotating_logger_mt("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
file_event_handlers.before_open = [](spdlog::filename_t filename)
{
spdlog::info("basic_example() : file_event_handlers.before_open : {}", filename.c_str());
};
file_event_handlers.after_open = [](spdlog::filename_t filename, std::FILE* fstream)
{
fputs("OPEN!\r\n", fstream);
spdlog::info("basic_example() : file_event_handlers.after_open : {}", filename.c_str());
};
file_event_handlers.before_close = [](spdlog::filename_t filename, std::FILE* fstream)
{
fputs("CLOSE!\r\n", fstream);
spdlog::info("basic_example() : file_event_handlers.before_close : {}", filename.c_str());
};
file_event_handlers.after_close = [](spdlog::filename_t filename)
{
spdlog::info("basic_example() : file_event_handlers.after_close : {}", filename.c_str());
};
auto rotating_logger = spdlog::rotating_logger_mt("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3, false, file_event_handlers);
} }
#include "spdlog/sinks/daily_file_sink.h" #include "spdlog/sinks/daily_file_sink.h"
@ -321,5 +305,31 @@ void custom_flags_example()
using spdlog::details::make_unique; // for pre c++14 using spdlog::details::make_unique; // for pre c++14
auto formatter = make_unique<spdlog::pattern_formatter>(); auto formatter = make_unique<spdlog::pattern_formatter>();
formatter->add_flag<my_formatter_flag>('*').set_pattern("[%n] [%*] [%^%l%$] %v"); formatter->add_flag<my_formatter_flag>('*').set_pattern("[%n] [%*] [%^%l%$] %v");
spdlog::set_formatter(std::move(formatter)); // set the new formatter using spdlog::set_formatter(formatter) or logger->set_formatter(formatter)
//spdlog::set_formatter(std::move(formatter));
}
void file_events_example(){
// pass the spdlog::file_event_handlers_t to file sinks for open/close log file notifications
spdlog::file_event_handlers_t handlers;
handlers.before_open = [](spdlog::filename_t filename) {
spdlog::info("Before opening {}", filename);
};
handlers.after_open = [](spdlog::filename_t filename, std::FILE *fstream) {
spdlog::info("After opening {}", filename);
fputs("After opening\n", fstream);
};
handlers.before_close = [](spdlog::filename_t filename, std::FILE *fstream) {
spdlog::info("Before closing {}", filename);
fputs("Before closing\n", fstream);
};
handlers.after_close = [](spdlog::filename_t filename) {
spdlog::info("After closing {}", filename);
};
auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs/events-sample.txt", true, handlers);
spdlog::logger my_logger("some_logger", file_sink);
// or
// auto my_logger = spdlog::basic_logger_st("some_logger", "logs/events-sample.txt", true, handlers);
my_logger.info("Some log line");
} }