Updated example to show daily logger usage

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
         //

example/example.cpp

@@ -28,20 +28,18 @@
 #include <iostream>
 #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
+        //Create console, multithreaded logger
-        spd::set_level(spd::level::debug);
-
-        // 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 << "..";
 }