93 lines
2.3 KiB
Markdown
93 lines
2.3 KiB
Markdown
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Overview
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--------
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"Logging is the act of keeping a log. In the simplest case, messages are written to a single log file.
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A transaction log is a file (i.e., log) of the communications (i.e., transactions) between a system and the users of that system,[2] or a data collection method that automatically captures the type, content, or time of transactions made by a person from a terminal with that system." -- [Wikipedia](https://en.wikipedia.org/wiki/Log_file)
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Example
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-------
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```C++
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#include <memory>
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#include <cstdio>
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#include <cstdarg>
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#include <cstdlib>
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#include <restbed>
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using namespace std;
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using namespace restbed;
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class CustomLogger : public Logger
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{
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public:
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void stop( void )
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{
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return;
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}
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void start( const shared_ptr< const Settings >& )
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{
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return;
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}
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void log( const Level, const char* format, ... )
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{
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va_list arguments;
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va_start( arguments, format );
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vfprintf( stderr, format, arguments );
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fprintf( stderr, "\n" );
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va_end( arguments );
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}
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void log_if( bool expression, const Level level, const char* format, ... )
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{
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if ( expression )
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{
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va_list arguments;
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va_start( arguments, format );
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log( level, format, arguments );
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va_end( arguments );
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}
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}
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};
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void get_method_handler( const shared_ptr< Session > session )
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{
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session->close( OK, "Hello, World!", { { "Content-Length", "13" } } );
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}
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int main( const int, const char** )
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{
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auto resource = make_shared< Resource >( );
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resource->set_path( "/resource" );
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resource->set_method_handler( "GET", get_method_handler );
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auto settings = make_shared< Settings >( );
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settings->set_port( 1984 );
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settings->set_default_header( "Connection", "close" );
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Service service;
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service.publish( resource );
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service.set_logger( make_shared< CustomLogger >( ) );
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service.start( settings );
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return EXIT_SUCCESS;
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}
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```
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Build
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-----
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> $ clang++ -o example example.cpp -l restbed
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Execution
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---------
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> $ ./example
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>
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> $ curl -w'\n' -v -XGET 'http://localhost:1984/resource'
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