Wt::WLogSink Class Reference

An abstract log sink. More...

#include <Wt/WLogSink.h>

Public Member Functions
virtual void	log (const std::string &type, const std::string &scope, const std::string &message) const noexcept=0
	Logs a message. More...
virtual bool	logging (const std::string &type, const std::string &scope) const noexcept
	Returns whether messages of the given type should be logged. More...

Detailed Description

An abstract log sink.

You can implement this to redirect Wt or Wt::Dbo's logging to another logging system.

For Wt, you can configure the logger on a WServer level using WServer::setCustomLogger(). For Wt::Dbo, you can configure the logger globally using Wt::Dbo::setCustomLogger().

See also

WServer::setCustomLogger()

Wt::Dbo::setCustomLogger()

Wt::Dbo::logToWt()

Member Function Documentation

log()

virtual void Wt::WLogSink::log ( const std::string &  type, const std::string &  scope, const std::string &  message  ) const

pure virtualnoexcept

Logs a message.

Parameters

type	The type of the log message (e.g. debug, info, ...)
scope	The scope of the message (e.g. WWidget, wthttp, ...)
message	The message itself (usually starts with the scope too)

logging()

virtual bool Wt::WLogSink::logging ( const std::string &  type, const std::string &  scope  ) const

virtualnoexcept

Returns whether messages of the given type should be logged.

Parameters

type	The type of the log message (e.g. debug, info, ...)
scope	The scope of the message (e.g. WWidget, wthttp, ...)

The default implementation always returns true. You can reimplement this as an optimization: if the underlying logger doesn't log messages of a certain type, then Wt does not need to generate the log message.