Re: [boost] [log] Comments

Subject: Re: [boost] [log] Comments
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-03-15 15:50:59

AMDG

Vladimir Prus wrote:
> On Monday 15 March 2010 22:07:57 Roland Bock wrote:
>   
>> After some preparation in the init function, developers can do the 
>> following:
>>
>>     src::severity_channel_logger<severity_level> lg1(keywords::channel = "FirstComponent");
>>
>>     BOOST_LOG_SEV(lg1, trace) << "A trace severity message";
>>     BOOST_LOG_SEV(lg1, debug) << "A debug severity message";
>>
>> I plan to hide most of the  first line in a typedef and a convenience 
>> function.
>>     
>
> What I don't like about this solution is that it requires that you define a
> new object for every componen, which can be inconvenient, including for
> header-only libraries. What I would like to have is something like
>
>
> 	// myproject.hpp
> 	#ifndef COMPONENT
> 	#define COMPONENT "unspecified"
> 	#endif
>
> 	#define DEBUG BOOST_LOG_XXX(mygloballogger, COMPONENT, debug)
>   

I guess that what I'd like is a way to specify arbitrary attributes when
logging, so BOOST_LOG_XXX would be defined like

#define BOOST_LOG_XXX(lg, component, severity) BOOST_LOG_WITH_ATTRS(lg, 
("Severity", severity)("Channel", component))

In Christ,
Steven Watanabe