id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
12369,"In boost::log, how to print extra header line when file rotation/rollover",xinyan.zhang@…,Andrey Semashev,"I have an extra header line to be written to log file (csv format). It has a special format. How to write this header line every time when log file is rotated/rollover? Thank you.
My code is like: 

   	const char *logHeaders = ""timestamp,thread,client,message"";
    ...

    boost::shared_ptr< sinks::text_file_backend > backend =
	boost::make_shared< sinks::text_file_backend >(
			logging::keywords::file_name = ""myfile_%5N.csv""
		    logging::keywords::rotation_size = 5 * 1024 * 1024,
			logging::keywords::time_based_rotation = sinks::file::rotation_at_time_point(12, 0, 0),
			);",Support Requests,closed,To Be Determined,log,Boost 1.61.0,Problem,invalid,,