[Boost-bugs] [Boost C++ Libraries] #12369: In boost::log, how to print extra header line when file rotation/rollover

Subject: [Boost-bugs] [Boost C++ Libraries] #12369: In boost::log, how to print extra header line when file rotation/rollover
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-08-02 15:39:59

#12369: In boost::log, how to print extra header line when file rotation/rollover
------------------------------+---------------------
 Reporter:  xinyan.zhang@…    |      Owner:  andysem
     Type:  Support Requests  |     Status:  new
Milestone:  To Be Determined  |  Component:  log
  Version:  Boost 1.61.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+---------------------
 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),
                         );

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/12369>
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