Log attributes passed as arguments to open_record are ignored

[Thomas M. Bernal <tbernal@…>]

Why does boost::log::sources::basic_logger::open_record_unlocked(ArgsT const&) ignore its argument when calling boost::log::core::open_record()?

    /*!
     * Unlocked \c open_record
     */
    template< typename ArgsT >
    record open_record_unlocked(ArgsT const&)
    {
        return m_pCore->open_record(m_Attributes);
    }

The boost::log::sources::logger_mt::open_record() eventually passes the attributes to this function where they are summarily ignored. How is something as fundamental to the Boost Log library as BOOST_LOG_WITH_PARAMETERS() supposed to work! It doesn't, by the way.

[Thomas M. Bernal <tbernal@…>]

It seems the severity_logger cheats!

    record open_record_unlocked(ArgsT const& args)
    {
        m_SeverityAttr.set_value(args[keywords::severity | m_DefaultSeverity]);
        return base_type::open_record_unlocked(args);
    }

So you are telling me that if I want to add attributes in the call to open_record that I need to implement my own logger and cheat? This is not the way the library appears to be in the tutorial. The tutorial makes it seem that anything passed into open_record will get combined with the logger's attributes before being sent to the core. This is not only very deceiving but highly cryptic.

[Thomas M. Bernal <tbernal@…>]

Never mind. They're parameters not attributes. That was not clear from the documentation, and my not being familiar with boost parameters.