qpid::log::Logger::select() vs QPID_LOG_ENABLE

[Toralf Lund <to...@pgs.com>]

Hi

I'm trying to enable "full" logging in a QPid C++ 0.14 application via

export QPID_LOG_ENABLE="trace+"

but I don't really get a lot of extra information. I'm wondering, 
though, if the reason is that I also set up for somewhat more limited 
logging in the application, like this:

     qpid::log::Selector levels;

     levels.enable(qpid::log::critical);
     levels.enable(qpid::log::error);
     levels.enable(qpid::log::warning);

     qpid::log::Logger::instance().select(levels);

Will this actually override the QPID_LOG_ENABLE environment variable? If 
it does, is there any way to avoid this? I mean, maybe I could just 
check if the variable is there via getenv(), but:

 1. Ideally, I don't want the application code to make assumptions about
    variables decoded by the library.
 2. I may want to combine the settings, i.e. have the application "add
    to" the levels given via the environment.


- Toralf

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