As said before, an INFO
message should convey some amount of actual
information to the user. Saying, “hey, I’m here” normally doesn’t
qualify for that, so let’s change our messages to the DEBUG
level.
In execute
, use:
ANA_MSG_DEBUG ("in execute, on entry " << wk()->treeEntry());
In initialize
, use:
ANA_MSG_DEBUG ("in initialize");
Now compile and run again. You should see your messages disappear in
this run, because DEBUG
is below the default level of INFO
. In
production mode this is quite intended, but for the sake of our
tutorial let’s change the message level of our algorithm to make the
messages re-appear.
In ATestRun_eljob.cxx
, add this line where it says extra algorithm
configuration:
alg.setProperty ("OutputLevel", MSG::DEBUG);
and add this include at the beginning:
#include <AsgTools/MsgLevel.h>
If you use a python submission script (ATestRun_eljob.py
), just add:
alg.OutputLevel = ROOT.MSG.DEBUG
Then re-run and see your messages re-appear.
Note that if you create subtools in your algorithms, they will inherit their parents message level. So when you get to that part of the tutorial you may experience a rather large amount of output, in which case you want to change your default message level back to
INFO
. Certainly for production level code you’d want to useINFO
(or maybe evenWARNING
) as your default output level.