Project: datamanagement
Issue DM-4616: Migrate Qserv code to stream-based logging
Migrate Qserv code from LOGF_* to LOGS_*. While doing it, we will also revisit logging levels: in particular we are abusing INFO, most of what is now in INFO should be on DEBUG, in some places where INFO is used to cover unusual conditions, it should go to WARNING. Further, we will unify how we initialize logging structures. Per discussions at 2015/12/09 Qserv meeting, we like best {code}LOG_LOGGER _log = LOG_GET("lsst.qserv.."){code} in anonymous namespace in cc files. Logging from .hh files is strongly discouraged. This involves changing ~600 places.
Story points: 10