drop error log for when a subscriber does not exist
Checking for existence of a subscriber and seeing that there is none is not
inherently an error. However, osmo-hlr currently logs on all occasions:
DAUC ERROR Cannot read subscriber from db: MSISDN='1001': No such subscriber
This spams the ERROR log level. Particularly when a D-GSM setup does subscriber
existence checks for every incoming mslookup request, that potentially creates
constant ERROR logging.
The "No such subscriber" part comes from db_sel(), which might also return an
sqlite3_errmsg(). We still want those sqlite3_errmsg()es in the ERROR log.
Hence print an ERROR log only if db_sel() returns an rc != -ENOENT.
Change-Id: I5044e9b4519b948edc4e451cef0f7830d315619b
2 files changed