Add systemd service+timer

[okurz]

Related progress issue: https://progress.opensuse.org/issues/188706

[aylen384]

As we have two instances of this service with two config files (one for o3 and one for osd) it would make sense to create an openqa_bugfetcher@.service supplying the name of the config file via %i.

Also note that for o3 we are only running every 10 hours while for osd we run every 10 minutes.
That is because for osd we actually only process bugrefs that were not updated within a certain timeframe,
while for o3 we only can query public bugs (not to leak internal data) so private bugs will not get updated and therefore retried with every call of bugfetcher. The 10 hour interval is there to reduce unneccesary load on bugzilla.
A switch from cron to systemd timers needs to take this into account.

# minute (0-59),
# |      hour (0-23),
# |      |       day of the month (1-31),
# |      |       |       month of the year (1-12),
# |      |       |       |       day of the week (0-6 with 0=Sunday).
# |      |       |       |       |       user  commands

*/10     *       *       *       *       …  (date;fetch_openqa_bugs)> /tmp/fetch_openqa_bugs_osd.log
1        */10    *       *       *       …  (date;fetch_openqa_bugs /etc/openqa/bugfetcher_o3.conf) > /tmp/fetch_openqa_bugs_o3.log

[okurz]

As we have two instances of this service with two config files (one for o3 and one for osd) it would make sense to create an openqa_bugfetcher@.service supplying the name of the config file via %i.

Also note that for o3 we are only running every 10 hours while for osd we run every 10 minutes. That is because for osd we actually only process bugrefs that were not updated within a certain timeframe, while for o3 we only can query public bugs (not to leak internal data) so private bugs will not get updated and therefore retried with every call of bugfetcher. The 10 hour interval is there to reduce unneccesary load on bugzilla. A switch from cron to systemd timers needs to take this into account.

# minute (0-59),
# |      hour (0-23),
# |      |       day of the month (1-31),
# |      |       |       month of the year (1-12),
# |      |       |       |       day of the week (0-6 with 0=Sunday).
# |      |       |       |       |       user  commands

*/10     *       *       *       *       …  (date;fetch_openqa_bugs)> /tmp/fetch_openqa_bugs_osd.log
1        */10    *       *       *       …  (date;fetch_openqa_bugs /etc/openqa/bugfetcher_o3.conf) > /tmp/fetch_openqa_bugs_o3.log

Changed to openqa_bugfetcher@.service. But that means that the default of openqa_bugfetcher.conf will not be usable for this service. Anyway for our specific instance I would then instantiate two services "osd" and "o3", rename the /etc/openqa/bugfetcher.conf to /etc/openqa/bugfetcher_osd.conf and of course use the custom time specifications for both.

[aylen384]

Sounds good

[aylen384]

Changed to openqa_bugfetcher@.service.

Did you forget to push? Because there is no template service in the diff.

[okurz]

Changed to openqa_bugfetcher@.service.

Did you forget to push? Because there is no template service in the diff.

good you realized. I actually had the issue of outdated plain-git protocol in .git/config