Occasional attempts to download wrong p_astro file

According to flower (screenshot below), a task tried to download pycbc.p_astro.json from G800030 (a gstlal event), and gstlal.p_astro.json from G800132 (a pycbc event). Preliminary notices are still getting sent out, e.g. for S221208gc, so this can't be happening for every event.

changed milestone to %O4

assigned to @cody.messick

I think this is occurring pretty frequently.

This download call from the an MBTA event says

requests.exceptions.HTTPError: 404 Client Error:
Not Found for url: https://gracedb-playground.ligo.org/api/events/G813606/files/MBTA.p_astro.json

This is another MBTA event: https://gracedb-playground.ligo.org/api/events/G813599 for which this download call says

requests.exceptions.HTTPError: 404 Client Error:
Not Found for url: https://gracedb-playground.ligo.org/api/events/G813599/files/pycbc.p_astro.json

So there are two issues: the upper/lower case issue which is easily solved, but then the attempt to download a pycbc.p_astro.json is a bug.

mentioned in merge request !1045 (merged)

I digged further into this and it happens when the final preferred event, during clean up, has a different pipeline compared to the preferred event pipeline in the first preliminary alert. There is a bug in !1012 (merged). I have a patch !1045 (merged). The situation will not be caught by first2year MDC since all of them have pipeline = gstlal.

closed with commit 93933928

closed with merge request !1045 (merged)