fix(event): use fallback for accepted time (#2335)

fix(event): use fallback for accepted time

When submitting failed Copr builds to the Pushgateway, we're using time of accepting the task, in some cases we don't have time of accepting, so use ‹created_at› as a fallback.
Fixes #2258

Not sure about this change, since for the last occurrence in Sentry the difference between the reported time of failure and created_at is 5 minutes. I can the ‹task_accepted_time› only in DB, but this is happening even before the build starts, cause it's coming from an issue caused by submitting the build, so I would say that we should use the datetime.now()? But OTOH it doesn't feel like it's skipping the Celere queue and being handled right away.

Reviewed-by: Maja Massarini

packit_service/worker/events/event.py

@@ -113,11 +113,12 @@ def from_event_dict(cls, event: dict):
         commit_sha = event.get("commit_sha")
         identifier = event.get("identifier")
         issue_id = event.get("issue_id")
+
+        time = event.get("task_accepted_time")
         task_accepted_time = (
-            datetime.fromtimestamp(event.get("task_accepted_time"), timezone.utc)
-            if event.get("task_accepted_time")
-            else None
+            datetime.fromtimestamp(time, timezone.utc) if time else None
         )
+
         build_targets_override = event.get("build_targets_override")
         tests_targets_override = event.get("tests_targets_override")
         branches_override = event.get("branches_override")

packit_service/worker/helpers/build/copr_build.py

@@ -394,6 +394,17 @@ def monitor_not_submitted_copr_builds(self, number_of_builds: int, reason: str):
         Measure the time it took to set the failed status in case of event (e.g. failed SRPM)
         that prevents Copr build to be submitted.
         """
+
+        # NOTE: When there is no ‹task_accepted_time›, we skip the submission to
+        # the metrics, since there is no delay between the submission and
+        # failure. We could probably track those by a separate metric as
+        # suggested by Maja in the PR.
+        if self.metadata.task_accepted_time is None:
+            logger.warning(
+                "No task_accepted_time for failed Copr build with reason: %s", reason
+            )
+            return
+
         time = elapsed_seconds(
             begin=self.metadata.task_accepted_time, end=datetime.now(timezone.utc)
         )