Allow for bugzilla management to use a minimum threshold for 'reopene…

…d bugs' (#8144)

tests/conftest.py

@@ -324,6 +324,11 @@ def test_job(eleven_job_blobs, create_jobs):
     return create_jobs([job])[0]
 
 
+@pytest.fixture
+def test_jobs(eleven_job_blobs_new_date, create_jobs):
+    return create_jobs(eleven_job_blobs_new_date)
+
+
 @pytest.fixture
 def test_two_jobs_tc_metadata(eleven_job_blobs_new_date, create_jobs):
     job_1, job_2 = eleven_job_blobs_new_date[0:2]

tests/etl/test_bugzilla.py

@@ -19,29 +19,50 @@ def test_bz_api_process(mock_bugzilla_api_request):
     assert Bugscache.objects.count() == 28
 
 
-def test_bz_reopen_bugs(request, mock_bugzilla_reopen_request, client, test_job, test_user, bugs):
+@pytest.mark.parametrize(
+    "minimum_failures_to_reopen",
+    [1, 3],
+)
+def test_bz_reopen_bugs(
+    request,
+    mock_bugzilla_reopen_request,
+    client,
+    test_jobs,
+    test_user,
+    bugs,
+    minimum_failures_to_reopen,
+):
     """
     Test expected bugs get reopened.
     """
-    bug = bugs[0]
     client.force_authenticate(user=test_user)
+    request.config.cache.set("reopened_bugs", {})
 
     incomplete_bugs = [bug for bug in bugs if bug.resolution == "INCOMPLETE"]
     not_incomplete_bugs = [bug for bug in bugs if bug.resolution != "INCOMPLETE"]
+    idx = 0
     for bug in [
-        not_incomplete_bugs[0],
-        not_incomplete_bugs[2],
         incomplete_bugs[0],
         incomplete_bugs[2],
+        incomplete_bugs[0],
+        incomplete_bugs[2],
+        incomplete_bugs[0],
+        not_incomplete_bugs[0],
+        not_incomplete_bugs[2],
     ]:
-        submit_obj = {"job_id": test_job.id, "bug_id": bug.id, "type": "manual"}
+        submit_obj = {"job_id": test_jobs[idx].id, "bug_id": bug.id, "type": "manual"}
 
         client.post(
-            reverse("bug-job-map-list", kwargs={"project": test_job.repository.name}),
+            reverse("bug-job-map-list", kwargs={"project": test_jobs[idx].repository.name}),
             data=submit_obj,
         )
 
+        idx += 1
+        if idx % 11 == 0:
+            idx = 0
+
     process = BzApiBugProcess()
+    process.minimum_failures_to_reopen = minimum_failures_to_reopen
     process.run()
 
     reopened_bugs = request.config.cache.get("reopened_bugs", None)
@@ -53,19 +74,21 @@ def test_bz_reopen_bugs(request, mock_bugzilla_reopen_request, client, test_job,
             {
                 "status": "REOPENED",
                 "comment": {
-                    "body": "New failure instance: https://treeherder.mozilla.org/logviewer?job_id=1&repo=mozilla-central"
+                    "body": "New failure instance: https://treeherder.mozilla.org/logviewer?job_id=5&repo=mozilla-central"
                 },
                 "comment_tags": "treeherder",
-            }
+            },
         ),
-        "https://thisisnotbugzilla.org/rest/bug/404": json.dumps(
+    }
+
+    if process.minimum_failures_to_reopen == 1:
+        expected_reopen_attempts["https://thisisnotbugzilla.org/rest/bug/404"] = json.dumps(
             {
                 "status": "REOPENED",
                 "comment": {
-                    "body": "New failure instance: https://treeherder.mozilla.org/logviewer?job_id=1&repo=mozilla-central"
+                    "body": "New failure instance: https://treeherder.mozilla.org/logviewer?job_id=4&repo=mozilla-central"
                 },
                 "comment_tags": "treeherder",
-            }
-        ),
-    }
+            },
+        )
     assert reopened_bugs == expected_reopen_attempts

treeherder/etl/bugzilla.py

@@ -4,7 +4,7 @@
 import dateutil.parser
 from datetime import datetime, timedelta
 from django.conf import settings
-from django.db.models import Max
+from django.db.models import Count, Max
 
 from treeherder.model.models import Bugscache, BugJobMap
 from treeherder.utils.github import fetch_json
@@ -17,7 +17,7 @@ def reopen_request(url, method, headers, json):
     make_request(url, method=method, headers=headers, json=json)
 
 
-def reopen_intermittent_bugs():
+def reopen_intermittent_bugs(minimum_failures_to_reopen=1):
     # Don't reopen bugs from non-production deployments.
     if settings.BUGFILER_API_KEY is None:
         return
@@ -29,9 +29,11 @@ def reopen_intermittent_bugs():
     # https://github.com/mozilla/relman-auto-nag/blob/c7439e247677333c1cd8c435234b3ef3adc49680/auto_nag/scripts/close_intermittents.py#L17
     recent_days = 7
     recently_used_bugs = set(
-        BugJobMap.objects.filter(created__gt=datetime.now() - timedelta(recent_days)).values_list(
-            "bug_id", flat=True
-        )
+        BugJobMap.objects.filter(created__gt=(datetime.now() - timedelta(recent_days)))
+        .values("bug_id")
+        .annotate(num_failures=Count("bug_id"))
+        .filter(num_failures__gte=minimum_failures_to_reopen)
+        .values_list("bug_id", flat=True)
     )
     bugs_to_reopen = incomplete_bugs & recently_used_bugs
 
@@ -90,6 +92,8 @@ def fetch_intermittent_bugs(additional_params, limit, duplicate_chain_length):
 
 
 class BzApiBugProcess:
+    minimum_failures_to_reopen = 1
+
     def run(self):
         year_ago = datetime.utcnow() - timedelta(days=365)
         last_change_time_max = (
@@ -302,4 +306,4 @@ def run(self):
                 modified=last_change_time_max
             )
 
-        reopen_intermittent_bugs()
+        reopen_intermittent_bugs(self.minimum_failures_to_reopen)