feat(perf-issue): differentiate snuba referrer on group_type (#39796)

Modify the referrer when we query for Group Events.

Author: barkbarkimashark

src/sentry/api/endpoints/group_events.py

@@ -85,7 +85,11 @@ def _get_events_snuba(
             "start": start if start else default_start,
             "end": end if end else default_end,
         }
-        direct_hit_resp = get_direct_hit_response(request, query, params, "api.group-events", group)
+        referrer = f"api.group-events.{group.issue_category.name.lower()}"
+
+        direct_hit_resp = get_direct_hit_response(
+            request, query, params, f"{referrer}.direct-hit", group
+        )
         if direct_hit_resp:
             return direct_hit_resp
 
@@ -102,7 +106,7 @@ def _get_events_snuba(
         full = request.GET.get("full", False)
         data_fn = partial(
             eventstore.get_events if full else eventstore.get_unfetched_events,
-            referrer="api.group-events",
+            referrer=referrer,
             filter=snuba_filter,
             dataset=dataset,
         )

src/sentry/snuba/referrer.py

@@ -40,7 +40,10 @@ class Referrer(Enum):
     API_EVENTS_VITALS = "api.events.vitals"
     API_GROUP_HASHES_LEVELS_GET_LEVEL_NEW_ISSUES = "api.group_hashes_levels.get_level_new_issues"
     API_GROUP_HASHES_LEVELS_GET_LEVELS_OVERVIEW = "api.group_hashes_levels.get_levels_overview"
-    API_GROUP_EVENTS = "api.group-events"
+    API_GROUP_EVENTS_ERROR = "api.group-events.error"
+    API_GROUP_EVENTS_PERFORMANCE = "api.group-events.performance"
+    API_GROUP_EVENTS_ERROR_DIRECT_HIT = "api.group-events.error.direct-hit"
+    API_GROUP_EVENTS_PERFORMANCE_DIRECT_HIT = "api.group-events.performance.direct-hit"
     API_GROUP_HASHES = "api.group-hashes"
     API_ORGANIZATION_EVENT_STATS = "api.organization-event-stats"
     API_ORGANIZATION_EVENT_STATS_FIND_TOPN = "api.organization-event-stats.find-topn"