feat(symbolicator): Register manual kill switches for symbolicator's low priority queue (#28576)

This registers the two manual kill switches meant for ops use. As
mentioned in their description, adding a project to these switches
will either always or never redirect all symbolication events for
that project towards symbolicator's low priority queue. The low
priority queue provides "worse" guarantees on how quickly an
event will be processed, i.e. it will take longer for an event to be
completed in the low priority queue.

Author: relaxolotl

src/sentry/killswitches.py

@@ -77,6 +77,28 @@ class KillswitchInfo:
             "platform": "The event platform as defined in the event payload's platform field, or 'none'",
         },
     ),
+    "store.symbolicate-event-lpq-never": KillswitchInfo(
+        description="""
+        Never allow a project's symbolication events to be demoted to symbolicator's low priority queue.
+
+        If a project is in both store.symbolicate-event-lpq-never and store.symbolicate-event-lpq-always,
+        store.symbolicate-event-lpq-never will always take precedence.
+        """,
+        fields={
+            "project_id": "A project ID to filter events by.",
+        },
+    ),
+    "store.symbolicate-event-lpq-always": KillswitchInfo(
+        description="""
+        Always push a project's symbolication events to symbolicator's low priority queue.
+
+        If a project is in both store.symbolicate-event-lpq-never and store.symbolicate-event-lpq-always,
+        store.symbolicate-event-lpq-never will always take precedence.
+        """,
+        fields={
+            "project_id": "A project ID to filter events by.",
+        },
+    ),
 }
 
 

src/sentry/options/defaults.py

@@ -324,6 +324,8 @@
 register("store.load-shed-save-event-projects", type=Any, default=[])
 register("store.load-shed-process-event-projects", type=Any, default=[])
 register("store.load-shed-symbolicate-event-projects", type=Any, default=[])
+register("store.symbolicate-event-lpq-never", type=Sequence, default=[])
+register("store.symbolicate-event-lpq-always", type=Sequence, default=[])
 
 # Switch for more performant project counter incr
 register("store.projectcounter-modern-upsert-sample-rate", default=0.0)