Make error.main_thread searchable on Discover and Issues page

src/sentry/api/event_search.py

@@ -1129,6 +1129,7 @@ def generic_visit(self, node, children):
     boolean_keys={
         "error.handled",
         "error.unhandled",
+        "error.main_thread",
         "stack.in_app",
         TEAM_KEY_TRANSACTION_ALIAS,
     },

src/sentry/data/samples/android-ndk.json

@@ -6,6 +6,7 @@
       {
         "type": "SIGSEGV",
         "value": "Segfault",
+        "thread_id": 1,
         "mechanism": {
           "type": "signalhandler",
           "synthetic": true,
@@ -132,6 +133,14 @@
       }
     ]
   },
+  "threads": {
+    "values": [
+      {
+        "id": 1,
+        "main": true
+      }
+    ]
+  },
   "platform": "native",
   "debug_meta": {
     "images": [

src/sentry/issues/search.py

@@ -256,7 +256,7 @@ def _update_profiling_search_filters(
     for sf in search_filters:
         # XXX: we replace queries on these keys to something that should return nothing since
         # profiling issues doesn't support stacktraces
-        if sf.key.name in ("error.unhandled", "error.handled"):
+        if sf.key.name in ("error.unhandled", "error.handled", "error.main_thread"):
             raise UnsupportedSearchQuery(
                 f"{sf.key.name} filter isn't supported for {GroupCategory.PROFILE.name}"
             )

src/sentry/rules/conditions/event_attribute.py

@@ -18,6 +18,7 @@
     "type": Columns.TYPE,
     "error.handled": Columns.ERROR_HANDLED,
     "error.unhandled": Columns.ERROR_HANDLED,
+    "error.main_thread": Columns.ERROR_MAIN_THREAD,
     "exception.type": Columns.ERROR_TYPE,
     "exception.value": Columns.ERROR_VALUE,
     "user.id": Columns.USER_ID,
@@ -118,6 +119,8 @@ def _get_attribute_values(self, event: GroupEvent, attr: str) -> Sequence[str]:
             return [getattr(e, path[1]) for e in event.interfaces["exception"].values]
 
         elif path[0] == "error":
+            # TODO: add support for error.main_thread
+
             if path[1] not in ("handled", "unhandled"):
                 return []
 

src/sentry/snuba/events.py

@@ -480,6 +480,14 @@ class Columns(Enum):
         discover_name="exception_stacks.mechanism_handled",
         alias="error.handled",
     )
+    ERROR_MAIN_THREAD = Column(
+        group_name="events.exception_main_thread",
+        event_name="exception_main_thread",
+        transaction_name=None,
+        discover_name="exception_main_thread",
+        issue_platform_name=None,
+        alias="error.main_thread",
+    )
     ERROR_RECEIVED = Column(
         group_name=None,
         event_name="received",

tests/sentry/rules/conditions/test_event_attribute.py

@@ -32,6 +32,7 @@ def get_event(self, **kwargs):
                                 }
                             ]
                         },
+                        "thread_id": 1,
                     }
                 ]
             },
@@ -57,6 +58,14 @@ def get_event(self, **kwargs):
                     "crash_type": "crash",
                 },
             },
+            "threads": {
+                "values": [
+                    {
+                        "id": 1,
+                        "main": True,
+                    },
+                ],
+            },
         }
         data.update(kwargs)
         event = self.store_event(data, project_id=self.project.id)

tests/snuba/api/endpoints/test_organization_events.py

@@ -1165,6 +1165,32 @@ def test_groupby_error_handled_and_unhandled(self):
             assert 1 == response.data["data"][1]["error.unhandled"]
             assert 1 == response.data["data"][1]["count()"]
 
+    def test_error_main_thread_condition(self):
+        prototype = self.load_data(platform="android-ndk")
+
+        prototype["timestamp"] = self.ten_mins_ago_iso
+        self.store_event(data=prototype, project_id=self.project.id)
+
+        with self.feature("organizations:discover-basic"):
+            query = {
+                "field": ["id", "project.id"],
+                "query": "error.main_thread:true",
+                "project": [self.project.id],
+            }
+            response = self.do_request(query)
+            assert response.status_code == 200, response.data
+            assert 1 == len(response.data["data"])
+
+        with self.feature("organizations:discover-basic"):
+            query = {
+                "field": ["id", "project.id"],
+                "query": "error.main_thread:false",
+                "project": [self.project.id],
+            }
+            response = self.do_request(query)
+            assert response.status_code == 200, response.data
+            assert 0 == len(response.data["data"])
+
     def test_implicit_groupby(self):
         self.store_event(
             data={

tests/snuba/search/test_backend.py

@@ -1973,6 +1973,42 @@ def test_message_negation(self):
 
         assert list(results) == list(results2)
 
+    def test_error_main_thread_true(self):
+        self.store_event(
+            data={
+                "fingerprint": ["put-me-in-group1"],
+                "event_id": "2" * 32,
+                "message": "something",
+                "timestamp": iso_format(self.base_datetime),
+                "exception": {
+                    "values": [
+                        {
+                            "type": "SyntaxError",
+                            "value": "hello world",
+                            "thread_id": 1,
+                        },
+                    ],
+                },
+                "threads": {
+                    "values": [
+                        {
+                            "id": 1,
+                            "main": True,
+                        },
+                    ],
+                },
+            },
+            project_id=self.project.id,
+        )
+
+        results = self.make_query(
+            projects=[self.project],
+            search_filter_query="error.handled:1",
+            sort_by="date",
+        )
+
+        assert len(results) == 1
+
 
 class EventsTransactionsSnubaSearchTest(SharedSnubaTest):
     @property
@@ -2468,7 +2504,31 @@ def test_rejected_filters(self):
                 count_hits=True,
             )
 
-            assert list(results) == list(results2) == list(result3) == list(results4) == []
+            results5 = self.make_query(
+                projects=[self.project],
+                search_filter_query="issue.category:profile error.main_thread:0",
+                sort_by="date",
+                limit=1,
+                count_hits=True,
+            )
+
+            results6 = self.make_query(
+                projects=[self.project],
+                search_filter_query="issue.category:profile error.main_thread:1",
+                sort_by="date",
+                limit=1,
+                count_hits=True,
+            )
+
+            assert (
+                list(results)
+                == list(results2)
+                == list(result3)
+                == list(results4)
+                == list(results5)
+                == list(results6)
+                == []
+            )
 
 
 class CdcEventsSnubaSearchTest(SharedSnubaTest):