fix(spansIndexed): Lowercase span op and description filters (#67753)

- Lower cases the filters on op and description since they're lowercased
on ingest that way they can be easily filtered regardless of their case
when sent to us

src/sentry/search/events/constants.py

@@ -49,6 +49,8 @@ SPAN_DOMAIN_ALIAS = "span.domain"
 SPAN_DOMAIN_SEPARATOR = ","
 UNIQUE_SPAN_DOMAIN_ALIAS = "unique.span_domains"
 SPAN_IS_SEGMENT_ALIAS = "span.is_segment"
+SPAN_OP = "span.op"
+SPAN_DESCRIPTION = "span.description"
 
 
 class ThresholdDict(TypedDict):

src/sentry/search/events/datasets/filter_aliases.py

@@ -299,3 +299,13 @@ def device_class_converter(
     if value not in device_class_map:
         raise InvalidSearchQuery(f"{value} is not a supported device.class")
     return Condition(builder.column("device.class"), Op.IN, list(device_class_map[value]))
+
+
+def lowercase_search(
+    builder: builder.QueryBuilder, search_filter: SearchFilter
+) -> WhereType | None:
+    """Convert the search value to lower case"""
+    value = search_filter.value.value
+    return builder.default_filter_converter(
+        SearchFilter(search_filter.key, search_filter.operator, SearchValue(value.lower()))
+    )

src/sentry/search/events/datasets/spans_indexed.py

@@ -39,6 +39,12 @@ class SpansIndexedDatasetConfig(DatasetConfig):
             constants.PROJECT_NAME_ALIAS: self._project_slug_filter_converter,
             constants.DEVICE_CLASS_ALIAS: self._device_class_filter_converter,
             constants.SPAN_IS_SEGMENT_ALIAS: filter_aliases.span_is_segment_converter,
+            constants.SPAN_OP: lambda search_filter: filter_aliases.lowercase_search(
+                self.builder, search_filter
+            ),
+            constants.SPAN_DESCRIPTION: lambda search_filter: filter_aliases.lowercase_search(
+                self.builder, search_filter
+            ),
         }
 
     @property

tests/snuba/api/endpoints/test_organization_events_span_indexed.py

@@ -191,3 +191,36 @@ class OrganizationEventsSpanIndexedEndpointTest(OrganizationEventsEndpointTestBa
         assert data[0]["browser.name"] == "Chrome"
         assert data[0]["origin.transaction"] == "/pageloads/"
         assert meta["dataset"] == "spansIndexed"
+
+    def test_span_op_casing(self):
+        self.store_spans(
+            [
+                self.create_span(
+                    {
+                        "sentry_tags": {
+                            "replay_id": "abc123",
+                            "browser.name": "Chrome",
+                            "transaction": "/pageloads/",
+                            "op": "this is a transaction",
+                        }
+                    },
+                    start_ts=self.ten_mins_ago,
+                ),
+            ]
+        )
+        response = self.do_request(
+            {
+                "field": ["span.op", "count()"],
+                "query": 'span.op:"ThIs Is a TraNSActiON"',
+                "orderby": "count()",
+                "project": self.project.id,
+                "dataset": "spansIndexed",
+            }
+        )
+
+        assert response.status_code == 200, response.content
+        data = response.data["data"]
+        meta = response.data["meta"]
+        assert len(data) == 1
+        assert data[0]["span.op"] == "this is a transaction"
+        assert meta["dataset"] == "spansIndexed"