chore: Prevent users from creating txn alerts thru api

src/sentry/snuba/snuba_query_validator.py

@@ -352,6 +352,13 @@ def _validate_time_window(self, value: int, dataset: Dataset):
         return time_window_seconds
 
     def _validate_performance_dataset(self, dataset):
+        if features.has(
+            "organizations:discover-saved-queries-deprecation", self.context["organization"]
+        ):
+            raise serializers.ValidationError(
+                f"The {dataset.value} dataset is being deprecated. Please use the 'events_analytics_platform' dataset with the `is_transaction:true` filter instead."
+            )
+
         if dataset != Dataset.Transactions:
             return dataset
 

tests/sentry/incidents/endpoints/test_organization_alert_rule_index.py

@@ -1693,6 +1693,47 @@ def test_metric_alert_limit_unlimited_plan(self) -> None:
         alert_rule = AlertRule.objects.get(id=resp.data["id"])
         assert alert_rule.name == "JustAValidTestRule"
 
+    def test_eap_alert_with_invalid_time_window(self) -> None:
+        data = deepcopy(self.alert_rule_dict)
+        data["dataset"] = "events_analytics_platform"
+        data["alertType"] = "eap_metrics"
+        data["timeWindow"] = 1
+        with self.feature(["organizations:incidents", "organizations:performance-view"]):
+            resp = self.get_error_response(self.organization.slug, status_code=400, **data)
+        assert (
+            resp.data["nonFieldErrors"][0]
+            == "Invalid Time Window: Time window for this alert type must be at least 5 minutes."
+        )
+
+    def test_transactions_dataset_deprecation_validation(self) -> None:
+        data = deepcopy(self.alert_rule_dict)
+        data["dataset"] = "transactions"
+        data["alertType"] = "performance"
+
+        with self.feature(
+            ["organizations:incidents", "organizations:discover-saved-queries-deprecation"]
+        ):
+            resp = self.get_error_response(self.organization.slug, status_code=400, **data)
+        assert (
+            resp.data["dataset"][0]
+            == "The transactions dataset is being deprecated. Please use the 'events_analytics_platform' dataset with the `is_transaction:true` filter instead."
+        )
+
+    def test_generic_metrics_dataset_deprecation_validation(self) -> None:
+        data = deepcopy(self.alert_rule_dict)
+        data["dataset"] = "generic_metrics"
+        data["alertType"] = "performance"
+        data["aggregate"] = "p95(transaction.duration)"
+
+        with self.feature(
+            ["organizations:incidents", "organizations:discover-saved-queries-deprecation"]
+        ):
+            resp = self.get_error_response(self.organization.slug, status_code=400, **data)
+        assert (
+            resp.data["dataset"][0]
+            == "The generic_metrics dataset is being deprecated. Please use the 'events_analytics_platform' dataset with the `is_transaction:true` filter instead."
+        )
+
 
 @freeze_time()
 class AlertRuleCreateEndpointTestCrashRateAlert(AlertRuleIndexBase):
@@ -1821,18 +1862,6 @@ def test_crash_rate_alerts_kicks_off_slack_async_job(
         }
         mock_find_channel_id_for_alert_rule.assert_called_once_with(kwargs=kwargs)
 
-    def test_eap_alert_with_invalid_time_window(self) -> None:
-        data = deepcopy(self.alert_rule_dict)
-        data["dataset"] = "events_analytics_platform"
-        data["alertType"] = "eap_metrics"
-        data["timeWindow"] = 1
-        with self.feature(["organizations:incidents", "organizations:performance-view"]):
-            resp = self.get_error_response(self.organization.slug, status_code=400, **data)
-        assert (
-            resp.data["nonFieldErrors"][0]
-            == "Invalid Time Window: Time window for this alert type must be at least 5 minutes."
-        )
-
 
 @freeze_time()
 class MetricsCrashRateAlertCreationTest(AlertRuleCreateEndpointTestCrashRateAlert):

tests/sentry/incidents/endpoints/test_serializers.py

@@ -187,6 +187,37 @@ def test_span_alert_time_window_validation(self) -> None:
             },
         )
 
+    def test_transactions_dataset_deprecation_validation(self) -> None:
+        """Test that transactions dataset is rejected when discover-saved-queries-deprecation flag is enabled"""
+        params = self.valid_transaction_params.copy()
+
+        with self.feature("organizations:discover-saved-queries-deprecation"):
+            self.run_fail_validation_test(
+                params,
+                {
+                    "dataset": [
+                        "The transactions dataset is being deprecated. Please use the 'events_analytics_platform' dataset with the `is_transaction:true` filter instead."
+                    ]
+                },
+            )
+
+    def test_generic_metrics_dataset_deprecation_validation(self) -> None:
+        """Test that generic_metrics dataset is rejected when discover-saved-queries-deprecation flag is enabled"""
+        params = self.valid_params.copy()
+        params["dataset"] = Dataset.PerformanceMetrics.value
+        params["event_types"] = [SnubaQueryEventType.EventType.TRANSACTION.name.lower()]
+        params["aggregate"] = "p95(transaction.duration)"
+
+        with self.feature("organizations:discover-saved-queries-deprecation"):
+            self.run_fail_validation_test(
+                params,
+                {
+                    "dataset": [
+                        "The generic_metrics dataset is being deprecated. Please use the 'events_analytics_platform' dataset with the `is_transaction:true` filter instead."
+                    ]
+                },
+            )
+
     def test_dataset(self) -> None:
         invalid_values = ["Invalid dataset, valid values are %s" % [item.value for item in Dataset]]
         self.run_fail_validation_test({"dataset": "events_wrong"}, {"dataset": invalid_values})