Add W3693 for aurora cluster properties

src/cfnlint/data/schemas/extensions/aws_rds_dbcluster/aurora.json

@@ -20,9 +20,6 @@
    "Iops": false,
    "MonitoringInterval": false,
    "MonitoringRoleArn": false,
-   "PerformanceInsightsEnabled": false,
-   "PerformanceInsightsKmsKeyId": false,
-   "PerformanceInsightsRetentionPeriod": false,
    "PubliclyAccessible": false,
    "StorageType": {
     "if": {

src/cfnlint/data/schemas/extensions/aws_rds_dbcluster/aurora_warning.json

@@ -0,0 +1,30 @@
+{
+ "if": {
+  "properties": {
+   "Engine": {
+    "enum": [
+     "aurora-mysql",
+     "aurora-postgresql"
+    ],
+    "type": "string"
+   },
+   "EngineMode": {
+    "enum": [
+     "serverless"
+    ],
+    "type": "string"
+   }
+  },
+  "required": [
+   "Engine",
+   "EngineMode"
+  ]
+ },
+ "then": {
+  "properties": {
+   "PerformanceInsightsEnabled": false,
+   "PerformanceInsightsKmsKeyId": false,
+   "PerformanceInsightsRetentionPeriod": false
+  }
+ }
+}

src/cfnlint/rules/resources/rds/DbClusterAuroraWarning.py

@@ -0,0 +1,45 @@
+"""
+Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+SPDX-License-Identifier: MIT-0
+"""
+
+from __future__ import annotations
+
+from typing import Any
+
+import cfnlint.data.schemas.extensions.aws_rds_dbcluster
+from cfnlint.jsonschema import ValidationResult, Validator
+from cfnlint.rules.jsonschema.CfnLintJsonSchema import CfnLintJsonSchema, SchemaDetails
+
+
+class DbClusterAuroraWarning(CfnLintJsonSchema):
+    id = "W3693"
+    shortdesc = "Validate Aurora DB cluster configuration for ignored properties"
+    description = (
+        "When creating an Aurora DB Cluster there are fields that "
+        "will allow for successful deployment but are ignored"
+    )
+    tags = ["resources"]
+    source_url = "https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-rds-dbcluster.html#cfn-rds-dbcluster-engineversion"
+
+    def __init__(self) -> None:
+        super().__init__(
+            keywords=["Resources/AWS::RDS::DBCluster/Properties"],
+            schema_details=SchemaDetails(
+                module=cfnlint.data.schemas.extensions.aws_rds_dbcluster,
+                filename="aurora_warning.json",
+            ),
+            all_matches=True,
+        )
+
+    def validate(
+        self, validator: Validator, keywords: Any, instance: Any, schema: dict[str, Any]
+    ) -> ValidationResult:
+        for err in super().validate(validator, keywords, instance, schema):
+            if err.schema is False:
+                err.message = (
+                    "Additional properties are not allowed "
+                    f"{err.path[0]!r} when creating Aurora cluster"
+                )
+
+            yield err

test/unit/rules/resources/rds/test_db_cluster_aurora_warning.py

@@ -0,0 +1,67 @@
+"""
+Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+SPDX-License-Identifier: MIT-0
+"""
+
+from collections import deque
+
+import pytest
+
+from cfnlint.jsonschema import ValidationError
+from cfnlint.rules.resources.rds.DbClusterAuroraWarning import DbClusterAuroraWarning
+
+
+@pytest.fixture(scope="module")
+def rule():
+    rule = DbClusterAuroraWarning()
+    yield rule
+
+
+@pytest.mark.parametrize(
+    "instance,expected",
+    [
+        (
+            {"Engine": "aurora-mysql", "EngineMode": "serverless"},
+            [],
+        ),
+        (
+            {
+                "Engine": "aurora-mysql",
+                "EngineMode": "provisioned",
+                "PerformanceInsightsEnabled": True,
+            },
+            [],
+        ),
+        (
+            {
+                "Engine": "aurora-mysql",
+                "PerformanceInsightsEnabled": True,
+            },
+            [],
+        ),
+        (
+            {
+                "Engine": "aurora-mysql",
+                "EngineMode": "serverless",
+                "PerformanceInsightsEnabled": True,
+            },
+            [
+                ValidationError(
+                    (
+                        "Additional properties are not allowed "
+                        "'PerformanceInsightsEnabled' when creating Aurora cluster"
+                    ),
+                    rule=DbClusterAuroraWarning(),
+                    path=deque(["PerformanceInsightsEnabled"]),
+                    validator=None,
+                    schema_path=deque(
+                        ["then", "properties", "PerformanceInsightsEnabled"]
+                    ),
+                ),
+            ],
+        ),
+    ],
+)
+def test_validate(instance, expected, rule, validator):
+    errs = list(rule.validate(validator, "", instance, {}))
+    assert errs == expected, f"Expected {expected} got {errs}"