Defers setting Database Insights until modify if global_cluster_identifier is set

Author: gdavison

internal/service/rds/cluster.go

@@ -1179,7 +1179,15 @@ func resourceClusterCreate(ctx context.Context, d *schema.ResourceData, meta any
 		}
 
 		if v := d.Get("database_insights_mode"); v.(string) != "" {
-			input.DatabaseInsightsMode = types.DatabaseInsightsMode(v.(string))
+			// If the cluster is part of a global cluster, defer Database Insights settings
+			// to the modifyDbClusterInput to prevent them from being reset.
+			if _, ok := d.GetOk("global_cluster_identifier"); ok {
+				modifyDbClusterInput.DatabaseInsightsMode = types.DatabaseInsightsMode(v.(string))
+				requiresModifyDbCluster = true
+			} else {
+				input.DatabaseInsightsMode = types.DatabaseInsightsMode(v.(string))
+			}
+
 		}
 
 		if v := d.Get(names.AttrDatabaseName); v.(string) != "" {

internal/service/rds/cluster_test.go

@@ -3363,6 +3363,46 @@ func TestAccRDSCluster_databaseInsightsMode_defaultKMSKey_create(t *testing.T) {
 	})
 }
 
+func TestAccRDSCluster_GlobalClusterIdentifier_databaseInsightsMode_defaultKMSKey_create(t *testing.T) {
+	ctx := acctest.Context(t)
+	if testing.Short() {
+		t.Skip("skipping long-running test in short mode")
+	}
+
+	var dbCluster types.DBCluster
+	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
+	resourceName := "aws_rds_cluster.test"
+
+	kmsKeyIDExpectNoChange := statecheck.CompareValue(compare.ValuesSame())
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:                 func() { acctest.PreCheck(ctx, t) },
+		ErrorCheck:               acctest.ErrorCheck(t, names.RDSServiceID),
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
+		CheckDestroy:             testAccCheckClusterDestroy(ctx),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccClusterConfig_GlobalClusterIdentifier_databaseInsightsMode_defaultKMSKey(rName, "advanced", true, "465"),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckClusterExists(ctx, resourceName, &dbCluster),
+				),
+				ConfigPlanChecks: resource.ConfigPlanChecks{
+					PreApply: []plancheck.PlanCheck{
+						plancheck.ExpectResourceAction(resourceName, plancheck.ResourceActionCreate),
+					},
+				},
+				ConfigStateChecks: []statecheck.StateCheck{
+					statecheck.ExpectKnownValue(resourceName, tfjsonpath.New("database_insights_mode"), knownvalue.StringExact("advanced")),
+					statecheck.ExpectKnownValue(resourceName, tfjsonpath.New("performance_insights_enabled"), knownvalue.Bool(true)),
+					kmsKeyIDExpectNoChange.AddStateValue("data.aws_kms_key.rds", tfjsonpath.New(names.AttrARN)),
+					kmsKeyIDExpectNoChange.AddStateValue(resourceName, tfjsonpath.New("performance_insights_kms_key_id")),
+					statecheck.ExpectKnownValue(resourceName, tfjsonpath.New("performance_insights_retention_period"), knownvalue.Int64Exact(465)),
+				},
+			},
+		},
+	})
+}
+
 func TestAccRDSCluster_databaseInsightsMode_defaultKMSKey_Disable_PerformanceInsightsEnabled(t *testing.T) {
 	ctx := acctest.Context(t)
 	if testing.Short() {
@@ -7221,6 +7261,48 @@ data "aws_kms_key" "rds" {
 `, rName, tfrds.ClusterEngineMySQL, databaseInsightsMode, performanceInsightsEnabled, performanceInsightsRetentionPeriod))
 }
 
+func testAccClusterConfig_GlobalClusterIdentifier_databaseInsightsMode_defaultKMSKey(rName, databaseInsightsMode string, performanceInsightsEnabled bool, performanceInsightsRetentionPeriod string) string {
+	if databaseInsightsMode != "null" {
+		databaseInsightsMode = strconv.Quote(databaseInsightsMode)
+	}
+
+	return acctest.ConfigCompose(
+		testAccClusterConfig_clusterSubnetGroup(rName),
+		fmt.Sprintf(`
+resource "aws_rds_cluster" "test" {
+  cluster_identifier        = %[1]q
+  global_cluster_identifier = aws_rds_global_cluster.test.global_cluster_identifier
+
+  engine         = aws_rds_global_cluster.test.engine
+  engine_version = aws_rds_global_cluster.test.engine_version
+ 
+  master_username           = "tfacctest"
+  master_password           = "avoid-plaintext-passwords"
+  skip_final_snapshot       = true
+  apply_immediately         = true
+  db_subnet_group_name      = aws_db_subnet_group.test.name
+
+  database_insights_mode                = %[3]s
+  performance_insights_enabled          = %[4]t
+  performance_insights_retention_period = %[5]s
+}
+
+data "aws_rds_engine_version" "test" {
+  engine = "aurora-postgresql"
+}
+
+resource "aws_rds_global_cluster" "test" {
+  global_cluster_identifier = %[1]q
+  engine                    = data.aws_rds_engine_version.test.engine
+  engine_version            = data.aws_rds_engine_version.test.version
+}
+
+data "aws_kms_key" "rds" {
+  key_id = "alias/aws/rds"
+}
+`, rName, tfrds.ClusterEngineMySQL, databaseInsightsMode, performanceInsightsEnabled, performanceInsightsRetentionPeriod))
+}
+
 func testAccClusterConfig_databaseInsightsMode_customKMSKey(rName, databaseInsightsMode string, performanceInsightsEnabled bool, performanceInsightsRetentionPeriod string) string {
 	if databaseInsightsMode != "null" {
 		databaseInsightsMode = strconv.Quote(databaseInsightsMode)