aws_apprunner_service observability_configuration_arn optional

.changelog/28620.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_apprunner_service: `observability_configuration_arn` is optional
+```

internal/service/apprunner/service.go

@@ -205,7 +205,7 @@ func ResourceService() *schema.Resource {
 					Schema: map[string]*schema.Schema{
 						"observability_configuration_arn": {
 							Type:         schema.TypeString,
-							Required:     true,
+							Optional:     true,
 							ValidateFunc: verify.ValidARN,
 						},
 						"observability_enabled": {
@@ -790,7 +790,7 @@ func expandServiceObservabilityConfiguration(l []interface{}) *apprunner.Service
 
 	result := &apprunner.ServiceObservabilityConfiguration{}
 
-	if v, ok := tfMap["observability_configuration_arn"].(string); ok {
+	if v, ok := tfMap["observability_configuration_arn"].(string); ok && len(v) > 0 {
 		result.ObservabilityConfigurationArn = aws.String(v)
 	}
 

internal/service/apprunner/service_test.go

@@ -311,6 +311,7 @@ func TestAccAppRunnerService_ImageRepository_networkConfiguration(t *testing.T)
 
 func TestAccAppRunnerService_ImageRepository_observabilityConfiguration(t *testing.T) {
 	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
+	rName2 := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
 	resourceName := "aws_apprunner_service.test"
 	observabilityConfigurationResourceName := "aws_apprunner_observability_configuration.test"
 
@@ -334,6 +335,14 @@ func TestAccAppRunnerService_ImageRepository_observabilityConfiguration(t *testi
 				ImportState:       true,
 				ImportStateVerify: true,
 			},
+			{
+				Config: testAccServiceConfig_ImageRepository_observabilityConfiguration_disabled(rName2),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckServiceExists(resourceName),
+					resource.TestCheckResourceAttr(resourceName, "observability_configuration.#", "1"),
+					resource.TestCheckResourceAttr(resourceName, "observability_configuration.0.observability_enabled", "false"),
+				),
+			},
 		},
 	})
 }
@@ -736,6 +745,34 @@ resource "aws_apprunner_observability_configuration" "test" {
 `, rName)
 }
 
+func testAccServiceConfig_ImageRepository_observabilityConfiguration_disabled(rName string) string {
+	return fmt.Sprintf(`
+resource "aws_apprunner_service" "test" {
+  service_name = %[1]q
+
+  health_check_configuration {
+    healthy_threshold = 2
+    timeout           = 5
+  }
+
+  observability_configuration {
+    observability_enabled = false
+  }
+
+  source_configuration {
+    auto_deployments_enabled = false
+    image_repository {
+      image_configuration {
+        port = "80"
+      }
+      image_identifier      = "public.ecr.aws/nginx/nginx:latest"
+      image_repository_type = "ECR_PUBLIC"
+    }
+  }
+}
+`, rName)
+}
+
 func testAccIAMRole(rName string) string {
 	return fmt.Sprintf(`
 data "aws_partition" "current" {}

website/docs/r/apprunner_service.html.markdown

@@ -198,8 +198,8 @@ The `egress_configuration` block supports the following argument:
 
 The `observability_configuration` block supports the following arguments:
 
-* `observability_configuration_arn` - (Required) ARN of the observability configuration that is associated with the service.
 * `observability_enabled` - (Required) When `true`, an observability configuration resource is associated with the service.
+* `observability_configuration_arn` - (Optional) ARN of the observability configuration that is associated with the service. Specified only when `observability_enabled` is `true`.
 
 ### Code Repository