r/app_service: support for migrating between App Service Plans

azurerm/resource_arm_app_service.go

@@ -65,7 +65,6 @@ func resourceArmAppService() *schema.Resource {
 			"app_service_plan_id": {
 				Type:     schema.TypeString,
 				Required: true,
-				ForceNew: true,
 			},
 
 			"site_config": azure.SchemaAppServiceSiteConfig(),

azurerm/resource_arm_app_service_test.go

@@ -108,6 +108,32 @@ func TestAccAzureRMAppService_requiresImport(t *testing.T) {
 	})
 }
 
+func TestAccAzureRMAppService_movingAppService(t *testing.T) {
+	resourceName := "azurerm_app_service.test"
+	ri := tf.AccRandTimeInt()
+	location := testLocation()
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testCheckAzureRMAppServiceDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAzureRMAppService_basic(ri, location),
+				Check: resource.ComposeTestCheckFunc(
+					testCheckAzureRMAppServiceExists(resourceName),
+				),
+			},
+			{
+				Config: testAccAzureRMAppService_moved(ri, location),
+				Check: resource.ComposeTestCheckFunc(
+					testCheckAzureRMAppServiceExists(resourceName),
+				),
+			},
+		},
+	})
+}
+
 func TestAccAzureRMAppService_freeTier(t *testing.T) {
 	resourceName := "azurerm_app_service.test"
 	ri := tf.AccRandTimeInt()
@@ -1310,6 +1336,44 @@ resource "azurerm_app_service" "test" {
 `, rInt, location, rInt, rInt)
 }
 
+func testAccAzureRMAppService_moved(rInt int, location string) string {
+	return fmt.Sprintf(`
+resource "azurerm_resource_group" "test" {
+  name     = "acctestRG-%d"
+  location = "%s"
+}
+
+resource "azurerm_app_service_plan" "test" {
+  name                = "acctestASP-%d"
+  location            = "${azurerm_resource_group.test.location}"
+  resource_group_name = "${azurerm_resource_group.test.name}"
+
+  sku {
+    tier = "Standard"
+    size = "S1"
+  }
+}
+
+resource "azurerm_app_service_plan" "other" {
+  name                = "acctestASP2-%d"
+  location            = "${azurerm_resource_group.test.location}"
+  resource_group_name = "${azurerm_resource_group.test.name}"
+
+  sku {
+    tier = "Standard"
+    size = "S1"
+  }
+}
+
+resource "azurerm_app_service" "test" {
+  name                = "acctestAS-%d"
+  location            = "${azurerm_resource_group.test.location}"
+  resource_group_name = "${azurerm_resource_group.test.name}"
+  app_service_plan_id = "${azurerm_app_service_plan.other.id}"
+}
+`, rInt, location, rInt, rInt, rInt)
+}
+
 func testAccAzureRMAppService_sharedTier(rInt int, location string) string {
 	return fmt.Sprintf(`
 resource "azurerm_resource_group" "test" {

website/docs/r/app_service.html.markdown

@@ -67,7 +67,7 @@ The following arguments are supported:
 
 * `location` - (Required) Specifies the supported Azure location where the resource exists. Changing this forces a new resource to be created.
 
-* `app_service_plan_id` - (Required) The ID of the App Service Plan within which to create this App Service. Changing this forces a new resource to be created.
+* `app_service_plan_id` - (Required) The ID of the App Service Plan within which to create this App Service.
 
 * `app_settings` - (Optional) A key-value pair of App Settings.