azurerm_function_app_slot.site_config - support for `auto_swap_slot…

…_name` (#7859)

Add auto_swap_slot_name to the azurerm_function_app_slot resource's site_config. This attribute enables auto-swapping to another slot (e.g. the production slot) during deployment.

Fix typo in azurerm_app_service_slot.site_config.auto_swap_slot_name documentation.

Add missing required azurerm_function_app_slot.function_app_name parameter to documentation.

azurerm/internal/services/web/resource_arm_function_app_slot.go

@@ -270,6 +270,10 @@ func resourceArmFunctionAppSlot() *schema.Resource {
 							ValidateFunc: validation.IntBetween(0, 10),
 						},
 						"cors": azure.SchemaWebCorsSettings(),
+						"auto_swap_slot_name": {
+							Type:     schema.TypeString,
+							Optional: true,
+						},
 					},
 				},
 			},
@@ -832,6 +836,10 @@ func expandFunctionAppSlotSiteConfig(d *schema.ResourceData) (web.SiteConfig, er
 		siteConfig.PreWarmedInstanceCount = utils.Int32(int32(v.(int)))
 	}
 
+	if v, ok := config["auto_swap_slot_name"]; ok {
+		siteConfig.AutoSwapSlotName = utils.String(v.(string))
+	}
+
 	return siteConfig, nil
 }
 
@@ -875,6 +883,10 @@ func flattenFunctionAppSlotSiteConfig(input *web.SiteConfig) []interface{} {
 
 	result["cors"] = azure.FlattenWebCorsSettings(input.Cors)
 
+	if input.AutoSwapSlotName != nil {
+		result["auto_swap_slot_name"] = *input.AutoSwapSlotName
+	}
+
 	results = append(results, result)
 	return results
 }

azurerm/internal/services/web/tests/resource_arm_function_app_slot_test.go

@@ -212,6 +212,27 @@ func TestAccAzureRMFunctionAppSlot_corsSettings(t *testing.T) {
 		},
 	})
 }
+
+func TestAccAzureRMFunctionAppSlot_autoSwap(t *testing.T) {
+	data := acceptance.BuildTestData(t, "azurerm_function_app_slot", "test")
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { acceptance.PreCheck(t) },
+		Providers:    acceptance.SupportedProviders,
+		CheckDestroy: testCheckAzureRMFunctionAppSlotDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAzureRMFunctionAppSlot_autoSwap(data),
+				Check: resource.ComposeTestCheckFunc(
+					testCheckAzureRMFunctionAppSlotExists(data.ResourceName),
+					resource.TestCheckResourceAttr(data.ResourceName, "site_config.0.auto_swap_slot_name", "production"),
+				),
+			},
+			data.ImportStep(),
+		},
+	})
+}
+
 func TestAccAzureRMFunctionAppSlot_authSettings(t *testing.T) {
 	data := acceptance.BuildTestData(t, "azurerm_function_app_slot", "test")
 
@@ -1172,6 +1193,61 @@ resource "azurerm_function_app_slot" "test" {
 `, data.RandomInteger, data.Locations.Primary, data.RandomInteger, data.RandomString, data.RandomInteger, data.RandomInteger)
 }
 
+func testAccAzureRMFunctionAppSlot_autoSwap(data acceptance.TestData) string {
+	return fmt.Sprintf(`
+provider "azurerm" {
+  features {}
+}
+
+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_storage_account" "test" {
+  name                     = "acctestsa%s"
+  resource_group_name      = azurerm_resource_group.test.name
+  location                 = azurerm_resource_group.test.location
+  account_tier             = "Standard"
+  account_replication_type = "LRS"
+}
+
+resource "azurerm_function_app" "test" {
+  name                       = "acctestFA-%d"
+  location                   = azurerm_resource_group.test.location
+  resource_group_name        = azurerm_resource_group.test.name
+  app_service_plan_id        = azurerm_app_service_plan.test.id
+  storage_account_name       = azurerm_storage_account.test.name
+  storage_account_access_key = azurerm_storage_account.test.primary_access_key
+}
+
+resource "azurerm_function_app_slot" "test" {
+  name                       = "acctestFASlot-%d"
+  location                   = azurerm_resource_group.test.location
+  resource_group_name        = azurerm_resource_group.test.name
+  app_service_plan_id        = azurerm_app_service_plan.test.id
+  function_app_name          = azurerm_function_app.test.name
+  storage_account_name       = azurerm_storage_account.test.name
+  storage_account_access_key = azurerm_storage_account.test.primary_access_key
+
+  site_config {
+    auto_swap_slot_name = "production"
+  }
+}
+`, data.RandomInteger, data.Locations.Primary, data.RandomInteger, data.RandomString, data.RandomInteger, data.RandomInteger)
+}
+
 func testAccAzureRMFunctionAppSlot_authSettings(data acceptance.TestData, tenantID string) string {
 	return fmt.Sprintf(`
 provider "azurerm" {

website/docs/r/app_service_slot.html.markdown

@@ -232,7 +232,7 @@ The following arguments are supported:
 
 * `websockets_enabled` - (Optional) Should WebSockets be enabled?
 
-* `auto_swap_slot_name` - (Optional) The name of the swap to automatically swap to during deployment
+* `auto_swap_slot_name` - (Optional) The name of the slot to automatically swap to during deployment
 
 ---
 

website/docs/r/function_app_slot.html.markdown

@@ -70,6 +70,8 @@ The following arguments are supported:
 
 * `app_service_plan_id` - (Required) The ID of the App Service Plan within which to create this Function App Slot.
 
+* `function_app_name` - (Required) The name of the Function App within which to create the Function App Slot. Changing this forces a new resource to be created.
+
 * `storage_account_name` - (Required) The backend storage account name which will be used by the Function App (such as the dashboard, logs).
 
 * `storage_account_access_key` - (Required) The access key which will be used to access the backend storage account for the Function App.
@@ -140,6 +142,8 @@ The following arguments are supported:
 
 * `ip_restriction` - (Optional) A [List of objects](/docs/configuration/attr-as-blocks.html) representing ip restrictions as defined below.
 
+* `auto_swap_slot_name` - (Optional) The name of the slot to automatically swap to during deployment
+
 ---
 
 A `cors` block supports the following: