add

azurerm/internal/services/web/resource_arm_function_app_slot.go

@@ -264,6 +264,11 @@ func resourceArmFunctionAppSlot() *schema.Resource {
 								string(web.FtpsOnly),
 							}, false),
 						},
+						"pre_warmed_instance_count": {
+							Type:         schema.TypeInt,
+							Optional:     true,
+							ValidateFunc: validation.IntBetween(0, 10),
+						},
 						"cors": azure.SchemaWebCorsSettings(),
 					},
 				},
@@ -823,6 +828,10 @@ func expandFunctionAppSlotSiteConfig(d *schema.ResourceData) (web.SiteConfig, er
 		siteConfig.FtpsState = web.FtpsState(v.(string))
 	}
 
+	if v, ok := config["pre_warmed_instance_count"]; ok {
+		siteConfig.PreWarmedInstanceCount = utils.Int32(int32(v.(int)))
+	}
+
 	return siteConfig, nil
 }
 
@@ -855,6 +864,10 @@ func flattenFunctionAppSlotSiteConfig(input *web.SiteConfig) []interface{} {
 		result["http2_enabled"] = *input.HTTP20Enabled
 	}
 
+	if input.PreWarmedInstanceCount != nil {
+		result["pre_warmed_instance_count"] = *input.PreWarmedInstanceCount
+	}
+
 	result["ip_restriction"] = flattenFunctionAppSlotIPRestriction(input.IPSecurityRestrictions)
 
 	result["min_tls_version"] = string(input.MinTLSVersion)

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

@@ -10,7 +10,6 @@ import (
 	"github.com/terraform-providers/terraform-provider-azurerm/azurerm/helpers/validate"
 	"github.com/terraform-providers/terraform-provider-azurerm/azurerm/internal/acceptance"
 	"github.com/terraform-providers/terraform-provider-azurerm/azurerm/internal/clients"
-	"github.com/terraform-providers/terraform-provider-azurerm/azurerm/internal/features"
 	"github.com/terraform-providers/terraform-provider-azurerm/azurerm/utils"
 )
 
@@ -33,11 +32,6 @@ func TestAccAzureRMFunctionAppSlot_basic(t *testing.T) {
 }
 
 func TestAccAzureRMFunctionAppSlot_requiresImport(t *testing.T) {
-	if !features.ShouldResourcesBeImported() {
-		t.Skip("Skipping since resources aren't required to be imported")
-		return
-	}
-
 	data := acceptance.BuildTestData(t, "azurerm_function_app_slot", "test")
 
 	resource.ParallelTest(t, resource.TestCase{
@@ -685,6 +679,26 @@ func testCheckAzureRMFunctionAppSlotExists(slot string) resource.TestCheckFunc {
 	}
 }
 
+func TestAccAzureRMFunctionAppSlot_preWarmedInstanceCount(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: testCheckAzureRMFunctionAppDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAzureRMFunctionAppSlot_preWarmedInstanceCount(data),
+				Check: resource.ComposeTestCheckFunc(
+					testCheckAzureRMFunctionAppSlotExists(data.ResourceName),
+					resource.TestCheckResourceAttr(data.ResourceName, "site_config.0.pre_warmed_instance_count", "1"),
+				),
+			},
+			data.ImportStep(),
+		},
+	})
+}
+
 func testAccAzureRMFunctionAppSlot_basic(data acceptance.TestData) string {
 	return fmt.Sprintf(`
 provider "azurerm" {
@@ -747,8 +761,8 @@ resource "azurerm_function_app_slot" "import" {
   resource_group_name        = azurerm_function_app_slot.test.resource_group_name
   app_service_plan_id        = azurerm_function_app_slot.test.app_service_plan_id
   function_app_name          = azurerm_function_app_slot.test.function_app_name
-  storage_account_name       = azurerm_function_app_slot.test.name
-  storage_account_access_key = azurerm_function_app_slot.test.primary_access_key
+  storage_account_name       = azurerm_function_app_slot.test.storage_account_name
+  storage_account_access_key = azurerm_function_app_slot.test.storage_account_access_key
 }
 `, template)
 }
@@ -2035,3 +2049,57 @@ resource "azurerm_function_app_slot" "test" {
 }
 `, data.RandomInteger, data.Locations.Primary, data.RandomInteger, data.RandomString, data.RandomInteger, data.RandomInteger, tlsVersion)
 }
+
+func testAccAzureRMFunctionAppSlot_preWarmedInstanceCount(data acceptance.TestData) string {
+	return fmt.Sprintf(`
+provider "azurerm" {
+  features {}
+}
+
+resource "azurerm_resource_group" "test" {
+  name     = "acctestRG-%d"
+  location = "%s"
+}
+
+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_app_service_plan" "test" {
+  name                = "acctestASP-%d"
+  resource_group_name = azurerm_resource_group.test.name
+  location            = azurerm_resource_group.test.location
+  kind                = "elastic"
+  sku {
+    tier = "ElasticPremium"
+    size = "EP1"
+  }
+}
+
+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_connection_string = azurerm_storage_account.test.primary_connection_string
+}
+
+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 {
+    min_tls_version = "%s"
+  }
+}
+`, data.RandomInteger, data.Locations.Primary, data.RandomString, data.RandomInteger, data.RandomInteger, data.RandomInteger, data.RandomString)
+}

website/docs/r/function_app_slot.html.markdown

@@ -130,6 +130,8 @@ The following arguments are supported:
 
 * `ftps_state` - (Optional) State of FTP / FTPS service for this function app. Possible values include: `AllAllowed`, `FtpsOnly` and `Disabled`.
 
+* `pre_warmed_instance_count` - (Optional) The number of pre-warmed instances for this function app. Only affects apps on the Premium plan.
+
 * `cors` - (Optional) A `cors` block as defined below.
 
 * `ip_restriction` - (Optional) A [List of objects](/docs/configuration/attr-as-blocks.html) representing ip restrictions as defined below.