Support app service application logs blob storage

azurerm/helpers/azure/app_service.go

@@ -445,6 +445,57 @@ func SchemaAppServiceSiteConfig() *schema.Schema {
 	}
 }
 
+func SchemaAppServiceLogsConfig() *schema.Schema {
+	return &schema.Schema{
+		Type:     schema.TypeList,
+		Optional: true,
+		Computed: true,
+		MaxItems: 1,
+		Elem: &schema.Resource{
+			Schema: map[string]*schema.Schema{
+				"application_logs": {
+					Type:     schema.TypeList,
+					Optional: true,
+					MaxItems: 1,
+					Elem: &schema.Resource{
+						Schema: map[string]*schema.Schema{
+							"azure_blob_storage": {
+								Type:     schema.TypeList,
+								Optional: true,
+								MaxItems: 1,
+								Elem: &schema.Resource{
+									Schema: map[string]*schema.Schema{
+										"level": {
+											Type:     schema.TypeString,
+											Required: true,
+											ValidateFunc: validation.StringInSlice([]string{
+												string(web.Error),
+												string(web.Information),
+												string(web.Off),
+												string(web.Verbose),
+												string(web.Warning),
+											}, false),
+										},
+										"sas_url": {
+											Type:      schema.TypeString,
+											Required:  true,
+											Sensitive: true,
+										},
+										"retention_in_days": {
+											Type:     schema.TypeInt,
+											Required: true,
+										},
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+}
+
 func SchemaAppServiceDataSourceSiteConfig() *schema.Schema {
 	return &schema.Schema{
 		Type:     schema.TypeList,
@@ -1002,6 +1053,84 @@ func FlattenAppServiceAuthSettings(input *web.SiteAuthSettingsProperties) []inte
 	return append(results, result)
 }
 
+func FlattenAppServiceLogs(input *web.SiteLogsConfigProperties) []interface{} {
+	results := make([]interface{}, 0)
+	if input == nil {
+		return results
+	}
+
+	result := make(map[string]interface{})
+
+	if input.ApplicationLogs != nil {
+		appLogs := make([]interface{}, 0)
+
+		appLogsItem := make(map[string]interface{})
+
+		if blobStorageInput := input.ApplicationLogs.AzureBlobStorage; blobStorageInput != nil {
+			blobStorage := make([]interface{}, 0)
+
+			blobStorageItem := make(map[string]interface{})
+
+			blobStorageItem["level"] = string(blobStorageInput.Level)
+
+			if blobStorageInput.SasURL != nil {
+				blobStorageItem["sas_url"] = *blobStorageInput.SasURL
+			}
+
+			if blobStorageInput.RetentionInDays != nil {
+				blobStorageItem["retention_in_days"] = *blobStorageInput.RetentionInDays
+			}
+
+			blobStorage = append(blobStorage, blobStorageItem)
+
+			appLogsItem["azure_blob_storage"] = blobStorage
+		}
+
+		appLogs = append(appLogs, appLogsItem)
+
+		result["application_logs"] = appLogs
+	}
+
+	return append(results, result)
+}
+
+func ExpandAppServiceLogs(input interface{}) web.SiteLogsConfigProperties {
+	configs := input.([]interface{})
+	logs := web.SiteLogsConfigProperties{}
+
+	if len(configs) == 0 {
+		return logs
+	}
+
+	config := configs[0].(map[string]interface{})
+
+	if v, ok := config["application_logs"]; ok {
+		appLogsConfigs := v.([]interface{})
+
+		for _, config := range appLogsConfigs {
+			appLogsConfig := config.(map[string]interface{})
+
+			logs.ApplicationLogs = &web.ApplicationLogsConfig{}
+
+			if v, ok := appLogsConfig["azure_blob_storage"]; ok {
+				storageConfigs := v.([]interface{})
+
+				for _, config := range storageConfigs {
+					storageConfig := config.(map[string]interface{})
+
+					logs.ApplicationLogs.AzureBlobStorage = &web.AzureBlobStorageApplicationLogsConfig{
+						Level:           web.LogLevel(storageConfig["level"].(string)),
+						SasURL:          utils.String(storageConfig["sas_url"].(string)),
+						RetentionInDays: utils.Int32(int32(storageConfig["retention_in_days"].(int))),
+					}
+				}
+			}
+		}
+	}
+
+	return logs
+}
+
 func ExpandAppServiceSiteConfig(input interface{}) web.SiteConfig {
 	configs := input.([]interface{})
 	siteConfig := web.SiteConfig{}

azurerm/resource_arm_app_service.go

@@ -71,6 +71,8 @@ func resourceArmAppService() *schema.Resource {
 
 			"auth_settings": azure.SchemaAppServiceAuthSettings(),
 
+			"logs": azure.SchemaAppServiceLogsConfig(),
+
 			"client_affinity_enabled": {
 				Type:     schema.TypeBool,
 				Optional: true,
@@ -292,6 +294,16 @@ func resourceArmAppServiceCreate(d *schema.ResourceData, meta interface{}) error
 		return fmt.Errorf("Error updating auth settings for App Service %q (Resource Group %q): %+s", name, resGroup, err)
 	}
 
+	logsConfig := azure.ExpandAppServiceLogs(d.Get("logs"))
+
+	logs := web.SiteLogsConfig{
+		ID:                       read.ID,
+		SiteLogsConfigProperties: &logsConfig}
+
+	if _, err := client.UpdateDiagnosticLogsConfig(ctx, resGroup, name, logs); err != nil {
+		return fmt.Errorf("Error updating diagnostic logs config for App Service %q (Resource Group %q): %+s", name, resGroup, err)
+	}
+
 	return resourceArmAppServiceUpdate(d, meta)
 }
 
@@ -365,6 +377,19 @@ func resourceArmAppServiceUpdate(d *schema.ResourceData, meta interface{}) error
 		}
 	}
 
+	if d.HasChange("logs") {
+		logs := azure.ExpandAppServiceLogs(d.Get("logs"))
+		id := d.Id()
+		logsResource := web.SiteLogsConfig{
+			ID:                       &id,
+			SiteLogsConfigProperties: &logs,
+		}
+
+		if _, err := client.UpdateDiagnosticLogsConfig(ctx, resGroup, name, logsResource); err != nil {
+			return fmt.Errorf("Error updating Diagnostics Logs for App Service %q: %+v", name, err)
+		}
+	}
+
 	if d.HasChange("client_affinity_enabled") {
 
 		affinity := d.Get("client_affinity_enabled").(bool)
@@ -465,6 +490,11 @@ func resourceArmAppServiceRead(d *schema.ResourceData, meta interface{}) error {
 		return fmt.Errorf("Error retrieving the AuthSettings for App Service %q (Resource Group %q): %+v", name, resGroup, err)
 	}
 
+	logsResp, err := client.GetDiagnosticLogsConfiguration(ctx, resGroup, name)
+	if err != nil {
+		return fmt.Errorf("Error retrieving the DiagnosticsLogsConfiguration for App Service %q (Resource Group %q): %+v", name, resGroup, err)
+	}
+
 	appSettingsResp, err := client.ListApplicationSettings(ctx, resGroup, name)
 	if err != nil {
 		if utils.ResponseWasNotFound(appSettingsResp.Response) {
@@ -515,7 +545,13 @@ func resourceArmAppServiceRead(d *schema.ResourceData, meta interface{}) error {
 		d.Set("possible_outbound_ip_addresses", props.PossibleOutboundIPAddresses)
 	}
 
-	if err := d.Set("app_settings", flattenAppServiceAppSettings(appSettingsResp.Properties)); err != nil {
+	appSettings := flattenAppServiceAppSettings(appSettingsResp.Properties)
+
+	// remove DIAGNOSTICS* settings - Azure will sync these, so just maintain the logs block equivalents in the state
+	delete(appSettings, "DIAGNOSTICS_AZUREBLOBCONTAINERSASURL")
+	delete(appSettings, "DIAGNOSTICS_AZUREBLOBRETENTIONINDAYS")
+
+	if err := d.Set("app_settings", appSettings); err != nil {
 		return err
 	}
 
@@ -533,6 +569,11 @@ func resourceArmAppServiceRead(d *schema.ResourceData, meta interface{}) error {
 		return fmt.Errorf("Error setting `auth_settings`: %s", err)
 	}
 
+	logs := azure.FlattenAppServiceLogs(logsResp.SiteLogsConfigProperties)
+	if err := d.Set("logs", logs); err != nil {
+		return fmt.Errorf("Error setting `logs`: %s", err)
+	}
+
 	scm := flattenAppServiceSourceControl(scmResp.SiteSourceControlProperties)
 	if err := d.Set("source_control", scm); err != nil {
 		return err

azurerm/resource_arm_app_service_test.go

@@ -780,6 +780,34 @@ func TestAccAzureRMAppService_localMySql(t *testing.T) {
 	})
 }
 
+func TestAccAzureRMAppService_applicationBlobStorageLogs(t *testing.T) {
+	resourceName := "azurerm_app_service.test"
+	ri := tf.AccRandTimeInt()
+	config := testAccAzureRMAppService_applicationBlobStorageLogs(ri, testLocation())
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testCheckAzureRMAppServiceDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: config,
+				Check: resource.ComposeTestCheckFunc(
+					testCheckAzureRMAppServiceExists(resourceName),
+					resource.TestCheckResourceAttr(resourceName, "logs.0.application_logs.0.azure_blob_storage.0.level", "Information"),
+					resource.TestCheckResourceAttr(resourceName, "logs.0.application_logs.0.azure_blob_storage.0.sas_url", "http://x.com/"),
+					resource.TestCheckResourceAttr(resourceName, "logs.0.application_logs.0.azure_blob_storage.0.retention_in_days", "3"),
+				),
+			},
+			{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}
+
 func TestAccAzureRMAppService_managedPipelineMode(t *testing.T) {
 	resourceName := "azurerm_app_service.test"
 	ri := tf.AccRandTimeInt()
@@ -2605,6 +2633,43 @@ resource "azurerm_app_service" "test" {
 `, rInt, location, rInt, rInt)
 }
 
+func testAccAzureRMAppService_applicationBlobStorageLogs(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" "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.test.id}"
+
+  logs {
+    application_logs {
+      azure_blob_storage {
+        level             = "Information"
+        sas_url           = "http://x.com/"
+        retention_in_days = 3
+      }
+    }
+  }
+}
+`, rInt, location, rInt, rInt)
+}
+
 func testAccAzureRMAppService_managedPipelineMode(rInt int, location string) string {
 	return fmt.Sprintf(`
 resource "azurerm_resource_group" "test" {

website/docs/r/app_service.html.markdown

@@ -81,6 +81,8 @@ The following arguments are supported:
 
 * `https_only` - (Optional) Can the App Service only be accessed via HTTPS? Defaults to `false`.
 
+* `logs` - (Optional) A `logs` block as defined below.
+
 * `site_config` - (Optional) A `site_config` block as defined below.
 
 * `tags` - (Optional) A mapping of tags to assign to the resource.
@@ -107,6 +109,28 @@ A `identity` block supports the following:
 
 ---
 
+A `logs` block supports the following:
+
+* `application_logs` - (Optional) An `application_logs` block as defined below.
+
+---
+
+An `application_logs` block supports the following:
+
+* `azure_blob_storage` - (Optional) An `azure_blob_storage` block as defined below.
+
+---
+
+An `azure_blob_storage` block supports the following:
+
+* `level` - (Required) The level at which to log. Possible values include `Error`, `Warning`, `Information`, `Verbose` and `Off`.
+
+* `sas_url` - (Required) The URL to the storage container, with a Service SAS token appended. **NOTE:** there is currently no means of generating Service SAS tokens with the `azurerm` provider.
+
+* `retention_in_days` - (Required) The number of days to retain logs for.
+
+---
+
 A `site_config` block supports the following:
 
 * `always_on` - (Optional) Should the app be loaded at all times? Defaults to `false`.