No nosso exemplo de código acima, nós não usamos ele diretamente, mas nós passamos para o FastAPI para ele usá-lo.

O parâmetro `lifespan` da aplicação `FastAPI` usa um **Gerenciador de Contexto Assíncrono**, então nós podemos passar nosso novo gerenciador de contexto assíncrono do `lifespan` para ele.

```Python hl_lines="22"

mi: te reo Māori
mk: македонски јазик
ml: മലയാളം
mn: Монгол хэл
mr: मराठी
ms: Bahasa Malaysia
mt: Malti
my: ဗမာစာ
na: Ekakairũ Naoero
nb: Norsk bokmål
nd: isiNdebele
ne: नेपाली
ng: Owambo
nl: Nederlands
nn: Norsk nynorsk
'no': Norsk
nr: isiNdebele
nv: Diné bizaad
ny: chiCheŵa
oc: occitan
oj: ᐊᓂᔑᓈᐯᒧᐎᓐ
om: Afaan Oromoo
or: ଓଡ଼ିଆ
os: ирон æвзаг
pa: ਪੰਜਾਬੀ
pi: पाऴि

# Middleware Avançado

No tutorial principal você leu como adicionar [Middleware Personalizado](../tutorial/middleware.md){.internal-link target=_blank} à sua aplicação.

E então você também leu como lidar com [CORS com o `CORSMiddleware`](../tutorial/cors.md){.internal-link target=_blank}.

Nesta seção, veremos como usar outros middlewares.

## Adicionando middlewares ASGI

///

/// توجه | "جزئیات فنی"

شما همچنین می‌توانید از `from starlette.requests import Request` استفاده کنید.

Im Haupttutorial haben Sie gelesen, wie Sie Ihrer Anwendung [benutzerdefinierte Middleware](../tutorial/middleware.md){.internal-link target=_blank} hinzufügen können.

Und dann auch, wie man [CORS mittels der `CORSMiddleware`](../tutorial/cors.md){.internal-link target=_blank} handhabt.

In diesem Abschnitt werden wir sehen, wie man andere Middlewares verwendet.

## ASGI-Middleware hinzufügen

			Queries("cors", "")
		// PutBucketCors - this is a dummy call.
		router.Methods(http.MethodPut).
			HandlerFunc(s3APIMiddleware(api.PutBucketCorsHandler)).
			Queries("cors", "")
		// DeleteBucketCors - this is a dummy call.
		router.Methods(http.MethodDelete).
			HandlerFunc(s3APIMiddleware(api.DeleteBucketCorsHandler)).
			Queries("cors", "")
		// GetBucketWebsiteHandler - this is a dummy call.

func (api objectAPIHandlers) DeleteBucketWebsiteHandler(w http.ResponseWriter, r *http.Request) {
	writeSuccessResponseHeadersOnly(w)
}

// GetBucketCorsHandler - GET bucket cors, a dummy api
func (api objectAPIHandlers) GetBucketCorsHandler(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "GetBucketCors")

	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))

En fait, ces blocs de code ne sont pas écrits à l'intérieur du Markdown, ce sont des fichiers Python dans le répertoire `./docs_src/`.

Et ces fichiers Python sont inclus/injectés dans la documentation lors de la génération du site.

### Documentation pour les tests

La plupart des tests sont en fait effectués par rapport aux exemples de fichiers sources dans la documentation.

Cela permet de s'assurer que :

# 高级中间件

用户指南介绍了如何为应用添加[自定义中间件](../tutorial/middleware.md){.internal-link target=_blank} 。

以及如何[使用 `CORSMiddleware` 处理 CORS](../tutorial/cors.md){.internal-link target=_blank}。

本章学习如何使用其它中间件。

## 添加 ASGI 中间件

因为 **FastAPI** 基于 Starlette，且执行 <abbr title="Asynchronous Server Gateway Interface，异步服务器网关界面">ASGI</abbr> 规范，所以可以使用任意 ASGI 中间件。

中间件不必是专为 FastAPI 或 Starlette 定制的，只要遵循 ASGI 规范即可。

总之，ASGI 中间件是类，并把 ASGI 应用作为第一个参数。

- BucketACL (Use [bucket policies](https://min.io/docs/minio/linux/administration/identity-access-management/policy-based-access-control.html) instead)
- BucketCORS (CORS enabled by default on all buckets for all HTTP verbs, you can optionally restrict the CORS domains)
- BucketWebsite (Use [`caddy`](https://github.com/caddyserver/caddy) or [`nginx`](https://www.nginx.com/resources/wiki/))