↩️ 👉 🔗 🔢 🚫 ✔️ 🙆 ↔ 📄 ⚫️, 👥 💪 ⚙️ `Depends` ⏮️ `oauth2_scheme`, 👥 🚫 ✔️ ⚙️ `Security` 🕐❔ 👥 🚫 💪 ✔ 💂‍♂ ↔.

👥 📣 🎁 🔢 🆎 `SecurityScopes`, 🗄 ⚪️➡️ `fastapi.security`.

👉 `SecurityScopes` 🎓 🎏 `Request` (`Request` ⚙️ 🤚 📨 🎚 🔗).

```Python hl_lines="8  105"
{!../../docs_src/security/tutorial005.py!}
```

## ⚙️ `scopes`

🔢 `security_scopes` 🔜 🆎 `SecurityScopes`.

#### Định nghĩa moojt *decorator cho đường dẫn toán tử*

```Python hl_lines="6"
{!../../docs_src/first_steps/tutorial001.py!}
```

`@app.get("/")` nói **FastAPI** rằng hàm bên dưới có trách nhiệm xử lí request tới:

* đường dẫn `/`
* sử dụng một <abbr title="an HTTP GET method">toán tử<code>get</code></abbr>

/// info | Thông tin về "`@decorator`"

Cú pháp `@something` trong Python được gọi là một "decorator".

                              type: string
                            http2Error:
                              type: string
                            httpStatus:
                              description: HTTP status code to use to abort the Http
                                request.
                              format: int32

  // DefaultRequest is the default resource requirement request value by resource name if resource request is omitted.
  // +optional
  map<string, k8s.io.apimachinery.pkg.api.resource.Quantity> defaultRequest = 5;

### Feature

### Small Errors Automatically Handled

When building web APIs with FastAPI, if there's an error in our code, FastAPI will normally contain it to the single request that triggered the error. 🛡

The client will get a **500 Internal Server Error** for that request, but the application will continue working for the next requests instead of just crashing completely.

### Bigger Errors - Crashes

    public static final String ERRORS_APP_DB_ALREADY_EXISTS = "{errors.app.db.already.exists}";

    /** The key of the message: Your request might have been processed before this request. Please check and retry it. */
    public static final String ERRORS_APP_DOUBLE_SUBMIT_REQUEST = "{errors.app.double.submit.request}";

    /** The key of the message: Username or Password is not correct. */

* **Type checks**.

...en **FastAPI** gebruikt dezelfde declaraties om:

* **Vereisten te definïeren **: van request pad parameters, query parameters, headers, bodies, dependencies, enz.
* **Data te converteren**: van de request naar het vereiste type.
* **Data te valideren**: afkomstig van elke request:
    * **Automatische foutmeldingen** te genereren die naar de client worden geretourneerd wanneer de data ongeldig is.

func isVeeamSOSAPIObject(object string) bool {
	switch object {
	case systemXMLObject, capacityXMLObject:
		return true
	default:
		return false
	}
}

// isVeeamClient - returns true if the request is from Veeam client.
func isVeeamClient(ctx context.Context) bool {
	ri := logger.GetReqInfo(ctx)
	return ri != nil && strings.Contains(ri.UserAgent, veeamAgentSubstr)
}

Es ist so konzipiert, dass es über Funktionen verfügt, welche zwei Parameter empfangen, einen „Request“ und eine „Response“. Dann „lesen“ Sie Teile des Requests und „schreiben“ Teile der Response. Aufgrund dieses Designs ist es nicht möglich, Request-Parameter und -Bodys mit Standard-Python-Typhinweisen als Funktionsparameter zu deklarieren.