* Это будет сделано отправкой POST-запроса (из *вашего API*) в *внешний API*, предоставленный этим внешним разработчиком (это и есть «callback»).

## Обычное приложение **FastAPI** { #the-normal-fastapi-app }

Сначала посмотрим, как будет выглядеть обычное приложение API до добавления обратного вызова.

Por exemplo, dentro de uma função de *operação de rota* `assíncrona`, você pode obter o conteúdo com:

```Python
contents = await myfile.read()
```

Se você estiver dentro de uma função de *operação de rota* normal `def`, você pode acessar o `UploadFile.file` diretamente, por exemplo:

```Python
contents = myfile.file.read()
```

/// note | Detalhes Técnicos do `async`

    }

    /**
     * This is super-hacky: this report is instantiated via {@code newInstance()}, within a different
     * classloader by {@link JApiCmpWorkerAction}, so there is no way to use a
     * normal property on the renderer instance and just set the location of the API file in it.
     *
     * Instead, we'll encode the path to the file in the description data field, as a link.  This is

### Simple requests { #simple-requests }

Any request with an `Origin` header. In this case the middleware will pass the request through as normal, but will include appropriate CORS headers on the response.

## More info { #more-info }

    static {
        // Initialize long key with predictable data
        Arrays.fill(LONG_TEST_KEY, (byte) 0xAB);
    }

    @Test
    void testConstructorWithNormalKey() {
        // Test constructor with a normal length key
        HMACT64 hmac = new HMACT64(TEST_KEY);
        assertNotNull(hmac);
    }

    @Test
    void testConstructorWithLongKey() {
        // Test constructor with a key longer than BLOCK_LENGTH (64 bytes)

### Requests simples { #simple-requests }

Cualquier request con un header `Origin`. En este caso, el middleware pasará el request a través de lo normal, pero incluirá los headers CORS adecuados en el response.

## Más info { #more-info }

You can define event handlers (functions) that need to be executed before the application starts up, or when the application is shutting down.

These functions can be declared with `async def` or normal `def`.

### `startup` event { #startup-event }

To add a function that should be run before the application starts, declare it with the event `"startup"`:

{* ../../docs_src/events/tutorial001_py39.py hl[8] *}

Você pode definir manipuladores de eventos (funções) que precisam ser executados antes de a aplicação iniciar ou quando a aplicação estiver encerrando.

Essas funções podem ser declaradas com `async def` ou `def` normal.

### Evento `startup` { #startup-event }

Para adicionar uma função que deve rodar antes de a aplicação iniciar, declare-a com o evento `"startup"`:

{* ../../docs_src/events/tutorial001_py39.py hl[8] *}

// Tests extracting bucket and objectname from various types of paths.
func TestPath2BucketObjectName(t *testing.T) {
	testCases := []struct {
		path           string
		bucket, object string
	}{
		// Test case 1 normal case.
		{
			path:   "/bucket/object",
			bucket: "bucket",
			object: "object",
		},
		// Test case 2 where url only has separator.
		{
			path:   SlashSeparator,
			bucket: "",
			object: "",

    /** Archive attribute */
    int ATTR_ARCHIVE = 0x20;

    // extended file attribute encoding(others same as above)
    /** Compressed file attribute */
    int ATTR_COMPRESSED = 0x800;
    /** Normal file attribute */
    int ATTR_NORMAL = 0x080;
    /** Temporary file attribute */
    int ATTR_TEMPORARY = 0x100;

    // access mask encoding
    /** File read data access right */