/**
     * Creates a new Maven-like repository system session by initializing the session with values typical for
     * Maven-based resolution. In more detail, this method configures settings relevant for the processing of dependency
     * graphs, most other settings remain at their generic default value. Use the various setters to further configure

先建立一個 Pydantic 的使用者模型。

就像用 Pydantic 宣告請求體一樣，我們也可以在其他地方使用它：

{* ../../docs_src/security/tutorial002_an_py310.py hl[5,12:6] *}

## 建立 `get_current_user` 依賴 { #create-a-get-current-user-dependency }

讓我們建立一個依賴 `get_current_user`。

記得依賴可以有子依賴嗎？

`get_current_user` 會依賴我們先前建立的相同 `oauth2_scheme`。

如同先前在*路徑操作*中直接做的一樣，新的依賴 `get_current_user` 會從子依賴 `oauth2_scheme` 接收一個作為 `str` 的 `token`：

{* ../../docs_src/background_tasks/tutorial001_py310.py hl[14] *}

`.add_task()` 的引數包括：

* 要在背景執行的任務函式（`write_notification`）。
* 依序傳給任務函式的位置引數（`email`）。
* 要傳給任務函式的關鍵字引數（`message="some notification"`）。

## 相依性注入 { #dependency-injection }

在相依性注入系統中也可使用 `BackgroundTasks`。你可以在多個層級宣告 `BackgroundTasks` 型別的參數：路徑操作函式、相依項（dependable）、次級相依項等。

**FastAPI** 會在各種情況下正確處理並重用同一個物件，將所有背景任務合併，並在之後於背景執行：

Burada şunları ayarlayabilirsiniz:

* path'te kullanılan "Item ID".
* query parametresi olarak kullanılan "Token".

/// tip

query'deki `token` değerinin bir dependency tarafından ele alınacağına dikkat edin.

///

Bununla WebSocket'e bağlanabilir, ardından mesaj gönderip alabilirsiniz:

<img src="/img/tutorial/websockets/image05.png">

	"reflect"
	"runtime"
	"testing"
	"time"

	"github.com/minio/minio/internal/grid"
	xnet "github.com/minio/pkg/v3/net"
)

// Storage REST server, storageRESTReceiver and StorageRESTClient are
// inter-dependent, below test functions are sufficient to test all of them.
func testStorageAPIDiskInfo(t *testing.T, storage StorageAPI) {
	testCases := []struct {
		expectErr bool
	}{
		{true},
	}

	type Dependency struct {
		*gorm.Statement
		Depends []*schema.Schema
	}

	var (
		modelNames, orderedModelNames []string
		orderedModelNamesMap          = map[string]bool{}
		parsedSchemas                 = map[*schema.Schema]bool{}
		valuesMap                     = map[string]Dependency{}
		insertIntoOrderedList         func(name string)

There you can set:

* The "Item ID", used in the path.
* The "Token" used as a query parameter.

/// tip

Notice that the query `token` will be handled by a dependency.

///

With that you can connect the WebSocket and then send and receive messages:

<img src="/img/tutorial/websockets/image05.png">

* Quaisquer argumentos nomeados que devem ser passados para a função de tarefa (`message="some notification"`).

## Injeção de dependências { #dependency-injection }

        void shouldExecuteStrategiesInPriorityOrder() throws Exception {
            // This test verifies that strategies are executed in the order they are provided
            // The actual priority ordering is handled by dependency injection
            UpgradeContext context = createMockContext();
            Map<Path, Document> pomMap = Map.of(Paths.get("pom.xml"), mock(Document.class));

            // Mock all strategies as applicable

É isso que vamos resolver: vamos carregar o modelo antes de as requisições serem tratadas, mas apenas um pouco antes de a aplicação começar a receber requisições, não enquanto o código estiver sendo carregado.