Es solo una función que puede tomar todos los mismos parámetros que una *path operation function* puede tomar:

{* ../../docs_src/dependencies/tutorial001_an_py310.py hl[8:9] *}

Eso es todo.

**2 líneas**.

Y tiene la misma forma y estructura que todas tus *path operation functions*.

Puedes pensar en ella como una *path operation function* sin el "decorador" (sin el `@app.get("/some-path")`).

openapi_content = json.loads(file_path.read_text())

for path_data in openapi_content["paths"].values():
    for operation in path_data.values():
        tag = operation["tags"][0]
        operation_id = operation["operationId"]
        to_remove = f"{tag}-"
        new_operation_id = operation_id[len(to_remove) :]
        operation["operationId"] = new_operation_id

Similar to the way you can [add `dependencies` to the *path operation decorators*](dependencies-in-path-operation-decorators.md), you can add them to the `FastAPI` application.

In that case, they will be applied to all the *path operations* in the application:

{* ../../docs_src/dependencies/tutorial012_an_py310.py hl[17] *}

{* ../../docs_src/openapi_callbacks/tutorial001_py310.py hl[1,23] *}

### Create the callback *path operation* { #create-the-callback-path-operation }

To create the callback *path operation* use the same `APIRouter` you created above.

It should look just like a normal FastAPI *path operation*:

* It should probably have a declaration of the body it should receive, e.g. `body: InvoiceEvent`.

For example, when using GraphQL you normally perform all the actions using only `POST` operations.

///

### Step 4: define the **path operation function** { #step-4-define-the-path-operation-function }

This is our "**path operation function**":

* **path**: is `/`.
* **operation**: is `get`.
* **function**: is the function below the "decorator" (below `@app.get("/")`).

    /**
     * SAMR CloseHandle operation for closing an opened SAM handle.
     * This operation releases resources associated with the handle.
     */
    public static class SamrCloseHandle extends DcerpcMessage {

        @Override
        public int getOpnum() {
            return 0x01;
        }

        /** The return value of the operation */
        public int retval;

    /**
     * SAMR CloseHandle operation for closing an opened SAM handle.
     * This operation releases resources associated with the handle.
     */
    public static class SamrCloseHandle extends DcerpcMessage {

        @Override
        public int getOpnum() {
            return 0x01;
        }

        /** The return value of the operation */
        public int retval;

## Краткое описание и описание в документации — OpenAPI { #documentation-summary-and-description-openapi }

Чтобы добавить краткое описание и описание к вашим *операциям пути* и отобразить их в интерфейсе документации, прочитайте документацию: [Руководство — Конфигурации операций пути — Краткое описание и описание](../tutorial/path-operation-configuration.md#summary-and-description).

// A TF_ExecutionContext stores knowledge about how to execute an operation.
// E.g. it could know whether we're in eager mode or graph mode, keeps track
// of gradient tapes, etc.
typedef struct TF_ExecutionContext TF_ExecutionContext;

// A TF_AbstractTensor is an input to an operation. E.g. it could be a union
// type of eager and graph tensors. It is also the result of executing an
// operation.
typedef struct TF_AbstractTensor TF_AbstractTensor;

要定義在文件 UI 中顯示的回應描述，請參閱[教學 - 路徑操作設定 - 回應描述](../tutorial/path-operation-configuration.md#response-description)。

## 文件將*路徑操作*標記為已棄用 - OpenAPI { #documentation-deprecate-a-path-operation-openapi }

要將*路徑操作*標記為已棄用，並在文件 UI 中顯示，請參閱[教學 - 路徑操作設定 - 棄用](../tutorial/path-operation-configuration.md#deprecate-a-path-operation)。

## 將任意資料轉換為 JSON 相容格式 { #convert-any-data-to-json-compatible }

要將任意資料轉換為 JSON 相容格式，請參閱[教學 - JSON 相容編碼器](../tutorial/encoder.md)。