from fastapi import Body, FastAPI, status
from fastapi.responses import JSONResponse

app = FastAPI()

items = {"foo": {"name": "Fighters", "size": 6}, "bar": {"name": "Tenders", "size": 3}}


@app.put("/items/{item_id}")
async def upsert_item(
    item_id: str,
    name: Annotated[str | None, Body()] = None,
    size: Annotated[int | None, Body()] = None,
):
    if item_id in items:
        item = items[item_id]

from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None


@app.put("/items/{item_id}")
async def update_item(
    item_id: Annotated[int, Path(title="The ID of the item to get", ge=0, le=1000)],
    q: Union[str, None] = None,
    item: Union[Item, None] = None,
):

    * Swagger UI.
    * ReDoc.

---

Um auf das vorherige Codebeispiel zurückzukommen, **FastAPI** wird:

* Validieren, dass es eine `item_id` im Pfad für `GET`- und `PUT`-Requests gibt.
* Validieren, ob die `item_id` vom Typ `int` für `GET`- und `PUT`-Requests ist.
    * Falls nicht, sieht der Client einen hilfreichen, klaren Fehler.

    }

    @Override
    @SuppressWarnings("unchecked")
    public void execute(ViolationCheckContext context) {
        Map<String, Object> userData = (Map<String, Object>) context.getUserData();
        userData.put("currentVersion", currentVersion);
    }

    }

    private void writeLastUpdated(File touchfile, String key, String error) {
        HashMap<String, String> update = new HashMap<>();
        update.put(key, Long.toString(System.currentTimeMillis()));
        update.put(key + ERROR_KEY_SUFFIX, error); // error==null => remove mapping
        trackingFileManager.update(touchfile, update);
    }

    Date readLastUpdated(File touchfile, String key) {

import inspect

from fastapi import APIRouter, FastAPI

method_names = ["get", "put", "post", "delete", "options", "head", "patch", "trace"]


def test_signatures_consistency():
    base_sig = inspect.signature(APIRouter.get)
    for method_name in method_names:
        router_method = getattr(APIRouter, method_name)
        app_method = getattr(FastAPI, method_name)
        router_sig = inspect.signature(router_method)

///

При створенні API, "шлях" є основним способом розділення "завдань" і "ресурсів".
#### Operation

"Операція" (operation) тут означає один з "методів" HTTP.

Один з:

* `POST`
* `GET`
* `PUT`
* `DELETE`

...та більш екзотичних:

* `OPTIONS`
* `HEAD`
* `PATCH`
* `TRACE`

У HTTP-протоколі можна спілкуватися з кожним шляхом, використовуючи один (або кілька) з цих "методів".

---

              Object value = new Object();
              result.put(key, value);
            }
            result.put(extraKey, extraValue);
            result.put(extraValue, null);
            return result;
          }
        };
    LoadingCache<Object, Object> cache = CacheBuilder.newBuilder().build(loader);
    cache.asMap().put(extraKey, extraKey);

                    registration.setState(WitnessRegistrationState.REGISTERED);
                    registration.setContextHandle(response.getContextHandle());
                    registrations.put(registration.getRegistrationId(), registration);
                    listeners.put(registration.getRegistrationId(), listener);

                    // Start async notification monitoring for this registration

                throw new VersionResolutionException(result);
            }
        }

        if (cacheKey != null && metadata != null && isSafelyCacheable(session, artifact)) {
            cache.put(session, cacheKey, new Record(result.getVersion(), result.getRepository()));
        }

        return result;
    }

    private boolean resolve(VersionResult result, Map<String, VersionInfo> infos, String key) {