Skip to content

KafkaRouter

faststream.confluent.fastapi.KafkaRouter #

KafkaRouter(bootstrap_servers='localhost', *, request_timeout_ms=40 * 1000, retry_backoff_ms=100, metadata_max_age_ms=5 * 60 * 1000, connections_max_idle_ms=9 * 60 * 1000, client_id=SERVICE_NAME, allow_auto_create_topics=True, config=None, acks=EMPTY, compression_type=None, partitioner='consistent_random', max_request_size=1024 * 1024, linger_ms=0, enable_idempotence=False, transactional_id=None, transaction_timeout_ms=60 * 1000, graceful_timeout=15.0, decoder=None, parser=None, middlewares=(), security=None, asyncapi_url=None, protocol=None, protocol_version='auto', description=None, asyncapi_tags=None, logger=EMPTY, log_level=INFO, log_fmt=None, setup_state=True, schema_url='/asyncapi', prefix='', tags=None, dependencies=None, default_response_class=Default(JSONResponse), responses=None, callbacks=None, routes=None, redirect_slashes=True, default=None, dependency_overrides_provider=None, route_class=APIRoute, on_startup=None, on_shutdown=None, lifespan=None, deprecated=None, include_in_schema=True, generate_unique_id_function=Default(generate_unique_id))

Bases: StreamRouter[Union[Message, Tuple[Message, ...]]]

A class to represent a Kafka router.

Source code in faststream/confluent/fastapi/fastapi.py
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
def __init__(
    self,
    bootstrap_servers: Annotated[
        Union[str, Iterable[str]],
        Doc(
            """
        A `host[:port]` string (or list of `host[:port]` strings) that the consumer should contact to bootstrap
        initial cluster metadata.

        This does not have to be the full node list.
        It just needs to have at least one broker that will respond to a
        Metadata API Request. Default port is 9092.
        """
        ),
    ] = "localhost",
    *,
    # both
    request_timeout_ms: Annotated[
        int,
        Doc("Client request timeout in milliseconds."),
    ] = 40 * 1000,
    retry_backoff_ms: Annotated[
        int,
        Doc("Milliseconds to backoff when retrying on errors."),
    ] = 100,
    metadata_max_age_ms: Annotated[
        int,
        Doc(
            """
        The period of time in milliseconds after
        which we force a refresh of metadata even if we haven't seen any
        partition leadership changes to proactively discover any new
        brokers or partitions.
        """
        ),
    ] = 5 * 60 * 1000,
    connections_max_idle_ms: Annotated[
        int,
        Doc(
            """
         Close idle connections after the number
        of milliseconds specified by this config. Specifying `None` will
        disable idle checks.
        """
        ),
    ] = 9 * 60 * 1000,
    client_id: Annotated[
        Optional[str],
        Doc(
            """
        A name for this client. This string is passed in
        each request to servers and can be used to identify specific
        server-side log entries that correspond to this client. Also
        submitted to :class:`~.consumer.group_coordinator.GroupCoordinator`
        for logging with respect to consumer group administration.
        """
        ),
    ] = SERVICE_NAME,
    allow_auto_create_topics: Annotated[
        bool,
        Doc(
            """
        Allow automatic topic creation on the broker when subscribing to or assigning non-existent topics.
        """
        ),
    ] = True,
    config: Annotated[
        Optional["ConfluentConfig"],
        Doc(
            """
            Extra configuration for the confluent-kafka-python
            producer/consumer. See `confluent_kafka.Config <https://docs.confluent.io/platform/current/clients/confluent-kafka-python/html/index.html#kafka-client-configuration>`_.
            """
        ),
    ] = None,
    # publisher args
    acks: Annotated[
        Literal[0, 1, -1, "all"],
        Doc(
            """
        One of ``0``, ``1``, ``all``. The number of acknowledgments
        the producer requires the leader to have received before considering a
        request complete. This controls the durability of records that are
        sent. The following settings are common:

        * ``0``: Producer will not wait for any acknowledgment from the server
          at all. The message will immediately be added to the socket
          buffer and considered sent. No guarantee can be made that the
          server has received the record in this case, and the retries
          configuration will not take effect (as the client won't
          generally know of any failures). The offset given back for each
          record will always be set to -1.
        * ``1``: The broker leader will write the record to its local log but
          will respond without awaiting full acknowledgement from all
          followers. In this case should the leader fail immediately
          after acknowledging the record but before the followers have
          replicated it then the record will be lost.
        * ``all``: The broker leader will wait for the full set of in-sync
          replicas to acknowledge the record. This guarantees that the
          record will not be lost as long as at least one in-sync replica
          remains alive. This is the strongest available guarantee.

        If unset, defaults to ``acks=1``. If `enable_idempotence` is
        :data:`True` defaults to ``acks=all``.
        """
        ),
    ] = EMPTY,
    compression_type: Annotated[
        Optional[Literal["gzip", "snappy", "lz4", "zstd"]],
        Doc(
            """
        The compression type for all data generated bythe producer.
        Compression is of full batches of data, so the efficacy of batching
        will also impact the compression ratio (more batching means better
        compression).
        """
        ),
    ] = None,
    partitioner: Annotated[
        Union[
            str,
            Callable[
                [bytes, List[Partition], List[Partition]],
                Partition,
            ],
        ],
        Doc(
            """
        Callable used to determine which partition
        each message is assigned to. Called (after key serialization):
        ``partitioner(key_bytes, all_partitions, available_partitions)``.
        The default partitioner implementation hashes each non-None key
        using the same murmur2 algorithm as the Java client so that
        messages with the same key are assigned to the same partition.
        When a key is :data:`None`, the message is delivered to a random partition
        (filtered to partitions with available leaders only, if possible).
        """
        ),
    ] = "consistent_random",
    max_request_size: Annotated[
        int,
        Doc(
            """
        The maximum size of a request. This is also
        effectively a cap on the maximum record size. Note that the server
        has its own cap on record size which may be different from this.
        This setting will limit the number of record batches the producer
        will send in a single request to avoid sending huge requests.
        """
        ),
    ] = 1024 * 1024,
    linger_ms: Annotated[
        int,
        Doc(
            """
        The producer groups together any records that arrive
        in between request transmissions into a single batched request.
        Normally this occurs only under load when records arrive faster
        than they can be sent out. However in some circumstances the client
        may want to reduce the number of requests even under moderate load.
        This setting accomplishes this by adding a small amount of
        artificial delay; that is, if first request is processed faster,
        than `linger_ms`, producer will wait ``linger_ms - process_time``.
        """
        ),
    ] = 0,
    enable_idempotence: Annotated[
        bool,
        Doc(
            """
        When set to `True`, the producer will
        ensure that exactly one copy of each message is written in the
        stream. If `False`, producer retries due to broker failures,
        etc., may write duplicates of the retried message in the stream.
        Note that enabling idempotence acks to set to ``all``. If it is not
        explicitly set by the user it will be chosen.
        """
        ),
    ] = False,
    transactional_id: Optional[str] = None,
    transaction_timeout_ms: int = 60 * 1000,
    # broker base args
    graceful_timeout: Annotated[
        Optional[float],
        Doc(
            "Graceful shutdown timeout. Broker waits for all running subscribers completion before shut down."
        ),
    ] = 15.0,
    decoder: Annotated[
        Optional["CustomCallable"],
        Doc("Custom decoder object."),
    ] = None,
    parser: Annotated[
        Optional["CustomCallable"],
        Doc("Custom parser object."),
    ] = None,
    middlewares: Annotated[
        Sequence[
            Union[
                "BrokerMiddleware[Message]",
                "BrokerMiddleware[Tuple[Message, ...]]",
            ]
        ],
        Doc("Middlewares to apply to all broker publishers/subscribers."),
    ] = (),
    # AsyncAPI args
    security: Annotated[
        Optional["BaseSecurity"],
        Doc(
            "Security options to connect broker and generate AsyncAPI server security information."
        ),
    ] = None,
    asyncapi_url: Annotated[
        Optional[str],
        Doc("AsyncAPI hardcoded server addresses. Use `servers` if not specified."),
    ] = None,
    protocol: Annotated[
        Optional[str],
        Doc("AsyncAPI server protocol."),
    ] = None,
    protocol_version: Annotated[
        Optional[str],
        Doc("AsyncAPI server protocol version."),
    ] = "auto",
    description: Annotated[
        Optional[str],
        Doc("AsyncAPI server description."),
    ] = None,
    asyncapi_tags: Annotated[
        Optional[Iterable[Union["asyncapi.Tag", "asyncapi.TagDict"]]],
        Doc("AsyncAPI server tags."),
    ] = None,
    # logging args
    logger: Annotated[
        Optional["LoggerProto"],
        Doc("User specified logger to pass into Context and log service messages."),
    ] = EMPTY,
    log_level: Annotated[
        int,
        Doc("Service messages log level."),
    ] = logging.INFO,
    log_fmt: Annotated[
        Optional[str],
        Doc("Default logger log format."),
    ] = None,
    # StreamRouter options
    setup_state: Annotated[
        bool,
        Doc(
            "Whether to add broker to app scope in lifespan. "
            "You should disable this option at old ASGI servers."
        ),
    ] = True,
    schema_url: Annotated[
        Optional[str],
        Doc(
            "AsyncAPI schema url. You should set this option to `None` to disable AsyncAPI routes at all."
        ),
    ] = "/asyncapi",
    # FastAPI args
    prefix: Annotated[
        str,
        Doc("An optional path prefix for the router."),
    ] = "",
    tags: Annotated[
        Optional[List[Union[str, "Enum"]]],
        Doc(
            """
            A list of tags to be applied to all the *path operations* in this
            router.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    dependencies: Annotated[
        Optional[Sequence["params.Depends"]],
        Doc(
            """
            A list of dependencies (using `Depends()`) to be applied to all the
            *path and stream operations* in this router.

            Read more about it in the
            [FastAPI docs for Bigger Applications - Multiple Files](https://fastapi.tiangolo.com/tutorial/bigger-applications/#include-an-apirouter-with-a-custom-prefix-tags-responses-and-dependencies).
            """
        ),
    ] = None,
    default_response_class: Annotated[
        Type["Response"],
        Doc(
            """
            The default response class to be used.

            Read more in the
            [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/#default-response-class).
            """
        ),
    ] = Default(JSONResponse),
    responses: Annotated[
        Optional[Dict[Union[int, str], "AnyDict"]],
        Doc(
            """
            Additional responses to be shown in OpenAPI.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Additional Responses in OpenAPI](https://fastapi.tiangolo.com/advanced/additional-responses/).

            And in the
            [FastAPI docs for Bigger Applications](https://fastapi.tiangolo.com/tutorial/bigger-applications/#include-an-apirouter-with-a-custom-prefix-tags-responses-and-dependencies).
            """
        ),
    ] = None,
    callbacks: Annotated[
        Optional[List[BaseRoute]],
        Doc(
            """
            OpenAPI callbacks that should apply to all *path operations* in this
            router.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for OpenAPI Callbacks](https://fastapi.tiangolo.com/advanced/openapi-callbacks/).
            """
        ),
    ] = None,
    routes: Annotated[
        Optional[List[BaseRoute]],
        Doc(
            """
            **Note**: you probably shouldn't use this parameter, it is inherited
            from Starlette and supported for compatibility.

            ---

            A list of routes to serve incoming HTTP and WebSocket requests.
            """
        ),
        deprecated(
            """
            You normally wouldn't use this parameter with FastAPI, it is inherited
            from Starlette and supported for compatibility.

            In FastAPI, you normally would use the *path operation methods*,
            like `router.get()`, `router.post()`, etc.
            """
        ),
    ] = None,
    redirect_slashes: Annotated[
        bool,
        Doc(
            """
            Whether to detect and redirect slashes in URLs when the client doesn't
            use the same format.
            """
        ),
    ] = True,
    default: Annotated[
        Optional["ASGIApp"],
        Doc(
            """
            Default function handler for this router. Used to handle
            404 Not Found errors.
            """
        ),
    ] = None,
    dependency_overrides_provider: Annotated[
        Optional[Any],
        Doc(
            """
            Only used internally by FastAPI to handle dependency overrides.

            You shouldn't need to use it. It normally points to the `FastAPI` app
            object.
            """
        ),
    ] = None,
    route_class: Annotated[
        Type["APIRoute"],
        Doc(
            """
            Custom route (*path operation*) class to be used by this router.

            Read more about it in the
            [FastAPI docs for Custom Request and APIRoute class](https://fastapi.tiangolo.com/how-to/custom-request-and-route/#custom-apiroute-class-in-a-router).
            """
        ),
    ] = APIRoute,
    on_startup: Annotated[
        Optional[Sequence[Callable[[], Any]]],
        Doc(
            """
            A list of startup event handler functions.

            You should instead use the `lifespan` handlers.

            Read more in the [FastAPI docs for `lifespan`](https://fastapi.tiangolo.com/advanced/events/).
            """
        ),
    ] = None,
    on_shutdown: Annotated[
        Optional[Sequence[Callable[[], Any]]],
        Doc(
            """
            A list of shutdown event handler functions.

            You should instead use the `lifespan` handlers.

            Read more in the
            [FastAPI docs for `lifespan`](https://fastapi.tiangolo.com/advanced/events/).
            """
        ),
    ] = None,
    lifespan: Annotated[
        Optional["Lifespan[Any]"],
        Doc(
            """
            A `Lifespan` context manager handler. This replaces `startup` and
            `shutdown` functions with a single context manager.

            Read more in the
            [FastAPI docs for `lifespan`](https://fastapi.tiangolo.com/advanced/events/).
            """
        ),
    ] = None,
    deprecated: Annotated[
        Optional[bool],
        Doc(
            """
            Mark all *path operations* in this router as deprecated.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    include_in_schema: Annotated[
        bool,
        Doc(
            """
            To include (or not) all the *path operations* in this router in the
            generated OpenAPI.

            This affects the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Query Parameters and String Validations](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#exclude-from-openapi).
            """
        ),
    ] = True,
    generate_unique_id_function: Annotated[
        Callable[["APIRoute"], str],
        Doc(
            """
            Customize the function used to generate unique IDs for the *path
            operations* shown in the generated OpenAPI.

            This is particularly useful when automatically generating clients or
            SDKs for your API.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = Default(generate_unique_id),
) -> None:
    super().__init__(
        bootstrap_servers=bootstrap_servers,
        client_id=client_id,
        request_timeout_ms=request_timeout_ms,
        retry_backoff_ms=retry_backoff_ms,
        metadata_max_age_ms=metadata_max_age_ms,
        connections_max_idle_ms=connections_max_idle_ms,
        allow_auto_create_topics=allow_auto_create_topics,
        acks=acks,
        config=config,
        compression_type=compression_type,
        partitioner=partitioner,
        max_request_size=max_request_size,
        linger_ms=linger_ms,
        enable_idempotence=enable_idempotence,
        transactional_id=transactional_id,
        transaction_timeout_ms=transaction_timeout_ms,
        # broker args
        graceful_timeout=graceful_timeout,
        decoder=decoder,
        parser=parser,
        middlewares=middlewares,  # type: ignore[arg-type]
        schema_url=schema_url,
        setup_state=setup_state,
        # logger options
        logger=logger,
        log_level=log_level,
        log_fmt=log_fmt,
        # AsyncAPI options
        security=security,
        protocol=protocol,
        description=description,
        protocol_version=protocol_version,
        asyncapi_tags=asyncapi_tags,
        asyncapi_url=asyncapi_url,
        # FastAPI kwargs
        prefix=prefix,
        tags=tags,
        dependencies=dependencies,
        default_response_class=default_response_class,
        responses=responses,
        callbacks=callbacks,
        routes=routes,
        redirect_slashes=redirect_slashes,
        default=default,
        dependency_overrides_provider=dependency_overrides_provider,
        route_class=route_class,
        on_startup=on_startup,
        on_shutdown=on_shutdown,
        deprecated=deprecated,
        include_in_schema=include_in_schema,
        lifespan=lifespan,
        generate_unique_id_function=generate_unique_id_function,
    )

title instance-attribute #

title = ''

version instance-attribute #

version = ''

description instance-attribute #

description = ''

terms_of_service instance-attribute #

terms_of_service = None

license instance-attribute #

license = None

contact instance-attribute #

contact = None

asyncapi_tags instance-attribute #

asyncapi_tags = None

external_docs instance-attribute #

external_docs = None

identifier instance-attribute #

identifier = None

routes instance-attribute #

routes = [] if routes is None else list(routes)

redirect_slashes instance-attribute #

redirect_slashes = redirect_slashes

default instance-attribute #

default = not_found if default is None else default

on_startup instance-attribute #

on_startup = [] if on_startup is None else list(on_startup)

on_shutdown instance-attribute #

on_shutdown = [] if on_shutdown is None else list(on_shutdown)

lifespan_context instance-attribute #

lifespan_context = _DefaultLifespan(self)

middleware_stack instance-attribute #

middleware_stack = cls(middleware_stack, *args, **kwargs)

prefix instance-attribute #

prefix = prefix

tags instance-attribute #

tags = tags or []

dependencies instance-attribute #

dependencies = list(dependencies or [])

deprecated instance-attribute #

deprecated = deprecated

include_in_schema instance-attribute #

include_in_schema = include_in_schema

responses instance-attribute #

responses = responses or {}

callbacks instance-attribute #

callbacks = callbacks or []

dependency_overrides_provider instance-attribute #

dependency_overrides_provider = dependency_overrides_provider

route_class instance-attribute #

route_class = route_class

default_response_class instance-attribute #

default_response_class = default_response_class

generate_unique_id_function instance-attribute #

generate_unique_id_function = generate_unique_id_function

docs_router instance-attribute #

docs_router

schema instance-attribute #

schema = None

setup_state instance-attribute #

setup_state = setup_state

weak_dependencies_provider instance-attribute #

weak_dependencies_provider = WeakSet()

broker_class class-attribute instance-attribute #

broker_class = KafkaBroker

broker instance-attribute #

broker

not_found async #

not_found(scope, receive, send)
Source code in starlette/routing.py
async def not_found(self, scope: Scope, receive: Receive, send: Send) -> None:
    if scope["type"] == "websocket":
        websocket_close = WebSocketClose()
        await websocket_close(scope, receive, send)
        return

    # If we're running inside a starlette application then raise an
    # exception, so that the configurable exception handler can deal with
    # returning the response. For plain ASGI apps, just return the response.
    if "app" in scope:
        raise HTTPException(status_code=404)
    else:
        response = PlainTextResponse("Not Found", status_code=404)
    await response(scope, receive, send)

url_path_for #

url_path_for(name, /, **path_params)
Source code in starlette/routing.py
def url_path_for(self, name: str, /, **path_params: typing.Any) -> URLPath:
    for route in self.routes:
        try:
            return route.url_path_for(name, **path_params)
        except NoMatchFound:
            pass
    raise NoMatchFound(name, path_params)

startup async #

startup()

Run any .on_startup event handlers.

Source code in starlette/routing.py
async def startup(self) -> None:
    """
    Run any `.on_startup` event handlers.
    """
    for handler in self.on_startup:
        if is_async_callable(handler):
            await handler()
        else:
            handler()

shutdown async #

shutdown()

Run any .on_shutdown event handlers.

Source code in starlette/routing.py
async def shutdown(self) -> None:
    """
    Run any `.on_shutdown` event handlers.
    """
    for handler in self.on_shutdown:
        if is_async_callable(handler):
            await handler()
        else:
            handler()

lifespan async #

lifespan(scope, receive, send)

Handle ASGI lifespan messages, which allows us to manage application startup and shutdown events.

Source code in starlette/routing.py
async def lifespan(self, scope: Scope, receive: Receive, send: Send) -> None:
    """
    Handle ASGI lifespan messages, which allows us to manage application
    startup and shutdown events.
    """
    started = False
    app: typing.Any = scope.get("app")
    await receive()
    try:
        async with self.lifespan_context(app) as maybe_state:
            if maybe_state is not None:
                if "state" not in scope:
                    raise RuntimeError('The server does not support "state" in the lifespan scope.')
                scope["state"].update(maybe_state)
            await send({"type": "lifespan.startup.complete"})
            started = True
            await receive()
    except BaseException:
        exc_text = traceback.format_exc()
        if started:
            await send({"type": "lifespan.shutdown.failed", "message": exc_text})
        else:
            await send({"type": "lifespan.startup.failed", "message": exc_text})
        raise
    else:
        await send({"type": "lifespan.shutdown.complete"})

app async #

app(scope, receive, send)
Source code in starlette/routing.py
async def app(self, scope: Scope, receive: Receive, send: Send) -> None:
    assert scope["type"] in ("http", "websocket", "lifespan")

    if "router" not in scope:
        scope["router"] = self

    if scope["type"] == "lifespan":
        await self.lifespan(scope, receive, send)
        return

    partial = None

    for route in self.routes:
        # Determine if any route matches the incoming scope,
        # and hand over to the matching route if found.
        match, child_scope = route.matches(scope)
        if match == Match.FULL:
            scope.update(child_scope)
            await route.handle(scope, receive, send)
            return
        elif match == Match.PARTIAL and partial is None:
            partial = route
            partial_scope = child_scope

    if partial is not None:
        #  Handle partial matches. These are cases where an endpoint is
        # able to handle the request, but is not a preferred option.
        # We use this in particular to deal with "405 Method Not Allowed".
        scope.update(partial_scope)
        await partial.handle(scope, receive, send)
        return

    route_path = get_route_path(scope)
    if scope["type"] == "http" and self.redirect_slashes and route_path != "/":
        redirect_scope = dict(scope)
        if route_path.endswith("/"):
            redirect_scope["path"] = redirect_scope["path"].rstrip("/")
        else:
            redirect_scope["path"] = redirect_scope["path"] + "/"

        for route in self.routes:
            match, child_scope = route.matches(redirect_scope)
            if match != Match.NONE:
                redirect_url = URL(scope=redirect_scope)
                response = RedirectResponse(url=str(redirect_url))
                await response(scope, receive, send)
                return

    await self.default(scope, receive, send)

mount #

mount(path, app, name=None)
Source code in starlette/routing.py
def mount(self, path: str, app: ASGIApp, name: str | None = None) -> None:  # pragma: no cover
    route = Mount(path, app=app, name=name)
    self.routes.append(route)

host #

host(host, app, name=None)
Source code in starlette/routing.py
def host(self, host: str, app: ASGIApp, name: str | None = None) -> None:  # pragma: no cover
    route = Host(host, app=app, name=name)
    self.routes.append(route)

add_route #

add_route(path, endpoint, methods=None, name=None, include_in_schema=True)
Source code in starlette/routing.py
def add_route(
    self,
    path: str,
    endpoint: typing.Callable[[Request], typing.Awaitable[Response] | Response],
    methods: list[str] | None = None,
    name: str | None = None,
    include_in_schema: bool = True,
) -> None:  # pragma: no cover
    route = Route(
        path,
        endpoint=endpoint,
        methods=methods,
        name=name,
        include_in_schema=include_in_schema,
    )
    self.routes.append(route)

add_websocket_route #

add_websocket_route(path, endpoint, name=None)
Source code in starlette/routing.py
def add_websocket_route(
    self,
    path: str,
    endpoint: typing.Callable[[WebSocket], typing.Awaitable[None]],
    name: str | None = None,
) -> None:  # pragma: no cover
    route = WebSocketRoute(path, endpoint=endpoint, name=name)
    self.routes.append(route)

route #

route(path, methods=None, name=None, include_in_schema=True)
Source code in fastapi/routing.py
def route(
    self,
    path: str,
    methods: Optional[List[str]] = None,
    name: Optional[str] = None,
    include_in_schema: bool = True,
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    def decorator(func: DecoratedCallable) -> DecoratedCallable:
        self.add_route(
            path,
            func,
            methods=methods,
            name=name,
            include_in_schema=include_in_schema,
        )
        return func

    return decorator

websocket_route #

websocket_route(path, name=None)
Source code in fastapi/routing.py
def websocket_route(
    self, path: str, name: Union[str, None] = None
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    def decorator(func: DecoratedCallable) -> DecoratedCallable:
        self.add_websocket_route(path, func, name=name)
        return func

    return decorator

add_event_handler #

add_event_handler(event_type, func)
Source code in starlette/routing.py
def add_event_handler(self, event_type: str, func: typing.Callable[[], typing.Any]) -> None:  # pragma: no cover
    assert event_type in ("startup", "shutdown")

    if event_type == "startup":
        self.on_startup.append(func)
    else:
        self.on_shutdown.append(func)

on_event #

on_event(event_type)

Add an event handler for the router.

on_event is deprecated, use lifespan event handlers instead.

Read more about it in the FastAPI docs for Lifespan Events.

Source code in fastapi/routing.py
@deprecated(
    """
    on_event is deprecated, use lifespan event handlers instead.

    Read more about it in the
    [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).
    """
)
def on_event(
    self,
    event_type: Annotated[
        str,
        Doc(
            """
            The type of event. `startup` or `shutdown`.
            """
        ),
    ],
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    """
    Add an event handler for the router.

    `on_event` is deprecated, use `lifespan` event handlers instead.

    Read more about it in the
    [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/#alternative-events-deprecated).
    """

    def decorator(func: DecoratedCallable) -> DecoratedCallable:
        self.add_event_handler(event_type, func)
        return func

    return decorator

add_api_route #

add_api_route(path, endpoint, *, response_model=Default(None), status_code=None, tags=None, dependencies=None, summary=None, description=None, response_description='Successful Response', responses=None, deprecated=None, methods=None, operation_id=None, response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False, include_in_schema=True, response_class=Default(JSONResponse), name=None, route_class_override=None, callbacks=None, openapi_extra=None, generate_unique_id_function=Default(generate_unique_id))
Source code in fastapi/routing.py
def add_api_route(
    self,
    path: str,
    endpoint: Callable[..., Any],
    *,
    response_model: Any = Default(None),
    status_code: Optional[int] = None,
    tags: Optional[List[Union[str, Enum]]] = None,
    dependencies: Optional[Sequence[params.Depends]] = None,
    summary: Optional[str] = None,
    description: Optional[str] = None,
    response_description: str = "Successful Response",
    responses: Optional[Dict[Union[int, str], Dict[str, Any]]] = None,
    deprecated: Optional[bool] = None,
    methods: Optional[Union[Set[str], List[str]]] = None,
    operation_id: Optional[str] = None,
    response_model_include: Optional[IncEx] = None,
    response_model_exclude: Optional[IncEx] = None,
    response_model_by_alias: bool = True,
    response_model_exclude_unset: bool = False,
    response_model_exclude_defaults: bool = False,
    response_model_exclude_none: bool = False,
    include_in_schema: bool = True,
    response_class: Union[Type[Response], DefaultPlaceholder] = Default(
        JSONResponse
    ),
    name: Optional[str] = None,
    route_class_override: Optional[Type[APIRoute]] = None,
    callbacks: Optional[List[BaseRoute]] = None,
    openapi_extra: Optional[Dict[str, Any]] = None,
    generate_unique_id_function: Union[
        Callable[[APIRoute], str], DefaultPlaceholder
    ] = Default(generate_unique_id),
) -> None:
    route_class = route_class_override or self.route_class
    responses = responses or {}
    combined_responses = {**self.responses, **responses}
    current_response_class = get_value_or_default(
        response_class, self.default_response_class
    )
    current_tags = self.tags.copy()
    if tags:
        current_tags.extend(tags)
    current_dependencies = self.dependencies.copy()
    if dependencies:
        current_dependencies.extend(dependencies)
    current_callbacks = self.callbacks.copy()
    if callbacks:
        current_callbacks.extend(callbacks)
    current_generate_unique_id = get_value_or_default(
        generate_unique_id_function, self.generate_unique_id_function
    )
    route = route_class(
        self.prefix + path,
        endpoint=endpoint,
        response_model=response_model,
        status_code=status_code,
        tags=current_tags,
        dependencies=current_dependencies,
        summary=summary,
        description=description,
        response_description=response_description,
        responses=combined_responses,
        deprecated=deprecated or self.deprecated,
        methods=methods,
        operation_id=operation_id,
        response_model_include=response_model_include,
        response_model_exclude=response_model_exclude,
        response_model_by_alias=response_model_by_alias,
        response_model_exclude_unset=response_model_exclude_unset,
        response_model_exclude_defaults=response_model_exclude_defaults,
        response_model_exclude_none=response_model_exclude_none,
        include_in_schema=include_in_schema and self.include_in_schema,
        response_class=current_response_class,
        name=name,
        dependency_overrides_provider=self.dependency_overrides_provider,
        callbacks=current_callbacks,
        openapi_extra=openapi_extra,
        generate_unique_id_function=current_generate_unique_id,
    )
    self.routes.append(route)

api_route #

api_route(path, *, response_model=Default(None), status_code=None, tags=None, dependencies=None, summary=None, description=None, response_description='Successful Response', responses=None, deprecated=None, methods=None, operation_id=None, response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False, include_in_schema=True, response_class=Default(JSONResponse), name=None, callbacks=None, openapi_extra=None, generate_unique_id_function=Default(generate_unique_id))
Source code in fastapi/routing.py
def api_route(
    self,
    path: str,
    *,
    response_model: Any = Default(None),
    status_code: Optional[int] = None,
    tags: Optional[List[Union[str, Enum]]] = None,
    dependencies: Optional[Sequence[params.Depends]] = None,
    summary: Optional[str] = None,
    description: Optional[str] = None,
    response_description: str = "Successful Response",
    responses: Optional[Dict[Union[int, str], Dict[str, Any]]] = None,
    deprecated: Optional[bool] = None,
    methods: Optional[List[str]] = None,
    operation_id: Optional[str] = None,
    response_model_include: Optional[IncEx] = None,
    response_model_exclude: Optional[IncEx] = None,
    response_model_by_alias: bool = True,
    response_model_exclude_unset: bool = False,
    response_model_exclude_defaults: bool = False,
    response_model_exclude_none: bool = False,
    include_in_schema: bool = True,
    response_class: Type[Response] = Default(JSONResponse),
    name: Optional[str] = None,
    callbacks: Optional[List[BaseRoute]] = None,
    openapi_extra: Optional[Dict[str, Any]] = None,
    generate_unique_id_function: Callable[[APIRoute], str] = Default(
        generate_unique_id
    ),
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    def decorator(func: DecoratedCallable) -> DecoratedCallable:
        self.add_api_route(
            path,
            func,
            response_model=response_model,
            status_code=status_code,
            tags=tags,
            dependencies=dependencies,
            summary=summary,
            description=description,
            response_description=response_description,
            responses=responses,
            deprecated=deprecated,
            methods=methods,
            operation_id=operation_id,
            response_model_include=response_model_include,
            response_model_exclude=response_model_exclude,
            response_model_by_alias=response_model_by_alias,
            response_model_exclude_unset=response_model_exclude_unset,
            response_model_exclude_defaults=response_model_exclude_defaults,
            response_model_exclude_none=response_model_exclude_none,
            include_in_schema=include_in_schema,
            response_class=response_class,
            name=name,
            callbacks=callbacks,
            openapi_extra=openapi_extra,
            generate_unique_id_function=generate_unique_id_function,
        )
        return func

    return decorator

add_api_websocket_route #

add_api_websocket_route(path, endpoint, name=None, *, dependencies=None)
Source code in fastapi/routing.py
def add_api_websocket_route(
    self,
    path: str,
    endpoint: Callable[..., Any],
    name: Optional[str] = None,
    *,
    dependencies: Optional[Sequence[params.Depends]] = None,
) -> None:
    current_dependencies = self.dependencies.copy()
    if dependencies:
        current_dependencies.extend(dependencies)

    route = APIWebSocketRoute(
        self.prefix + path,
        endpoint=endpoint,
        name=name,
        dependencies=current_dependencies,
        dependency_overrides_provider=self.dependency_overrides_provider,
    )
    self.routes.append(route)

websocket #

websocket(path, name=None, *, dependencies=None)

Decorate a WebSocket function.

Read more about it in the FastAPI docs for WebSockets.

Example

Example#
from fastapi import APIRouter, FastAPI, WebSocket

app = FastAPI()
router = APIRouter()

@router.websocket("/ws")
async def websocket_endpoint(websocket: WebSocket):
    await websocket.accept()
    while True:
        data = await websocket.receive_text()
        await websocket.send_text(f"Message text was: {data}")

app.include_router(router)
Source code in fastapi/routing.py
def websocket(
    self,
    path: Annotated[
        str,
        Doc(
            """
            WebSocket path.
            """
        ),
    ],
    name: Annotated[
        Optional[str],
        Doc(
            """
            A name for the WebSocket. Only used internally.
            """
        ),
    ] = None,
    *,
    dependencies: Annotated[
        Optional[Sequence[params.Depends]],
        Doc(
            """
            A list of dependencies (using `Depends()`) to be used for this
            WebSocket.

            Read more about it in the
            [FastAPI docs for WebSockets](https://fastapi.tiangolo.com/advanced/websockets/).
            """
        ),
    ] = None,
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    """
    Decorate a WebSocket function.

    Read more about it in the
    [FastAPI docs for WebSockets](https://fastapi.tiangolo.com/advanced/websockets/).

    **Example**

    ## Example

    ```python
    from fastapi import APIRouter, FastAPI, WebSocket

    app = FastAPI()
    router = APIRouter()

    @router.websocket("/ws")
    async def websocket_endpoint(websocket: WebSocket):
        await websocket.accept()
        while True:
            data = await websocket.receive_text()
            await websocket.send_text(f"Message text was: {data}")

    app.include_router(router)
    ```
    """

    def decorator(func: DecoratedCallable) -> DecoratedCallable:
        self.add_api_websocket_route(
            path, func, name=name, dependencies=dependencies
        )
        return func

    return decorator

include_router #

include_router(router, *, prefix='', tags=None, dependencies=None, default_response_class=Default(JSONResponse), responses=None, callbacks=None, deprecated=None, include_in_schema=True, generate_unique_id_function=Default(generate_unique_id))

Includes a router in the API.

Source code in faststream/broker/fastapi/router.py
def include_router(  # type: ignore[override]
    self,
    router: Union["StreamRouter[MsgType]", "BrokerRouter[MsgType]"],
    *,
    prefix: str = "",
    tags: Optional[List[Union[str, Enum]]] = None,
    dependencies: Optional[Sequence["params.Depends"]] = None,
    default_response_class: Type[Response] = Default(JSONResponse),
    responses: Optional[Dict[Union[int, str], "AnyDict"]] = None,
    callbacks: Optional[List["BaseRoute"]] = None,
    deprecated: Optional[bool] = None,
    include_in_schema: bool = True,
    generate_unique_id_function: Callable[["APIRoute"], str] = Default(
        generate_unique_id
    ),
) -> None:
    """Includes a router in the API."""
    if isinstance(router, BrokerRouter):
        for sub in router._subscribers.values():
            sub._call_decorators = (  # type: ignore[attr-defined]
                self._add_api_mq_route(
                    dependencies=(),
                    response_model=Default(None),
                    response_model_include=None,
                    response_model_exclude=None,
                    response_model_by_alias=True,
                    response_model_exclude_unset=False,
                    response_model_exclude_defaults=False,
                    response_model_exclude_none=False,
                ),
            )

        self.broker.include_router(router)
        return

    if isinstance(router, StreamRouter):  # pragma: no branch
        router.lifespan_context = fake_context
        self.broker.include_router(router.broker)
        router.weak_dependencies_provider = self.weak_dependencies_provider

    super().include_router(
        router=router,
        prefix=prefix,
        tags=tags,
        dependencies=dependencies,
        default_response_class=default_response_class,
        responses=responses,
        callbacks=callbacks,
        deprecated=deprecated,
        include_in_schema=include_in_schema,
        generate_unique_id_function=generate_unique_id_function,
    )

get #

get(path, *, response_model=Default(None), status_code=None, tags=None, dependencies=None, summary=None, description=None, response_description='Successful Response', responses=None, deprecated=None, operation_id=None, response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False, include_in_schema=True, response_class=Default(JSONResponse), name=None, callbacks=None, openapi_extra=None, generate_unique_id_function=Default(generate_unique_id))

Add a path operation using an HTTP GET operation.

Example#
from fastapi import APIRouter, FastAPI

app = FastAPI()
router = APIRouter()

@router.get("/items/")
def read_items():
    return [{"name": "Empanada"}, {"name": "Arepa"}]

app.include_router(router)
Source code in fastapi/routing.py
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
def get(
    self,
    path: Annotated[
        str,
        Doc(
            """
            The URL path to be used for this *path operation*.

            For example, in `http://example.com/items`, the path is `/items`.
            """
        ),
    ],
    *,
    response_model: Annotated[
        Any,
        Doc(
            """
            The type to use for the response.

            It could be any valid Pydantic *field* type. So, it doesn't have to
            be a Pydantic model, it could be other things, like a `list`, `dict`,
            etc.

            It will be used for:

            * Documentation: the generated OpenAPI (and the UI at `/docs`) will
                show it as the response (JSON Schema).
            * Serialization: you could return an arbitrary object and the
                `response_model` would be used to serialize that object into the
                corresponding JSON.
            * Filtering: the JSON sent to the client will only contain the data
                (fields) defined in the `response_model`. If you returned an object
                that contains an attribute `password` but the `response_model` does
                not include that field, the JSON sent to the client would not have
                that `password`.
            * Validation: whatever you return will be serialized with the
                `response_model`, converting any data as necessary to generate the
                corresponding JSON. But if the data in the object returned is not
                valid, that would mean a violation of the contract with the client,
                so it's an error from the API developer. So, FastAPI will raise an
                error and return a 500 error code (Internal Server Error).

            Read more about it in the
            [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).
            """
        ),
    ] = Default(None),
    status_code: Annotated[
        Optional[int],
        Doc(
            """
            The default status code to be used for the response.

            You could override the status code by returning a response directly.

            Read more about it in the
            [FastAPI docs for Response Status Code](https://fastapi.tiangolo.com/tutorial/response-status-code/).
            """
        ),
    ] = None,
    tags: Annotated[
        Optional[List[Union[str, Enum]]],
        Doc(
            """
            A list of tags to be applied to the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/#tags).
            """
        ),
    ] = None,
    dependencies: Annotated[
        Optional[Sequence[params.Depends]],
        Doc(
            """
            A list of dependencies (using `Depends()`) to be applied to the
            *path operation*.

            Read more about it in the
            [FastAPI docs for Dependencies in path operation decorators](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-in-path-operation-decorators/).
            """
        ),
    ] = None,
    summary: Annotated[
        Optional[str],
        Doc(
            """
            A summary for the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    description: Annotated[
        Optional[str],
        Doc(
            """
            A description for the *path operation*.

            If not provided, it will be extracted automatically from the docstring
            of the *path operation function*.

            It can contain Markdown.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    response_description: Annotated[
        str,
        Doc(
            """
            The description for the default response.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = "Successful Response",
    responses: Annotated[
        Optional[Dict[Union[int, str], Dict[str, Any]]],
        Doc(
            """
            Additional responses that could be returned by this *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    deprecated: Annotated[
        Optional[bool],
        Doc(
            """
            Mark this *path operation* as deprecated.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    operation_id: Annotated[
        Optional[str],
        Doc(
            """
            Custom operation ID to be used by this *path operation*.

            By default, it is generated automatically.

            If you provide a custom operation ID, you need to make sure it is
            unique for the whole API.

            You can customize the
            operation ID generation with the parameter
            `generate_unique_id_function` in the `FastAPI` class.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = None,
    response_model_include: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to include only certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_exclude: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to exclude certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_by_alias: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response model
            should be serialized by alias when an alias is used.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = True,
    response_model_exclude_unset: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that were not set and
            have their default values. This is different from
            `response_model_exclude_defaults` in that if the fields are set,
            they will be included in the response, even if the value is the same
            as the default.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_defaults: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that have the same value
            as the default. This is different from `response_model_exclude_unset`
            in that if the fields are set but contain the same default values,
            they will be excluded from the response.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_none: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data should
            exclude fields set to `None`.

            This is much simpler (less smart) than `response_model_exclude_unset`
            and `response_model_exclude_defaults`. You probably want to use one of
            those two instead of this one, as those allow returning `None` values
            when it makes sense.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_exclude_none).
            """
        ),
    ] = False,
    include_in_schema: Annotated[
        bool,
        Doc(
            """
            Include this *path operation* in the generated OpenAPI schema.

            This affects the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Query Parameters and String Validations](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#exclude-from-openapi).
            """
        ),
    ] = True,
    response_class: Annotated[
        Type[Response],
        Doc(
            """
            Response class to be used for this *path operation*.

            This will not be used if you return a response directly.

            Read more about it in the
            [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/#redirectresponse).
            """
        ),
    ] = Default(JSONResponse),
    name: Annotated[
        Optional[str],
        Doc(
            """
            Name for this *path operation*. Only used internally.
            """
        ),
    ] = None,
    callbacks: Annotated[
        Optional[List[BaseRoute]],
        Doc(
            """
            List of *path operations* that will be used as OpenAPI callbacks.

            This is only for OpenAPI documentation, the callbacks won't be used
            directly.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for OpenAPI Callbacks](https://fastapi.tiangolo.com/advanced/openapi-callbacks/).
            """
        ),
    ] = None,
    openapi_extra: Annotated[
        Optional[Dict[str, Any]],
        Doc(
            """
            Extra metadata to be included in the OpenAPI schema for this *path
            operation*.

            Read more about it in the
            [FastAPI docs for Path Operation Advanced Configuration](https://fastapi.tiangolo.com/advanced/path-operation-advanced-configuration/#custom-openapi-path-operation-schema).
            """
        ),
    ] = None,
    generate_unique_id_function: Annotated[
        Callable[[APIRoute], str],
        Doc(
            """
            Customize the function used to generate unique IDs for the *path
            operations* shown in the generated OpenAPI.

            This is particularly useful when automatically generating clients or
            SDKs for your API.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = Default(generate_unique_id),
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    """
    Add a *path operation* using an HTTP GET operation.

    ## Example

    ```python
    from fastapi import APIRouter, FastAPI

    app = FastAPI()
    router = APIRouter()

    @router.get("/items/")
    def read_items():
        return [{"name": "Empanada"}, {"name": "Arepa"}]

    app.include_router(router)
    ```
    """
    return self.api_route(
        path=path,
        response_model=response_model,
        status_code=status_code,
        tags=tags,
        dependencies=dependencies,
        summary=summary,
        description=description,
        response_description=response_description,
        responses=responses,
        deprecated=deprecated,
        methods=["GET"],
        operation_id=operation_id,
        response_model_include=response_model_include,
        response_model_exclude=response_model_exclude,
        response_model_by_alias=response_model_by_alias,
        response_model_exclude_unset=response_model_exclude_unset,
        response_model_exclude_defaults=response_model_exclude_defaults,
        response_model_exclude_none=response_model_exclude_none,
        include_in_schema=include_in_schema,
        response_class=response_class,
        name=name,
        callbacks=callbacks,
        openapi_extra=openapi_extra,
        generate_unique_id_function=generate_unique_id_function,
    )

put #

put(path, *, response_model=Default(None), status_code=None, tags=None, dependencies=None, summary=None, description=None, response_description='Successful Response', responses=None, deprecated=None, operation_id=None, response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False, include_in_schema=True, response_class=Default(JSONResponse), name=None, callbacks=None, openapi_extra=None, generate_unique_id_function=Default(generate_unique_id))

Add a path operation using an HTTP PUT operation.

Example#
from fastapi import APIRouter, FastAPI
from pydantic import BaseModel

class Item(BaseModel):
    name: str
    description: str | None = None

app = FastAPI()
router = APIRouter()

@router.put("/items/{item_id}")
def replace_item(item_id: str, item: Item):
    return {"message": "Item replaced", "id": item_id}

app.include_router(router)
Source code in fastapi/routing.py
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
def put(
    self,
    path: Annotated[
        str,
        Doc(
            """
            The URL path to be used for this *path operation*.

            For example, in `http://example.com/items`, the path is `/items`.
            """
        ),
    ],
    *,
    response_model: Annotated[
        Any,
        Doc(
            """
            The type to use for the response.

            It could be any valid Pydantic *field* type. So, it doesn't have to
            be a Pydantic model, it could be other things, like a `list`, `dict`,
            etc.

            It will be used for:

            * Documentation: the generated OpenAPI (and the UI at `/docs`) will
                show it as the response (JSON Schema).
            * Serialization: you could return an arbitrary object and the
                `response_model` would be used to serialize that object into the
                corresponding JSON.
            * Filtering: the JSON sent to the client will only contain the data
                (fields) defined in the `response_model`. If you returned an object
                that contains an attribute `password` but the `response_model` does
                not include that field, the JSON sent to the client would not have
                that `password`.
            * Validation: whatever you return will be serialized with the
                `response_model`, converting any data as necessary to generate the
                corresponding JSON. But if the data in the object returned is not
                valid, that would mean a violation of the contract with the client,
                so it's an error from the API developer. So, FastAPI will raise an
                error and return a 500 error code (Internal Server Error).

            Read more about it in the
            [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).
            """
        ),
    ] = Default(None),
    status_code: Annotated[
        Optional[int],
        Doc(
            """
            The default status code to be used for the response.

            You could override the status code by returning a response directly.

            Read more about it in the
            [FastAPI docs for Response Status Code](https://fastapi.tiangolo.com/tutorial/response-status-code/).
            """
        ),
    ] = None,
    tags: Annotated[
        Optional[List[Union[str, Enum]]],
        Doc(
            """
            A list of tags to be applied to the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/#tags).
            """
        ),
    ] = None,
    dependencies: Annotated[
        Optional[Sequence[params.Depends]],
        Doc(
            """
            A list of dependencies (using `Depends()`) to be applied to the
            *path operation*.

            Read more about it in the
            [FastAPI docs for Dependencies in path operation decorators](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-in-path-operation-decorators/).
            """
        ),
    ] = None,
    summary: Annotated[
        Optional[str],
        Doc(
            """
            A summary for the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    description: Annotated[
        Optional[str],
        Doc(
            """
            A description for the *path operation*.

            If not provided, it will be extracted automatically from the docstring
            of the *path operation function*.

            It can contain Markdown.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    response_description: Annotated[
        str,
        Doc(
            """
            The description for the default response.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = "Successful Response",
    responses: Annotated[
        Optional[Dict[Union[int, str], Dict[str, Any]]],
        Doc(
            """
            Additional responses that could be returned by this *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    deprecated: Annotated[
        Optional[bool],
        Doc(
            """
            Mark this *path operation* as deprecated.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    operation_id: Annotated[
        Optional[str],
        Doc(
            """
            Custom operation ID to be used by this *path operation*.

            By default, it is generated automatically.

            If you provide a custom operation ID, you need to make sure it is
            unique for the whole API.

            You can customize the
            operation ID generation with the parameter
            `generate_unique_id_function` in the `FastAPI` class.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = None,
    response_model_include: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to include only certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_exclude: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to exclude certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_by_alias: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response model
            should be serialized by alias when an alias is used.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = True,
    response_model_exclude_unset: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that were not set and
            have their default values. This is different from
            `response_model_exclude_defaults` in that if the fields are set,
            they will be included in the response, even if the value is the same
            as the default.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_defaults: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that have the same value
            as the default. This is different from `response_model_exclude_unset`
            in that if the fields are set but contain the same default values,
            they will be excluded from the response.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_none: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data should
            exclude fields set to `None`.

            This is much simpler (less smart) than `response_model_exclude_unset`
            and `response_model_exclude_defaults`. You probably want to use one of
            those two instead of this one, as those allow returning `None` values
            when it makes sense.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_exclude_none).
            """
        ),
    ] = False,
    include_in_schema: Annotated[
        bool,
        Doc(
            """
            Include this *path operation* in the generated OpenAPI schema.

            This affects the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Query Parameters and String Validations](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#exclude-from-openapi).
            """
        ),
    ] = True,
    response_class: Annotated[
        Type[Response],
        Doc(
            """
            Response class to be used for this *path operation*.

            This will not be used if you return a response directly.

            Read more about it in the
            [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/#redirectresponse).
            """
        ),
    ] = Default(JSONResponse),
    name: Annotated[
        Optional[str],
        Doc(
            """
            Name for this *path operation*. Only used internally.
            """
        ),
    ] = None,
    callbacks: Annotated[
        Optional[List[BaseRoute]],
        Doc(
            """
            List of *path operations* that will be used as OpenAPI callbacks.

            This is only for OpenAPI documentation, the callbacks won't be used
            directly.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for OpenAPI Callbacks](https://fastapi.tiangolo.com/advanced/openapi-callbacks/).
            """
        ),
    ] = None,
    openapi_extra: Annotated[
        Optional[Dict[str, Any]],
        Doc(
            """
            Extra metadata to be included in the OpenAPI schema for this *path
            operation*.

            Read more about it in the
            [FastAPI docs for Path Operation Advanced Configuration](https://fastapi.tiangolo.com/advanced/path-operation-advanced-configuration/#custom-openapi-path-operation-schema).
            """
        ),
    ] = None,
    generate_unique_id_function: Annotated[
        Callable[[APIRoute], str],
        Doc(
            """
            Customize the function used to generate unique IDs for the *path
            operations* shown in the generated OpenAPI.

            This is particularly useful when automatically generating clients or
            SDKs for your API.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = Default(generate_unique_id),
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    """
    Add a *path operation* using an HTTP PUT operation.

    ## Example

    ```python
    from fastapi import APIRouter, FastAPI
    from pydantic import BaseModel

    class Item(BaseModel):
        name: str
        description: str | None = None

    app = FastAPI()
    router = APIRouter()

    @router.put("/items/{item_id}")
    def replace_item(item_id: str, item: Item):
        return {"message": "Item replaced", "id": item_id}

    app.include_router(router)
    ```
    """
    return self.api_route(
        path=path,
        response_model=response_model,
        status_code=status_code,
        tags=tags,
        dependencies=dependencies,
        summary=summary,
        description=description,
        response_description=response_description,
        responses=responses,
        deprecated=deprecated,
        methods=["PUT"],
        operation_id=operation_id,
        response_model_include=response_model_include,
        response_model_exclude=response_model_exclude,
        response_model_by_alias=response_model_by_alias,
        response_model_exclude_unset=response_model_exclude_unset,
        response_model_exclude_defaults=response_model_exclude_defaults,
        response_model_exclude_none=response_model_exclude_none,
        include_in_schema=include_in_schema,
        response_class=response_class,
        name=name,
        callbacks=callbacks,
        openapi_extra=openapi_extra,
        generate_unique_id_function=generate_unique_id_function,
    )

post #

post(path, *, response_model=Default(None), status_code=None, tags=None, dependencies=None, summary=None, description=None, response_description='Successful Response', responses=None, deprecated=None, operation_id=None, response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False, include_in_schema=True, response_class=Default(JSONResponse), name=None, callbacks=None, openapi_extra=None, generate_unique_id_function=Default(generate_unique_id))

Add a path operation using an HTTP POST operation.

Example#
from fastapi import APIRouter, FastAPI
from pydantic import BaseModel

class Item(BaseModel):
    name: str
    description: str | None = None

app = FastAPI()
router = APIRouter()

@router.post("/items/")
def create_item(item: Item):
    return {"message": "Item created"}

app.include_router(router)
Source code in fastapi/routing.py
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
def post(
    self,
    path: Annotated[
        str,
        Doc(
            """
            The URL path to be used for this *path operation*.

            For example, in `http://example.com/items`, the path is `/items`.
            """
        ),
    ],
    *,
    response_model: Annotated[
        Any,
        Doc(
            """
            The type to use for the response.

            It could be any valid Pydantic *field* type. So, it doesn't have to
            be a Pydantic model, it could be other things, like a `list`, `dict`,
            etc.

            It will be used for:

            * Documentation: the generated OpenAPI (and the UI at `/docs`) will
                show it as the response (JSON Schema).
            * Serialization: you could return an arbitrary object and the
                `response_model` would be used to serialize that object into the
                corresponding JSON.
            * Filtering: the JSON sent to the client will only contain the data
                (fields) defined in the `response_model`. If you returned an object
                that contains an attribute `password` but the `response_model` does
                not include that field, the JSON sent to the client would not have
                that `password`.
            * Validation: whatever you return will be serialized with the
                `response_model`, converting any data as necessary to generate the
                corresponding JSON. But if the data in the object returned is not
                valid, that would mean a violation of the contract with the client,
                so it's an error from the API developer. So, FastAPI will raise an
                error and return a 500 error code (Internal Server Error).

            Read more about it in the
            [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).
            """
        ),
    ] = Default(None),
    status_code: Annotated[
        Optional[int],
        Doc(
            """
            The default status code to be used for the response.

            You could override the status code by returning a response directly.

            Read more about it in the
            [FastAPI docs for Response Status Code](https://fastapi.tiangolo.com/tutorial/response-status-code/).
            """
        ),
    ] = None,
    tags: Annotated[
        Optional[List[Union[str, Enum]]],
        Doc(
            """
            A list of tags to be applied to the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/#tags).
            """
        ),
    ] = None,
    dependencies: Annotated[
        Optional[Sequence[params.Depends]],
        Doc(
            """
            A list of dependencies (using `Depends()`) to be applied to the
            *path operation*.

            Read more about it in the
            [FastAPI docs for Dependencies in path operation decorators](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-in-path-operation-decorators/).
            """
        ),
    ] = None,
    summary: Annotated[
        Optional[str],
        Doc(
            """
            A summary for the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    description: Annotated[
        Optional[str],
        Doc(
            """
            A description for the *path operation*.

            If not provided, it will be extracted automatically from the docstring
            of the *path operation function*.

            It can contain Markdown.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    response_description: Annotated[
        str,
        Doc(
            """
            The description for the default response.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = "Successful Response",
    responses: Annotated[
        Optional[Dict[Union[int, str], Dict[str, Any]]],
        Doc(
            """
            Additional responses that could be returned by this *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    deprecated: Annotated[
        Optional[bool],
        Doc(
            """
            Mark this *path operation* as deprecated.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    operation_id: Annotated[
        Optional[str],
        Doc(
            """
            Custom operation ID to be used by this *path operation*.

            By default, it is generated automatically.

            If you provide a custom operation ID, you need to make sure it is
            unique for the whole API.

            You can customize the
            operation ID generation with the parameter
            `generate_unique_id_function` in the `FastAPI` class.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = None,
    response_model_include: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to include only certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_exclude: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to exclude certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_by_alias: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response model
            should be serialized by alias when an alias is used.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = True,
    response_model_exclude_unset: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that were not set and
            have their default values. This is different from
            `response_model_exclude_defaults` in that if the fields are set,
            they will be included in the response, even if the value is the same
            as the default.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_defaults: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that have the same value
            as the default. This is different from `response_model_exclude_unset`
            in that if the fields are set but contain the same default values,
            they will be excluded from the response.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_none: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data should
            exclude fields set to `None`.

            This is much simpler (less smart) than `response_model_exclude_unset`
            and `response_model_exclude_defaults`. You probably want to use one of
            those two instead of this one, as those allow returning `None` values
            when it makes sense.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_exclude_none).
            """
        ),
    ] = False,
    include_in_schema: Annotated[
        bool,
        Doc(
            """
            Include this *path operation* in the generated OpenAPI schema.

            This affects the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Query Parameters and String Validations](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#exclude-from-openapi).
            """
        ),
    ] = True,
    response_class: Annotated[
        Type[Response],
        Doc(
            """
            Response class to be used for this *path operation*.

            This will not be used if you return a response directly.

            Read more about it in the
            [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/#redirectresponse).
            """
        ),
    ] = Default(JSONResponse),
    name: Annotated[
        Optional[str],
        Doc(
            """
            Name for this *path operation*. Only used internally.
            """
        ),
    ] = None,
    callbacks: Annotated[
        Optional[List[BaseRoute]],
        Doc(
            """
            List of *path operations* that will be used as OpenAPI callbacks.

            This is only for OpenAPI documentation, the callbacks won't be used
            directly.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for OpenAPI Callbacks](https://fastapi.tiangolo.com/advanced/openapi-callbacks/).
            """
        ),
    ] = None,
    openapi_extra: Annotated[
        Optional[Dict[str, Any]],
        Doc(
            """
            Extra metadata to be included in the OpenAPI schema for this *path
            operation*.

            Read more about it in the
            [FastAPI docs for Path Operation Advanced Configuration](https://fastapi.tiangolo.com/advanced/path-operation-advanced-configuration/#custom-openapi-path-operation-schema).
            """
        ),
    ] = None,
    generate_unique_id_function: Annotated[
        Callable[[APIRoute], str],
        Doc(
            """
            Customize the function used to generate unique IDs for the *path
            operations* shown in the generated OpenAPI.

            This is particularly useful when automatically generating clients or
            SDKs for your API.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = Default(generate_unique_id),
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    """
    Add a *path operation* using an HTTP POST operation.

    ## Example

    ```python
    from fastapi import APIRouter, FastAPI
    from pydantic import BaseModel

    class Item(BaseModel):
        name: str
        description: str | None = None

    app = FastAPI()
    router = APIRouter()

    @router.post("/items/")
    def create_item(item: Item):
        return {"message": "Item created"}

    app.include_router(router)
    ```
    """
    return self.api_route(
        path=path,
        response_model=response_model,
        status_code=status_code,
        tags=tags,
        dependencies=dependencies,
        summary=summary,
        description=description,
        response_description=response_description,
        responses=responses,
        deprecated=deprecated,
        methods=["POST"],
        operation_id=operation_id,
        response_model_include=response_model_include,
        response_model_exclude=response_model_exclude,
        response_model_by_alias=response_model_by_alias,
        response_model_exclude_unset=response_model_exclude_unset,
        response_model_exclude_defaults=response_model_exclude_defaults,
        response_model_exclude_none=response_model_exclude_none,
        include_in_schema=include_in_schema,
        response_class=response_class,
        name=name,
        callbacks=callbacks,
        openapi_extra=openapi_extra,
        generate_unique_id_function=generate_unique_id_function,
    )

delete #

delete(path, *, response_model=Default(None), status_code=None, tags=None, dependencies=None, summary=None, description=None, response_description='Successful Response', responses=None, deprecated=None, operation_id=None, response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False, include_in_schema=True, response_class=Default(JSONResponse), name=None, callbacks=None, openapi_extra=None, generate_unique_id_function=Default(generate_unique_id))

Add a path operation using an HTTP DELETE operation.

Example#
from fastapi import APIRouter, FastAPI

app = FastAPI()
router = APIRouter()

@router.delete("/items/{item_id}")
def delete_item(item_id: str):
    return {"message": "Item deleted"}

app.include_router(router)
Source code in fastapi/routing.py
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
def delete(
    self,
    path: Annotated[
        str,
        Doc(
            """
            The URL path to be used for this *path operation*.

            For example, in `http://example.com/items`, the path is `/items`.
            """
        ),
    ],
    *,
    response_model: Annotated[
        Any,
        Doc(
            """
            The type to use for the response.

            It could be any valid Pydantic *field* type. So, it doesn't have to
            be a Pydantic model, it could be other things, like a `list`, `dict`,
            etc.

            It will be used for:

            * Documentation: the generated OpenAPI (and the UI at `/docs`) will
                show it as the response (JSON Schema).
            * Serialization: you could return an arbitrary object and the
                `response_model` would be used to serialize that object into the
                corresponding JSON.
            * Filtering: the JSON sent to the client will only contain the data
                (fields) defined in the `response_model`. If you returned an object
                that contains an attribute `password` but the `response_model` does
                not include that field, the JSON sent to the client would not have
                that `password`.
            * Validation: whatever you return will be serialized with the
                `response_model`, converting any data as necessary to generate the
                corresponding JSON. But if the data in the object returned is not
                valid, that would mean a violation of the contract with the client,
                so it's an error from the API developer. So, FastAPI will raise an
                error and return a 500 error code (Internal Server Error).

            Read more about it in the
            [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).
            """
        ),
    ] = Default(None),
    status_code: Annotated[
        Optional[int],
        Doc(
            """
            The default status code to be used for the response.

            You could override the status code by returning a response directly.

            Read more about it in the
            [FastAPI docs for Response Status Code](https://fastapi.tiangolo.com/tutorial/response-status-code/).
            """
        ),
    ] = None,
    tags: Annotated[
        Optional[List[Union[str, Enum]]],
        Doc(
            """
            A list of tags to be applied to the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/#tags).
            """
        ),
    ] = None,
    dependencies: Annotated[
        Optional[Sequence[params.Depends]],
        Doc(
            """
            A list of dependencies (using `Depends()`) to be applied to the
            *path operation*.

            Read more about it in the
            [FastAPI docs for Dependencies in path operation decorators](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-in-path-operation-decorators/).
            """
        ),
    ] = None,
    summary: Annotated[
        Optional[str],
        Doc(
            """
            A summary for the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    description: Annotated[
        Optional[str],
        Doc(
            """
            A description for the *path operation*.

            If not provided, it will be extracted automatically from the docstring
            of the *path operation function*.

            It can contain Markdown.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    response_description: Annotated[
        str,
        Doc(
            """
            The description for the default response.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = "Successful Response",
    responses: Annotated[
        Optional[Dict[Union[int, str], Dict[str, Any]]],
        Doc(
            """
            Additional responses that could be returned by this *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    deprecated: Annotated[
        Optional[bool],
        Doc(
            """
            Mark this *path operation* as deprecated.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    operation_id: Annotated[
        Optional[str],
        Doc(
            """
            Custom operation ID to be used by this *path operation*.

            By default, it is generated automatically.

            If you provide a custom operation ID, you need to make sure it is
            unique for the whole API.

            You can customize the
            operation ID generation with the parameter
            `generate_unique_id_function` in the `FastAPI` class.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = None,
    response_model_include: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to include only certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_exclude: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to exclude certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_by_alias: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response model
            should be serialized by alias when an alias is used.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = True,
    response_model_exclude_unset: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that were not set and
            have their default values. This is different from
            `response_model_exclude_defaults` in that if the fields are set,
            they will be included in the response, even if the value is the same
            as the default.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_defaults: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that have the same value
            as the default. This is different from `response_model_exclude_unset`
            in that if the fields are set but contain the same default values,
            they will be excluded from the response.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_none: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data should
            exclude fields set to `None`.

            This is much simpler (less smart) than `response_model_exclude_unset`
            and `response_model_exclude_defaults`. You probably want to use one of
            those two instead of this one, as those allow returning `None` values
            when it makes sense.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_exclude_none).
            """
        ),
    ] = False,
    include_in_schema: Annotated[
        bool,
        Doc(
            """
            Include this *path operation* in the generated OpenAPI schema.

            This affects the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Query Parameters and String Validations](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#exclude-from-openapi).
            """
        ),
    ] = True,
    response_class: Annotated[
        Type[Response],
        Doc(
            """
            Response class to be used for this *path operation*.

            This will not be used if you return a response directly.

            Read more about it in the
            [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/#redirectresponse).
            """
        ),
    ] = Default(JSONResponse),
    name: Annotated[
        Optional[str],
        Doc(
            """
            Name for this *path operation*. Only used internally.
            """
        ),
    ] = None,
    callbacks: Annotated[
        Optional[List[BaseRoute]],
        Doc(
            """
            List of *path operations* that will be used as OpenAPI callbacks.

            This is only for OpenAPI documentation, the callbacks won't be used
            directly.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for OpenAPI Callbacks](https://fastapi.tiangolo.com/advanced/openapi-callbacks/).
            """
        ),
    ] = None,
    openapi_extra: Annotated[
        Optional[Dict[str, Any]],
        Doc(
            """
            Extra metadata to be included in the OpenAPI schema for this *path
            operation*.

            Read more about it in the
            [FastAPI docs for Path Operation Advanced Configuration](https://fastapi.tiangolo.com/advanced/path-operation-advanced-configuration/#custom-openapi-path-operation-schema).
            """
        ),
    ] = None,
    generate_unique_id_function: Annotated[
        Callable[[APIRoute], str],
        Doc(
            """
            Customize the function used to generate unique IDs for the *path
            operations* shown in the generated OpenAPI.

            This is particularly useful when automatically generating clients or
            SDKs for your API.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = Default(generate_unique_id),
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    """
    Add a *path operation* using an HTTP DELETE operation.

    ## Example

    ```python
    from fastapi import APIRouter, FastAPI

    app = FastAPI()
    router = APIRouter()

    @router.delete("/items/{item_id}")
    def delete_item(item_id: str):
        return {"message": "Item deleted"}

    app.include_router(router)
    ```
    """
    return self.api_route(
        path=path,
        response_model=response_model,
        status_code=status_code,
        tags=tags,
        dependencies=dependencies,
        summary=summary,
        description=description,
        response_description=response_description,
        responses=responses,
        deprecated=deprecated,
        methods=["DELETE"],
        operation_id=operation_id,
        response_model_include=response_model_include,
        response_model_exclude=response_model_exclude,
        response_model_by_alias=response_model_by_alias,
        response_model_exclude_unset=response_model_exclude_unset,
        response_model_exclude_defaults=response_model_exclude_defaults,
        response_model_exclude_none=response_model_exclude_none,
        include_in_schema=include_in_schema,
        response_class=response_class,
        name=name,
        callbacks=callbacks,
        openapi_extra=openapi_extra,
        generate_unique_id_function=generate_unique_id_function,
    )

options #

options(path, *, response_model=Default(None), status_code=None, tags=None, dependencies=None, summary=None, description=None, response_description='Successful Response', responses=None, deprecated=None, operation_id=None, response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False, include_in_schema=True, response_class=Default(JSONResponse), name=None, callbacks=None, openapi_extra=None, generate_unique_id_function=Default(generate_unique_id))

Add a path operation using an HTTP OPTIONS operation.

Example#
from fastapi import APIRouter, FastAPI

app = FastAPI()
router = APIRouter()

@router.options("/items/")
def get_item_options():
    return {"additions": ["Aji", "Guacamole"]}

app.include_router(router)
Source code in fastapi/routing.py
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
def options(
    self,
    path: Annotated[
        str,
        Doc(
            """
            The URL path to be used for this *path operation*.

            For example, in `http://example.com/items`, the path is `/items`.
            """
        ),
    ],
    *,
    response_model: Annotated[
        Any,
        Doc(
            """
            The type to use for the response.

            It could be any valid Pydantic *field* type. So, it doesn't have to
            be a Pydantic model, it could be other things, like a `list`, `dict`,
            etc.

            It will be used for:

            * Documentation: the generated OpenAPI (and the UI at `/docs`) will
                show it as the response (JSON Schema).
            * Serialization: you could return an arbitrary object and the
                `response_model` would be used to serialize that object into the
                corresponding JSON.
            * Filtering: the JSON sent to the client will only contain the data
                (fields) defined in the `response_model`. If you returned an object
                that contains an attribute `password` but the `response_model` does
                not include that field, the JSON sent to the client would not have
                that `password`.
            * Validation: whatever you return will be serialized with the
                `response_model`, converting any data as necessary to generate the
                corresponding JSON. But if the data in the object returned is not
                valid, that would mean a violation of the contract with the client,
                so it's an error from the API developer. So, FastAPI will raise an
                error and return a 500 error code (Internal Server Error).

            Read more about it in the
            [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).
            """
        ),
    ] = Default(None),
    status_code: Annotated[
        Optional[int],
        Doc(
            """
            The default status code to be used for the response.

            You could override the status code by returning a response directly.

            Read more about it in the
            [FastAPI docs for Response Status Code](https://fastapi.tiangolo.com/tutorial/response-status-code/).
            """
        ),
    ] = None,
    tags: Annotated[
        Optional[List[Union[str, Enum]]],
        Doc(
            """
            A list of tags to be applied to the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/#tags).
            """
        ),
    ] = None,
    dependencies: Annotated[
        Optional[Sequence[params.Depends]],
        Doc(
            """
            A list of dependencies (using `Depends()`) to be applied to the
            *path operation*.

            Read more about it in the
            [FastAPI docs for Dependencies in path operation decorators](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-in-path-operation-decorators/).
            """
        ),
    ] = None,
    summary: Annotated[
        Optional[str],
        Doc(
            """
            A summary for the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    description: Annotated[
        Optional[str],
        Doc(
            """
            A description for the *path operation*.

            If not provided, it will be extracted automatically from the docstring
            of the *path operation function*.

            It can contain Markdown.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    response_description: Annotated[
        str,
        Doc(
            """
            The description for the default response.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = "Successful Response",
    responses: Annotated[
        Optional[Dict[Union[int, str], Dict[str, Any]]],
        Doc(
            """
            Additional responses that could be returned by this *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    deprecated: Annotated[
        Optional[bool],
        Doc(
            """
            Mark this *path operation* as deprecated.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    operation_id: Annotated[
        Optional[str],
        Doc(
            """
            Custom operation ID to be used by this *path operation*.

            By default, it is generated automatically.

            If you provide a custom operation ID, you need to make sure it is
            unique for the whole API.

            You can customize the
            operation ID generation with the parameter
            `generate_unique_id_function` in the `FastAPI` class.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = None,
    response_model_include: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to include only certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_exclude: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to exclude certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_by_alias: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response model
            should be serialized by alias when an alias is used.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = True,
    response_model_exclude_unset: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that were not set and
            have their default values. This is different from
            `response_model_exclude_defaults` in that if the fields are set,
            they will be included in the response, even if the value is the same
            as the default.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_defaults: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that have the same value
            as the default. This is different from `response_model_exclude_unset`
            in that if the fields are set but contain the same default values,
            they will be excluded from the response.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_none: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data should
            exclude fields set to `None`.

            This is much simpler (less smart) than `response_model_exclude_unset`
            and `response_model_exclude_defaults`. You probably want to use one of
            those two instead of this one, as those allow returning `None` values
            when it makes sense.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_exclude_none).
            """
        ),
    ] = False,
    include_in_schema: Annotated[
        bool,
        Doc(
            """
            Include this *path operation* in the generated OpenAPI schema.

            This affects the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Query Parameters and String Validations](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#exclude-from-openapi).
            """
        ),
    ] = True,
    response_class: Annotated[
        Type[Response],
        Doc(
            """
            Response class to be used for this *path operation*.

            This will not be used if you return a response directly.

            Read more about it in the
            [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/#redirectresponse).
            """
        ),
    ] = Default(JSONResponse),
    name: Annotated[
        Optional[str],
        Doc(
            """
            Name for this *path operation*. Only used internally.
            """
        ),
    ] = None,
    callbacks: Annotated[
        Optional[List[BaseRoute]],
        Doc(
            """
            List of *path operations* that will be used as OpenAPI callbacks.

            This is only for OpenAPI documentation, the callbacks won't be used
            directly.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for OpenAPI Callbacks](https://fastapi.tiangolo.com/advanced/openapi-callbacks/).
            """
        ),
    ] = None,
    openapi_extra: Annotated[
        Optional[Dict[str, Any]],
        Doc(
            """
            Extra metadata to be included in the OpenAPI schema for this *path
            operation*.

            Read more about it in the
            [FastAPI docs for Path Operation Advanced Configuration](https://fastapi.tiangolo.com/advanced/path-operation-advanced-configuration/#custom-openapi-path-operation-schema).
            """
        ),
    ] = None,
    generate_unique_id_function: Annotated[
        Callable[[APIRoute], str],
        Doc(
            """
            Customize the function used to generate unique IDs for the *path
            operations* shown in the generated OpenAPI.

            This is particularly useful when automatically generating clients or
            SDKs for your API.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = Default(generate_unique_id),
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    """
    Add a *path operation* using an HTTP OPTIONS operation.

    ## Example

    ```python
    from fastapi import APIRouter, FastAPI

    app = FastAPI()
    router = APIRouter()

    @router.options("/items/")
    def get_item_options():
        return {"additions": ["Aji", "Guacamole"]}

    app.include_router(router)
    ```
    """
    return self.api_route(
        path=path,
        response_model=response_model,
        status_code=status_code,
        tags=tags,
        dependencies=dependencies,
        summary=summary,
        description=description,
        response_description=response_description,
        responses=responses,
        deprecated=deprecated,
        methods=["OPTIONS"],
        operation_id=operation_id,
        response_model_include=response_model_include,
        response_model_exclude=response_model_exclude,
        response_model_by_alias=response_model_by_alias,
        response_model_exclude_unset=response_model_exclude_unset,
        response_model_exclude_defaults=response_model_exclude_defaults,
        response_model_exclude_none=response_model_exclude_none,
        include_in_schema=include_in_schema,
        response_class=response_class,
        name=name,
        callbacks=callbacks,
        openapi_extra=openapi_extra,
        generate_unique_id_function=generate_unique_id_function,
    )

head #

head(path, *, response_model=Default(None), status_code=None, tags=None, dependencies=None, summary=None, description=None, response_description='Successful Response', responses=None, deprecated=None, operation_id=None, response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False, include_in_schema=True, response_class=Default(JSONResponse), name=None, callbacks=None, openapi_extra=None, generate_unique_id_function=Default(generate_unique_id))

Add a path operation using an HTTP HEAD operation.

Example#
from fastapi import APIRouter, FastAPI
from pydantic import BaseModel

class Item(BaseModel):
    name: str
    description: str | None = None

app = FastAPI()
router = APIRouter()

@router.head("/items/", status_code=204)
def get_items_headers(response: Response):
    response.headers["X-Cat-Dog"] = "Alone in the world"

app.include_router(router)
Source code in fastapi/routing.py
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
def head(
    self,
    path: Annotated[
        str,
        Doc(
            """
            The URL path to be used for this *path operation*.

            For example, in `http://example.com/items`, the path is `/items`.
            """
        ),
    ],
    *,
    response_model: Annotated[
        Any,
        Doc(
            """
            The type to use for the response.

            It could be any valid Pydantic *field* type. So, it doesn't have to
            be a Pydantic model, it could be other things, like a `list`, `dict`,
            etc.

            It will be used for:

            * Documentation: the generated OpenAPI (and the UI at `/docs`) will
                show it as the response (JSON Schema).
            * Serialization: you could return an arbitrary object and the
                `response_model` would be used to serialize that object into the
                corresponding JSON.
            * Filtering: the JSON sent to the client will only contain the data
                (fields) defined in the `response_model`. If you returned an object
                that contains an attribute `password` but the `response_model` does
                not include that field, the JSON sent to the client would not have
                that `password`.
            * Validation: whatever you return will be serialized with the
                `response_model`, converting any data as necessary to generate the
                corresponding JSON. But if the data in the object returned is not
                valid, that would mean a violation of the contract with the client,
                so it's an error from the API developer. So, FastAPI will raise an
                error and return a 500 error code (Internal Server Error).

            Read more about it in the
            [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).
            """
        ),
    ] = Default(None),
    status_code: Annotated[
        Optional[int],
        Doc(
            """
            The default status code to be used for the response.

            You could override the status code by returning a response directly.

            Read more about it in the
            [FastAPI docs for Response Status Code](https://fastapi.tiangolo.com/tutorial/response-status-code/).
            """
        ),
    ] = None,
    tags: Annotated[
        Optional[List[Union[str, Enum]]],
        Doc(
            """
            A list of tags to be applied to the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/#tags).
            """
        ),
    ] = None,
    dependencies: Annotated[
        Optional[Sequence[params.Depends]],
        Doc(
            """
            A list of dependencies (using `Depends()`) to be applied to the
            *path operation*.

            Read more about it in the
            [FastAPI docs for Dependencies in path operation decorators](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-in-path-operation-decorators/).
            """
        ),
    ] = None,
    summary: Annotated[
        Optional[str],
        Doc(
            """
            A summary for the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    description: Annotated[
        Optional[str],
        Doc(
            """
            A description for the *path operation*.

            If not provided, it will be extracted automatically from the docstring
            of the *path operation function*.

            It can contain Markdown.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    response_description: Annotated[
        str,
        Doc(
            """
            The description for the default response.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = "Successful Response",
    responses: Annotated[
        Optional[Dict[Union[int, str], Dict[str, Any]]],
        Doc(
            """
            Additional responses that could be returned by this *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    deprecated: Annotated[
        Optional[bool],
        Doc(
            """
            Mark this *path operation* as deprecated.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    operation_id: Annotated[
        Optional[str],
        Doc(
            """
            Custom operation ID to be used by this *path operation*.

            By default, it is generated automatically.

            If you provide a custom operation ID, you need to make sure it is
            unique for the whole API.

            You can customize the
            operation ID generation with the parameter
            `generate_unique_id_function` in the `FastAPI` class.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = None,
    response_model_include: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to include only certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_exclude: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to exclude certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_by_alias: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response model
            should be serialized by alias when an alias is used.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = True,
    response_model_exclude_unset: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that were not set and
            have their default values. This is different from
            `response_model_exclude_defaults` in that if the fields are set,
            they will be included in the response, even if the value is the same
            as the default.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_defaults: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that have the same value
            as the default. This is different from `response_model_exclude_unset`
            in that if the fields are set but contain the same default values,
            they will be excluded from the response.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_none: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data should
            exclude fields set to `None`.

            This is much simpler (less smart) than `response_model_exclude_unset`
            and `response_model_exclude_defaults`. You probably want to use one of
            those two instead of this one, as those allow returning `None` values
            when it makes sense.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_exclude_none).
            """
        ),
    ] = False,
    include_in_schema: Annotated[
        bool,
        Doc(
            """
            Include this *path operation* in the generated OpenAPI schema.

            This affects the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Query Parameters and String Validations](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#exclude-from-openapi).
            """
        ),
    ] = True,
    response_class: Annotated[
        Type[Response],
        Doc(
            """
            Response class to be used for this *path operation*.

            This will not be used if you return a response directly.

            Read more about it in the
            [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/#redirectresponse).
            """
        ),
    ] = Default(JSONResponse),
    name: Annotated[
        Optional[str],
        Doc(
            """
            Name for this *path operation*. Only used internally.
            """
        ),
    ] = None,
    callbacks: Annotated[
        Optional[List[BaseRoute]],
        Doc(
            """
            List of *path operations* that will be used as OpenAPI callbacks.

            This is only for OpenAPI documentation, the callbacks won't be used
            directly.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for OpenAPI Callbacks](https://fastapi.tiangolo.com/advanced/openapi-callbacks/).
            """
        ),
    ] = None,
    openapi_extra: Annotated[
        Optional[Dict[str, Any]],
        Doc(
            """
            Extra metadata to be included in the OpenAPI schema for this *path
            operation*.

            Read more about it in the
            [FastAPI docs for Path Operation Advanced Configuration](https://fastapi.tiangolo.com/advanced/path-operation-advanced-configuration/#custom-openapi-path-operation-schema).
            """
        ),
    ] = None,
    generate_unique_id_function: Annotated[
        Callable[[APIRoute], str],
        Doc(
            """
            Customize the function used to generate unique IDs for the *path
            operations* shown in the generated OpenAPI.

            This is particularly useful when automatically generating clients or
            SDKs for your API.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = Default(generate_unique_id),
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    """
    Add a *path operation* using an HTTP HEAD operation.

    ## Example

    ```python
    from fastapi import APIRouter, FastAPI
    from pydantic import BaseModel

    class Item(BaseModel):
        name: str
        description: str | None = None

    app = FastAPI()
    router = APIRouter()

    @router.head("/items/", status_code=204)
    def get_items_headers(response: Response):
        response.headers["X-Cat-Dog"] = "Alone in the world"

    app.include_router(router)
    ```
    """
    return self.api_route(
        path=path,
        response_model=response_model,
        status_code=status_code,
        tags=tags,
        dependencies=dependencies,
        summary=summary,
        description=description,
        response_description=response_description,
        responses=responses,
        deprecated=deprecated,
        methods=["HEAD"],
        operation_id=operation_id,
        response_model_include=response_model_include,
        response_model_exclude=response_model_exclude,
        response_model_by_alias=response_model_by_alias,
        response_model_exclude_unset=response_model_exclude_unset,
        response_model_exclude_defaults=response_model_exclude_defaults,
        response_model_exclude_none=response_model_exclude_none,
        include_in_schema=include_in_schema,
        response_class=response_class,
        name=name,
        callbacks=callbacks,
        openapi_extra=openapi_extra,
        generate_unique_id_function=generate_unique_id_function,
    )

patch #

patch(path, *, response_model=Default(None), status_code=None, tags=None, dependencies=None, summary=None, description=None, response_description='Successful Response', responses=None, deprecated=None, operation_id=None, response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False, include_in_schema=True, response_class=Default(JSONResponse), name=None, callbacks=None, openapi_extra=None, generate_unique_id_function=Default(generate_unique_id))

Add a path operation using an HTTP PATCH operation.

Example#
from fastapi import APIRouter, FastAPI
from pydantic import BaseModel

class Item(BaseModel):
    name: str
    description: str | None = None

app = FastAPI()
router = APIRouter()

@router.patch("/items/")
def update_item(item: Item):
    return {"message": "Item updated in place"}

app.include_router(router)
Source code in fastapi/routing.py
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
def patch(
    self,
    path: Annotated[
        str,
        Doc(
            """
            The URL path to be used for this *path operation*.

            For example, in `http://example.com/items`, the path is `/items`.
            """
        ),
    ],
    *,
    response_model: Annotated[
        Any,
        Doc(
            """
            The type to use for the response.

            It could be any valid Pydantic *field* type. So, it doesn't have to
            be a Pydantic model, it could be other things, like a `list`, `dict`,
            etc.

            It will be used for:

            * Documentation: the generated OpenAPI (and the UI at `/docs`) will
                show it as the response (JSON Schema).
            * Serialization: you could return an arbitrary object and the
                `response_model` would be used to serialize that object into the
                corresponding JSON.
            * Filtering: the JSON sent to the client will only contain the data
                (fields) defined in the `response_model`. If you returned an object
                that contains an attribute `password` but the `response_model` does
                not include that field, the JSON sent to the client would not have
                that `password`.
            * Validation: whatever you return will be serialized with the
                `response_model`, converting any data as necessary to generate the
                corresponding JSON. But if the data in the object returned is not
                valid, that would mean a violation of the contract with the client,
                so it's an error from the API developer. So, FastAPI will raise an
                error and return a 500 error code (Internal Server Error).

            Read more about it in the
            [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).
            """
        ),
    ] = Default(None),
    status_code: Annotated[
        Optional[int],
        Doc(
            """
            The default status code to be used for the response.

            You could override the status code by returning a response directly.

            Read more about it in the
            [FastAPI docs for Response Status Code](https://fastapi.tiangolo.com/tutorial/response-status-code/).
            """
        ),
    ] = None,
    tags: Annotated[
        Optional[List[Union[str, Enum]]],
        Doc(
            """
            A list of tags to be applied to the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/#tags).
            """
        ),
    ] = None,
    dependencies: Annotated[
        Optional[Sequence[params.Depends]],
        Doc(
            """
            A list of dependencies (using `Depends()`) to be applied to the
            *path operation*.

            Read more about it in the
            [FastAPI docs for Dependencies in path operation decorators](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-in-path-operation-decorators/).
            """
        ),
    ] = None,
    summary: Annotated[
        Optional[str],
        Doc(
            """
            A summary for the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    description: Annotated[
        Optional[str],
        Doc(
            """
            A description for the *path operation*.

            If not provided, it will be extracted automatically from the docstring
            of the *path operation function*.

            It can contain Markdown.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    response_description: Annotated[
        str,
        Doc(
            """
            The description for the default response.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = "Successful Response",
    responses: Annotated[
        Optional[Dict[Union[int, str], Dict[str, Any]]],
        Doc(
            """
            Additional responses that could be returned by this *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    deprecated: Annotated[
        Optional[bool],
        Doc(
            """
            Mark this *path operation* as deprecated.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    operation_id: Annotated[
        Optional[str],
        Doc(
            """
            Custom operation ID to be used by this *path operation*.

            By default, it is generated automatically.

            If you provide a custom operation ID, you need to make sure it is
            unique for the whole API.

            You can customize the
            operation ID generation with the parameter
            `generate_unique_id_function` in the `FastAPI` class.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = None,
    response_model_include: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to include only certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_exclude: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to exclude certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_by_alias: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response model
            should be serialized by alias when an alias is used.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = True,
    response_model_exclude_unset: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that were not set and
            have their default values. This is different from
            `response_model_exclude_defaults` in that if the fields are set,
            they will be included in the response, even if the value is the same
            as the default.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_defaults: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that have the same value
            as the default. This is different from `response_model_exclude_unset`
            in that if the fields are set but contain the same default values,
            they will be excluded from the response.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_none: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data should
            exclude fields set to `None`.

            This is much simpler (less smart) than `response_model_exclude_unset`
            and `response_model_exclude_defaults`. You probably want to use one of
            those two instead of this one, as those allow returning `None` values
            when it makes sense.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_exclude_none).
            """
        ),
    ] = False,
    include_in_schema: Annotated[
        bool,
        Doc(
            """
            Include this *path operation* in the generated OpenAPI schema.

            This affects the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Query Parameters and String Validations](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#exclude-from-openapi).
            """
        ),
    ] = True,
    response_class: Annotated[
        Type[Response],
        Doc(
            """
            Response class to be used for this *path operation*.

            This will not be used if you return a response directly.

            Read more about it in the
            [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/#redirectresponse).
            """
        ),
    ] = Default(JSONResponse),
    name: Annotated[
        Optional[str],
        Doc(
            """
            Name for this *path operation*. Only used internally.
            """
        ),
    ] = None,
    callbacks: Annotated[
        Optional[List[BaseRoute]],
        Doc(
            """
            List of *path operations* that will be used as OpenAPI callbacks.

            This is only for OpenAPI documentation, the callbacks won't be used
            directly.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for OpenAPI Callbacks](https://fastapi.tiangolo.com/advanced/openapi-callbacks/).
            """
        ),
    ] = None,
    openapi_extra: Annotated[
        Optional[Dict[str, Any]],
        Doc(
            """
            Extra metadata to be included in the OpenAPI schema for this *path
            operation*.

            Read more about it in the
            [FastAPI docs for Path Operation Advanced Configuration](https://fastapi.tiangolo.com/advanced/path-operation-advanced-configuration/#custom-openapi-path-operation-schema).
            """
        ),
    ] = None,
    generate_unique_id_function: Annotated[
        Callable[[APIRoute], str],
        Doc(
            """
            Customize the function used to generate unique IDs for the *path
            operations* shown in the generated OpenAPI.

            This is particularly useful when automatically generating clients or
            SDKs for your API.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = Default(generate_unique_id),
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    """
    Add a *path operation* using an HTTP PATCH operation.

    ## Example

    ```python
    from fastapi import APIRouter, FastAPI
    from pydantic import BaseModel

    class Item(BaseModel):
        name: str
        description: str | None = None

    app = FastAPI()
    router = APIRouter()

    @router.patch("/items/")
    def update_item(item: Item):
        return {"message": "Item updated in place"}

    app.include_router(router)
    ```
    """
    return self.api_route(
        path=path,
        response_model=response_model,
        status_code=status_code,
        tags=tags,
        dependencies=dependencies,
        summary=summary,
        description=description,
        response_description=response_description,
        responses=responses,
        deprecated=deprecated,
        methods=["PATCH"],
        operation_id=operation_id,
        response_model_include=response_model_include,
        response_model_exclude=response_model_exclude,
        response_model_by_alias=response_model_by_alias,
        response_model_exclude_unset=response_model_exclude_unset,
        response_model_exclude_defaults=response_model_exclude_defaults,
        response_model_exclude_none=response_model_exclude_none,
        include_in_schema=include_in_schema,
        response_class=response_class,
        name=name,
        callbacks=callbacks,
        openapi_extra=openapi_extra,
        generate_unique_id_function=generate_unique_id_function,
    )

trace #

trace(path, *, response_model=Default(None), status_code=None, tags=None, dependencies=None, summary=None, description=None, response_description='Successful Response', responses=None, deprecated=None, operation_id=None, response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False, include_in_schema=True, response_class=Default(JSONResponse), name=None, callbacks=None, openapi_extra=None, generate_unique_id_function=Default(generate_unique_id))

Add a path operation using an HTTP TRACE operation.

Example#
from fastapi import APIRouter, FastAPI
from pydantic import BaseModel

class Item(BaseModel):
    name: str
    description: str | None = None

app = FastAPI()
router = APIRouter()

@router.trace("/items/{item_id}")
def trace_item(item_id: str):
    return None

app.include_router(router)
Source code in fastapi/routing.py
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
def trace(
    self,
    path: Annotated[
        str,
        Doc(
            """
            The URL path to be used for this *path operation*.

            For example, in `http://example.com/items`, the path is `/items`.
            """
        ),
    ],
    *,
    response_model: Annotated[
        Any,
        Doc(
            """
            The type to use for the response.

            It could be any valid Pydantic *field* type. So, it doesn't have to
            be a Pydantic model, it could be other things, like a `list`, `dict`,
            etc.

            It will be used for:

            * Documentation: the generated OpenAPI (and the UI at `/docs`) will
                show it as the response (JSON Schema).
            * Serialization: you could return an arbitrary object and the
                `response_model` would be used to serialize that object into the
                corresponding JSON.
            * Filtering: the JSON sent to the client will only contain the data
                (fields) defined in the `response_model`. If you returned an object
                that contains an attribute `password` but the `response_model` does
                not include that field, the JSON sent to the client would not have
                that `password`.
            * Validation: whatever you return will be serialized with the
                `response_model`, converting any data as necessary to generate the
                corresponding JSON. But if the data in the object returned is not
                valid, that would mean a violation of the contract with the client,
                so it's an error from the API developer. So, FastAPI will raise an
                error and return a 500 error code (Internal Server Error).

            Read more about it in the
            [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).
            """
        ),
    ] = Default(None),
    status_code: Annotated[
        Optional[int],
        Doc(
            """
            The default status code to be used for the response.

            You could override the status code by returning a response directly.

            Read more about it in the
            [FastAPI docs for Response Status Code](https://fastapi.tiangolo.com/tutorial/response-status-code/).
            """
        ),
    ] = None,
    tags: Annotated[
        Optional[List[Union[str, Enum]]],
        Doc(
            """
            A list of tags to be applied to the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/#tags).
            """
        ),
    ] = None,
    dependencies: Annotated[
        Optional[Sequence[params.Depends]],
        Doc(
            """
            A list of dependencies (using `Depends()`) to be applied to the
            *path operation*.

            Read more about it in the
            [FastAPI docs for Dependencies in path operation decorators](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-in-path-operation-decorators/).
            """
        ),
    ] = None,
    summary: Annotated[
        Optional[str],
        Doc(
            """
            A summary for the *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    description: Annotated[
        Optional[str],
        Doc(
            """
            A description for the *path operation*.

            If not provided, it will be extracted automatically from the docstring
            of the *path operation function*.

            It can contain Markdown.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Path Operation Configuration](https://fastapi.tiangolo.com/tutorial/path-operation-configuration/).
            """
        ),
    ] = None,
    response_description: Annotated[
        str,
        Doc(
            """
            The description for the default response.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = "Successful Response",
    responses: Annotated[
        Optional[Dict[Union[int, str], Dict[str, Any]]],
        Doc(
            """
            Additional responses that could be returned by this *path operation*.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    deprecated: Annotated[
        Optional[bool],
        Doc(
            """
            Mark this *path operation* as deprecated.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    operation_id: Annotated[
        Optional[str],
        Doc(
            """
            Custom operation ID to be used by this *path operation*.

            By default, it is generated automatically.

            If you provide a custom operation ID, you need to make sure it is
            unique for the whole API.

            You can customize the
            operation ID generation with the parameter
            `generate_unique_id_function` in the `FastAPI` class.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = None,
    response_model_include: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to include only certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_exclude: Annotated[
        Optional[IncEx],
        Doc(
            """
            Configuration passed to Pydantic to exclude certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_by_alias: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response model
            should be serialized by alias when an alias is used.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = True,
    response_model_exclude_unset: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that were not set and
            have their default values. This is different from
            `response_model_exclude_defaults` in that if the fields are set,
            they will be included in the response, even if the value is the same
            as the default.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_defaults: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that have the same value
            as the default. This is different from `response_model_exclude_unset`
            in that if the fields are set but contain the same default values,
            they will be excluded from the response.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_none: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data should
            exclude fields set to `None`.

            This is much simpler (less smart) than `response_model_exclude_unset`
            and `response_model_exclude_defaults`. You probably want to use one of
            those two instead of this one, as those allow returning `None` values
            when it makes sense.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_exclude_none).
            """
        ),
    ] = False,
    include_in_schema: Annotated[
        bool,
        Doc(
            """
            Include this *path operation* in the generated OpenAPI schema.

            This affects the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for Query Parameters and String Validations](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#exclude-from-openapi).
            """
        ),
    ] = True,
    response_class: Annotated[
        Type[Response],
        Doc(
            """
            Response class to be used for this *path operation*.

            This will not be used if you return a response directly.

            Read more about it in the
            [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/#redirectresponse).
            """
        ),
    ] = Default(JSONResponse),
    name: Annotated[
        Optional[str],
        Doc(
            """
            Name for this *path operation*. Only used internally.
            """
        ),
    ] = None,
    callbacks: Annotated[
        Optional[List[BaseRoute]],
        Doc(
            """
            List of *path operations* that will be used as OpenAPI callbacks.

            This is only for OpenAPI documentation, the callbacks won't be used
            directly.

            It will be added to the generated OpenAPI (e.g. visible at `/docs`).

            Read more about it in the
            [FastAPI docs for OpenAPI Callbacks](https://fastapi.tiangolo.com/advanced/openapi-callbacks/).
            """
        ),
    ] = None,
    openapi_extra: Annotated[
        Optional[Dict[str, Any]],
        Doc(
            """
            Extra metadata to be included in the OpenAPI schema for this *path
            operation*.

            Read more about it in the
            [FastAPI docs for Path Operation Advanced Configuration](https://fastapi.tiangolo.com/advanced/path-operation-advanced-configuration/#custom-openapi-path-operation-schema).
            """
        ),
    ] = None,
    generate_unique_id_function: Annotated[
        Callable[[APIRoute], str],
        Doc(
            """
            Customize the function used to generate unique IDs for the *path
            operations* shown in the generated OpenAPI.

            This is particularly useful when automatically generating clients or
            SDKs for your API.

            Read more about it in the
            [FastAPI docs about how to Generate Clients](https://fastapi.tiangolo.com/advanced/generate-clients/#custom-generate-unique-id-function).
            """
        ),
    ] = Default(generate_unique_id),
) -> Callable[[DecoratedCallable], DecoratedCallable]:
    """
    Add a *path operation* using an HTTP TRACE operation.

    ## Example

    ```python
    from fastapi import APIRouter, FastAPI
    from pydantic import BaseModel

    class Item(BaseModel):
        name: str
        description: str | None = None

    app = FastAPI()
    router = APIRouter()

    @router.trace("/items/{item_id}")
    def trace_item(item_id: str):
        return None

    app.include_router(router)
    ```
    """
    return self.api_route(
        path=path,
        response_model=response_model,
        status_code=status_code,
        tags=tags,
        dependencies=dependencies,
        summary=summary,
        description=description,
        response_description=response_description,
        responses=responses,
        deprecated=deprecated,
        methods=["TRACE"],
        operation_id=operation_id,
        response_model_include=response_model_include,
        response_model_exclude=response_model_exclude,
        response_model_by_alias=response_model_by_alias,
        response_model_exclude_unset=response_model_exclude_unset,
        response_model_exclude_defaults=response_model_exclude_defaults,
        response_model_exclude_none=response_model_exclude_none,
        include_in_schema=include_in_schema,
        response_class=response_class,
        name=name,
        callbacks=callbacks,
        openapi_extra=openapi_extra,
        generate_unique_id_function=generate_unique_id_function,
    )

after_startup #

after_startup(func: Callable[[AppType], Mapping[str, Any]]) -> Callable[[AppType], Mapping[str, Any]]
after_startup(func: Callable[[AppType], Awaitable[Mapping[str, Any]]]) -> Callable[[AppType], Awaitable[Mapping[str, Any]]]
after_startup(func: Callable[[AppType], None]) -> Callable[[AppType], None]
after_startup(func: Callable[[AppType], Awaitable[None]]) -> Callable[[AppType], Awaitable[None]]
after_startup(func)

Register a function to be executed after startup.

Source code in faststream/broker/fastapi/router.py
def after_startup(
    self,
    func: Union[
        Callable[["AppType"], Mapping[str, Any]],
        Callable[["AppType"], Awaitable[Mapping[str, Any]]],
        Callable[["AppType"], None],
        Callable[["AppType"], Awaitable[None]],
    ],
) -> Union[
    Callable[["AppType"], Mapping[str, Any]],
    Callable[["AppType"], Awaitable[Mapping[str, Any]]],
    Callable[["AppType"], None],
    Callable[["AppType"], Awaitable[None]],
]:
    """Register a function to be executed after startup."""
    self._after_startup_hooks.append(to_async(func))
    return func

on_broker_shutdown #

on_broker_shutdown(func: Callable[[AppType], None]) -> Callable[[AppType], None]
on_broker_shutdown(func: Callable[[AppType], Awaitable[None]]) -> Callable[[AppType], Awaitable[None]]
on_broker_shutdown(func)

Register a function to be executed before broker stop.

Source code in faststream/broker/fastapi/router.py
def on_broker_shutdown(
    self,
    func: Union[
        Callable[["AppType"], None],
        Callable[["AppType"], Awaitable[None]],
    ],
) -> Union[
    Callable[["AppType"], None],
    Callable[["AppType"], Awaitable[None]],
]:
    """Register a function to be executed before broker stop."""
    self._on_shutdown_hooks.append(to_async(func))
    return func

subscriber #

subscriber(*topics: str, partitions: Sequence[TopicPartition] = (), polling_interval: float = 0.1, group_id: Optional[str] = None, group_instance_id: Optional[str] = None, fetch_max_wait_ms: int = 500, fetch_max_bytes: int = 50 * 1024 * 1024, fetch_min_bytes: int = 1, max_partition_fetch_bytes: int = 1 * 1024 * 1024, auto_offset_reset: Literal['latest', 'earliest', 'none'] = 'latest', auto_commit: bool = True, auto_commit_interval_ms: int = 5 * 1000, check_crcs: bool = True, partition_assignment_strategy: Sequence[str] = ('roundrobin'), max_poll_interval_ms: int = 5 * 60 * 1000, session_timeout_ms: int = 10 * 1000, heartbeat_interval_ms: int = 3 * 1000, isolation_level: Literal['read_uncommitted', 'read_committed'] = 'read_uncommitted', batch: Literal[False] = False, max_records: Optional[int] = None, dependencies: Iterable[Depends] = (), parser: Optional[CustomCallable] = None, decoder: Optional[CustomCallable] = None, middlewares: Sequence[SubscriberMiddleware[KafkaMessage]] = (), filter: Filter[KafkaMessage] = default_filter, retry: bool = False, no_ack: bool = False, no_reply: bool = False, title: Optional[str] = None, description: Optional[str] = None, include_in_schema: bool = True, response_model: Any = Default(None), response_model_include: Optional[IncEx] = None, response_model_exclude: Optional[IncEx] = None, response_model_by_alias: bool = True, response_model_exclude_unset: bool = False, response_model_exclude_defaults: bool = False, response_model_exclude_none: bool = False) -> AsyncAPIDefaultSubscriber
subscriber(*topics: str, partitions: Sequence[TopicPartition] = (), polling_interval: float = 0.1, group_id: Optional[str] = None, group_instance_id: Optional[str] = None, fetch_max_wait_ms: int = 500, fetch_max_bytes: int = 50 * 1024 * 1024, fetch_min_bytes: int = 1, max_partition_fetch_bytes: int = 1 * 1024 * 1024, auto_offset_reset: Literal['latest', 'earliest', 'none'] = 'latest', auto_commit: bool = True, auto_commit_interval_ms: int = 5 * 1000, check_crcs: bool = True, partition_assignment_strategy: Sequence[str] = ('roundrobin'), max_poll_interval_ms: int = 5 * 60 * 1000, session_timeout_ms: int = 10 * 1000, heartbeat_interval_ms: int = 3 * 1000, isolation_level: Literal['read_uncommitted', 'read_committed'] = 'read_uncommitted', batch: Literal[True], max_records: Optional[int] = None, dependencies: Iterable[Depends] = (), parser: Optional[CustomCallable] = None, decoder: Optional[CustomCallable] = None, middlewares: Sequence[SubscriberMiddleware[KafkaMessage]] = (), filter: Filter[KafkaMessage] = default_filter, title: Optional[str] = None, description: Optional[str] = None, include_in_schema: bool = True, response_model: Any = Default(None), response_model_include: Optional[IncEx] = None, response_model_exclude: Optional[IncEx] = None, response_model_by_alias: bool = True, response_model_exclude_unset: bool = False, response_model_exclude_defaults: bool = False, response_model_exclude_none: bool = False) -> AsyncAPIBatchSubscriber
subscriber(*topics: str, partitions: Sequence[TopicPartition] = (), polling_interval: float = 0.1, group_id: Optional[str] = None, group_instance_id: Optional[str] = None, fetch_max_wait_ms: int = 500, fetch_max_bytes: int = 50 * 1024 * 1024, fetch_min_bytes: int = 1, max_partition_fetch_bytes: int = 1 * 1024 * 1024, auto_offset_reset: Literal['latest', 'earliest', 'none'] = 'latest', auto_commit: bool = True, auto_commit_interval_ms: int = 5 * 1000, check_crcs: bool = True, partition_assignment_strategy: Sequence[str] = ('roundrobin'), max_poll_interval_ms: int = 5 * 60 * 1000, session_timeout_ms: int = 10 * 1000, heartbeat_interval_ms: int = 3 * 1000, isolation_level: Literal['read_uncommitted', 'read_committed'] = 'read_uncommitted', batch: bool = False, max_records: Optional[int] = None, dependencies: Iterable[Depends] = (), parser: Optional[CustomCallable] = None, decoder: Optional[CustomCallable] = None, middlewares: Sequence[SubscriberMiddleware[KafkaMessage]] = (), filter: Filter[KafkaMessage] = default_filter, retry: bool = False, no_ack: bool = False, no_reply: bool = False, title: Optional[str] = None, description: Optional[str] = None, include_in_schema: bool = True, response_model: Any = Default(None), response_model_include: Optional[IncEx] = None, response_model_exclude: Optional[IncEx] = None, response_model_by_alias: bool = True, response_model_exclude_unset: bool = False, response_model_exclude_defaults: bool = False, response_model_exclude_none: bool = False) -> Union[AsyncAPIBatchSubscriber, AsyncAPIDefaultSubscriber]
subscriber(*topics, partitions=(), polling_interval=0.1, group_id=None, group_instance_id=None, fetch_max_wait_ms=500, fetch_max_bytes=50 * 1024 * 1024, fetch_min_bytes=1, max_partition_fetch_bytes=1 * 1024 * 1024, auto_offset_reset='latest', auto_commit=True, auto_commit_interval_ms=5 * 1000, check_crcs=True, partition_assignment_strategy=('roundrobin'), max_poll_interval_ms=5 * 60 * 1000, session_timeout_ms=10 * 1000, heartbeat_interval_ms=3 * 1000, isolation_level='read_uncommitted', batch=False, max_records=None, dependencies=(), parser=None, decoder=None, middlewares=(), filter=default_filter, retry=False, no_ack=False, no_reply=False, title=None, description=None, include_in_schema=True, response_model=Default(None), response_model_include=None, response_model_exclude=None, response_model_by_alias=True, response_model_exclude_unset=False, response_model_exclude_defaults=False, response_model_exclude_none=False)
Source code in faststream/confluent/fastapi/fastapi.py
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
@override
def subscriber(
    self,
    *topics: Annotated[
        str,
        Doc("Kafka topics to consume messages from."),
    ],
    partitions: Sequence["TopicPartition"] = (),
    polling_interval: float = 0.1,
    group_id: Annotated[
        Optional[str],
        Doc(
            """
        Name of the consumer group to join for dynamic
        partition assignment (if enabled), and to use for fetching and
        committing offsets. If `None`, auto-partition assignment (via
        group coordinator) and offset commits are disabled.
        """
        ),
    ] = None,
    group_instance_id: Annotated[
        Optional[str],
        Doc(
            """
        A unique string that identifies the consumer instance.
        If set, the consumer is treated as a static member of the group
        and does not participate in consumer group management (e.g.
        partition assignment, rebalances). This can be used to assign
        partitions to specific consumers, rather than letting the group
        assign partitions based on consumer metadata.
        """
        ),
    ] = None,
    fetch_max_wait_ms: Annotated[
        int,
        Doc(
            """
        The maximum amount of time in milliseconds
        the server will block before answering the fetch request if
        there isn't sufficient data to immediately satisfy the
        requirement given by `fetch_min_bytes`.
        """
        ),
    ] = 500,
    fetch_max_bytes: Annotated[
        int,
        Doc(
            """
        The maximum amount of data the server should
        return for a fetch request. This is not an absolute maximum, if
        the first message in the first non-empty partition of the fetch
        is larger than this value, the message will still be returned
        to ensure that the consumer can make progress. NOTE: consumer
        performs fetches to multiple brokers in parallel so memory
        usage will depend on the number of brokers containing
        partitions for the topic.
        """
        ),
    ] = 50 * 1024 * 1024,
    fetch_min_bytes: Annotated[
        int,
        Doc(
            """
        Minimum amount of data the server should
        return for a fetch request, otherwise wait up to
        `fetch_max_wait_ms` for more data to accumulate.
        """
        ),
    ] = 1,
    max_partition_fetch_bytes: Annotated[
        int,
        Doc(
            """
        The maximum amount of data
        per-partition the server will return. The maximum total memory
        used for a request ``= #partitions * max_partition_fetch_bytes``.
        This size must be at least as large as the maximum message size
        the server allows or else it is possible for the producer to
        send messages larger than the consumer can fetch. If that
        happens, the consumer can get stuck trying to fetch a large
        message on a certain partition.
        """
        ),
    ] = 1 * 1024 * 1024,
    auto_offset_reset: Annotated[
        Literal["latest", "earliest", "none"],
        Doc(
            """
        A policy for resetting offsets on `OffsetOutOfRangeError` errors:

        * `earliest` will move to the oldest available message
        * `latest` will move to the most recent
        * `none` will raise an exception so you can handle this case
        """
        ),
    ] = "latest",
    auto_commit: Annotated[
        bool,
        Doc(
            """
        If `True` the consumer's offset will be
        periodically committed in the background.
        """
        ),
    ] = True,
    auto_commit_interval_ms: Annotated[
        int,
        Doc(
            """
        Milliseconds between automatic
        offset commits, if `auto_commit` is `True`."""
        ),
    ] = 5 * 1000,
    check_crcs: Annotated[
        bool,
        Doc(
            """
        Automatically check the CRC32 of the records
        consumed. This ensures no on-the-wire or on-disk corruption to
        the messages occurred. This check adds some overhead, so it may
        be disabled in cases seeking extreme performance.
        """
        ),
    ] = True,
    partition_assignment_strategy: Annotated[
        Sequence[str],
        Doc(
            """
        List of objects to use to
        distribute partition ownership amongst consumer instances when
        group management is used. This preference is implicit in the order
        of the strategies in the list. When assignment strategy changes:
        to support a change to the assignment strategy, new versions must
        enable support both for the old assignment strategy and the new
        one. The coordinator will choose the old assignment strategy until
        all members have been updated. Then it will choose the new
        strategy.
        """
        ),
    ] = ("roundrobin",),
    max_poll_interval_ms: Annotated[
        int,
        Doc(
            """
        Maximum allowed time between calls to
        consume messages in batches. If this interval
        is exceeded the consumer is considered failed and the group will
        rebalance in order to reassign the partitions to another consumer
        group member. If API methods block waiting for messages, that time
        does not count against this timeout.
        """
        ),
    ] = 5 * 60 * 1000,
    session_timeout_ms: Annotated[
        int,
        Doc(
            """
        Client group session and failure detection
        timeout. The consumer sends periodic heartbeats
        (`heartbeat.interval.ms`) to indicate its liveness to the broker.
        If no hearts are received by the broker for a group member within
        the session timeout, the broker will remove the consumer from the
        group and trigger a rebalance. The allowed range is configured with
        the **broker** configuration properties
        `group.min.session.timeout.ms` and `group.max.session.timeout.ms`.
        """
        ),
    ] = 10 * 1000,
    heartbeat_interval_ms: Annotated[
        int,
        Doc(
            """
        The expected time in milliseconds
        between heartbeats to the consumer coordinator when using
        Kafka's group management feature. Heartbeats are used to ensure
        that the consumer's session stays active and to facilitate
        rebalancing when new consumers join or leave the group. The
        value must be set lower than `session_timeout_ms`, but typically
        should be set no higher than 1/3 of that value. It can be
        adjusted even lower to control the expected time for normal
        rebalances.
        """
        ),
    ] = 3 * 1000,
    isolation_level: Annotated[
        Literal["read_uncommitted", "read_committed"],
        Doc(
            """
        Controls how to read messages written
        transactionally.

        * `read_committed`, batch consumer will only return
        transactional messages which have been committed.

        * `read_uncommitted` (the default), batch consumer will
        return all messages, even transactional messages which have been
        aborted.

        Non-transactional messages will be returned unconditionally in
        either mode.

        Messages will always be returned in offset order. Hence, in
        `read_committed` mode, batch consumer will only return
        messages up to the last stable offset (LSO), which is the one less
        than the offset of the first open transaction. In particular any
        messages appearing after messages belonging to ongoing transactions
        will be withheld until the relevant transaction has been completed.
        As a result, `read_committed` consumers will not be able to read up
        to the high watermark when there are in flight transactions.
        Further, when in `read_committed` the seek_to_end method will
        return the LSO. See method docs below.
        """
        ),
    ] = "read_uncommitted",
    batch: Annotated[
        bool,
        Doc("Whether to consume messages in batches or not."),
    ] = False,
    max_records: Annotated[
        Optional[int],
        Doc("Number of messages to consume as one batch."),
    ] = None,
    # broker args
    dependencies: Annotated[
        Iterable["params.Depends"],
        Doc("Dependencies list (`[Depends(),]`) to apply to the subscriber."),
    ] = (),
    parser: Annotated[
        Optional["CustomCallable"],
        Doc("Parser to map original **Message** object to FastStream one."),
    ] = None,
    decoder: Annotated[
        Optional["CustomCallable"],
        Doc("Function to decode FastStream msg bytes body to python objects."),
    ] = None,
    middlewares: Annotated[
        Sequence["SubscriberMiddleware[KafkaMessage]"],
        Doc("Subscriber middlewares to wrap incoming message processing."),
    ] = (),
    filter: Annotated[
        "Filter[KafkaMessage]",
        Doc(
            "Overload subscriber to consume various messages from the same source."
        ),
        deprecated(
            "Deprecated in **FastStream 0.5.0**. "
            "Please, create `subscriber` object and use it explicitly instead. "
            "Argument will be removed in **FastStream 0.6.0**."
        ),
    ] = default_filter,
    retry: Annotated[
        bool,
        Doc("Whether to `nack` message at processing exception."),
    ] = False,
    no_ack: Annotated[
        bool,
        Doc("Whether to disable **FastStream** autoacknowledgement logic or not."),
    ] = False,
    no_reply: Annotated[
        bool,
        Doc(
            "Whether to disable **FastStream** RPC and Reply To auto responses or not."
        ),
    ] = False,
    # AsyncAPI args
    title: Annotated[
        Optional[str],
        Doc("AsyncAPI subscriber object title."),
    ] = None,
    description: Annotated[
        Optional[str],
        Doc(
            "AsyncAPI subscriber object description. "
            "Uses decorated docstring as default."
        ),
    ] = None,
    include_in_schema: Annotated[
        bool,
        Doc("Whetever to include operation in AsyncAPI schema or not."),
    ] = True,
    # FastAPI args
    response_model: Annotated[
        Any,
        Doc(
            """
            The type to use for the response.

            It could be any valid Pydantic *field* type. So, it doesn't have to
            be a Pydantic model, it could be other things, like a `list`, `dict`,
            etc.

            It will be used for:

            * Documentation: the generated OpenAPI (and the UI at `/docs`) will
                show it as the response (JSON Schema).
            * Serialization: you could return an arbitrary object and the
                `response_model` would be used to serialize that object into the
                corresponding JSON.
            * Filtering: the JSON sent to the client will only contain the data
                (fields) defined in the `response_model`. If you returned an object
                that contains an attribute `password` but the `response_model` does
                not include that field, the JSON sent to the client would not have
                that `password`.
            * Validation: whatever you return will be serialized with the
                `response_model`, converting any data as necessary to generate the
                corresponding JSON. But if the data in the object returned is not
                valid, that would mean a violation of the contract with the client,
                so it's an error from the API developer. So, FastAPI will raise an
                error and return a 500 error code (Internal Server Error).

            Read more about it in the
            [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).
            """
        ),
    ] = Default(None),
    response_model_include: Annotated[
        Optional["IncEx"],
        Doc(
            """
            Configuration passed to Pydantic to include only certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_exclude: Annotated[
        Optional["IncEx"],
        Doc(
            """
            Configuration passed to Pydantic to exclude certain fields in the
            response data.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = None,
    response_model_by_alias: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response model
            should be serialized by alias when an alias is used.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
            """
        ),
    ] = True,
    response_model_exclude_unset: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that were not set and
            have their default values. This is different from
            `response_model_exclude_defaults` in that if the fields are set,
            they will be included in the response, even if the value is the same
            as the default.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_defaults: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data
            should have all the fields, including the ones that have the same value
            as the default. This is different from `response_model_exclude_unset`
            in that if the fields are set but contain the same default values,
            they will be excluded from the response.

            When `True`, default values are omitted from the response.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_exclude_unset-parameter).
            """
        ),
    ] = False,
    response_model_exclude_none: Annotated[
        bool,
        Doc(
            """
            Configuration passed to Pydantic to define if the response data should
            exclude fields set to `None`.

            This is much simpler (less smart) than `response_model_exclude_unset`
            and `response_model_exclude_defaults`. You probably want to use one of
            those two instead of this one, as those allow returning `None` values
            when it makes sense.

            Read more about it in the
            [FastAPI docs for Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_exclude_none).
            """
        ),
    ] = False,
) -> Union[
    "AsyncAPIBatchSubscriber",
    "AsyncAPIDefaultSubscriber",
]:
    subscriber = super().subscriber(
        *topics,
        polling_interval=polling_interval,
        partitions=partitions,
        group_id=group_id,
        group_instance_id=group_instance_id,
        fetch_max_wait_ms=fetch_max_wait_ms,
        fetch_max_bytes=fetch_max_bytes,
        fetch_min_bytes=fetch_min_bytes,
        max_partition_fetch_bytes=max_partition_fetch_bytes,
        auto_offset_reset=auto_offset_reset,
        auto_commit=auto_commit,
        auto_commit_interval_ms=auto_commit_interval_ms,
        check_crcs=check_crcs,
        partition_assignment_strategy=partition_assignment_strategy,
        max_poll_interval_ms=max_poll_interval_ms,
        session_timeout_ms=session_timeout_ms,
        heartbeat_interval_ms=heartbeat_interval_ms,
        isolation_level=isolation_level,
        batch=batch,
        max_records=max_records,
        # broker args
        dependencies=dependencies,
        parser=parser,
        decoder=decoder,
        middlewares=middlewares,
        filter=filter,
        retry=retry,
        no_ack=no_ack,
        no_reply=no_reply,
        title=title,
        description=description,
        include_in_schema=include_in_schema,
        # FastAPI args
        response_model=response_model,
        response_model_include=response_model_include,
        response_model_exclude=response_model_exclude,
        response_model_by_alias=response_model_by_alias,
        response_model_exclude_unset=response_model_exclude_unset,
        response_model_exclude_defaults=response_model_exclude_defaults,
        response_model_exclude_none=response_model_exclude_none,
    )

    if batch:
        return cast("AsyncAPIBatchSubscriber", subscriber)
    else:
        return cast("AsyncAPIDefaultSubscriber", subscriber)

publisher #

publisher(topic: str, *, key: Union[bytes, Any, None] = None, partition: Optional[int] = None, headers: Optional[Dict[str, str]] = None, reply_to: str = '', batch: Literal[False] = False, middlewares: Sequence[PublisherMiddleware] = (), title: Optional[str] = None, description: Optional[str] = None, schema: Optional[Any] = None, include_in_schema: bool = True) -> AsyncAPIDefaultPublisher
publisher(topic: str, *, key: Union[bytes, Any, None] = None, partition: Optional[int] = None, headers: Optional[Dict[str, str]] = None, reply_to: str = '', batch: Literal[True], middlewares: Sequence[PublisherMiddleware] = (), title: Optional[str] = None, description: Optional[str] = None, schema: Optional[Any] = None, include_in_schema: bool = True) -> AsyncAPIBatchPublisher
publisher(topic: str, *, key: Union[bytes, Any, None] = None, partition: Optional[int] = None, headers: Optional[Dict[str, str]] = None, reply_to: str = '', batch: bool = False, middlewares: Sequence[PublisherMiddleware] = (), title: Optional[str] = None, description: Optional[str] = None, schema: Optional[Any] = None, include_in_schema: bool = True) -> Union[AsyncAPIBatchPublisher, AsyncAPIDefaultPublisher]
publisher(topic, *, key=None, partition=None, headers=None, reply_to='', batch=False, middlewares=(), title=None, description=None, schema=None, include_in_schema=True)
Source code in faststream/confluent/fastapi/fastapi.py
@override
def publisher(
    self,
    topic: Annotated[
        str,
        Doc("Topic where the message will be published."),
    ],
    *,
    key: Annotated[
        Union[bytes, Any, None],
        Doc(
            """
        A key to associate with the message. Can be used to
        determine which partition to send the message to. If partition
        is `None` (and producer's partitioner config is left as default),
        then messages with the same key will be delivered to the same
        partition (but if key is `None`, partition is chosen randomly).
        Must be type `bytes`, or be serializable to bytes via configured
        `key_serializer`.
        """
        ),
    ] = None,
    partition: Annotated[
        Optional[int],
        Doc(
            """
        Specify a partition. If not set, the partition will be
        selected using the configured `partitioner`.
        """
        ),
    ] = None,
    headers: Annotated[
        Optional[Dict[str, str]],
        Doc(
            "Message headers to store metainformation. "
            "**content-type** and **correlation_id** will be set automatically by framework anyway. "
            "Can be overridden by `publish.headers` if specified."
        ),
    ] = None,
    reply_to: Annotated[
        str,
        Doc("Topic name to send response."),
    ] = "",
    batch: Annotated[
        bool,
        Doc("Whether to send messages in batches or not."),
    ] = False,
    # basic args
    middlewares: Annotated[
        Sequence["PublisherMiddleware"],
        Doc("Publisher middlewares to wrap outgoing messages."),
    ] = (),
    # AsyncAPI args
    title: Annotated[
        Optional[str],
        Doc("AsyncAPI publisher object title."),
    ] = None,
    description: Annotated[
        Optional[str],
        Doc("AsyncAPI publisher object description."),
    ] = None,
    schema: Annotated[
        Optional[Any],
        Doc(
            "AsyncAPI publishing message type. "
            "Should be any python-native object annotation or `pydantic.BaseModel`."
        ),
    ] = None,
    include_in_schema: Annotated[
        bool,
        Doc("Whetever to include operation in AsyncAPI schema or not."),
    ] = True,
) -> Union[
    "AsyncAPIBatchPublisher",
    "AsyncAPIDefaultPublisher",
]:
    return self.broker.publisher(
        topic=topic,
        key=key,
        partition=partition,
        headers=headers,
        batch=batch,
        reply_to=reply_to,
        # broker options
        middlewares=middlewares,
        # AsyncAPI options
        title=title,
        description=description,
        schema=schema,
        include_in_schema=include_in_schema,
    )