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Add route context (#2302)

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This commit is contained in:
Adam Hopkins
2021-12-21 22:56:12 +02:00
committed by GitHub
parent 080d41627a
commit 4659069350
10 changed files with 159 additions and 9 deletions
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89
sanic/mixins/routes.py
View File

@@ -26,12 +26,21 @@ from sanic.log import error_logger
from sanic.models.futures import FutureRoute, FutureStatic
from sanic.models.handler_types import RouteHandler
from sanic.response import HTTPResponse, file, file_stream
from sanic.types import HashableDict
from sanic.views import CompositionView
RouteWrapper = Callable[
[RouteHandler], Union[RouteHandler, Tuple[Route, RouteHandler]]
]
RESTRICTED_ROUTE_CONTEXT = (
"ignore_body",
"stream",
"hosts",
"static",
"error_format",
"websocket",
)
class RouteMixin:
@@ -65,10 +74,20 @@ class RouteMixin:
static: bool = False,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs: Any,
) -> RouteWrapper:
"""
Decorate a function to be registered as a route
**Example using context kwargs**
.. code-block:: python
@app.route(..., ctx_foo="foobar")
async def route_handler(request: Request):
assert request.route.ctx.foo == "foobar"
:param uri: path of the URL
:param methods: list or tuple of methods allowed
:param host: the host, if required
@@ -80,6 +99,8 @@ class RouteMixin:
body (eg. GET requests)
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: tuple of routes, decorated function
"""
@@ -94,6 +115,8 @@ class RouteMixin:
if not methods and not websocket:
methods = frozenset({"GET"})
route_context = self._build_route_context(ctx_kwargs)
def decorator(handler):
nonlocal uri
nonlocal methods
@@ -152,6 +175,7 @@ class RouteMixin:
static,
version_prefix,
error_format,
route_context,
)
self._future_routes.add(route)
@@ -196,6 +220,7 @@ class RouteMixin:
stream: bool = False,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs,
) -> RouteHandler:
"""A helper method to register class instance or
functions as a handler to the application url
@@ -212,6 +237,8 @@ class RouteMixin:
:param stream: boolean specifying if the handler is a stream handler
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: function or class instance
"""
# Handle HTTPMethodView differently
@@ -247,6 +274,7 @@ class RouteMixin:
name=name,
version_prefix=version_prefix,
error_format=error_format,
**ctx_kwargs,
)(handler)
return handler
@@ -261,6 +289,7 @@ class RouteMixin:
ignore_body: bool = True,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs,
) -> RouteWrapper:
"""
Add an API URL under the **GET** *HTTP* method
@@ -273,6 +302,8 @@ class RouteMixin:
:param name: Unique name that can be used to identify the Route
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: Object decorated with :func:`route` method
"""
return self.route(
@@ -285,6 +316,7 @@ class RouteMixin:
ignore_body=ignore_body,
version_prefix=version_prefix,
error_format=error_format,
**ctx_kwargs,
)
def post(
@@ -297,6 +329,7 @@ class RouteMixin:
name: Optional[str] = None,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs,
) -> RouteWrapper:
"""
Add an API URL under the **POST** *HTTP* method
@@ -309,6 +342,8 @@ class RouteMixin:
:param name: Unique name that can be used to identify the Route
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: Object decorated with :func:`route` method
"""
return self.route(
@@ -321,6 +356,7 @@ class RouteMixin:
name=name,
version_prefix=version_prefix,
error_format=error_format,
**ctx_kwargs,
)
def put(
@@ -333,6 +369,7 @@ class RouteMixin:
name: Optional[str] = None,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs,
) -> RouteWrapper:
"""
Add an API URL under the **PUT** *HTTP* method
@@ -345,6 +382,8 @@ class RouteMixin:
:param name: Unique name that can be used to identify the Route
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: Object decorated with :func:`route` method
"""
return self.route(
@@ -357,6 +396,7 @@ class RouteMixin:
name=name,
version_prefix=version_prefix,
error_format=error_format,
**ctx_kwargs,
)
def head(
@@ -369,6 +409,7 @@ class RouteMixin:
ignore_body: bool = True,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs,
) -> RouteWrapper:
"""
Add an API URL under the **HEAD** *HTTP* method
@@ -389,6 +430,8 @@ class RouteMixin:
:type ignore_body: bool, optional
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: Object decorated with :func:`route` method
"""
return self.route(
@@ -401,6 +444,7 @@ class RouteMixin:
ignore_body=ignore_body,
version_prefix=version_prefix,
error_format=error_format,
**ctx_kwargs,
)
def options(
@@ -413,6 +457,7 @@ class RouteMixin:
ignore_body: bool = True,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs,
) -> RouteWrapper:
"""
Add an API URL under the **OPTIONS** *HTTP* method
@@ -433,6 +478,8 @@ class RouteMixin:
:type ignore_body: bool, optional
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: Object decorated with :func:`route` method
"""
return self.route(
@@ -445,6 +492,7 @@ class RouteMixin:
ignore_body=ignore_body,
version_prefix=version_prefix,
error_format=error_format,
**ctx_kwargs,
)
def patch(
@@ -457,6 +505,7 @@ class RouteMixin:
name: Optional[str] = None,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs,
) -> RouteWrapper:
"""
Add an API URL under the **PATCH** *HTTP* method
@@ -479,6 +528,8 @@ class RouteMixin:
:type ignore_body: bool, optional
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: Object decorated with :func:`route` method
"""
return self.route(
@@ -491,6 +542,7 @@ class RouteMixin:
name=name,
version_prefix=version_prefix,
error_format=error_format,
**ctx_kwargs,
)
def delete(
@@ -503,6 +555,7 @@ class RouteMixin:
ignore_body: bool = True,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs,
) -> RouteWrapper:
"""
Add an API URL under the **DELETE** *HTTP* method
@@ -515,6 +568,8 @@ class RouteMixin:
:param name: Unique name that can be used to identify the Route
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: Object decorated with :func:`route` method
"""
return self.route(
@@ -527,6 +582,7 @@ class RouteMixin:
ignore_body=ignore_body,
version_prefix=version_prefix,
error_format=error_format,
**ctx_kwargs,
)
def websocket(
@@ -540,6 +596,7 @@ class RouteMixin:
apply: bool = True,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs,
):
"""
Decorate a function to be registered as a websocket route
@@ -553,6 +610,8 @@ class RouteMixin:
be used with :func:`url_for`
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: tuple of routes, decorated function
"""
return self.route(
@@ -567,6 +626,7 @@ class RouteMixin:
websocket=True,
version_prefix=version_prefix,
error_format=error_format,
**ctx_kwargs,
)
def add_websocket_route(
@@ -580,6 +640,7 @@ class RouteMixin:
name: Optional[str] = None,
version_prefix: str = "/v",
error_format: Optional[str] = None,
**ctx_kwargs,
):
"""
A helper method to register a function as a websocket route.
@@ -598,6 +659,8 @@ class RouteMixin:
be used with :func:`url_for`
:param version_prefix: URL path that should be before the version
value; default: ``/v``
:param ctx_kwargs: Keyword arguments that begin with a ctx_* prefix
will be appended to the route context (``route.ctx``)
:return: Objected decorated by :func:`websocket`
"""
return self.websocket(
@@ -609,6 +672,7 @@ class RouteMixin:
name=name,
version_prefix=version_prefix,
error_format=error_format,
**ctx_kwargs,
)(handler)
def static(
@@ -957,3 +1021,28 @@ class RouteMixin:
HttpResponseVisitor().visit(node)
return types
def _build_route_context(self, raw):
ctx_kwargs = {
key.replace("ctx_", ""): raw.pop(key)
for key in {**raw}.keys()
if key.startswith("ctx_")
}
restricted = [
key for key in ctx_kwargs.keys() if key in RESTRICTED_ROUTE_CONTEXT
]
if restricted:
restricted_arguments = ", ".join(restricted)
raise AttributeError(
"Cannot use restricted route context: "
f"{restricted_arguments}. This limitation is only in place "
"until v22.3 when the restricted names will no longer be in"
"conflict. See https://github.com/sanic-org/sanic/issues/2303 "
"for more information."
)
if raw:
unexpected_arguments = ", ".join(raw.keys())
raise TypeError(
f"Unexpected keyword arguments: {unexpected_arguments}"
)
return HashableDict(ctx_kwargs)

6
sanic/mixins/signals.py
View File

@@ -4,11 +4,7 @@ from typing import Any, Callable, Dict, Optional, Set, Union
from sanic.models.futures import FutureSignal
from sanic.models.handler_types import SignalHandler
from sanic.signals import Signal
class HashableDict(dict):
def __hash__(self):
return hash(tuple(sorted(self.items())))
from sanic.types import HashableDict
class SignalMixin: