Move logic into mixins

sanic/app.py

@@ -30,8 +30,10 @@ from sanic.exceptions import (
 )
 from sanic.handlers import ErrorHandler, ListenerType, MiddlewareType
 from sanic.log import LOGGING_CONFIG_DEFAULTS, error_logger, logger
+from sanic.mixins.base import BaseMixin
+from sanic.mixins.middleware import MiddlewareMixin
 from sanic.mixins.routes import RouteMixin
-from sanic.models.futures import FutureRoute
+from sanic.models.futures import FutureMiddleware, FutureRoute, FutureStatic
 from sanic.request import Request
 from sanic.response import BaseHTTPResponse, HTTPResponse
 from sanic.router import Router
@@ -47,7 +49,7 @@ from sanic.views import CompositionView
 from sanic.websocket import ConnectionClosed, WebSocketProtocol
 
 
-class Sanic(RouteMixin):
+class Sanic(BaseMixin, RouteMixin, MiddlewareMixin):
     _app_registry: Dict[str, "Sanic"] = {}
     test_mode = False
 
@@ -65,7 +67,6 @@ class Sanic(RouteMixin):
     ) -> None:
         super().__init__()
 
-        # Get name from previous stack frame
         if name is None:
             raise SanicException(
                 "Sanic instance cannot be unnamed. "
@@ -169,44 +170,8 @@ class Sanic(RouteMixin):
     def _apply_route(self, route: FutureRoute) -> Route:
         return self.router.add(**route._asdict())
 
-    def add_websocket_route(
+    def _apply_static(self, static: FutureStatic) -> Route:
-        self,
+        return static_register(self, static)
-        handler,
-        uri,
-        host=None,
-        strict_slashes=None,
-        subprotocols=None,
-        version=None,
-        name=None,
-    ):
-        """
-        A helper method to register a function as a websocket route.
-
-        :param handler: a callable function or instance of a class
-                        that can handle the websocket request
-        :param host: Host IP or FQDN details
-        :param uri: URL path that will be mapped to the websocket
-                    handler
-                    handler
-        :param strict_slashes: If the API endpoint needs to terminate
-                with a "/" or not
-        :param subprotocols: Subprotocols to be used with websocket
-                handshake
-        :param name: A unique name assigned to the URL so that it can
-                be used with :func:`url_for`
-        :return: Objected decorated by :func:`websocket`
-        """
-        if strict_slashes is None:
-            strict_slashes = self.strict_slashes
-
-        return self.websocket(
-            uri,
-            host=host,
-            strict_slashes=strict_slashes,
-            subprotocols=subprotocols,
-            version=version,
-            name=name,
-        )(handler)
 
     def enable_websocket(self, enable=True):
         """Enable or disable the support for websocket.
@@ -281,76 +246,19 @@ class Sanic(RouteMixin):
                     self.named_response_middleware[_rn].appendleft(middleware)
 
     # Decorator
-    def middleware(self, middleware_or_request):
+    def _apply_middleware(
-        """
-        Decorate and register middleware to be called before a request.
-        Can either be called as *@app.middleware* or
-        *@app.middleware('request')*
-
-        :param: middleware_or_request: Optional parameter to use for
-            identifying which type of middleware is being registered.
-        """
-        # Detect which way this was called, @middleware or @middleware('AT')
-        if callable(middleware_or_request):
-            return self.register_middleware(middleware_or_request)
-
-        else:
-            return partial(
-                self.register_middleware, attach_to=middleware_or_request
-            )
-
-    # Static Files
-    def static(
         self,
-        uri,
+        middleware: FutureMiddleware,
-        file_or_directory,
+        route_names: Optional[List[str]] = None,
-        pattern=r"/?.+",
-        use_modified_since=True,
-        use_content_range=False,
-        stream_large_files=False,
-        name="static",
-        host=None,
-        strict_slashes=None,
-        content_type=None,
     ):
-        """
+        print(f"{middleware=}")
-        Register a root to serve files from. The input can either be a
+        if route_names:
-        file or a directory. This method will enable an easy and simple way
+            return self.register_named_middleware(
-        to setup the :class:`Route` necessary to serve the static files.
+                middleware.middleware, route_names, middleware.attach_to
-
+            )
-        :param uri: URL path to be used for serving static content
+        else:
-        :param file_or_directory: Path for the Static file/directory with
+            return self.register_middleware(
-            static files
+                middleware.middleware, middleware.attach_to
-        :param pattern: Regex Pattern identifying the valid static files
-        :param use_modified_since: If true, send file modified time, and return
-            not modified if the browser's matches the server's
-        :param use_content_range: If true, process header for range requests
-            and sends the file part that is requested
-        :param stream_large_files: If true, use the
-            :func:`StreamingHTTPResponse.file_stream` handler rather
-            than the :func:`HTTPResponse.file` handler to send the file.
-            If this is an integer, this represents the threshold size to
-            switch to :func:`StreamingHTTPResponse.file_stream`
-        :param name: user defined name used for url_for
-        :param host: Host IP or FQDN for the service to use
-        :param strict_slashes: Instruct :class:`Sanic` to check if the request
-            URLs need to terminate with a */*
-        :param content_type: user defined content type for header
-        :return: routes registered on the router
-        :rtype: List[sanic.router.Route]
-        """
-        return static_register(
-            self,
-            uri,
-            file_or_directory,
-            pattern,
-            use_modified_since,
-            use_content_range,
-            stream_large_files,
-            name,
-            host,
-            strict_slashes,
-            content_type,
             )
 
     def blueprint(self, blueprint, **options):

sanic/blueprint_group.py

@@ -112,10 +112,13 @@ class BlueprintGroup(MutableSequence):
         :param kwargs: Optional Keyword arg to use with Middleware
         :return: Partial function to apply the middleware
         """
-        kwargs["bp_group"] = True
 
         def register_middleware_for_blueprints(fn):
             for blueprint in self.blueprints:
                 blueprint.middleware(fn, *args, **kwargs)
 
+        if args and callable(args[0]):
+            fn = args[0]
+            args = list(args)[1:]
+            return register_middleware_for_blueprints(fn)
         return register_middleware_for_blueprints

sanic/blueprints.py

@@ -2,6 +2,8 @@ from collections import defaultdict, namedtuple
 
 from sanic.blueprint_group import BlueprintGroup
 from sanic.constants import HTTP_METHODS
+from sanic.mixins.base import BaseMixin
+from sanic.mixins.middleware import MiddlewareMixin
 from sanic.mixins.routes import RouteMixin
 from sanic.models.futures import (
     FutureException,
@@ -13,7 +15,7 @@ from sanic.models.futures import (
 from sanic.views import CompositionView
 
 
-class Blueprint(RouteMixin):
+class Blueprint(BaseMixin, RouteMixin, MiddlewareMixin):
     def __init__(
         self,
         name,
@@ -34,8 +36,6 @@ class Blueprint(RouteMixin):
         :param strict_slashes: Enforce the API urls are requested with a
             training */*
         """
-        super().__init__()
-
         self.name = name
         self.url_prefix = url_prefix
         self.host = host
@@ -53,6 +53,14 @@ class Blueprint(RouteMixin):
         kwargs["apply"] = False
         return super().route(*args, **kwargs)
 
+    def static(self, *args, **kwargs):
+        kwargs["apply"] = False
+        return super().static(*args, **kwargs)
+
+    def middleware(self, *args, **kwargs):
+        kwargs["apply"] = False
+        return super().middleware(*args, **kwargs)
+
     @staticmethod
     def group(*blueprints, url_prefix=""):
         """
@@ -118,51 +126,26 @@ class Blueprint(RouteMixin):
                 future.ignore_body,
             )
 
-            _route = app._apply_route(apply_route)
+            route = app._apply_route(apply_route)
+            routes.append(route)
 
-        # TODO:
+        # Static Files
-        # for future in self.websocket_routes:
+        for future in self._future_statics:
-        #     # attach the blueprint name to the handler so that it can be
+            # Prepend the blueprint URI prefix if available
-        #     # prefixed properly in the router
+            uri = url_prefix + future.uri if url_prefix else future.uri
-        #     future.handler.__blueprintname__ = self.name
+            apply_route = FutureStatic(uri, *future[1:])
-        #     # Prepend the blueprint URI prefix if available
+            route = app._apply_static(apply_route)
-        #     uri = url_prefix + future.uri if url_prefix else future.uri
+            routes.append(route)
-        #     _routes, _ = app.websocket(
-        #         uri=uri,
-        #         host=future.host or self.host,
-        #         strict_slashes=future.strict_slashes,
-        #         name=future.name,
-        #     )(future.handler)
-        #     if _routes:
-        #         routes += _routes
 
-        # # Static Files
+        route_names = [route.name for route in routes if route]
-        # for future in self.statics:
-        #     # Prepend the blueprint URI prefix if available
-        #     uri = url_prefix + future.uri if url_prefix else future.uri
-        #     _routes = app.static(
-        #         uri, future.file_or_directory, *future.args, **future.kwargs
-        #     )
-        #     if _routes:
-        #         routes += _routes
 
-        # route_names = [route.name for route in routes if route]
+        # Middleware
+        for future in self._future_middleware:
+            app._apply_middleware(future, route_names)
 
-        # # Middleware
+        # Exceptions
-        # for future in self.middlewares:
+        for future in self.exceptions:
-        #     if future.args or future.kwargs:
+            app.exception(*future.args, **future.kwargs)(future.handler)
-        #         app.register_named_middleware(
-        #             future.middleware,
-        #             route_names,
-        #             *future.args,
-        #             **future.kwargs,
-        #         )
-        #     else:
-        #         app.register_named_middleware(future.middleware, route_names)
-
-        # # Exceptions
-        # for future in self.exceptions:
-        #     app.exception(*future.args, **future.kwargs)(future.handler)
 
         # Event listeners
         for event, listeners in self.listeners.items():
@@ -181,35 +164,6 @@ class Blueprint(RouteMixin):
 
         return decorator
 
-    def middleware(self, *args, **kwargs):
-        """
-        Create a blueprint middleware from a decorated function.
-
-        :param args: Positional arguments to be used while invoking the
-            middleware
-        :param kwargs: optional keyword args that can be used with the
-            middleware.
-        """
-
-        def register_middleware(_middleware):
-            future_middleware = FutureMiddleware(_middleware, args, kwargs)
-            self.middlewares.append(future_middleware)
-            return _middleware
-
-        # Detect which way this was called, @middleware or @middleware('AT')
-        if len(args) == 1 and len(kwargs) == 0 and callable(args[0]):
-            middleware = args[0]
-            args = []
-            return register_middleware(middleware)
-        else:
-            if kwargs.get("bp_group") and callable(args[0]):
-                middleware = args[0]
-                args = args[1:]
-                kwargs.pop("bp_group")
-                return register_middleware(middleware)
-            else:
-                return register_middleware
-
     def exception(self, *args, **kwargs):
         """
         This method enables the process of creating a global exception
@@ -230,20 +184,5 @@ class Blueprint(RouteMixin):
 
         return decorator
 
-    def static(self, uri, file_or_directory, *args, **kwargs):
+    def _generate_name(self, handler, name: str) -> str:
-        """Create a blueprint static route from a decorated function.
+        return f"{self.name}.{name or handler.__name__}"
-
-        :param uri: endpoint at which the route will be accessible.
-        :param file_or_directory: Static asset.
-        """
-        name = kwargs.pop("name", "static")
-        if not name.startswith(self.name + "."):
-            name = f"{self.name}.{name}"
-        kwargs.update(name=name)
-
-        strict_slashes = kwargs.get("strict_slashes")
-        if strict_slashes is None and self.strict_slashes is not None:
-            kwargs.update(strict_slashes=self.strict_slashes)
-
-        static = FutureStatic(uri, file_or_directory, args, kwargs)
-        self.statics.append(static)

sanic/mixins/base.py

@@ -0,0 +1,19 @@
+class Base(type):
+    def __new__(cls, name, bases, attrs):
+        init = attrs.get("__init__")
+
+        def __init__(self, *args, **kwargs):
+            nonlocal init
+            for base in type(self).__bases__:
+                if base.__name__ != "BaseMixin":
+                    base.__init__(self, *args, **kwargs)
+
+            if init:
+                init(self, *args, **kwargs)
+
+        attrs["__init__"] = __init__
+        return type.__new__(cls, name, bases, attrs)
+
+
+class BaseMixin(metaclass=Base):
+    ...

sanic/mixins/middleware.py

@@ -0,0 +1,41 @@
+from functools import partial
+from typing import Set
+
+from sanic.models.futures import FutureMiddleware
+
+
+class MiddlewareMixin:
+    def __init__(self, *args, **kwargs) -> None:
+        self._future_middleware: Set[FutureMiddleware] = set()
+
+    def _apply_middleware(self, middleware: FutureMiddleware):
+        raise NotImplementedError
+
+    def middleware(
+        self, middleware_or_request, attach_to="request", apply=True
+    ):
+        """
+        Decorate and register middleware to be called before a request.
+        Can either be called as *@app.middleware* or
+        *@app.middleware('request')*
+
+        :param: middleware_or_request: Optional parameter to use for
+            identifying which type of middleware is being registered.
+        """
+
+        def register_middleware(_middleware, attach_to="request"):
+            future_middleware = FutureMiddleware(_middleware, attach_to)
+            self._future_middleware.add(future_middleware)
+            if apply:
+                self._apply_middleware(future_middleware)
+            return _middleware
+
+        # Detect which way this was called, @middleware or @middleware('AT')
+        if callable(middleware_or_request):
+            return register_middleware(
+                middleware_or_request, attach_to=attach_to
+            )
+        else:
+            return partial(
+                register_middleware, attach_to=middleware_or_request
+            )

sanic/mixins/routes.py

@@ -1,25 +1,31 @@
 from functools import partial
 from inspect import signature
-from typing import List, Set
+from pathlib import PurePath
+from typing import List, Set, Union
 
 import websockets
 
 from sanic_routing.route import Route
 
 from sanic.constants import HTTP_METHODS
-from sanic.models.futures import FutureRoute
+from sanic.models.futures import FutureRoute, FutureStatic
 from sanic.views import CompositionView
 
 
 class RouteMixin:
-    def __init__(self) -> None:
+    def __init__(self, *args, **kwargs) -> None:
-        self._future_routes: Set[Route] = set()
+        self._future_routes: Set[FutureRoute] = set()
-        self._future_websocket_routes: Set[Route] = set()
+        self._future_statics: Set[FutureStatic] = set()
+        self.name = ""
+        self.strict_slashes = False
 
     def _apply_route(self, route: FutureRoute) -> Route:
         raise NotImplementedError
 
-    def _route(
+    def _apply_static(self, static: FutureStatic) -> Route:
+        raise NotImplementedError
+
+    def route(
         self,
         uri,
         methods=frozenset({"GET"}),
@@ -133,30 +139,6 @@ class RouteMixin:
 
         return decorator
 
-    def route(
-        self,
-        uri,
-        methods=frozenset({"GET"}),
-        host=None,
-        strict_slashes=None,
-        stream=False,
-        version=None,
-        name=None,
-        ignore_body=False,
-        apply=True,
-    ):
-        return self._route(
-            uri=uri,
-            methods=methods,
-            host=host,
-            strict_slashes=strict_slashes,
-            stream=stream,
-            version=version,
-            name=name,
-            ignore_body=ignore_body,
-            apply=apply,
-        )
-
     def add_route(
         self,
         handler,
@@ -435,7 +417,7 @@ class RouteMixin:
         :param version: Blueprint Version
         :param name: Unique name to identify the Websocket Route
         """
-        return self._route(
+        return self.route(
             uri=uri,
             host=host,
             methods=None,
@@ -474,11 +456,8 @@ class RouteMixin:
                 be used with :func:`url_for`
         :return: Objected decorated by :func:`websocket`
         """
-        if strict_slashes is None:
-            strict_slashes = self.strict_slashes
-
         return self.websocket(
-            uri,
+            uri=uri,
             host=host,
             strict_slashes=strict_slashes,
             subprotocols=subprotocols,
@@ -486,5 +465,69 @@ class RouteMixin:
             name=name,
         )(handler)
 
+    def static(
+        self,
+        uri,
+        file_or_directory: Union[str, bytes, PurePath],
+        pattern=r"/?.+",
+        use_modified_since=True,
+        use_content_range=False,
+        stream_large_files=False,
+        name="static",
+        host=None,
+        strict_slashes=None,
+        content_type=None,
+        apply=True,
+    ):
+        """
+        Register a root to serve files from. The input can either be a
+        file or a directory. This method will enable an easy and simple way
+        to setup the :class:`Route` necessary to serve the static files.
+
+        :param uri: URL path to be used for serving static content
+        :param file_or_directory: Path for the Static file/directory with
+            static files
+        :param pattern: Regex Pattern identifying the valid static files
+        :param use_modified_since: If true, send file modified time, and return
+            not modified if the browser's matches the server's
+        :param use_content_range: If true, process header for range requests
+            and sends the file part that is requested
+        :param stream_large_files: If true, use the
+            :func:`StreamingHTTPResponse.file_stream` handler rather
+            than the :func:`HTTPResponse.file` handler to send the file.
+            If this is an integer, this represents the threshold size to
+            switch to :func:`StreamingHTTPResponse.file_stream`
+        :param name: user defined name used for url_for
+        :param host: Host IP or FQDN for the service to use
+        :param strict_slashes: Instruct :class:`Sanic` to check if the request
+            URLs need to terminate with a */*
+        :param content_type: user defined content type for header
+        :return: routes registered on the router
+        :rtype: List[sanic.router.Route]
+        """
+
+        if not name.startswith(self.name + "."):
+            name = f"{self.name}.{name}"
+
+        if strict_slashes is None and self.strict_slashes is not None:
+            strict_slashes = self.strict_slashes
+
+        static = FutureStatic(
+            uri,
+            file_or_directory,
+            pattern,
+            use_modified_since,
+            use_content_range,
+            stream_large_files,
+            name,
+            host,
+            strict_slashes,
+            content_type,
+        )
+        self._future_statics.add(static)
+
+        if apply:
+            self._apply_static(static)
+
     def _generate_name(self, handler, name: str) -> str:
         return name or handler.__name__

sanic/models/futures.py

@@ -18,10 +18,20 @@ FutureRoute = namedtuple(
 FutureListener = namedtuple(
     "FutureListener", ["handler", "uri", "methods", "host"]
 )
-FutureMiddleware = namedtuple(
+FutureMiddleware = namedtuple("FutureMiddleware", ["middleware", "attach_to"])
-    "FutureMiddleware", ["middleware", "args", "kwargs"]
-)
 FutureException = namedtuple("FutureException", ["handler", "args", "kwargs"])
 FutureStatic = namedtuple(
-    "FutureStatic", ["uri", "file_or_directory", "args", "kwargs"]
+    "FutureStatic",
+    [
+        "uri",
+        "file_or_directory",
+        "pattern",
+        "use_modified_since",
+        "use_content_range",
+        "stream_large_files",
+        "name",
+        "host",
+        "strict_slashes",
+        "content_type",
+    ],
 )

sanic/static.py

@@ -16,6 +16,7 @@ from sanic.exceptions import (
 )
 from sanic.handlers import ContentRangeHandler
 from sanic.log import error_logger
+from sanic.models.futures import FutureStatic
 from sanic.response import HTTPResponse, file, file_stream
 
 
@@ -112,16 +113,7 @@ async def _static_request_handler(
 
 def register(
     app,
-    uri: str,
+    static: FutureStatic,
-    file_or_directory: Union[str, bytes, PurePath],
-    pattern,
-    use_modified_since,
-    use_content_range,
-    stream_large_files,
-    name: str = "static",
-    host=None,
-    strict_slashes=None,
-    content_type=None,
 ):
     # TODO: Though sanic is not a file server, I feel like we should at least
     #       make a good effort here.  Modified-since is nice, but we could
@@ -152,38 +144,42 @@ def register(
     :rtype: List[sanic.router.Route]
     """
 
-    if isinstance(file_or_directory, bytes):
+    if isinstance(static.file_or_directory, bytes):
-        file_or_directory = file_or_directory.decode("utf-8")
+        file_or_directory = static.file_or_directory.decode("utf-8")
-    elif isinstance(file_or_directory, PurePath):
+    elif isinstance(static.file_or_directory, PurePath):
-        file_or_directory = str(file_or_directory)
+        file_or_directory = str(static.file_or_directory)
-    elif not isinstance(file_or_directory, str):
+    elif not isinstance(static.file_or_directory, str):
         raise ValueError("Invalid file path string.")
+    else:
+        file_or_directory = static.file_or_directory
 
+    uri = static.uri
+    name = static.name
     # If we're not trying to match a file directly,
     # serve from the folder
     if not path.isfile(file_or_directory):
-        uri += "<file_uri:" + pattern + ">"
+        uri += "<file_uri:" + static.pattern + ">"
 
     # special prefix for static files
-    if not name.startswith("_static_"):
+    if not static.name.startswith("_static_"):
-        name = f"_static_{name}"
+        name = f"_static_{static.name}"
 
     _handler = wraps(_static_request_handler)(
         partial(
             _static_request_handler,
             file_or_directory,
-            use_modified_since,
+            static.use_modified_since,
-            use_content_range,
+            static.use_content_range,
-            stream_large_files,
+            static.stream_large_files,
-            content_type=content_type,
+            content_type=static.content_type,
         )
     )
 
     _routes, _ = app.route(
-        uri,
+        uri=uri,
         methods=["GET", "HEAD"],
         name=name,
-        host=host,
+        host=static.host,
-        strict_slashes=strict_slashes,
+        strict_slashes=static.strict_slashes,
     )(_handler)
     return _routes