def _get(self, url, method, host):
"""Get a request handler based on the URL of the request, or raises an
error. Internal method for caching.
:param url: request URL
:param method: request method
:return: handler, arguments, keyword arguments
"""
url = unquote(host + url)
# Check against known static routes
route = self.routes_static.get(url)
method_not_supported = MethodNotSupported(
f"Method {method} not allowed for URL {url}",
method=method,
allowed_methods=self.get_supported_methods(url),
)
if route:
if route.methods and method not in route.methods:
raise method_not_supported
match = route.pattern.match(url)
else:
route_found = False
# Move on to testing all regex routes
for route in self.routes_dynamic[url_hash(url)]:
match = route.pattern.match(url)
route_found |= match is not None
# Do early method checking
if match and method in route.methods:
break
else:
# Lastly, check against all regex routes that cannot be hashed
for route in self.routes_always_check:
match = route.pattern.match(url)
route_found |= match is not None
# Do early method checking
if match and method in route.methods:
break
else:
# Route was found but the methods didn't match
if route_found:
raise method_not_supported
raise NotFound(f"Requested URL {url} not found")
kwargs = {
p.name: p.cast(value)
for value, p in zip(match.groups(1), route.parameters)
}
route_handler = route.handler
if hasattr(route_handler, "handlers"):
route_handler = route_handler.handlers[method]
return route_handler, [], kwargs, route.uri, route.name, route.endpoint
def _get(
self, path: str, method: str,
host: Optional[str]) -> Tuple[Route, RouteHandler, Dict[str, Any]]:
try:
return self.resolve(
path=path,
method=method,
extra={"host": host} if host else None,
)
except RoutingNotFound as e:
raise NotFound("Requested URL {} not found".format(e.path))
except NoMethod as e:
raise MethodNotSupported(
"Method {} not allowed for URL {}".format(method, path),
method=method,
allowed_methods=e.allowed_methods,
)
def _get(self, path, method,
host) -> Tuple[Route, RouteHandler, Dict[str, Any]]:
try:
route, handler, params = self.resolve(
path=path,
method=method,
extra={"host": host},
)
except RoutingNotFound as e:
raise NotFound("Requested URL {} not found".format(e.path))
except NoMethod as e:
raise MethodNotSupported(
"Method {} not allowed for URL {}".format(method, path),
method=method,
allowed_methods=e.allowed_methods,
)
return (
route,
handler,
params,
)
def _get(self, path, method, host):
try:
route, handler, params = self.resolve(
path=path,
method=method,
extra={"host": host},
)
except RoutingNotFound as e:
raise NotFound("Requested URL {} not found".format(e.path))
except NoMethod as e:
raise MethodNotSupported(
"Method {} not allowed for URL {}".format(method, path),
method=method,
allowed_methods=e.allowed_methods,
)
return (
handler,
params,
route.path,
route.name,
route.ctx.ignore_body,
)
def _get(self, url, method, host):
"""Get a request handler based on the URL of the request, or raises an
error. Internal method for caching.
:param url: request URL
:param method: request method
:return: handler, arguments, keyword arguments
"""
# 去掉url中的转义字符，编码序列替换为uncode
url = unquote(host + url)
# Check against known static routes
# Route = namedtuple(
# "Route", ["handler", "methods", "pattern", "parameters", "name", "uri"]
# )
route = self.routes_static.get(url)
method_not_supported = MethodNotSupported(
f"Method {method} not allowed for URL {url}",
method=method,
allowed_methods=self.get_supported_methods(url),
)
if route:
if route.methods and method not in route.methods:
raise method_not_supported
match = route.pattern.match(url)
else:
route_found = False
# Move on to testing all regex routes
for route in self.routes_dynamic[url_hash(url)]:
match = route.pattern.match(url)
# 只要match 是1就是1 TODO not_know
route_found |= match is not None
# Do early method checking
if match and method in route.methods:
# 跳过finally，不再检测routes_always_check
break
else: #like finally
# Lastly, check against all regex routes that cannot be hashed
for route in self.routes_always_check:
match = route.pattern.match(url)
route_found |= match is not None
# Do early method checking
if match and method in route.methods:
# 跳过finally
break
else:
# Route was found but the methods didn't match
if route_found:
raise method_not_supported
raise NotFound(f"Requested URL {url} not found")
# 将match.groups(1)与route.parameters进行打包为元组，https://www.runoob.com/python/python-func-zip.html
# match.groups(1)代表是将match的结果分组返回比如match的结果是123abc!@#,第一组是123，二组是abc，三组是!@#
kwargs = {
p.name: p.cast(value)
for value, p in zip(match.groups(1), route.parameters)
}
route_handler = route.handler
if hasattr(route_handler, "handlers"):
route_handler = route_handler.handlers[method]
return route_handler, [], kwargs, route.uri, route.name
