def _find_handler(self):
# Identify the handler to use as soon as we have the request.
# Save url path arguments for later.
app = self.application
handlers = app._get_host_handlers(self.request)
if not handlers:
self.handler_class = RedirectHandler
self.handler_kwargs = dict(url="%s://%s/"
% (self.request.protocol,
app.default_host))
return
for spec in handlers:
match = spec.regex.match(self.request.path)
if match:
self.handler_class = spec.handler_class
self.handler_kwargs = spec.kwargs
if spec.regex.groups:
# Pass matched groups to the handler. Since
# match.groups() includes both named and
# unnamed groups, we want to use either groups
# or groupdict but not both.
if spec.regex.groupindex:
self.path_kwargs = dict(
(str(k), _unquote_or_none(v))
for (k, v) in match.groupdict().items())
else:
self.path_args = [_unquote_or_none(s)
for s in match.groups()]
return
if app.settings.get('default_handler_class'):
self.handler_class = app.settings['default_handler_class']
self.handler_kwargs = app.settings.get(
'default_handler_args', {})
else:
self.handler_class = ErrorHandler
self.handler_kwargs = dict(status_code=404)
python类RedirectHandler()的实例源码
def __call__(self, request):
"""Called by HTTPServer to execute the request."""
transforms = [t(request) for t in self.transforms]
handler = None
args = []
kwargs = {}
handlers = self._get_host_handlers(request)
if not handlers:
handler = RedirectHandler(
self, request, url="http://" + self.default_host + "/")
else:
for spec in handlers:
match = spec.regex.match(request.path)
if match:
handler = spec.handler_class(self, request, **spec.kwargs)
if spec.regex.groups:
# None-safe wrapper around url_unescape to handle
# unmatched optional groups correctly
def unquote(s):
if s is None: return s
return escape.url_unescape(s, encoding=None)
# Pass matched groups to the handler. Since
# match.groups() includes both named and unnamed groups,
# we want to use either groups or groupdict but not both.
# Note that args are passed as bytes so the handler can
# decide what encoding to use.
if spec.regex.groupindex:
kwargs = dict(
(k, unquote(v))
for (k, v) in match.groupdict().iteritems())
else:
args = [unquote(s) for s in match.groups()]
break
if not handler:
handler = ErrorHandler(self, request, status_code=404)
# In debug mode, re-compile templates and reload static files on every
# request so you don't need to restart to see changes
if self.settings.get("debug"):
if getattr(RequestHandler, "_templates", None):
for loader in RequestHandler._templates.values():
loader.reset()
RequestHandler._static_hashes = {}
handler._execute(transforms, *args, **kwargs)
return handler
def __call__(self, request):
"""Called by HTTPServer to execute the request."""
transforms = [t(request) for t in self.transforms]
handler = None
args = []
kwargs = {}
handlers = self._get_host_handlers(request)
if not handlers:
handler = RedirectHandler(
request, "http://" + self.default_host + "/")
else:
for spec in handlers:
match = spec.regex.match(request.path)
if match:
# None-safe wrapper around urllib.unquote to handle
# unmatched optional groups correctly
def unquote(s):
if s is None: return s
return urllib.unquote(s)
handler = spec.handler_class(self, request, **spec.kwargs)
# Pass matched groups to the handler. Since
# match.groups() includes both named and unnamed groups,
# we want to use either groups or groupdict but not both.
kwargs = dict((k, unquote(v))
for (k, v) in match.groupdict().iteritems())
if kwargs:
args = []
else:
args = [unquote(s) for s in match.groups()]
break
if not handler:
handler = ErrorHandler(self, request, 404)
# In debug mode, re-compile templates and reload static files on every
# request so you don't need to restart to see changes
if self.settings.get("debug"):
if getattr(RequestHandler, "_templates", None):
map(lambda loader: loader.reset(),
RequestHandler._templates.values())
RequestHandler._static_hashes = {}
# ????????:
handler._execute(transforms, *args, **kwargs)
return handler
def __call__(self, request):
"""Called by HTTPServer to execute the request."""
transforms = [t(request) for t in self.transforms]
handler = None
args = []
kwargs = {}
handlers = self._get_host_handlers(request)
if not handlers:
handler = RedirectHandler(
self, request, url="http://" + self.default_host + "/")
else:
for spec in handlers:
match = spec.regex.match(request.path)
if match:
handler = spec.handler_class(self, request, **spec.kwargs)
if spec.regex.groups:
# None-safe wrapper around url_unescape to handle
# unmatched optional groups correctly
def unquote(s):
if s is None:
return s
return escape.url_unescape(s, encoding=None,
plus=False)
# Pass matched groups to the handler. Since
# match.groups() includes both named and unnamed groups,
# we want to use either groups or groupdict but not both.
# Note that args are passed as bytes so the handler can
# decide what encoding to use.
if spec.regex.groupindex:
kwargs = dict(
(str(k), unquote(v))
for (k, v) in match.groupdict().items())
else:
args = [unquote(s) for s in match.groups()]
break
if not handler:
if self.settings.get('default_handler_class'):
handler_class = self.settings['default_handler_class']
handler_args = self.settings.get(
'default_handler_args', {})
else:
handler_class = ErrorHandler
handler_args = dict(status_code=404)
handler = handler_class(self, request, **handler_args)
# If template cache is disabled (usually in the debug mode),
# re-compile templates and reload static files on every
# request so you don't need to restart to see changes
if not self.settings.get("compiled_template_cache", True):
with RequestHandler._template_loader_lock:
for loader in RequestHandler._template_loaders.values():
loader.reset()
if not self.settings.get('static_hash_cache', True):
StaticFileHandler.reset()
handler._execute(transforms, *args, **kwargs)
return handler
def __call__(self, request):
"""Called by HTTPServer to execute the request."""
transforms = [t(request) for t in self.transforms]
handler = None
args = []
kwargs = {}
handlers = self._get_host_handlers(request)
if not handlers:
handler = RedirectHandler(
self, request, url="http://" + self.default_host + "/")
else:
for spec in handlers:
match = spec.regex.match(request.path)
if match:
handler = spec.handler_class(self, request, **spec.kwargs)
if spec.regex.groups:
# None-safe wrapper around url_unescape to handle
# unmatched optional groups correctly
def unquote(s):
if s is None: return s
return escape.url_unescape(s, encoding=None)
# Pass matched groups to the handler. Since
# match.groups() includes both named and unnamed groups,
# we want to use either groups or groupdict but not both.
# Note that args are passed as bytes so the handler can
# decide what encoding to use.
if spec.regex.groupindex:
kwargs = dict(
(k, unquote(v))
for (k, v) in match.groupdict().iteritems())
else:
args = [unquote(s) for s in match.groups()]
break
if not handler:
handler = ErrorHandler(self, request, status_code=404)
# In debug mode, re-compile templates and reload static files on every
# request so you don't need to restart to see changes
if self.settings.get("debug"):
if getattr(RequestHandler, "_templates", None):
for loader in RequestHandler._templates.values():
loader.reset()
RequestHandler._static_hashes = {}
handler._execute(transforms, *args, **kwargs)
return handler
def __call__(self, request):
"""Called by HTTPServer to execute the request."""
transforms = [t(request) for t in self.transforms]
handler = None
args = []
kwargs = {}
handlers = self._get_host_handlers(request)
if not handlers:
handler = RedirectHandler(
self, request, url="http://" + self.default_host + "/")
else:
for spec in handlers:
match = spec.regex.match(request.path)
if match:
handler = spec.handler_class(self, request, **spec.kwargs)
if spec.regex.groups:
# None-safe wrapper around url_unescape to handle
# unmatched optional groups correctly
def unquote(s):
if s is None:
return s
return escape.url_unescape(s, encoding=None)
# Pass matched groups to the handler. Since
# match.groups() includes both named and unnamed groups,
# we want to use either groups or groupdict but not both.
# Note that args are passed as bytes so the handler can
# decide what encoding to use.
if spec.regex.groupindex:
kwargs = dict(
(str(k), unquote(v))
for (k, v) in match.groupdict().items())
else:
args = [unquote(s) for s in match.groups()]
break
if not handler:
handler = ErrorHandler(self, request, status_code=404)
# In debug mode, re-compile templates and reload static files on every
# request so you don't need to restart to see changes
if self.settings.get("debug"):
with RequestHandler._template_loader_lock:
for loader in RequestHandler._template_loaders.values():
loader.reset()
StaticFileHandler.reset()
handler._execute(transforms, *args, **kwargs)
return handler
