def authenticate(**credentials):
"""
If the given credentials are valid, return a User object.
"""
for backend, backend_path in _get_backends(return_tuples=True):
try:
inspect.getcallargs(backend.authenticate, **credentials)
except TypeError:
# This backend doesn't accept these credentials as arguments. Try the next one.
continue
try:
user = backend.authenticate(**credentials)
except PermissionDenied:
# This backend says to stop in our tracks - this user should not be allowed in at all.
return None
if user is None:
continue
# Annotate the user object with the path of the backend.
user.backend = backend_path
return user
# The credentials supplied are invalid to all backends, fire signal
user_login_failed.send(sender=__name__,
credentials=_clean_credentials(credentials))
python类getcallargs()的实例源码
def __new__(cls, name, bases, attrs):
get_form = attrs.get('get_form')
if get_form and inspect.isfunction(get_form):
try:
inspect.getcallargs(get_form, None)
except TypeError:
warnings.warn(
"`%s.%s.get_form` method must define a default value for "
"its `form_class` argument." % (attrs['__module__'], name),
RemovedInDjango110Warning, stacklevel=2
)
def get_form_with_form_class(self, form_class=None):
if form_class is None:
form_class = self.get_form_class()
return get_form(self, form_class=form_class)
attrs['get_form'] = get_form_with_form_class
return super(FormMixinBase, cls).__new__(cls, name, bases, attrs)
def authenticate(**credentials):
"""
If the given credentials are valid, return a User object.
"""
for backend, backend_path in _get_backends(return_tuples=True):
try:
inspect.getcallargs(backend.authenticate, **credentials)
except TypeError:
# This backend doesn't accept these credentials as arguments. Try the next one.
continue
try:
user = backend.authenticate(**credentials)
except PermissionDenied:
# This backend says to stop in our tracks - this user should not be allowed in at all.
break
if user is None:
continue
# Annotate the user object with the path of the backend.
user.backend = backend_path
return user
# The credentials supplied are invalid to all backends, fire signal
user_login_failed.send(sender=__name__, credentials=_clean_credentials(credentials))
def assertEqualException(self, func, call_param_string, locs=None):
locs = dict(locs or {}, func=func)
try:
eval('func(%s)' % call_param_string, None, locs)
except Exception as e:
ex1 = e
else:
self.fail('Exception not raised')
try:
eval('inspect.getcallargs(func, %s)' % call_param_string, None,
locs)
except Exception as e:
ex2 = e
else:
self.fail('Exception not raised')
self.assertIs(type(ex1), type(ex2))
self.assertEqual(str(ex1), str(ex2))
del ex1, ex2
def authenticate(**credentials):
"""
If the given credentials are valid, return a User object.
"""
for backend, backend_path in _get_backends(return_tuples=True):
try:
inspect.getcallargs(backend.authenticate, **credentials)
except TypeError:
# This backend doesn't accept these credentials as arguments. Try the next one.
continue
try:
user = backend.authenticate(**credentials)
except PermissionDenied:
# This backend says to stop in our tracks - this user should not be allowed in at all.
break
if user is None:
continue
# Annotate the user object with the path of the backend.
user.backend = backend_path
return user
# The credentials supplied are invalid to all backends, fire signal
user_login_failed.send(sender=__name__, credentials=_clean_credentials(credentials))
def api_exc_patch(func):
if isinstance(func, FunctionType):
@wraps(func)
def deco(*args, **kwargs):
try:
return func(*args, **kwargs)
except RQInvalidArgument:
raise
except Exception as e:
if isinstance(e, TypeError):
exc_info = sys.exc_info()
try:
ret = inspect.getcallargs(unwrapper(func), *args, **kwargs)
except TypeError:
t, v, tb = exc_info
raise patch_user_exc(v.with_traceback(tb))
if getattr(e, EXC_EXT_NAME, EXC_TYPE.NOTSET) == EXC_TYPE.NOTSET:
patch_system_exc(e)
raise
return deco
return func
def authenticate(**credentials):
"""
If the given credentials are valid, return a User object.
"""
for backend, backend_path in _get_backends(return_tuples=True):
try:
inspect.getcallargs(backend.authenticate, **credentials)
except TypeError:
# This backend doesn't accept these credentials as arguments. Try the next one.
continue
try:
user = backend.authenticate(**credentials)
except PermissionDenied:
# This backend says to stop in our tracks - this user should not be allowed in at all.
return None
if user is None:
continue
# Annotate the user object with the path of the backend.
user.backend = backend_path
return user
# The credentials supplied are invalid to all backends, fire signal
user_login_failed.send(sender=__name__,
credentials=_clean_credentials(credentials))
def authenticate(**credentials):
"""
If the given credentials are valid, return a User object.
"""
for backend, backend_path in _get_backends(return_tuples=True):
try:
inspect.getcallargs(backend.authenticate, **credentials)
except TypeError:
# This backend doesn't accept these credentials as arguments. Try the next one.
continue
try:
user = backend.authenticate(**credentials)
except PermissionDenied:
# This backend says to stop in our tracks - this user should not be allowed in at all.
return None
if user is None:
continue
# Annotate the user object with the path of the backend.
user.backend = backend_path
return user
# The credentials supplied are invalid to all backends, fire signal
user_login_failed.send(sender=__name__,
credentials=_clean_credentials(credentials))
def __new__(cls, name, bases, attrs):
get_form = attrs.get('get_form')
if get_form and inspect.isfunction(get_form):
try:
inspect.getcallargs(get_form, None)
except TypeError:
warnings.warn(
"`%s.%s.get_form` method must define a default value for "
"its `form_class` argument." % (attrs['__module__'], name),
RemovedInDjango110Warning, stacklevel=2
)
def get_form_with_form_class(self, form_class=None):
if form_class is None:
form_class = self.get_form_class()
return get_form(self, form_class=form_class)
attrs['get_form'] = get_form_with_form_class
return super(FormMixinBase, cls).__new__(cls, name, bases, attrs)
def is_closable_iterator(obj):
# Not an iterator.
if not is_iterator(obj):
return False
# A generator - the easiest thing to deal with.
import inspect
if inspect.isgenerator(obj):
return True
# A custom iterator. Look for a close method...
if not (hasattr(obj, 'close') and callable(obj.close)):
return False
# ... which doesn't require any arguments.
try:
inspect.getcallargs(obj.close)
except TypeError:
return False
else:
return True
def authenticate(**credentials):
"""
If the given credentials are valid, return a User object.
"""
for backend, backend_path in _get_backends(return_tuples=True):
try:
inspect.getcallargs(backend.authenticate, **credentials)
except TypeError:
# This backend doesn't accept these credentials as arguments. Try the next one.
continue
try:
user = backend.authenticate(**credentials)
except PermissionDenied:
# This backend says to stop in our tracks - this user should not be allowed in at all.
return None
if user is None:
continue
# Annotate the user object with the path of the backend.
user.backend = backend_path
return user
# The credentials supplied are invalid to all backends, fire signal
user_login_failed.send(sender=__name__,
credentials=_clean_credentials(credentials))
def authenticate(**credentials):
"""
If the given credentials are valid, return a User object.
"""
for backend, backend_path in _get_backends(return_tuples=True):
try:
inspect.getcallargs(backend.authenticate, **credentials)
except TypeError:
# This backend doesn't accept these credentials as arguments. Try the next one.
continue
try:
user = backend.authenticate(**credentials)
except PermissionDenied:
# This backend says to stop in our tracks - this user should not be allowed in at all.
return None
if user is None:
continue
# Annotate the user object with the path of the backend.
user.backend = backend_path
return user
# The credentials supplied are invalid to all backends, fire signal
user_login_failed.send(sender=__name__,
credentials=_clean_credentials(credentials))
def wrap_instance_event(function):
"""Wraps a method to log the event taken on the instance, and result.
This decorator wraps a method to log the start and result of an event, as
part of an action taken on an instance.
"""
@functools.wraps(function)
def decorated_function(self, context, *args, **kwargs):
wrapped_func = safe_utils.get_wrapped_function(function)
keyed_args = inspect.getcallargs(wrapped_func, self, context, *args,
**kwargs)
instance_uuid = keyed_args['instance']['uuid']
event_name = 'compute_{0}'.format(function.__name__)
with compute_utils.EventReporter(context, event_name, instance_uuid):
return function(self, context, *args, **kwargs)
return decorated_function
def declare_schema(**schemas):
"""Declares data schema for function arguments.
:param schemas: the mapping, where key is argument name, value is schema
the schema may be callable object or method of class
in this case the wrapped function should be method of
same class
:raises ValueError: if the passed data does not fit declared schema
"""
def decorator(func):
validators = {k: _build_validator(v) for k, v in schemas.items()}
defaults = _get_default_arguments(func)
@functools.wraps(func)
def wrapper(*args, **kwargs):
bound_args = inspect.getcallargs(func, *args, **kwargs)
for n, v in bound_args.items():
if v is not defaults.get(n, _SENTINEL) and n in validators:
validators[n](args and args[0] or None, v)
return func(*args, **kwargs)
return wrapper
return decorator
def authenticate(**credentials):
"""
If the given credentials are valid, return a User object.
"""
for backend, backend_path in _get_backends(return_tuples=True):
try:
inspect.getcallargs(backend.authenticate, **credentials)
except TypeError:
# This backend doesn't accept these credentials as arguments. Try the next one.
continue
try:
user = backend.authenticate(**credentials)
except PermissionDenied:
# This backend says to stop in our tracks - this user should not be allowed in at all.
return None
if user is None:
continue
# Annotate the user object with the path of the backend.
user.backend = backend_path
return user
# The credentials supplied are invalid to all backends, fire signal
user_login_failed.send(sender=__name__,
credentials=_clean_credentials(credentials))
def __new__(cls, name, bases, attrs):
get_form = attrs.get('get_form')
if get_form and inspect.isfunction(get_form):
try:
inspect.getcallargs(get_form, None)
except TypeError:
warnings.warn(
"`%s.%s.get_form` method must define a default value for "
"its `form_class` argument." % (attrs['__module__'], name),
RemovedInDjango20Warning, stacklevel=2
)
def get_form_with_form_class(self, form_class=None):
if form_class is None:
form_class = self.get_form_class()
return get_form(self, form_class=form_class)
attrs['get_form'] = get_form_with_form_class
return super(FormMixinBase, cls).__new__(cls, name, bases, attrs)
def skip(self, *args, **kwargs):
if not self.skip_arg:
return False
elif isinstance(self.skip_arg, six.string_types):
callargs = inspect.getcallargs(self.fn, *args, **kwargs)
return callargs[self.skip_arg]
elif isfunction(self.skip_arg):
return self.skip_arg(*args, **kwargs)
else:
assert False, "skip_arg must be None, a string, or a function " \
"and this should have been checked in __init__"
def register_arg_validator(cls, extras=[]):
"""?????????????
.. note::
- ???????????????????????
- ?????????????????????????
????????????
:param BaesArgValidator cls: ?????????
"""
assert issubclass(cls, BaseArgValidator)
def _inner(func):
@wraps(func)
def wrapper(*args, **kwargs):
callargs = getcallargs(func, *args, **kwargs)
validator = cls(callargs, extras)
if not validator.is_valid():
validator.handle_errors()
return
# XXX ???????????????????????????
return func(**validator.cleaned_data)
return wrapper
return _inner
def _authenticate_with_backend(backend, backend_path, request, credentials):
args = (request,)
# Does the backend accept a request argument?
try:
inspect.getcallargs(backend.authenticate, request, **credentials)
except TypeError:
args = ()
credentials.pop('request', None)
# Does the backend accept a request keyword argument?
try:
inspect.getcallargs(backend.authenticate, request=request, **credentials)
except TypeError:
# Does the backend accept credentials without request?
try:
inspect.getcallargs(backend.authenticate, **credentials)
except TypeError:
# This backend doesn't accept these credentials as arguments. Try the next one.
return None
else:
warnings.warn(
"Update %s.authenticate() to accept a positional "
"`request` argument." % backend_path,
RemovedInDjango21Warning
)
else:
credentials['request'] = request
warnings.warn(
"In %s.authenticate(), move the `request` keyword argument "
"to the first positional argument." % backend_path,
RemovedInDjango21Warning
)
return backend.authenticate(*args, **credentials)
def wrap_exception(notifier=None, event_type=None):
"""This decorator wraps a method to catch any exceptions.
It logs the exception as well as optionally sending
it to the notification system.
"""
def inner(f):
def wrapped(self, context, *args, **kwargs):
# Don't store self or context in the payload, it now seems to
# contain confidential information.
try:
return f(self, context, *args, **kwargs)
except Exception as e:
with excutils.save_and_reraise_exception():
if notifier:
call_dict = inspect.getcallargs(f, self, context,
*args, **kwargs)
payload = dict(exception=e,
private=dict(args=call_dict)
)
temp_type = event_type
if not temp_type:
# If f has multiple decorators, they must use
# functools.wraps to ensure the name is
# propagated.
temp_type = f.__name__
notifier.error(context, temp_type, payload)
return functools.wraps(f)(wrapped)
return inner
