def validateAfter(func, validator=None):
'''
Function wrapper for post-invocation-validation
@param func: a target function
@param validator: default=None, checks getSafe and returns the getSafe(may be transformed) is the value if this is None or not-function type, or invokes the value with 'getSafe' if this is a function
@return: a wrapped function
'''
@wraps(func)
def wrapped(*Args, **kwArgs):
getSafe = func(*Args, **kwArgs)
if validator is None and getSafe is not None:
raise ValidationException("getSafe=%s expect=None")
elif isinstance(validator, types.FunctionType):
getSafe = validator(func, getSafe, *Args, **kwArgs)
return getSafe
return inheritOriginalArgSpec(wrapped, func)
def adapter(func):
@wraps(func)
def wrapped(*args, **kwargs):
try:
return func(*args, **kwargs)
except BaseException as e:
if excepts.isValid(e):
raise
else:
raise ValidationException("%s is not a checked error" %
str(type(e)))
except:
excInfo = sys.exc_info()
if excepts.isValid(excInfo[0]):
raise
else:
raise ValidationException(
"%s is not a checked error(exc_info=%s)" %
toStrTuple(excInfo[0], excInfo))
return inheritOriginalArgSpec(wrapped, func)
def validateBefore(func, validator=None):
'''
Function wrapper for pre-invocation-validation
@param func: a target function
@param validator: default=None, no validation is if this is None, or validate before calling the function if this is a function
@return: a function which is wrapped by validator
'''
if validator is None:
return func
else:
iaa = InvocableArgumentAccessor(func)
@wraps(func)
def wrapped(*Args, **kwArgs):
if isinstance(validator, types.FunctionType):
checkArguments_ArgumentManipulator = validator(
func, iaa, *Args, **kwArgs)
return func(*checkArguments_ArgumentManipulator.fullArgs,
**checkArguments_ArgumentManipulator.kwArgs)
else:
raise ValidationException("Cannot Value-validation")
return inheritOriginalArgSpec(wrapped, func)
def adapter(func):
@wraps(func)
def wrapped(*args, **kwargs):
return validateBefore(func, _instanceOf)(*args, **kwargs)
return inheritOriginalArgSpec(wrapped, func)
def adapter(func):
@wraps(func)
def wrapped(*args, **kwargs):
return validateAfter(func, _resultIs)(*args, **kwargs)
return inheritOriginalArgSpec(wrapped, func)