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formdecorator.py
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formdecorator.py
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from functools import wraps
from logger import stacktrace
class FFException(Exception):
def __init__(self, exception, *args, **kwargs):
'''
The original exception with the parameters used in the function call
'''
super().__init__("%s" %exception)
self.exception = exception
self.args = args
self.kwargs = kwargs
def __str__(self):
return str(self.exception)
def __reduce__(self):
'''
To make our FFException work with pickle
append our exception to the beginning of args
'''
ps = super().__reduce__()
state = (ps[2]['exception'],) + ps[1]
return (ps[0], state, ps[2])
def FailFree(func):
'''
Decorator to wrap a function and prevent it from throwing an Exception
This allows for multiproccessing on the function which won't
stop the entire threaded run for one bad function.
return: original return of the function,
or an Exception if one occurred
'''
@wraps(func)
def wrapper(*args, **kwargs):
try:
return func(*args, **kwargs)
except Exception as e:
nargs = args
if args:
nargs = []
for x in args:
if isinstance(x, dict):
nargs.append(x.__class__)
else:
nargs.append(x)
print('nargs=', nargs)
print('kwargs=', kwargs)
print(e.__class__.__name__,str(func.__name__))
stacktrace("\n%s in %s" %(e.__class__.__name__,str(func.__name__)), *nargs,**kwargs)
return FFException(e, *args, **kwargs)
except:
stacktrace("Error of some sort")
return wrapper