Current File : //usr/lib/python2.7/site-packages/salt/utils/decorators/signature.py
# -*- coding: utf-8 -*-
'''
A decorator which returns a function with the same signature of the function
which is being wrapped.
'''
# Import Python libs
from __future__ import absolute_import, print_function, unicode_literals
import inspect
from functools import wraps
# Import Salt libs
import salt.utils.args
# Import 3rd-party libs
from salt.ext import six
def identical_signature_wrapper(original_function, wrapped_function):
'''
Return a function with identical signature as ``original_function``'s which
will call the ``wrapped_function``.
'''
context = {'__wrapped__': wrapped_function}
function_def = compile(
'def {0}({1}):\n'
' return __wrapped__({2})'.format(
# Keep the original function name
original_function.__name__,
# The function signature including defaults, i.e., 'timeout=1'
inspect.formatargspec(
*salt.utils.args.get_function_argspec(original_function)
)[1:-1],
# The function signature without the defaults
inspect.formatargspec(
formatvalue=lambda val: '',
*salt.utils.args.get_function_argspec(original_function)
)[1:-1]
),
'<string>',
'exec'
)
six.exec_(function_def, context)
return wraps(original_function)(context[original_function.__name__])
Mini Shell