Replace safe_utils.getcallargs with inspect.getcallargs
safe_utils.getcallargs was written to support python2.6 which did not have inspect.getcallargs. Now that support for python2.6 has been dropped it should be replaced with inspect.getcallargs. Change-Id: Idf5b9a7f4d10b81b1be9aed26505e3acaa6f7e24
This commit is contained in:
Andrew Laski
parent
1b757c328d
commit
997bec1bb9
@ -28,6 +28,7 @@ terminating it.
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import base64
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import contextlib
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import functools
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import inspect
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import socket
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import sys
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import time
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@ -288,8 +289,8 @@ def errors_out_migration(function):
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except Exception as ex:
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with excutils.save_and_reraise_exception():
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wrapped_func = safe_utils.get_wrapped_function(function)
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keyed_args = safe_utils.getcallargs(wrapped_func, self,
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context, *args, **kwargs)
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keyed_args = inspect.getcallargs(wrapped_func, self, context,
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*args, **kwargs)
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migration = keyed_args['migration']
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# NOTE(rajesht): If InstanceNotFound error is thrown from
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@ -330,8 +331,8 @@ def reverts_task_state(function):
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except Exception:
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with excutils.save_and_reraise_exception():
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wrapped_func = safe_utils.get_wrapped_function(function)
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keyed_args = safe_utils.getcallargs(wrapped_func, self,
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context, *args, **kwargs)
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keyed_args = inspect.getcallargs(wrapped_func, self, context,
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*args, **kwargs)
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# NOTE(mriedem): 'instance' must be in keyed_args because we
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# have utils.expects_func_args('instance') decorating this
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# method.
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@ -390,8 +391,8 @@ def wrap_instance_event(function):
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@functools.wraps(function)
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def decorated_function(self, context, *args, **kwargs):
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wrapped_func = safe_utils.get_wrapped_function(function)
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keyed_args = safe_utils.getcallargs(wrapped_func, self, context, *args,
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**kwargs)
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keyed_args = inspect.getcallargs(wrapped_func, self, context, *args,
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**kwargs)
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instance_uuid = keyed_args['instance']['uuid']
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event_name = 'compute_{0}'.format(function.__name__)
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@ -23,6 +23,7 @@ SHOULD include dedicated exception logging.
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"""
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import functools
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import inspect
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import sys
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from oslo_config import cfg
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@ -91,9 +92,8 @@ def wrap_exception(notifier=None, get_notifier=None):
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if notifier or get_notifier:
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payload = dict(exception=e)
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wrapped_func = safe_utils.get_wrapped_function(f)
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call_dict = safe_utils.getcallargs(wrapped_func, self,
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context, *args,
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**kw)
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call_dict = inspect.getcallargs(wrapped_func, self,
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context, *args, **kw)
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# self can't be serialized and shouldn't be in the
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# payload
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call_dict.pop('self', None)
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@ -17,39 +17,6 @@
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"""Utilities and helper functions that won't produce circular imports."""
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import inspect
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def getcallargs(function, *args, **kwargs):
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"""This is a simplified inspect.getcallargs (2.7+).
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It should be replaced when python >= 2.7 is standard.
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This method can only properly grab arguments which are passed in as
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keyword arguments, or given names by the method being called. This means
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that an ``*arg`` in a method signature and any arguments captured by it
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will be left out of the results.
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As an example: if function is defined as function(red, blue, green, *args)
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then arguments captured by *args won't be returned. If function is called
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as function('red', 'blue', 'green') those will all be captured.
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"""
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keyed_args = {}
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argnames, varargs, keywords, defaults = inspect.getargspec(function)
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keyed_args.update(kwargs)
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remaining_argnames = filter(lambda x: x not in keyed_args, argnames)
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keyed_args.update(dict(zip(remaining_argnames, args)))
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if defaults:
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num_defaults = len(defaults)
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for argname, value in zip(argnames[-num_defaults:], defaults):
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if argname not in keyed_args:
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keyed_args[argname] = value
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return keyed_args
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def get_wrapped_function(function):
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"""Get the method at the bottom of a stack of decorators."""
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@ -18,100 +18,6 @@ from nova import safe_utils
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from nova import test
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class GetCallArgsTestCase(test.NoDBTestCase):
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def _test_func(self, instance, red=None, blue=None):
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pass
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def test_all_kwargs(self):
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args = (self,)
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kwargs = {'instance': {'uuid': 1}, 'red': 3, 'blue': 4}
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callargs = safe_utils.getcallargs(self._test_func, *args, **kwargs)
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# implicit self counts as an arg
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self.assertEqual(4, len(callargs))
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self.assertIn('instance', callargs)
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self.assertEqual({'uuid': 1}, callargs['instance'])
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self.assertIn('red', callargs)
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self.assertEqual(3, callargs['red'])
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self.assertIn('blue', callargs)
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self.assertEqual(4, callargs['blue'])
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def test_all_args(self):
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args = (self, {'uuid': 1}, 3, 4)
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kwargs = {}
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callargs = safe_utils.getcallargs(self._test_func, *args, **kwargs)
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# implicit self counts as an arg
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self.assertEqual(4, len(callargs))
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self.assertIn('instance', callargs)
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self.assertEqual({'uuid': 1}, callargs['instance'])
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self.assertIn('red', callargs)
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self.assertEqual(3, callargs['red'])
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self.assertIn('blue', callargs)
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self.assertEqual(4, callargs['blue'])
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def test_mixed_args(self):
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args = (self, {'uuid': 1}, 3)
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kwargs = {'blue': 4}
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callargs = safe_utils.getcallargs(self._test_func, *args, **kwargs)
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# implicit self counts as an arg
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self.assertEqual(4, len(callargs))
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self.assertIn('instance', callargs)
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self.assertEqual({'uuid': 1}, callargs['instance'])
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self.assertIn('red', callargs)
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self.assertEqual(3, callargs['red'])
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self.assertIn('blue', callargs)
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self.assertEqual(4, callargs['blue'])
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def test_partial_kwargs(self):
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args = (self,)
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kwargs = {'instance': {'uuid': 1}, 'red': 3}
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callargs = safe_utils.getcallargs(self._test_func, *args, **kwargs)
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# implicit self counts as an arg
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self.assertEqual(4, len(callargs))
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self.assertIn('instance', callargs)
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self.assertEqual({'uuid': 1}, callargs['instance'])
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self.assertIn('red', callargs)
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self.assertEqual(3, callargs['red'])
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self.assertIn('blue', callargs)
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self.assertIsNone(callargs['blue'])
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def test_partial_args(self):
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args = (self, {'uuid': 1}, 3)
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kwargs = {}
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callargs = safe_utils.getcallargs(self._test_func, *args, **kwargs)
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# implicit self counts as an arg
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self.assertEqual(4, len(callargs))
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self.assertIn('instance', callargs)
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self.assertEqual({'uuid': 1}, callargs['instance'])
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self.assertIn('red', callargs)
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self.assertEqual(3, callargs['red'])
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self.assertIn('blue', callargs)
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self.assertIsNone(callargs['blue'])
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def test_partial_mixed_args(self):
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args = (self, 3)
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kwargs = {'instance': {'uuid': 1}}
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callargs = safe_utils.getcallargs(self._test_func, *args, **kwargs)
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self.assertEqual(4, len(callargs))
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self.assertIn('instance', callargs)
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self.assertEqual({'uuid': 1}, callargs['instance'])
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self.assertIn('red', callargs)
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self.assertEqual(3, callargs['red'])
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self.assertIn('blue', callargs)
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self.assertIsNone(callargs['blue'])
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def test_no_named_args(self):
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def _fake(*args, **kwargs):
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pass
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# This is not captured by getcallargs
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args = (3,)
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kwargs = {'instance': {'uuid': 1}}
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callargs = safe_utils.getcallargs(_fake, *args, **kwargs)
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self.assertEqual(1, len(callargs))
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self.assertIn('instance', callargs)
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self.assertEqual({'uuid': 1}, callargs['instance'])
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class WrappedCodeTestCase(test.NoDBTestCase):
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"""Test the get_wrapped_function utility method."""
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