deb-murano/murano/dsl/murano_method.py
Stan Lagun 864aa3da57 Namespace resolution error was fixed
For method invocation context of a sender object was used.
Then the current type was taken from it and class names were
resolved using namespaces of that class. However in situations
when contracted method was located in parent class that had
different namespace declarations it lead to a wrong namespaces
being used.

This commit adds information on which class has the contract
so that the sender could be upcasted to it first.

Change-Id: Ieb4fca4ea7f2c64c7a731b81fee2ccaff1b1a531
Closes-Bug: #1489524
2015-08-28 02:37:48 +03:00

116 lines
3.8 KiB
Python

# Copyright (c) 2014 Mirantis, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import collections
import types
from yaql.language import specs
from murano.dsl import dsl
from murano.dsl import dsl_types
from murano.dsl import macros
from murano.dsl import typespec
from murano.dsl import virtual_exceptions
from murano.dsl import yaql_integration
macros.register()
virtual_exceptions.register()
class MethodUsages(object):
Action = 'Action'
Runtime = 'Runtime'
All = set([Action, Runtime])
class MuranoMethod(dsl_types.MuranoMethod):
def __init__(self, murano_class, name, payload):
self._name = name
self._murano_class = murano_class
if callable(payload):
if isinstance(payload, specs.FunctionDefinition):
self._body = payload
else:
self._body = yaql_integration.get_function_definition(payload)
self._arguments_scheme = None
self._usage = (self._body.meta.get('usage') or
self._body.meta.get('Usage') or
MethodUsages.Runtime)
if (self._body.name.startswith('#')
or self._body.name.startswith('*')):
raise ValueError(
'Import of special yaql functions is forbidden')
else:
payload = payload or {}
self._body = macros.MethodBlock(payload.get('Body') or [], name)
self._usage = payload.get('Usage') or MethodUsages.Runtime
arguments_scheme = payload.get('Arguments') or []
if isinstance(arguments_scheme, types.DictionaryType):
arguments_scheme = [{key: value} for key, value in
arguments_scheme.iteritems()]
self._arguments_scheme = collections.OrderedDict()
for record in arguments_scheme:
if (not isinstance(record, types.DictionaryType)
or len(record) > 1):
raise ValueError()
name = record.keys()[0]
self._arguments_scheme[name] = typespec.ArgumentSpec(
record[name], self.murano_class)
self._yaql_function_definition = \
yaql_integration.build_wrapper_function_definition(self)
@property
def name(self):
return self._name
@property
def murano_class(self):
return self._murano_class
@property
def arguments_scheme(self):
return self._arguments_scheme
@property
def yaql_function_definition(self):
return self._yaql_function_definition
@property
def usage(self):
return self._usage
@usage.setter
def usage(self, value):
self._usage = value
@property
def body(self):
return self._body
def __repr__(self):
return 'MuranoMethod({0}::{1})'.format(
self.murano_class.name, self.name)
def invoke(self, executor, this, args, kwargs, context=None,
skip_stub=False):
if not self.murano_class.is_compatible(this):
raise Exception("'this' must be of compatible type")
if isinstance(this, dsl.MuranoObjectInterface):
this = this.object
return executor.invoke_method(
self, this.cast(self.murano_class),
context, args, kwargs, skip_stub)