deb-murano/muranoapi/dsl/class_loader.py
Serg Melikyan 06856caecf Add MuranoPL Testing Framework
Implements simple plugin for nosetests and gives
ability to write tests for MuranoPL functions
and features on MuranoPL itself.

Change-Id: I899d5d89f391167ff34fa35777e85125bad431bf
2014-04-03 19:12:39 +04:00

114 lines
4.2 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 inspect
import types
import yaql
import yaql.context
import muranoapi.dsl.exceptions as exceptions
import muranoapi.dsl.helpers as helpers
import muranoapi.dsl.murano_class as murano_class
import muranoapi.dsl.murano_object as murano_object
import muranoapi.dsl.namespace_resolver as namespace_resolver
import muranoapi.dsl.principal_objects as principal_objects
import muranoapi.dsl.typespec as typespec
class MuranoClassLoader(object):
def __init__(self):
self._loaded_types = {}
principal_objects.register(self)
def get_class(self, name, create_missing=False):
if name in self._loaded_types:
return self._loaded_types[name]
data = self.load_definition(name)
if data is None:
if create_missing:
data = {'Name': name}
else:
raise exceptions.NoClassFound(name)
namespaces = data.get('Namespaces', {})
ns_resolver = namespace_resolver.NamespaceResolver(namespaces)
class_parents = data.get('Extends')
if class_parents:
if not isinstance(class_parents, types.ListType):
class_parents = [class_parents]
for i, parent_name in enumerate(class_parents):
full_name = ns_resolver.resolve_name(parent_name)
class_parents[i] = self.get_class(full_name)
type_obj = murano_class.MuranoClass(self, ns_resolver, name,
class_parents)
properties = data.get('Properties', {})
for property_name, property_spec in properties.iteritems():
spec = typespec.PropertySpec(property_spec, ns_resolver)
type_obj.add_property(property_name, spec)
for method_name, payload in data.get('Workflow', {}).iteritems():
type_obj.add_method(method_name, payload)
self._loaded_types[name] = type_obj
return type_obj
def load_definition(self, name):
raise NotImplementedError()
def create_root_context(self):
return yaql.create_context(True)
def create_local_context(self, parent_context, murano_class):
return yaql.context.Context(parent_context=parent_context)
def _fix_parameters(self, kwargs):
result = {}
for key, value in kwargs.iteritems():
if key in ('class', 'for', 'from', 'is', 'lambda', 'as',
'exec', 'assert', 'and', 'or', 'break', 'def',
'del', 'try', 'while', 'yield', 'raise', 'while',
'pass', 'return', 'not', 'print', 'in', 'import',
'global', 'if', 'finally', 'except', 'else', 'elif',
'continue', 'yield'):
key = '_' + key
result[key] = value
return result
def import_class(self, cls, name=None):
if not name:
if inspect.isclass(cls):
name = cls._murano_class_name
else:
name = cls.__class__._murano_class_name
m_class = self.get_class(name, create_missing=True)
if inspect.isclass(cls):
if issubclass(cls, murano_object.MuranoObject):
m_class.object_class = cls
else:
mpc_name = 'mpc' + helpers.generate_id()
bases = (cls, murano_object.MuranoObject)
m_class.object_class = type(mpc_name, bases, {})
for item in dir(cls):
method = getattr(cls, item)
if ((inspect.isfunction(method) or inspect.ismethod(method)) and
not item.startswith('_')):
m_class.add_method(item, method)