murano/murano/dsl/results_serializer.py

118 lines
4.1 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 types
import murano.dsl.murano_object as murano_object
class ObjRef(object):
def __init__(self, obj):
self.ref_obj = obj
def _serialize_tree(root_object, designer_attributes):
serialized_objects = set()
tree = _pass1_serialize(
root_object, None, serialized_objects, designer_attributes)
_pass2_serialize(tree, serialized_objects)
return tree, serialized_objects
def serialize(root_object, executor):
if root_object is None:
tree = None
tree_copy = None
attributes = []
else:
tree, serialized_objects = _serialize_tree(
root_object, executor.object_store.designer_attributes)
tree_copy, _ = _serialize_tree(root_object, None)
attributes = executor.attribute_store.serialize(serialized_objects)
return {
'Objects': tree,
'ObjectsCopy': tree_copy,
'Attributes': attributes
}
def _cmp_objects(obj1, obj2):
if obj1 is None and obj2 is None:
return True
if obj1 is None or obj2 is None:
return False
return obj1.object_id == obj2.object_id
def _pass1_serialize(value, parent, serialized_objects,
designer_attributes_getter):
if isinstance(value, (types.StringTypes, types.IntType, types.FloatType,
types.BooleanType, types.NoneType)):
return value
elif isinstance(value, murano_object.MuranoObject):
if not _cmp_objects(value.parent, parent) \
or value.object_id in serialized_objects:
return ObjRef(value)
else:
result = value.to_dictionary()
if designer_attributes_getter is not None:
result['?'].update(designer_attributes_getter(value.object_id))
serialized_objects.add(value.object_id)
return _pass1_serialize(
result, value, serialized_objects, designer_attributes_getter)
elif isinstance(value, types.DictionaryType):
result = {}
for d_key, d_value in value.iteritems():
result_key = str(d_key)
result[result_key] = _pass1_serialize(
d_value, parent, serialized_objects,
designer_attributes_getter)
return result
elif isinstance(value, types.ListType):
return [_pass1_serialize(t, parent, serialized_objects,
designer_attributes_getter) for t in value]
elif isinstance(value, types.TupleType):
return _pass1_serialize(
list(value), parent, serialized_objects,
designer_attributes_getter)
else:
raise ValueError()
def _pass2_serialize(value, serialized_objects):
if isinstance(value, types.DictionaryType):
for d_key, d_value in value.iteritems():
if isinstance(d_value, ObjRef):
if d_value.ref_obj.object_id in serialized_objects:
value[d_key] = d_value.ref_obj.object_id
else:
value[d_key] = None
else:
_pass2_serialize(d_value, serialized_objects)
elif isinstance(value, types.ListType):
index = 0
while index < len(value):
item = value[index]
if isinstance(item, ObjRef):
if item.ref_obj.object_id in serialized_objects:
value[index] = item.ref_obj.object_id
else:
value.pop(index)
index -= 1
else:
_pass2_serialize(item, serialized_objects)
index += 1