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# 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.
from toscaparser.common.exception import ExceptionCollector
from toscaparser.common.exception import UnknownFieldError
from toscaparser.elements.statefulentitytype import StatefulEntityType
class RelationshipType(StatefulEntityType):
'''TOSCA built-in relationship type.'''
SECTIONS = (DERIVED_FROM, VALID_TARGET_TYPES, INTERFACES,
ATTRIBUTES, PROPERTIES, DESCRIPTION, VERSION,
CREDENTIAL) = ('derived_from', 'valid_target_types',
'interfaces', 'attributes', 'properties',
'description', 'version', 'credential')
def __init__(self, type, capability_name=None, custom_def=None):
super(RelationshipType, self).__init__(type, self.RELATIONSHIP_PREFIX,
custom_def)
self.capability_name = capability_name
self.custom_def = custom_def
self._validate_keys()
@property
def parent_type(self):
'''Return a relationship this reletionship is derived from.'''
prel = self.derived_from(self.defs)
if prel:
return RelationshipType(prel, custom_def=self.custom_def)
@property
def interfaces(self):
interfaces = self.get_value(self.INTERFACES)
if self.parent_type is not None:
if self.parent_type.interfaces is not None:
import copy
parent_interfaces = copy.deepcopy(self.parent_type.interfaces)
if parent_interfaces:
if interfaces:
parent_interfaces.update(interfaces)
interfaces = parent_interfaces
return interfaces
@property
def valid_target_types(self):
return self.entity_value(self.defs, 'valid_target_types')
def _validate_keys(self):
for key in self.defs.keys():
if key not in self.SECTIONS:
ExceptionCollector.appendException(
UnknownFieldError(what='Relationshiptype "%s"' % self.type,
field=key))
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