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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.elements.statefulentitytype import StatefulEntityType
class PolicyType(StatefulEntityType):
'''TOSCA built-in policies type.'''
def __init__(self, ptype, custom_def=None):
super(PolicyType, self).__init__(ptype, self.POLICY_PREFIX,
custom_def)
self.type = ptype
self.properties = None
if self.PROPERTIES in self.defs:
self.properties = self.defs[self.PROPERTIES]
self.parent_policies = self._get_parent_policies()
def _get_parent_policies(self):
policies = {}
parent_policy = self.parent_type
if parent_policy:
while parent_policy != 'tosca.policies.Root':
policies[parent_policy] = self.TOSCA_DEF[parent_policy]
parent_policy = policies[parent_policy]['derived_from']
return policies
@property
def parent_type(self):
'''Return a policy this policy is derived from.'''
return self.derived_from(self.defs)
def get_policy(self, name):
'''Return the definition of a policy field by name.'''
if name in self.defs:
return self.defs[name]
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