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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 InvalidTypeError
from toscaparser.common.exception import UnknownFieldError
from toscaparser.elements.statefulentitytype import StatefulEntityType
from toscaparser.utils.validateutils import TOSCAVersionProperty
class PolicyType(StatefulEntityType):
'''TOSCA built-in policies type.'''
SECTIONS = (DERIVED_FROM, METADATA, PROPERTIES, VERSION, DESCRIPTION,
TARGETS, TRIGGERS, TYPE) = \
('derived_from', 'metadata', 'properties', 'version',
'description', 'targets', 'triggers', 'type')
def __init__(self, ptype, custom_def=None):
super(PolicyType, self).__init__(ptype, self.POLICY_PREFIX,
custom_def)
self.type = ptype
self.custom_def = custom_def
self._validate_keys()
self.meta_data = None
if self.METADATA in self.defs:
self.meta_data = self.defs[self.METADATA]
self._validate_metadata(self.meta_data)
self.properties = None
if self.PROPERTIES in self.defs:
self.properties = self.defs[self.PROPERTIES]
self.parent_policies = self._get_parent_policies()
self.policy_version = None
if self.VERSION in self.defs:
self.policy_version = TOSCAVersionProperty(
self.defs[self.VERSION]).get_version()
self.policy_description = self.defs[self.DESCRIPTION] \
if self.DESCRIPTION in self.defs else None
self.targets_list = None
if self.TARGETS in self.defs:
self.targets_list = self.defs[self.TARGETS]
self._validate_targets(self.targets_list, custom_def)
def _get_parent_policies(self):
policies = {}
parent_policy = self.parent_type.type if self.parent_type else None
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 statefulentity of this node is derived from.'''
if not hasattr(self, 'defs'):
return None
ppolicy_entity = self.derived_from(self.defs)
if ppolicy_entity:
return PolicyType(ppolicy_entity, self.custom_def)
def get_policy(self, name):
'''Return the definition of a policy field by name.'''
if name in self.defs:
return self.defs[name]
@property
def targets(self):
'''Return targets.'''
return self.targets_list
@property
def description(self):
return self.policy_description
@property
def version(self):
return self.policy_version
def _validate_keys(self):
for key in self.defs.keys():
if key not in self.SECTIONS:
ExceptionCollector.appendException(
UnknownFieldError(what='Policy "%s"' % self.type,
field=key))
def _validate_targets(self, targets_list, custom_def):
for nodetype in targets_list:
if nodetype not in custom_def:
ExceptionCollector.appendException(
InvalidTypeError(what='"%s" defined in targets for '
'policy "%s"' % (nodetype, self.type)))
def _validate_metadata(self, meta_data):
if not meta_data.get('type') in ['map', 'tosca:map']:
ExceptionCollector.appendException(
InvalidTypeError(what='"%s" defined in policy for '
'metadata' % (meta_data.get('type'))))
for entry_schema, entry_schema_type in meta_data.items():
if isinstance(entry_schema_type, dict) and not \
entry_schema_type.get('type') == 'string':
ExceptionCollector.appendException(
InvalidTypeError(what='"%s" defined in policy for '
'metadata "%s"'
% (entry_schema_type.get('type'),
entry_schema)))
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