130 lines
5.2 KiB
Python
130 lines
5.2 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from toscaparser.common.exception import ExceptionCollector
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from toscaparser.common.exception import InvalidTypeError
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from toscaparser.common.exception import UnknownFieldError
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from toscaparser.elements.statefulentitytype import StatefulEntityType
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from toscaparser.utils.validateutils import TOSCAVersionProperty
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class PolicyType(StatefulEntityType):
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'''TOSCA built-in policies type.'''
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SECTIONS = (DERIVED_FROM, METADATA, PROPERTIES, VERSION, DESCRIPTION,
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TARGETS, TRIGGERS, TYPE, RESERVATION) = \
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('derived_from', 'metadata', 'properties', 'version',
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'description', 'targets', 'triggers', 'type', 'reservation')
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def __init__(self, ptype, custom_def=None):
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super(PolicyType, self).__init__(ptype, self.POLICY_PREFIX,
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custom_def)
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self.type = ptype
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self.custom_def = custom_def
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self._validate_keys()
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self.meta_data = None
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if self.METADATA in self.defs:
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self.meta_data = self.defs[self.METADATA]
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self._validate_metadata(self.meta_data)
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self.properties = None
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if self.PROPERTIES in self.defs:
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self.properties = self.defs[self.PROPERTIES]
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self.parent_policies = self._get_parent_policies()
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self.policy_version = None
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if self.VERSION in self.defs:
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self.policy_version = TOSCAVersionProperty(
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self.defs[self.VERSION]).get_version()
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self.policy_description = self.defs[self.DESCRIPTION] \
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if self.DESCRIPTION in self.defs else None
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self.targets_list = None
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if self.TARGETS in self.defs:
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self.targets_list = self.defs[self.TARGETS]
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self._validate_targets(self.targets_list, custom_def)
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self.reservation = None
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if self.RESERVATION in self.defs:
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self.reservation = self.defs[self.RESERVATION]
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def _get_parent_policies(self):
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policies = {}
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parent_policy = self.parent_type.type if self.parent_type else None
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if parent_policy:
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while parent_policy != 'tosca.policies.Root':
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if parent_policy in self.TOSCA_DEF:
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policies[parent_policy] = self.TOSCA_DEF[parent_policy]
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parent_policy = policies[parent_policy]['derived_from']
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elif self.custom_def and parent_policy in self.custom_def:
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policies[parent_policy] = self.custom_def[parent_policy]
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parent_policy = policies[parent_policy]['derived_from']
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return policies
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@property
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def parent_type(self):
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'''Return a policy statefulentity of this node is derived from.'''
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if not hasattr(self, 'defs'):
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return None
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ppolicy_entity = self.derived_from(self.defs)
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if ppolicy_entity:
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return PolicyType(ppolicy_entity, self.custom_def)
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def get_policy(self, name):
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'''Return the definition of a policy field by name.'''
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if name in self.defs:
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return self.defs[name]
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@property
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def targets(self):
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'''Return targets.'''
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return self.targets_list
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@property
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def description(self):
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return self.policy_description
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@property
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def version(self):
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return self.policy_version
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def _validate_keys(self):
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for key in self.defs.keys():
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if key not in self.SECTIONS:
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ExceptionCollector.appendException(
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UnknownFieldError(what='Policy "%s"' % self.type,
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field=key))
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def _validate_targets(self, targets_list, custom_def):
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for nodetype in targets_list:
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if nodetype not in custom_def:
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ExceptionCollector.appendException(
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InvalidTypeError(what='"%s" defined in targets for '
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'policy "%s"' % (nodetype, self.type)))
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def _validate_metadata(self, meta_data):
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if not meta_data.get('type') in ['map', 'tosca:map']:
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ExceptionCollector.appendException(
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InvalidTypeError(what='"%s" defined in policy for '
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'metadata' % (meta_data.get('type'))))
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for entry_schema, entry_schema_type in meta_data.items():
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if isinstance(entry_schema_type, dict) and not \
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entry_schema_type.get('type') == 'string':
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ExceptionCollector.appendException(
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InvalidTypeError(what='"%s" defined in policy for '
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'metadata "%s"'
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% (entry_schema_type.get('type'),
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entry_schema)))
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