50 lines
2.1 KiB
Python
50 lines
2.1 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 UnknownFieldError
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from toscaparser.elements.statefulentitytype import StatefulEntityType
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class RelationshipType(StatefulEntityType):
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'''TOSCA built-in relationship type.'''
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SECTIONS = (DERIVED_FROM, VALID_TARGET_TYPES, INTERFACES,
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ATTRIBUTES, PROPERTIES, DESCRIPTION, VERSION,
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CREDENTIAL) = ('derived_from', 'valid_target_types',
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'interfaces', 'attributes', 'properties',
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'description', 'version', 'credential')
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def __init__(self, type, capability_name=None, custom_def=None):
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super(RelationshipType, self).__init__(type, self.RELATIONSHIP_PREFIX,
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custom_def)
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self.capability_name = capability_name
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self.custom_def = custom_def
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self._validate_keys()
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@property
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def parent_type(self):
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'''Return a relationship this reletionship is derived from.'''
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prel = self.derived_from(self.defs)
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if prel:
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return RelationshipType(prel, self.custom_def)
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@property
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def valid_target_types(self):
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return self.entity_value(self.defs, 'valid_target_types')
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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='Relationshiptype "%s"' % self.type,
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field=key))
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