0a1568ba38
Change the file structure to make appropriate for stand alone parser. Change-Id: I6d5259b61b1cd82949262fee4930fa66703ad036
96 lines
3.3 KiB
Python
96 lines
3.3 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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import logging
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import os
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import toscaparser.utils.yamlparser
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log = logging.getLogger('tosca')
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class EntityType(object):
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'''Base class for TOSCA elements.'''
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SECTIONS = (DERIVED_FROM, PROPERTIES, ATTRIBUTES, REQUIREMENTS,
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INTERFACES, CAPABILITIES, TYPE, ARTIFACTS) = \
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('derived_from', 'properties', 'attributes', 'requirements',
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'interfaces', 'capabilities', 'type', 'artifacts')
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'''TOSCA definition file.'''
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TOSCA_DEF_FILE = os.path.join(
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os.path.dirname(os.path.abspath(__file__)),
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"TOSCA_definition_1_0.yaml")
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loader = toscaparser.utils.yamlparser.load_yaml
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TOSCA_DEF = loader(TOSCA_DEF_FILE)
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RELATIONSHIP_TYPE = (DEPENDSON, HOSTEDON, CONNECTSTO, ATTACHESTO,
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LINKSTO, BINDSTO) = \
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('tosca.relationships.DependsOn',
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'tosca.relationships.HostedOn',
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'tosca.relationships.ConnectsTo',
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'tosca.relationships.AttachesTo',
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'tosca.relationships.network.LinksTo',
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'tosca.relationships.network.BindsTo')
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NODE_PREFIX = 'tosca.nodes.'
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RELATIONSHIP_PREFIX = 'tosca.relationships.'
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CAPABILITY_PREFIX = 'tosca.capabilities.'
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INTERFACE_PREFIX = 'tosca.interfaces.'
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ARTIFACT_PREFIX = 'tosca.artifacts.'
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# currently the data types are defined only for network
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# but may have changes in the future.
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DATATYPE_PREFIX = 'tosca.datatypes.network.'
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TOSCA = 'tosca'
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def derived_from(self, defs):
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'''Return a type this type is derived from.'''
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return self.entity_value(defs, 'derived_from')
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def is_derived_from(self, type_str):
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'''Check if object inherits from the given type.
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Returns true if this object is derived from 'type_str'.
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False otherwise.
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'''
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if not self.type:
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return False
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elif self.type == type_str:
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return True
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elif self.parent_type:
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return self.parent_type.is_derived_from(type_str)
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else:
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return False
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def entity_value(self, defs, key):
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if key in defs:
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return defs[key]
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def get_value(self, ndtype, defs=None, parent=None):
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value = None
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if defs is None:
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defs = self.defs
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if ndtype in defs:
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value = defs[ndtype]
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if parent and not value:
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p = self.parent_type
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while value is None:
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# check parent node
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if not p:
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break
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if p and p.type == 'tosca.nodes.Root':
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break
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value = p.get_value(ndtype)
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p = p.parent_type
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return value
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