79 lines
2.9 KiB
Python
79 lines
2.9 KiB
Python
# Copyright (c) 2014 Mirantis, Inc.
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#
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# 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 sys
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import weakref
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from murano.common import utils
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from murano.dsl import dsl_types
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from murano.dsl import exceptions
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from murano.dsl import helpers
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from murano.dsl import meta
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from murano.dsl import typespec
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class MuranoProperty(dsl_types.MuranoProperty, typespec.Spec,
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meta.MetaProvider):
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def __init__(self, declaring_type, property_name, declaration):
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super(MuranoProperty, self).__init__(declaration, declaring_type)
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self._property_name = property_name
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self._declaring_type = weakref.ref(declaring_type)
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self._usage = declaration.get('Usage') or dsl_types.PropertyUsages.In
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if self._usage not in dsl_types.PropertyUsages.All:
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raise exceptions.DslSyntaxError(
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'Unknown usage {0}. Must be one of ({1})'.format(
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self._usage, ', '.join(dsl_types.PropertyUsages.All)))
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self._meta = meta.MetaData(
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declaration.get('Meta'),
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dsl_types.MetaTargets.Property, declaring_type)
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self._meta_values = None
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def transform(self, *args, **kwargs):
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try:
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return super(MuranoProperty, self).transform(*args, **kwargs)
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except exceptions.ContractViolationException as e:
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msg = u'[{0}.{1}{2}] {3}'.format(
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self.declaring_type.name, self.name, e.path, str(e))
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utils.reraise(exceptions.ContractViolationException,
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exceptions.ContractViolationException(msg),
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sys.exc_info()[2])
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@property
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def name(self):
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return self._property_name
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@property
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def usage(self):
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return self._usage
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def get_meta(self, context):
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def meta_producer(cls):
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prop = cls.properties.get(self.name)
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if prop is None:
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return None
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return prop._meta
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if self._meta_values is None:
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executor = helpers.get_executor()
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context = executor.create_type_context(
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self.declaring_type, caller_context=context)
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self._meta_values = meta.merge_providers(
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self.declaring_type, meta_producer, context)
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return self._meta_values
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def __repr__(self):
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return 'MuranoProperty({type}::{name})'.format(
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type=self.declaring_type.name, name=self.name)
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