51 lines
1.5 KiB
Python
51 lines
1.5 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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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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from heat.common.template_format import yaml
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SECTIONS = (PARAMETERS, RESOURCE_REGISTRY) = \
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('parameters', 'resource_registry')
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def parse(env_str):
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'''
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Takes a string and returns a dict containing the parsed structure.
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This includes determination of whether the string is using the
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JSON or YAML format.
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'''
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try:
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env = yaml.safe_load(env_str)
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except (yaml.scanner.ScannerError, yaml.parser.ParserError) as e:
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raise ValueError(e)
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else:
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if env is None:
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env = {}
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for param in env:
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if param not in SECTIONS:
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raise ValueError('environment has wrong section "%s"' % param)
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return env
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def default_for_missing(env):
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'''
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Checks a parsed environment for missing sections.
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'''
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for param in SECTIONS:
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if param not in env:
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env[param] = {}
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