706f00001f
1. Add new entry point /experimental alongside v1. 2. Capsule will use this entrypoint for quickly development. Part of blueprint introduce-compose Change-Id: I592608aff001c53c76ee23681566156fa1aa71ed Signed-off-by: Kevin Zhao <kevin.zhao@arm.com>
64 lines
2.2 KiB
Python
64 lines
2.2 KiB
Python
# Copyright 2017 Arm Limited.
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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 json
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import yaml
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from zunclient.i18n import _
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yaml_loader = yaml.SafeLoader
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if hasattr(yaml, 'CSafeDumper'):
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yaml_dumper = yaml.CSafeDumper
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else:
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yaml_dumper = yaml.SafeDumper
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def _construct_yaml_str(self, node):
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# Override the default string handling function
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# to always return unicode objects
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return self.construct_scalar(node)
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yaml_loader.add_constructor(u'tag:yaml.org,2002:str', _construct_yaml_str)
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# Unquoted dates like 2013-05-23 in yaml files get loaded as objects of type
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# datetime.data which causes problems in API layer when being processed by
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# openstack.common.jsonutils. Therefore, make unicode string out of timestamps
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# until jsonutils can handle dates.
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yaml_loader.add_constructor(u'tag:yaml.org,2002:timestamp',
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_construct_yaml_str)
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def parse(tmpl_str):
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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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# strip any whitespace before the check
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tmpl_str = tmpl_str.strip()
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if tmpl_str.startswith('{'):
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tpl = json.loads(tmpl_str)
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else:
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try:
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tpl = yaml.safe_load(tmpl_str)
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except yaml.YAMLError as yea:
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raise ValueError(yea)
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else:
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if tpl is None:
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tpl = {}
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# Looking for supported version keys in the loaded template
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if not ('CapsuleTemplateFormatVersion' in tpl
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or 'capsule_template_version' in tpl):
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raise ValueError(_("Template format version not found."))
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return tpl
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