66 lines
2.3 KiB
Python
66 lines
2.3 KiB
Python
# All Rights Reserved.
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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 os
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from oslo_serialization import jsonutils
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def _resolve_ref(ref, base_path):
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file_path, _, json_path = ref.partition('#')
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if json_path:
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raise NotImplementedError('JSON refs with JSON path after the "#" is '
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'not yet supported')
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path = os.path.join(base_path, file_path)
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# binary mode is needed due to bug/1515231
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with open(path, 'r+b') as f:
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ref_value = jsonutils.load(f)
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base_path = os.path.dirname(path)
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res = resolve_refs(ref_value, base_path)
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return res
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def resolve_refs(obj_with_refs, base_path):
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if isinstance(obj_with_refs, list):
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for i, item in enumerate(obj_with_refs):
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obj_with_refs[i] = resolve_refs(item, base_path)
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elif isinstance(obj_with_refs, dict):
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if '$ref' in obj_with_refs.keys():
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ref = obj_with_refs.pop('$ref')
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resolved_ref = _resolve_ref(ref, base_path)
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# the rest of the ref dict contains overrides for the ref. Resolve
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# refs in the overrides then apply those overrides recursively
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# here.
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resolved_overrides = resolve_refs(obj_with_refs, base_path)
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_update_dict_recursively(resolved_ref, resolved_overrides)
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return resolved_ref
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else:
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for key, value in obj_with_refs.items():
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obj_with_refs[key] = resolve_refs(value, base_path)
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else:
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# scalar, nothing to do
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pass
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return obj_with_refs
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def _update_dict_recursively(d, update):
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"""Update dict d recursively with data from dict update"""
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for k, v in update.items():
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if k in d and isinstance(d[k], dict) and isinstance(v, dict):
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_update_dict_recursively(d[k], v)
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else:
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d[k] = v
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