48 lines
1.6 KiB
Python
48 lines
1.6 KiB
Python
# Copyright 2016-2020, Pulumi Corporation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from collections import abc
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import json
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from typing import Any
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from .. import _types
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def _to_json_serializable_obj(obj: Any) -> Any:
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"""
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Convert `obj` into an object suitable for JSON serialization, converting input types into dicts.
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"""
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# Exclude some built-in types that are instances of Sequence that we don't want to treat as sequences here.
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# From: https://github.com/python/cpython/blob/master/Lib/_collections_abc.py
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if isinstance(obj, abc.Sequence) and not isinstance(
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obj, (tuple, str, range, memoryview, bytes, bytearray)
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):
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return [_to_json_serializable_obj(v) for v in obj]
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if _types.is_input_type(type(obj)):
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obj = _types.input_type_to_dict(obj)
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if isinstance(obj, abc.Mapping):
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return {k: _to_json_serializable_obj(v) for k, v in obj.items()}
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return obj
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def to_json(obj: Any) -> str:
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"""
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Serialize `obj` to a JSON formatted `str`.
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"""
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serializable_obj = _to_json_serializable_obj(obj)
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return json.dumps(serializable_obj)
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