68 lines
2.4 KiB
Python
68 lines
2.4 KiB
Python
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#
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# Copyright (C) 2022 The Android Open Source Project
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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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import json
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import os
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_VALID_KEYS = set(("version", "domain_data"))
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class DescribeError(Exception):
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"""Parsing errors."""
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def __init__(self, tree, reason):
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super().__init__(tree, reason)
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self.tree = tree
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self.reason = reason
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def __str__(self):
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return self.reason
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def interrogate_tree(_tree_key, inner_tree, _cookie):
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"""Interrogate the inner tree."""
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query = dict(build_domains=[inner_tree.build_domains])
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os.makedirs(os.path.dirname(inner_tree.out.tree_query()), exist_ok=True)
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with open(inner_tree.out.tree_query(), 'w', encoding="iso-8859-1") as f:
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f.write(json.dumps(query))
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inner_tree.invoke([
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"describe", "--input_json",
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inner_tree.out.tree_query(base=inner_tree.out.Base.INNER),
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"--output_json",
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inner_tree.out.tree_info_file(base=inner_tree.out.Base.INNER)
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])
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try:
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with open(inner_tree.out.tree_info_file(), encoding='iso-8859-1') as f:
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info_json = json.load(f)
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except FileNotFoundError as e:
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raise DescribeError(inner_tree, "No return from interrogate.") from e
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except json.decoder.JSONDecodeError as e:
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raise DescribeError(
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inner_tree, f"Failed to parse interrogate response: {e}") from e
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if not isinstance(info_json, dict):
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raise DescribeError(inner_tree, "Malformed describe response")
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if set(info_json.keys()) - _VALID_KEYS:
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raise DescribeError(inner_tree,
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"Invalid keyname in describe response.")
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# Make sure that fields are initialized, so that we can just access them.
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if info_json.setdefault("version", 0):
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raise DescribeError(inner_tree,
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f"Invalid version: {info_json['version']}")
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info_json.setdefault("domain_data", [])
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return info_json
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