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- # Copyright 2022 The Matrix.org Foundation C.I.C.
- #
- # Licensed under the Apache License, Version 2.0 (the "License");
- # you may not use this file except in compliance with the License.
- # You may obtain a copy of the License at
- #
- # http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
-
- import os
- import sys
- from hashlib import blake2b
-
- import synapse
- from synapse.synapse_rust import get_rust_file_digest
-
-
- def check_rust_lib_up_to_date() -> None:
- """For editable installs check if the rust library is outdated and needs to
- be rebuilt.
- """
-
- if not _dist_is_editable():
- return
-
- synapse_dir = os.path.dirname(synapse.__file__)
- synapse_root = os.path.abspath(os.path.join(synapse_dir, ".."))
-
- # Double check we've not gone into site-packages...
- if os.path.basename(synapse_root) == "site-packages":
- return
-
- # ... and it looks like the root of a python project.
- if not os.path.exists("pyproject.toml"):
- return
-
- # Get the hash of all Rust source files
- hash = _hash_rust_files_in_directory(os.path.join(synapse_root, "rust", "src"))
-
- if hash != get_rust_file_digest():
- raise Exception("Rust module outdated. Please rebuild using `poetry install`")
-
-
- def _hash_rust_files_in_directory(directory: str) -> str:
- """Get the hash of all files in a directory (recursively)"""
-
- directory = os.path.abspath(directory)
-
- paths = []
-
- dirs = [directory]
- while dirs:
- dir = dirs.pop()
- with os.scandir(dir) as d:
- for entry in d:
- if entry.is_dir():
- dirs.append(entry.path)
- else:
- paths.append(entry.path)
-
- # We sort to make sure that we get a consistent and well-defined ordering.
- paths.sort()
-
- hasher = blake2b()
-
- for path in paths:
- with open(os.path.join(directory, path), "rb") as f:
- hasher.update(f.read())
-
- return hasher.hexdigest()
-
-
- def _dist_is_editable() -> bool:
- """Is distribution an editable install?"""
- for path_item in sys.path:
- egg_link = os.path.join(path_item, "matrix-synapse.egg-link")
- if os.path.isfile(egg_link):
- return True
- return False
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