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Add caching to Secure lookup #35

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merged 3 commits into from
Jul 5, 2024
Merged

Add caching to Secure lookup #35

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f4fc920
Add caching to Secure lookup
OlafHaalstra Jul 5, 2024
895cd38
Added caching for __iter_entries, fixed linting
OlafHaalstra Jul 5, 2024
321a8ff
Removed generator caching
OlafHaalstra Jul 5, 2024
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3 changes: 3 additions & 0 deletions dissect/ntfs/secure.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
from __future__ import annotations

import io
from functools import lru_cache
from typing import BinaryIO, Iterator
from uuid import UUID

Expand Down Expand Up @@ -38,6 +39,8 @@ def __init__(self, record: MftRecord = None, sds: BinaryIO = None):
if not hasattr(self.sds, "size"):
self.sds.size = self.sds.seek(0, io.SEEK_END)

self.lookup = lru_cache(4096)(self.lookup)

def _iter_entries(self, offset: int = 0) -> Iterator[c_ntfs._SECURITY_DESCRIPTOR_HEADER]:
"""Iterate over all SDS entries, optionally starting from a specific offset.
Expand Down