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core: use immutable mode in dataset helper

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Dima Gerasimov 2020-06-20 09:59:38 +01:00 • committed by karlicoss
parent 4fc33a9ed2
commit 49d25a75ae
1 changed files with 4 additions and 1 deletions
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5
my/core/dataset.py
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@ -4,6 +4,9 @@ from pathlib import Path
def connect_readonly(db: Path):
import dataset # type: ignore
# see https://github.com/pudo/dataset/issues/136#issuecomment-128693122
# todo not sure if mode=ro has any benefit, but it doesn't work on read-only filesystems
# maybe it should autodetect readonly filesystems and apply this? not sure
import sqlite3
creator = lambda: sqlite3.connect(f'file:{db}?mode=ro', uri=True)
# https://www.sqlite.org/draft/uri.html#uriimmutable
creator = lambda: sqlite3.connect(f'file:{db}?immutable=1', uri=True)
return dataset.connect('sqlite:///', engine_kwargs={'creator': creator})