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drop caches if certain volflags change (#120)

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dhash would prevent a new noidx value from taking effect
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ed 2024-11-26 19:25:47 +00:00
parent 127f414e9c
commit 2f83c6c7d1
1 changed files with 14 additions and 4 deletions
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18
copyparty/up2k.py
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@ -88,6 +88,9 @@ if TYPE_CHECKING:
zsg = "avif,avifs,bmp,gif,heic,heics,heif,heifs,ico,j2p,j2k,jp2,jpeg,jpg,jpx,png,tga,tif,tiff,webp"
CV_EXTS = set(zsg.split(","))
zsg = "nohash noidx xdev xvol"
VF_AFFECTS_INDEXING = set(zsg.split(" "))
SBUSY = "cannot receive uploads right now;\nserver busy with %s.\nPlease wait; the client will retry..."
@ -1232,10 +1235,17 @@ class Up2k(object):
def _verify_db_cache(self, cur: "sqlite3.Cursor", vpath: str) -> None:
# check if list of intersecting volumes changed since last use; drop caches if so
prefix = (vpath + "/").lstrip("/")
zsl = [x for x in self.vfs.all_vols if x.startswith(prefix)]
zsl = [x[len(prefix) :] for x in zsl]
zsl.sort()
zb = hashlib.sha1("\n".join(zsl).encode("utf-8", "replace")).digest()
vps = [x for x in self.vfs.all_vols if x.startswith(prefix)]
vps.sort()
seed = [x[len(prefix) :] for x in vps]
# also consider volflags which affect indexing
for vp in vps:
vf = self.vfs.all_vols[vp].flags.items()
vf = {k: v for k, v in vf if k in VF_AFFECTS_INDEXING}
seed.append(str(vf))
zb = hashlib.sha1("\n".join(seed).encode("utf-8", "replace")).digest()
vcfg = ub64enc(zb[:18]).decode("ascii")
c = cur.execute("select v from kv where k = 'volcfg'")