ouczbs/anki-sync-server
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Fix long media sync times on AnkiDroid

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Based on PR #44 by Johannes Schirm <https://github.com/Marth68>.
The code is pretty much the same, but with usn used instead of
mtime for determining which media files have changed since last
sync.

Relevant excerpt from #44:
> The server was always sending metadata for all files in the
> collection as a response to the mediaChanges operation. Because
> AnkiDroid then calculates checksums for all these files (just to
> notice that they actually haven't changed), it took larger
> collections very long to sync after every media change. With this
> fix, only the number of files indicated by usn - lastUsn (and
> mtime) are considered for each sync.

Fixes #26, closes #44.
This commit is contained in:
flan 2019-12-30 02:21:42 +01:00
parent 10f47611bf
commit e8f274ee84
1 changed files with 3 additions and 3 deletions
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6
ankisyncd/sync_app.py
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@ -318,11 +318,11 @@ class SyncMediaHandler:
def mediaChanges(self, lastUsn): def mediaChanges(self, lastUsn):
result = [] result = []
usn = self.col.media.lastUsn() server_lastUsn = self.col.media.lastUsn()
fname = csum = None fname = csum = None
if lastUsn < usn or lastUsn == 0: if lastUsn < server_lastUsn or lastUsn == 0:
for fname,usn,csum, in self.col.media.db.execute("select fname,usn,csum from media"): for fname,usn,csum, in self.col.media.db.execute("select fname,usn,csum from media order by usn desc limit ?", server_lastUsn - lastUsn):
result.append([fname, usn, csum]) result.append([fname, usn, csum])
return {'data': result, 'err': ''} return {'data': result, 'err': ''}