open-webui/backend/open_webui/socket
Claude eedd227fbf
fix(stream): cross-emitter seq monotonicity, remove dead truncate, louder errors
Critical: the seq counter was emitter-local and reset to 0 whenever a
new emitter was created for the same message_id (crash-retry,
continuation, etc.). The client's dedupe guard drops any frame with
seq <= lastSeq, so a second emitter starting at 1 after the first hit
120 meant every live frame from the retry was silently dropped AND
the replay filter (seq > after_seq) excluded them too. Exactly the
failure scenarios this feature is for.

Fix: seed the counter from the log's existing max seq on emitter
construction via a new _stream_log_max_seq (XREVRANGE + COUNT 1 —
cheap tail read). Retries now continue the sequence instead of
colliding with it.

Warning: _stream_log_truncate became dead code after the switch to
TTL-shortening at done. Removed — if destructive reset is ever
needed again it can come back with a specific call site.

Suggestion: _stream_log_append / _stream_log_read / done-TTL-shorten
upgraded from log.debug to log.warning. Silent Redis failures in
debug-level were effectively invisible in prod; warnings surface the
outage at the right severity without being noisy when Redis is
healthy (these paths only log on exceptions).
2026-04-14 22:16:12 +00:00
..
main.py fix(stream): cross-emitter seq monotonicity, remove dead truncate, louder errors 2026-04-14 22:16:12 +00:00
utils.py refac 2026-03-22 05:48:05 -05:00