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In a multi-pod deployment every pod runs the scheduled-task timers, so
periodic library-mutating tasks (library refresh, people/chapter refresh,
audio normalization, media-segment and keyframe extraction, collection and
user-data cleanup, database optimization) fire concurrently against the shared
database and library, duplicating work and racing each other.
Add an IScanLeaderLease abstraction that elects a single scan leader via a
Redis TTL lease keyed on the pod identity, mirroring the existing transcode
lease machinery. RedisScanLeaderLease acquires or renews the lease with an
atomic Lua script and fails safe by treating the pod as leader whenever Redis
is unreachable, so scans never stall. NullScanLeaderLease preserves the
single-instance behavior when election is disabled or no Redis connection is
configured.
Gate only the timer-driven path in ScheduledTaskWorker: when election is
enabled and a task key is in the gated set, a non-leader re-arms its trigger
and skips enqueueing. Manual and API-triggered runs bypass this path and still
run on any pod. Wiring is additive and the new worker constructor parameters
are optional, so existing behavior is unchanged when election is off.
Signed-off-by: Ben Vincent <ben@unkin.net>
Follow TrickPlay example of running other background ffmpeg tasks as ProcessPriorityClass.BelowNormal:
- Keyframe extraction
- Media info probing during library scans
- Audio normalization
- Image extraction
Wait for ffmpeg to exit on Windows before we try deleting the concat file
Original-merge: 346f36bc09eb6989d7cd6439175e46b699162cbb
Merged-by: Bond-009 <bond.009@outlook.com>
Backported-by: Bond_009 <bond.009@outlook.com>
Log album name and id in normalization task
Original-merge: c9b6ebd94fd6e91ea8da2931c7604350343da5bf
Merged-by: Bond-009 <bond.009@outlook.com>
Backported-by: Joshua M. Boniface <joshua@boniface.me>
Audio normalization: parse ffmpeg output line by line
Original-merge: d2be2ee480a44d3ed266d4632c3f38439b0dfaf5
Merged-by: joshuaboniface <joshua@boniface.me>
Backported-by: Joshua M. Boniface <joshua@boniface.me>
* Move calculation of LUFS to a scheduled task as it's pretty slow
* Correctly calculate album LUFS
* Don't try to convert replaygain tags to LUFS values
unkinben
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