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fix(scanner): resolve data race on conf.Server access in getScanner

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Captured DevExternalScanner config value in the controller struct at
construction time instead of reading the global conf.Server pointer in
getScanner(). The background goroutine spawned by ScanFolders() was
reading conf.Server.DevExternalScanner concurrently with test cleanup
reassigning the conf.Server pointer, causing a data race detected by
the race detector in the E2E test suite.
This commit is contained in:
Deluan 2026-02-09 16:42:05 -05:00
parent ed79a8897b
commit fd09ca103f
1 changed files with 20 additions and 18 deletions
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38
scanner/controller.go
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@ -29,21 +29,22 @@ var (
func New(rootCtx context.Context, ds model.DataStore, cw artwork.CacheWarmer, broker events.Broker,
pls core.Playlists, m metrics.Metrics) model.Scanner {
c := &controller{
rootCtx: rootCtx,
ds: ds,
cw: cw,
broker: broker,
pls: pls,
metrics: m,
rootCtx: rootCtx,
ds: ds,
cw: cw,
broker: broker,
pls: pls,
metrics: m,
devExternalScanner: conf.Server.DevExternalScanner,
}
if !conf.Server.DevExternalScanner {
if !c.devExternalScanner {
c.limiter = P(rate.Sometimes{Interval: conf.Server.DevActivityPanelUpdateRate})
}
return c
}
func (s *controller) getScanner() scanner {
if conf.Server.DevExternalScanner {
if s.devExternalScanner {
return &scannerExternal{}
}
return &scannerImpl{ds: s.ds, cw: s.cw, pls: s.pls}
@ -92,16 +93,17 @@ type scanner interface {
}
type controller struct {
rootCtx context.Context
ds model.DataStore
cw artwork.CacheWarmer
broker events.Broker
metrics metrics.Metrics
pls core.Playlists
limiter *rate.Sometimes
count atomic.Uint32
folderCount atomic.Uint32
changesDetected bool
rootCtx context.Context
ds model.DataStore
cw artwork.CacheWarmer
broker events.Broker
metrics metrics.Metrics
pls core.Playlists
limiter *rate.Sometimes
devExternalScanner bool
count atomic.Uint32
folderCount atomic.Uint32
changesDetected bool
}
// getLastScanTime returns the most recent scan time across all libraries