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Breaking change: Add ScanSchedule, allows interval and cron based configurations.

Browse source 
See https://pkg.go.dev/github.com/robfig/cron#hdr-CRON_Expression_Format for expression syntax.

`ScanInterval` will still work for the time being. The only situation it does not work is when you want to disable periodic scanning by setting `ScanInterval=0`. If you want to disable it, please set `ScanSchedule=""`

Closes #1085
This commit is contained in:
Deluan 2021-05-06 17:56:10 -04:00
parent 1d6aa70033
commit f8dbc41b6d
9 changed files with 164 additions and 30 deletions
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39
cmd/root.go
View file

@ -56,12 +56,13 @@ func runNavidrome() {
g.Add(startServer())
g.Add(startSignaler())
g.Add(startScheduler())
interval := conf.Server.ScanInterval
if interval != 0 {
g.Add(startPeriodicScan(interval))
schedule := conf.Server.ScanSchedule
if schedule != "" {
go schedulePeriodicScan(schedule)
} else {
log.Warn("Periodic scan is DISABLED", "interval", interval)
log.Warn("Periodic scan is DISABLED", "schedule", schedule)
}
if err := g.Run(); err != nil {
@ -115,22 +116,40 @@ func startSignaler() (func() error, func(err error)) {
}
}
func startPeriodicScan(interval time.Duration) (func() error, func(err error)) {
log.Info("Starting scanner", "interval", interval.String())
func schedulePeriodicScan(schedule string) {
time.Sleep(2 * time.Second) // Wait 2 seconds before the first scan
scanner := GetScanner()
scheduler := GetScheduler()
log.Info("Executing initial scan")
if err := scanner.RescanAll(context.Background(), false); err != nil {
log.Error("Error executing initial scan", err)
}
log.Info("Scheduling periodic scan", "schedule", schedule)
err := scheduler.Add(schedule, func() {
_ = scanner.RescanAll(context.Background(), false)
})
if err != nil {
log.Error("Error scheduling periodic scan", err)
}
}
func startScheduler() (func() error, func(err error)) {
log.Info("Starting scheduler")
scheduler := GetScheduler()
ctx, cancel := context.WithCancel(context.Background())
return func() error {
time.Sleep(2 * time.Second) // Wait 2 seconds before the first scan
scanner.Run(ctx, interval)
scheduler.Run(ctx)
return nil
}, func(err error) {
cancel()
if err != nil {
log.Error("Shutting down Scanner due to error", err)
log.Error("Shutting down Scheduler due to error", err)
} else {
log.Info("Shutting down Scanner")
log.Info("Shutting down Scheduler")
}
}
}