sftpgo/dataprovider/scheduler.go

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package dataprovider
import (
"fmt"
"time"
"github.com/robfig/cron/v3"
"github.com/drakkan/sftpgo/v2/logger"
"github.com/drakkan/sftpgo/v2/metric"
"github.com/drakkan/sftpgo/v2/util"
)
var (
scheduler *cron.Cron
lastCachesUpdate int64
)
func stopScheduler() {
if scheduler != nil {
scheduler.Stop()
scheduler = nil
}
}
func startScheduler() error {
stopScheduler()
scheduler = cron.New()
_, err := scheduler.AddFunc("@every 30s", checkDataprovider)
if err != nil {
return fmt.Errorf("unable to schedule dataprovider availability check: %w", err)
}
if config.AutoBackup.Enabled {
spec := fmt.Sprintf("0 %v * * %v", config.AutoBackup.Hour, config.AutoBackup.DayOfWeek)
_, err = scheduler.AddFunc(spec, config.doBackup)
if err != nil {
return fmt.Errorf("unable to schedule auto backup: %w", err)
}
}
err = addScheduledCacheUpdates()
if err != nil {
return err
}
scheduler.Start()
return nil
}
func addScheduledCacheUpdates() error {
lastCachesUpdate = util.GetTimeAsMsSinceEpoch(time.Now())
_, err := scheduler.AddFunc("@every 10m", checkCacheUpdates)
if err != nil {
return fmt.Errorf("unable to schedule cache updates: %w", err)
}
return nil
}
func checkDataprovider() {
err := provider.checkAvailability()
if err != nil {
providerLog(logger.LevelError, "check availability error: %v", err)
}
metric.UpdateDataProviderAvailability(err)
}
func checkCacheUpdates() {
providerLog(logger.LevelDebug, "start caches check, update time %v", util.GetTimeFromMsecSinceEpoch(lastCachesUpdate))
checkTime := util.GetTimeAsMsSinceEpoch(time.Now())
users, err := provider.getRecentlyUpdatedUsers(lastCachesUpdate)
if err != nil {
providerLog(logger.LevelError, "unable to get recently updated users: %v", err)
return
}
for _, user := range users {
providerLog(logger.LevelDebug, "invalidate caches for user %#v", user.Username)
webDAVUsersCache.swap(&user)
cachedPasswords.Remove(user.Username)
}
lastCachesUpdate = checkTime
providerLog(logger.LevelDebug, "end caches check, new update time %v", util.GetTimeFromMsecSinceEpoch(lastCachesUpdate))
}