package workers import ( "fmt" "runtime/debug" "time" "github.com/photoprism/photoprism/internal/config" "github.com/photoprism/photoprism/internal/entity" "github.com/photoprism/photoprism/internal/event" "github.com/photoprism/photoprism/internal/form" "github.com/photoprism/photoprism/internal/mutex" "github.com/photoprism/photoprism/internal/remote" "github.com/photoprism/photoprism/internal/search" ) // Sync represents a sync worker. type Sync struct { conf *config.Config } // NewSync returns a new sync worker. func NewSync(conf *config.Config) *Sync { return &Sync{ conf: conf, } } // logError logs an error message if err is not nil. func (worker *Sync) logError(err error) { if err != nil { log.Errorf("sync: %s", err.Error()) } } // logWarn logs a warning message if err is not nil. func (worker *Sync) logWarn(err error) { if err != nil { log.Warnf("sync: %s", err.Error()) } } // Start starts the sync worker. func (worker *Sync) Start() (err error) { defer func() { if r := recover(); r != nil { err = fmt.Errorf("sync: %s (panic)\nstack: %s", r, debug.Stack()) log.Error(err) } }() if err := mutex.SyncWorker.Start(); err != nil { return err } defer mutex.SyncWorker.Stop() f := form.SearchAccounts{ Sync: true, } accounts, err := search.Accounts(f) for _, a := range accounts { if a.AccType != remote.ServiceWebDAV { continue } // Failed too often? if a.RetryLimit > 0 && a.AccErrors > a.RetryLimit { a.AccSync = false if err := entity.Db().Save(&a).Error; err != nil { worker.logError(err) } else { log.Warnf("sync: disabled sync, %s failed more than %d times", a.AccName, a.RetryLimit) } continue } // Values updated in account: AccError, AccErrors, SyncStatus, SyncDate accError := a.AccError accErrors := a.AccErrors syncStatus := a.SyncStatus syncDate := a.SyncDate synced := false switch a.SyncStatus { case entity.AccountSyncStatusRefresh: if complete, err := worker.refresh(a); err != nil { accErrors++ accError = err.Error() } else if complete { accErrors = 0 accError = "" if a.SyncDownload { syncStatus = entity.AccountSyncStatusDownload } else if a.SyncUpload { syncStatus = entity.AccountSyncStatusUpload } else { syncStatus = entity.AccountSyncStatusSynced syncDate.Time = time.Now() syncDate.Valid = true } } case entity.AccountSyncStatusDownload: if complete, err := worker.download(a); err != nil { accErrors++ accError = err.Error() syncStatus = entity.AccountSyncStatusRefresh } else if complete { if a.SyncUpload { syncStatus = entity.AccountSyncStatusUpload } else { synced = true syncStatus = entity.AccountSyncStatusSynced syncDate.Time = time.Now() syncDate.Valid = true } } case entity.AccountSyncStatusUpload: if complete, err := worker.upload(a); err != nil { accErrors++ accError = err.Error() syncStatus = entity.AccountSyncStatusRefresh } else if complete { synced = true syncStatus = entity.AccountSyncStatusSynced syncDate.Time = time.Now() syncDate.Valid = true } case entity.AccountSyncStatusSynced: if a.SyncDate.Valid && a.SyncDate.Time.Before(time.Now().Add(time.Duration(-1*a.SyncInterval)*time.Second)) { syncStatus = entity.AccountSyncStatusRefresh } default: syncStatus = entity.AccountSyncStatusRefresh } if mutex.SyncWorker.Canceled() { return nil } // Only update the following fields to avoid overwriting other settings if err := a.Updates(map[string]interface{}{ "AccError": accError, "AccErrors": accErrors, "SyncStatus": syncStatus, "SyncDate": syncDate}); err != nil { worker.logError(err) } else if synced { event.Publish("sync.synced", event.Data{"account": a}) } } return err }