bbgo: call global persistence facade to sync data

pkg/bbgo/persistence.go

@@ -26,24 +26,22 @@ var PersistenceServiceFacade = DefaultPersistenceServiceFacade
 // Persistence is used for strategy to inject the persistence.
 type Persistence struct {
 	PersistenceSelector *PersistenceSelector `json:"persistence,omitempty" yaml:"persistence,omitempty"`
-
-	Facade *service.PersistenceServiceFacade `json:"-" yaml:"-"`
 }
 
 func (p *Persistence) backendService(t string) (service.PersistenceService, error) {
 	switch t {
 	case "json":
-		return p.Facade.Json, nil
+		return PersistenceServiceFacade.Json, nil
 
 	case "redis":
-		if p.Facade.Redis == nil {
+		if PersistenceServiceFacade.Redis == nil {
 			log.Warn("redis persistence is not available, fallback to memory backend")
-			return p.Facade.Memory, nil
+			return PersistenceServiceFacade.Memory, nil
 		}
-		return p.Facade.Redis, nil
+		return PersistenceServiceFacade.Redis, nil
 
 	case "memory":
-		return p.Facade.Memory, nil
+		return PersistenceServiceFacade.Memory, nil
 
 	}
 
@@ -88,7 +86,18 @@ func (p *Persistence) Sync(obj interface{}) error {
 		return nil
 	}
 
-	ps := p.Facade.Get()
+	ps := PersistenceServiceFacade.Get()
+	return storePersistenceFields(obj, id, ps)
+}
+
+// Sync syncs the object properties into the persistence layer
+func Sync(obj interface{}) error {
+	id := callID(obj)
+	if len(id) == 0 {
+		return nil
+	}
+
+	ps := PersistenceServiceFacade.Get()
 	return storePersistenceFields(obj, id, ps)
 }
 

pkg/bbgo/trader.go

@@ -389,7 +389,6 @@ var defaultPersistenceSelector = &PersistenceSelector{
 func (trader *Trader) injectCommonServices(s interface{}) error {
 	persistence := &Persistence{
 		PersistenceSelector: defaultPersistenceSelector,
-		Facade:              PersistenceServiceFacade,
 	}
 
 	// a special injection for persistence selector: