Handle registry with empty credential

Signed-off-by: cd1989 <chende@caicloud.io>

src/core/api/registry.go

@@ -55,7 +55,9 @@ func (t *RegistryAPI) Get() {
 	}
 
 	// Hide access secret
+	if registry.Credential != nil && len(registry.Credential.AccessSecret) != 0 {
 		registry.Credential.AccessSecret = "*****"
+	}
 
 	t.Data["json"] = registry
 	t.ServeJSON()
@@ -76,8 +78,10 @@ func (t *RegistryAPI) List() {
 
 	// Hide passwords
 	for _, registry := range registries {
+		if registry.Credential != nil && len(registry.Credential.AccessSecret) != 0 {
 			registry.Credential.AccessSecret = "*****"
 		}
+	}
 
 	t.Data["json"] = registries
 	t.ServeJSON()

src/replication/ng/registry/manager.go

@@ -264,55 +264,68 @@ func encrypt(secret string) (string, error) {
 // fromDaoModel converts DAO layer registry model to replication model.
 // Also, if access secret is provided, decrypt it.
 func fromDaoModel(registry *models.Registry) (*model.Registry, error) {
-	decrypted, err := decrypt(registry.AccessSecret)
+	var decrypted string
+	var err error
+	if len(registry.AccessSecret) != 0 {
+		decrypted, err = decrypt(registry.AccessSecret)
 		if err != nil {
 			return nil, err
 		}
+	}
 
 	r := &model.Registry{
 		ID:           registry.ID,
 		Name:         registry.Name,
 		Description:  registry.Description,
 		Type:         model.RegistryType(registry.Type),
+		Credential:   &model.Credential{},
 		URL:          registry.URL,
-		Credential: &model.Credential{
-			Type:         model.CredentialType(registry.CredentialType),
-			AccessKey:    registry.AccessKey,
-			AccessSecret: decrypted,
-		},
 		Insecure:     registry.Insecure,
 		Status:       registry.Health,
 		CreationTime: registry.CreationTime,
 		UpdateTime:   registry.UpdateTime,
 	}
 
+	if len(registry.CredentialType) != 0 && len(registry.AccessKey) != 0 {
+		r.Credential = &model.Credential{
+			Type:         model.CredentialType(registry.CredentialType),
+			AccessKey:    registry.AccessKey,
+			AccessSecret: decrypted,
+		}
+	}
+
 	return r, nil
 }
 
 // toDaoModel converts registry model from replication to DAO layer model.
 // Also, if access secret is provided, encrypt it.
 func toDaoModel(registry *model.Registry) (*models.Registry, error) {
-	var encrypted string
+	m := &models.Registry{
-	var err error
-	if registry.Credential != nil {
-		encrypted, err = encrypt(registry.Credential.AccessSecret)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return &models.Registry{
 		ID:           registry.ID,
 		URL:          registry.URL,
 		Name:         registry.Name,
-		CredentialType: string(registry.Credential.Type),
-		AccessKey:      registry.Credential.AccessKey,
-		AccessSecret:   encrypted,
 		Type:         string(registry.Type),
 		Insecure:     registry.Insecure,
 		Description:  registry.Description,
 		Health:       registry.Status,
 		CreationTime: registry.CreationTime,
 		UpdateTime:   registry.UpdateTime,
-	}, nil
+	}
+
+	if registry.Credential != nil && len(registry.Credential.AccessKey) != 0 {
+		var encrypted string
+		var err error
+		if len(registry.Credential.AccessSecret) != 0 {
+			encrypted, err = encrypt(registry.Credential.AccessSecret)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		m.CredentialType = string(registry.Credential.Type)
+		m.AccessKey = registry.Credential.AccessKey
+		m.AccessSecret = encrypted
+	}
+
+	return m, nil
 }