fix: update GetAdaptor function to use the actual model name

The GetAdaptor function in the Adaptor struct has been updated to use the actual model name instead of the origin model name. This change ensures that the correct adaptor is retrieved for processing the response.

relay/adaptor/vertexai/adaptor.go

@@ -38,7 +38,7 @@ func (a *Adaptor) ConvertRequest(c *gin.Context, relayMode int, request *model.G
 }
 
 func (a *Adaptor) DoResponse(c *gin.Context, resp *http.Response, meta *meta.Meta) (usage *model.Usage, err *model.ErrorWithStatusCode) {
-	adaptor := GetAdaptor(meta.OriginModelName)
+	adaptor := GetAdaptor(meta.ActualModelName)
 	if adaptor == nil {
 		return nil, &relaymodel.ErrorWithStatusCode{
 			StatusCode: http.StatusInternalServerError,

relay/meta/relay_meta.go

@@ -24,7 +24,9 @@ type Meta struct {
 	APIType      int
 	Config       model.ChannelConfig
 	IsStream     bool
+	// OriginModelName is the model name from the raw user request
 	OriginModelName string
+	// ActualModelName is the model name after mapping
 	ActualModelName string
 	RequestURLPath  string
 	PromptTokens    int // only for DoResponse