record response time

process.go

@@ -133,6 +133,7 @@ func processRequest(c *gin.Context, upstream *OPENAI_UPSTREAM, record *Record, s
 	}
 	proxy.ErrorHandler = func(w http.ResponseWriter, r *http.Request, err error) {
 		haveResponse = true
+		record.ResponseTime = time.Now().Sub(record.CreatedAt)
 		log.Println("Error", err, upstream.SK, upstream.Endpoint)
 
 		errCtx = err

record.go

@@ -17,6 +17,7 @@ type Record struct {
 	Body          string `gorm:"serializer:json"`
 	Model         string
 	Response      string
+	ResponseTime  time.Duration
 	ElapsedTime   time.Duration
 	Status        int
 	UpstreamID    uint