Create extractKeys function

command.go

@@ -119,6 +119,30 @@ func cmdString(cmd Cmder, val interface{}) string {
 	return util.BytesToString(b)
 }
 
+func extractKeys(cmd Cmder) []string {
+	firstKeyPos := cmdFirstKeyPos(cmd)
+	if firstKeyPos == -1 {
+		return nil
+	}
+	internal.Logger.Printf(context.Background(), "firstKeyPos: %d", firstKeyPos)
+	args := cmd.Args()
+	keys := []string{}
+
+	switch cmd.Name() {
+	case "MGET", "MSET":
+		for i := int(firstKeyPos); i < len(args); i += 2 {
+			keys = append(keys, cmd.stringArg(i))
+		}
+
+	default:
+		if int(firstKeyPos) < len(args) {
+			keys = append(keys, cmd.stringArg(firstKeyPos))
+		}
+	}
+
+	return keys
+}
+
 //------------------------------------------------------------------------------
 
 type baseCmd struct {

redis.go

@@ -431,7 +431,7 @@ func (c *baseClient) _process(ctx context.Context, cmd Cmder, attempt int) (bool
 			return false, err
 		}
 	}
-	panic(cmd.firstKeyPos())
+	internal.Logger.Printf(ctx, "redis: keys in command %s", extractKeys(cmd))
 	retryTimeout := uint32(0)
 	if err := c.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
 		if err := cn.WithWriter(c.context(ctx), c.opt.WriteTimeout, func(wr *proto.Writer) error {