Call tx.Rollback() in bail

server/router/handler/auth.go

@@ -78,6 +78,10 @@ func HandleLnAuthCallback(sc context.Context) echo.HandlerFunc {
 		)
 
 		bail := func(code int, reason string) error {
+			if tx != nil {
+				// manual rollback is only required for tests afaik
+				tx.Rollback()
+			}
 			return c.JSON(code, map[string]string{"status": "ERROR", "reason": reason})
 		}
 
@@ -93,19 +97,15 @@ func HandleLnAuthCallback(sc context.Context) echo.HandlerFunc {
 
 		err = tx.QueryRow("SELECT session_id FROM lnauth WHERE k1 = $1 LIMIT 1", query.K1).Scan(&sessionId)
 		if err == sql.ErrNoRows {
-			tx.Rollback()
 			return bail(http.StatusNotFound, "session not found")
 		} else if err != nil {
-			tx.Rollback()
 			return bail(http.StatusInternalServerError, err.Error())
 		}
 
 		ok, err = auth.VerifyLNAuth(&query)
 		if err != nil {
-			tx.Rollback()
 			return bail(http.StatusInternalServerError, err.Error())
 		} else if !ok {
-			tx.Rollback()
 			return bail(http.StatusBadRequest, "bad signature")
 		}
 
@@ -115,7 +115,6 @@ func HandleLnAuthCallback(sc context.Context) echo.HandlerFunc {
 				"ON CONFLICT(ln_pubkey) DO UPDATE SET ln_pubkey = $1 "+
 				"RETURNING id", query.Key).Scan(&userId)
 			if err != nil {
-				tx.Rollback()
 				pqErr, ok = err.(*pq.Error)
 				if ok && pqErr.Code == "23505" {
 					return bail(http.StatusBadRequest, "user already exists")
@@ -125,10 +124,8 @@ func HandleLnAuthCallback(sc context.Context) echo.HandlerFunc {
 		} else if query.Action == "login" {
 			err = tx.QueryRow("SELECT id FROM users WHERE ln_pubkey = $1", query.Key).Scan(&userId)
 			if err == sql.ErrNoRows {
-				tx.Rollback()
 				return bail(http.StatusNotFound, "user not found")
 			} else if err != nil {
-				tx.Rollback()
 				return bail(http.StatusInternalServerError, err.Error())
 			}
 		} else {
@@ -136,17 +133,14 @@ func HandleLnAuthCallback(sc context.Context) echo.HandlerFunc {
 		}
 
 		if _, err = tx.Exec("INSERT INTO sessions(id, user_id) VALUES($1, $2)", sessionId, userId); err != nil {
-			tx.Rollback()
 			return bail(http.StatusInternalServerError, err.Error())
 		}
 
 		if _, err = tx.Exec("DELETE FROM lnauth WHERE k1 = $1", query.K1); err != nil {
-			tx.Rollback()
 			return bail(http.StatusInternalServerError, err.Error())
 		}
 
 		if err = tx.Commit(); err != nil {
-			tx.Rollback()
 			return bail(http.StatusInternalServerError, err.Error())
 		}