From 9c1325f38ec38bc4ca01df4ca8bc723841cc7cc7 Mon Sep 17 00:00:00 2001
From: Michael Mayer <michael@photoprism.app>
Date: Wed, 23 Feb 2022 15:08:28 +0100
Subject: [PATCH] MariaDB: Connect via Unix domain socket if address starts
 with "/"

---
 internal/config/db.go | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/internal/config/db.go b/internal/config/db.go
index 09dc63240..26ccd798f 100644
--- a/internal/config/db.go
+++ b/internal/config/db.go
@@ -49,11 +49,21 @@ func (c *Config) DatabaseDsn() string {
 	if c.options.DatabaseDsn == "" {
 		switch c.DatabaseDriver() {
 		case MySQL, MariaDB:
+			address := c.DatabaseServer()
+
+			// Connect via TCP or Unix Domain Socket?
+			if strings.HasPrefix(address, "/") {
+				log.Debugf("mariadb: connecting via Unix domain socket")
+				address = fmt.Sprintf("unix(%s)", address)
+			} else {
+				address = fmt.Sprintf("tcp(%s)", address)
+			}
+
 			return fmt.Sprintf(
-				"%s:%s@tcp(%s)/%s?charset=utf8mb4,utf8&collation=utf8mb4_unicode_ci&parseTime=true",
+				"%s:%s@%s/%s?charset=utf8mb4,utf8&collation=utf8mb4_unicode_ci&parseTime=true",
 				c.DatabaseUser(),
 				c.DatabasePassword(),
-				c.DatabaseServer(),
+				address,
 				c.DatabaseName(),
 			)
 		case Postgres: