Use db client factory in seeder.

common/clientfactory.go

@@ -0,0 +1,33 @@
+// Copyright 2022 by Sascha L. Teichmann
+// Use of this source code is governed by the MIT license
+// that can be found in the LICENSE file.
+
+package common
+
+import (
+	"fmt"
+	"strings"
+)
+
+type DBClientCreator func() (DBClient, error)
+
+func CreateDBClientCreator(host string, port int) DBClientCreator {
+
+	var address string
+	if strings.ContainsRune(host, '/') {
+		address = host
+	} else {
+		address = fmt.Sprintf("%s:%d", host, port)
+	}
+
+	var proto string
+	if strings.ContainsRune(address, '/') {
+		proto = "unix"
+	} else {
+		proto = "tcp"
+	}
+
+	return func() (DBClient, error) {
+		return NewRedisClient(proto, address)
+	}
+}