initial commit

internal/pkg/app/postgres.go

@@ -0,0 +1,20 @@
+package app
+
+import (
+	"log"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/jackc/pgx/v5/stdlib"
+	"github.com/jmoiron/sqlx"
+)
+
+func (a *App) initPostgres() {
+	if a.config.postgresURI == "" {
+		return
+	}
+	pool, err := pgxpool.New(a.ctx, a.config.postgresURI)
+	if err != nil {
+		log.Fatalln("failed to connect to postgres:", err)
+	}
+	a.postgres = sqlx.NewDb(stdlib.OpenDBFromPool(pool), "postgres")
+}