Add existing codebase

pkg/brainbuffer/database/migrate.go

@@ -0,0 +1,27 @@
+package database
+
+import (
+	"context"
+	"github.com/jackc/pgx/v4/pgxpool"
+	"github.com/jackc/tern/migrate"
+)
+
+func Migrate(pool *pgxpool.Pool) {
+	conn, err := pool.Acquire(context.Background())
+	if err != nil {
+		panic(err)
+	}
+
+	migrator, err := migrate.NewMigrator(context.Background(), conn.Conn(), "schema_version")
+	if err != nil {
+		panic(err)
+	}
+
+	if err = migrator.LoadMigrations("./migrations"); err != nil {
+		panic(err)
+	}
+
+	if err = migrator.Migrate(context.Background()); err != nil {
+		panic(err)
+	}
+}