feat: use postgres

pkg/postgres/migrate.go

@@ -0,0 +1,53 @@
+package postgres
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"io/fs"
+	"strings"
+	"sync"
+
+	"github.com/pressly/goose/v3"
+)
+
+// gooseMu serialises access to goose's package-level filesystem state so
+// concurrent calls to RunMigrations from independent services in the same
+// process do not race on goose.SetBaseFS.
+var gooseMu sync.Mutex
+
+// RunMigrations applies every pending Up migration found under dir inside fsys
+// against db. The PostgreSQL dialect is forced; goose's package-level base FS
+// is restored to the OS filesystem on the way out so a second caller in the
+// same process is safe.
+//
+// dir is the path within fsys (use "." when the migration files sit at the
+// embed root). The function does not handle Down migrations or partial
+// targets — services apply the full forward sequence at startup.
+func RunMigrations(ctx context.Context, db *sql.DB, fsys fs.FS, dir string) error {
+	if db == nil {
+		return errors.New("run migrations: nil db")
+	}
+	if fsys == nil {
+		return errors.New("run migrations: nil fs")
+	}
+	if strings.TrimSpace(dir) == "" {
+		return errors.New("run migrations: dir must not be empty")
+	}
+
+	gooseMu.Lock()
+	defer gooseMu.Unlock()
+
+	goose.SetBaseFS(fsys)
+	defer goose.SetBaseFS(nil)
+
+	if err := goose.SetDialect("postgres"); err != nil {
+		return fmt.Errorf("run migrations: set dialect: %w", err)
+	}
+
+	if err := goose.UpContext(ctx, db, dir); err != nil {
+		return fmt.Errorf("run migrations: %w", err)
+	}
+	return nil
+}