snapshot of https://github.com/traggo/server.git (master, 2026-09-16; blobs > 131072B omitted)

database/database.go

@@ -0,0 +1,57 @@
+package database
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/jinzhu/gorm"
+	_ "github.com/jinzhu/gorm/dialects/mysql"    // enable the mysql dialect
+	_ "github.com/jinzhu/gorm/dialects/postgres" // enable the postgres dialect
+	_ "github.com/jinzhu/gorm/dialects/sqlite"   // enable the sqlite3 dialect
+	"github.com/rs/zerolog/log"
+	"github.com/traggo/server/logger"
+	"github.com/traggo/server/model"
+)
+
+var mkdirAll = os.MkdirAll
+
+// New creates a gorm instance.
+func New(dialect, connection string) (*gorm.DB, error) {
+	createDirectoryIfSqlite(dialect, connection)
+
+	db, err := gorm.Open(dialect, connection)
+	if err != nil {
+		return nil, err
+	}
+	db.LogMode(true)
+	db.SetLogger(&logger.DatabaseLogger{})
+
+	// We normally don't need that much connections, so we limit them. F.ex. mysql complains about
+	// "too many connections".
+	db.DB().SetMaxOpenConns(10)
+
+	if dialect == "sqlite3" {
+		// We use the database connection inside the handlers from the http
+		// framework, therefore concurrent access occurs. Sqlite cannot handle
+		// concurrent writes, so we limit sqlite to one connection.
+		// see https://github.com/mattn/go-sqlite3/issues/274
+		db.DB().SetMaxOpenConns(1)
+		db.Exec("PRAGMA foreign_keys = ON")
+	}
+
+	log.Debug().Msg("Auto migrating schema's")
+	db.AutoMigrate(model.All()...)
+
+	log.Debug().Msg("Database initialized")
+	return db, nil
+}
+
+func createDirectoryIfSqlite(dialect string, connection string) {
+	if dialect == "sqlite3" {
+		if _, err := os.Stat(filepath.Dir(connection)); os.IsNotExist(err) {
+			if err := mkdirAll(filepath.Dir(connection), 0777); err != nil {
+				panic(err)
+			}
+		}
+	}
+}