feat: Add PostgreSQL support and refactor MySQL DSN handling (#284)

lib/orm/postgresql.go

@@ -0,0 +1,45 @@
+package orm
+
+import (
+	"fmt"
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
+	"time"
+)
+
+type PostgresqlConfig struct {
+	Dsn          string
+	MaxIdleConns int
+	MaxOpenConns int
+}
+
+func NewPostgresql(conf *PostgresqlConfig, logwriter logger.Writer) *gorm.DB {
+	db, err := gorm.Open(postgres.Open(conf.Dsn), &gorm.Config{
+		DisableForeignKeyConstraintWhenMigrating: true,
+		Logger: logger.New(
+			logwriter, // io writer
+			logger.Config{
+				SlowThreshold: time.Second, // Slow SQL threshold
+				LogLevel:      logger.Warn, // Log level
+				//IgnoreRecordNotFoundError: true,        // Ignore ErrRecordNotFound error for logger
+				ParameterizedQueries: true, // Don't include params in the SQL log
+				Colorful:             true,
+			},
+		),
+	})
+	if err != nil {
+		fmt.Println(err)
+	}
+	sqlDB, err2 := db.DB()
+	if err2 != nil {
+		fmt.Println(err2)
+	}
+	// SetMaxIdleConns 设置空闲连接池中连接的最大数量
+	sqlDB.SetMaxIdleConns(conf.MaxIdleConns)
+
+	// SetMaxOpenConns 设置打开数据库连接的最大数量。
+	sqlDB.SetMaxOpenConns(conf.MaxOpenConns)
+
+	return db
+}