init

store/use_mysql.go

@@ -0,0 +1,65 @@
+package store
+
+import (
+	"github.com/spf13/viper"
+	"go.uber.org/zap"
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+	gormLogger "gorm.io/gorm/logger"
+	"gorm.io/gorm/schema"
+
+	"github.com/wonli/aqi/config"
+	"github.com/wonli/aqi/logger"
+)
+
+type MySQLStore struct {
+	configKey string
+}
+
+func (m *MySQLStore) Config() *config.MySQL {
+	var r *config.MySQL
+	err := viper.UnmarshalKey(m.configKey, &r)
+	if err != nil {
+		return nil
+	}
+
+	return r
+}
+
+func (m *MySQLStore) Use() *gorm.DB {
+	r := m.Config()
+	if r == nil {
+		return nil
+	}
+
+	if r.Enable == 0 {
+		return nil
+	}
+
+	conf := &gorm.Config{
+		Logger: gormLogger.Default.LogMode(gormLogger.LogLevel(r.LogLevel)),
+		NamingStrategy: schema.NamingStrategy{
+			TablePrefix: r.Prefix,
+		},
+	}
+
+	db, err := gorm.Open(mysql.Open(r.GetDsn()), conf)
+	if err != nil {
+		logger.SugarLog.Error("Failed to connect to MySQL database", zap.String("error", err.Error()))
+		return nil
+	}
+
+	sqlDB, err := db.DB()
+	if err != nil {
+		logger.SugarLog.Error("Error pinging database", zap.String("error", err.Error()))
+		return nil
+	}
+
+	sqlDB.SetMaxIdleConns(r.Idle)
+	sqlDB.SetConnMaxLifetime(r.MaxLifetime)
+	if r.MaxOpen > 0 {
+		sqlDB.SetMaxOpenConns(r.MaxOpen)
+	}
+
+	return db
+}