89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
package database
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import (
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"fmt"
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"log"
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"os"
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"time"
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"github.com/Nanqipro/YunQue-Tech-Projects/ai_english_learning/serve/config"
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"gorm.io/driver/mysql"
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"gorm.io/gorm"
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"gorm.io/gorm/logger"
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)
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var DB *gorm.DB
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// InitDatabase 初始化数据库连接
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func InitDatabase() {
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cfg := config.GlobalConfig
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// 构建DSN
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dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=%s&parseTime=True&loc=Local&multiStatements=true",
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cfg.Database.User,
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cfg.Database.Password,
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cfg.Database.Host,
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cfg.Database.Port,
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cfg.Database.DBName,
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cfg.Database.Charset,
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)
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// 配置GORM日志 - 使用自定义logger输出详细的SQL日志
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gormLogger := logger.New(
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log.New(os.Stdout, "\r\n", log.LstdFlags), // io writer
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logger.Config{
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SlowThreshold: time.Second, // 慢SQL阈值
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LogLevel: logger.Info, // 日志级别：Info会显示所有SQL
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IgnoreRecordNotFoundError: true, // 忽略ErrRecordNotFound错误
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Colorful: true, // 彩色输出
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},
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)
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// 连接数据库
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var err error
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DB, err = gorm.Open(mysql.Open(dsn), &gorm.Config{
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Logger: gormLogger,
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DisableForeignKeyConstraintWhenMigrating: true,
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})
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if err != nil {
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log.Fatalf("Failed to connect to database: %v", err)
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}
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// 获取底层sql.DB对象进行连接池配置
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sqlDB, err := DB.DB()
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if err != nil {
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log.Fatalf("Failed to get underlying sql.DB: %v", err)
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}
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// 设置连接池参数
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sqlDB.SetMaxIdleConns(10) // 最大空闲连接数
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sqlDB.SetMaxOpenConns(100) // 最大打开连接数
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sqlDB.SetConnMaxLifetime(time.Hour) // 连接最大生存时间
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sqlDB.SetConnMaxIdleTime(time.Minute * 30) // 连接最大空闲时间
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// 测试连接
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if err := sqlDB.Ping(); err != nil {
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log.Fatalf("Failed to ping database: %v", err)
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}
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log.Println("Database connected successfully")
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}
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// CloseDatabase 关闭数据库连接
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func CloseDatabase() {
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if DB != nil {
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sqlDB, err := DB.DB()
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if err != nil {
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log.Printf("Failed to get underlying sql.DB: %v", err)
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return
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}
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if err := sqlDB.Close(); err != nil {
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log.Printf("Failed to close database: %v", err)
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}
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}
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}
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// GetDB 获取数据库实例
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func GetDB() *gorm.DB {
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return DB
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} |