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77 lines
2.4 KiB
Go
77 lines
2.4 KiB
Go
package core
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import (
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"log"
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"os"
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"time"
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"x_admin/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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"gorm.io/gorm/schema"
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)
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var db = initMysql()
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func GetDB() *gorm.DB {
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return db
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}
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// initMysql 初始化mysql会话
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func initMysql() *gorm.DB {
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// 日志配置
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slowThreshold := time.Second
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ignoreRecordNotFoundError := true
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logLevel := logger.Warn
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if config.Config.GinMode == "debug" {
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logLevel = logger.Info
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slowThreshold = 200 * time.Millisecond
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ignoreRecordNotFoundError = false
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}
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logger := logger.New(
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log.New(os.Stdout, "\r\n", log.LstdFlags), // io writer（日志输出的目标，前缀和日志包含的内容——译者注）
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logger.Config{
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SlowThreshold: slowThreshold, // 慢 SQL 阈值
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LogLevel: logLevel, // 日志级别
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IgnoreRecordNotFoundError: ignoreRecordNotFoundError, // 忽略ErrRecordNotFound（记录未找到）错误
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Colorful: true, // 彩色打印
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},
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)
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// 初始化会话
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db, err := gorm.Open(mysql.New(mysql.Config{
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DSN: config.Config.DatabaseUrl, // DSN data source name
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DefaultStringSize: config.Config.DbDefaultStringSize, // string 类型字段的默认长度
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SkipInitializeWithVersion: false, // 根据当前 MySQL 版本自动配置
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}), &gorm.Config{
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SkipDefaultTransaction: true, // 禁用默认事务
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NamingStrategy: schema.NamingStrategy{
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TablePrefix: config.Config.DbTablePrefix, // 表名前缀
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SingularTable: true, // 使用单一表名, eg. `User` => `user`
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},
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DisableForeignKeyConstraintWhenMigrating: true, // 禁用自动创建外键约束
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Logger: logger, // 自定义Logger
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})
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if err != nil {
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log.Fatal("initMysql gorm.Open err:", err)
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}
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db.InstanceSet("gorm:table_options", "ENGINE=InnoDB")
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sqlDB, err := db.DB()
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if err != nil {
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log.Fatal("initMysql db.DB err:", err)
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}
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// 数据库空闲连接池最大值
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sqlDB.SetMaxIdleConns(config.Config.DbMaxIdleConns)
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// 数据库连接池最大值
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sqlDB.SetMaxOpenConns(config.Config.DbMaxOpenConns)
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// 连接可复用的最大时间
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sqlDB.SetConnMaxLifetime(time.Duration(config.Config.DbConnMaxLifetimeSeconds) * time.Second)
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return db
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}
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func DBTableName(model interface{}) string {
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stmt := &gorm.Statement{DB: db}
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stmt.Parse(model)
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return stmt.Schema.Table
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}
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