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dao.go
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dao.go
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package dao
import (
"github.com/samber/lo"
"go.uber.org/zap"
"gorm.io/driver/mysql"
"gorm.io/gorm"
"gorm.io/plugin/dbresolver"
"github.com/rickywei/sparrow/project/conf"
"github.com/rickywei/sparrow/project/logger"
"github.com/rickywei/sparrow/project/po"
)
var (
Q *Query
db *gorm.DB
models = []any{&po.User{}}
)
func init() {
var err error
masters := conf.Strings("mysql.dsn.masters")
if len(masters) <= 0 {
logger.L().Fatal("length of mysql.dsn.masters <= 0")
}
if db, err = gorm.Open(mysql.Open(masters[0]), &gorm.Config{}); err != nil {
logger.L().Fatal("connect db failed", zap.Error(err))
}
if err = db.Use(dbresolver.Register(dbresolver.Config{
Sources: lo.Map(masters, func(dsn string, _ int) gorm.Dialector { return mysql.Open(dsn) }),
Replicas: lo.Map(conf.Strings("mysql.dsn.slaves"), func(dsn string, _ int) gorm.Dialector { return mysql.Open(dsn) }),
Policy: dbresolver.RandomPolicy{},
TraceResolverMode: true,
})); err != nil {
logger.L().Fatal("connect db failed", zap.Error(err))
}
if conf.Bool("mysql.migrate.enable") {
if err = db.AutoMigrate(models...); err != nil {
logger.L().Fatal("auto migrate failed", zap.Error(err))
}
}
Q = Use(db)
}