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database.go
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database.go
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package orm
import (
"fmt"
"log"
"os"
"time"
"github.com/spf13/viper"
"github.com/techquest-tech/gin-shared/pkg/ginshared"
"go.uber.org/zap"
"gorm.io/gorm"
"gorm.io/gorm/logger"
"gorm.io/gorm/schema"
)
func init() {
ginshared.GetContainer().Provide(InitDefaultDB)
}
const (
KeyInitDB = ginshared.KeyInitDB
KeyTablePrefix = "database.tablePrefix"
)
type OrmDialector func(dsn string) gorm.Dialector
var DialectorMap = make(map[string]OrmDialector)
func InitDefaultDB(logger *zap.Logger) *gorm.DB {
return InitDB("database", logger)
}
func SessionWithConfig(slowThreshold time.Duration, ignoredNotFound bool) *gorm.Session {
return &gorm.Session{
Logger: logger.New(log.New(os.Stdout, "\r\n", log.LstdFlags),
logger.Config{
SlowThreshold: slowThreshold,
LogLevel: logger.Warn,
IgnoreRecordNotFoundError: ignoredNotFound,
Colorful: true,
}),
}
}
func InitDB(sub string, logger *zap.Logger) *gorm.DB {
dbSettings := viper.Sub(sub)
if dbSettings == nil {
return nil
}
dbSettings.SetDefault("type", "mysql")
dbType := dbSettings.GetString("type")
uri := dbSettings.GetString("connection")
maxLifetime := dbSettings.GetDuration("maxLifetime")
max := dbSettings.GetInt("max")
idel := dbSettings.GetInt("idel")
f, ok := DialectorMap[dbType]
if !ok {
panic(fmt.Errorf("driver %s is missed", dbType))
}
cfg := &gorm.Config{
PrepareStmt: true,
}
cfgorm := dbSettings.Sub("gorm")
if cfgorm != nil {
cfgorm.Unmarshal(cfg)
}
tablePrefix := dbSettings.GetString("tablePrefix")
if tablePrefix != "" {
cfg.NamingStrategy = schema.NamingStrategy{
TablePrefix: tablePrefix,
}
logger.Info("user table prefix", zap.String("tableprefix", tablePrefix))
}
db, err := gorm.Open(f(uri), cfg)
if err != nil {
panic(fmt.Sprintf("connect to db failed. err: %+v", err))
}
// See "Important settings" section.
pool, _ := db.DB()
pool.SetConnMaxIdleTime(maxLifetime)
pool.SetMaxOpenConns(max)
pool.SetMaxIdleConns(idel)
err = pool.Ping()
if err != nil {
panic(fmt.Errorf("connect to %s failed, %v", dbType, err))
}
// pool = db
logger.Info("connected to " + dbType)
return db
// go bus.Publish(EventDBReady)
}