50 lines
1.0 KiB
Go
50 lines
1.0 KiB
Go
package database
|
|
|
|
import (
|
|
"log"
|
|
"os"
|
|
"strings"
|
|
"time"
|
|
|
|
"gorm.io/driver/mysql"
|
|
"gorm.io/gorm"
|
|
"gorm.io/gorm/logger"
|
|
)
|
|
|
|
func OpenMySQL(dsn string, logLevel string) (*gorm.DB, error) {
|
|
db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{
|
|
Logger: newGormLogger(logLevel),
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
sqlDB, err := db.DB()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// 限制连接池，避免本地压测瞬间打满 MySQL max_connections。
|
|
sqlDB.SetMaxOpenConns(50)
|
|
sqlDB.SetMaxIdleConns(10)
|
|
sqlDB.SetConnMaxLifetime(30 * time.Minute)
|
|
sqlDB.SetConnMaxIdleTime(5 * time.Minute)
|
|
|
|
return db, nil
|
|
}
|
|
|
|
func newGormLogger(logLevel string) logger.Interface {
|
|
level := logger.Warn
|
|
if strings.EqualFold(strings.TrimSpace(logLevel), "debug") {
|
|
level = logger.Info
|
|
}
|
|
return logger.New(
|
|
log.New(os.Stdout, "\r\n", log.LstdFlags),
|
|
logger.Config{
|
|
SlowThreshold: 500 * time.Millisecond,
|
|
LogLevel: level,
|
|
IgnoreRecordNotFoundError: true,
|
|
Colorful: false,
|
|
},
|
|
)
|
|
}
|