/
lock.go
67 lines (56 loc) · 1.68 KB
/
lock.go
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package configure
import (
"fmt"
"time"
"github.com/pkg/errors"
"github.com/clickvisual/clickvisual/api/internal/invoker"
"github.com/clickvisual/clickvisual/api/internal/pkg/model/db"
)
func (s *configure) TryLock(uid, configId int) (err error) {
var config db.Configuration
tx := invoker.Db.Begin()
{
err = tx.Set("gorm:query_option", "FOR UPDATE").Where("id = ?", configId).First(&config).Error
if err != nil {
tx.Rollback()
return fmt.Errorf("configuration does not exist")
}
if config.LockUid != 0 && config.LockUid != uid {
tx.Rollback()
return fmt.Errorf("failed to release the edit lock because another client is currently editing")
}
err = tx.Model(&db.Configuration{}).Where("id = ?", config.ID).Updates(map[string]interface{}{
"lock_at": time.Now().Unix(),
"lock_uid": uid,
}).Error
if err != nil {
tx.Rollback()
return errors.Wrap(err, "failed to get edit lock")
}
}
return tx.Commit().Error
}
func (s *configure) Unlock(uid, configId int) (err error) {
var config db.Configuration
tx := invoker.Db.Begin()
{
err = tx.Set("gorm:query_option", "FOR UPDATE").Where("id = ?", configId).First(&config).Error
if err != nil {
tx.Rollback()
return fmt.Errorf("configuration does not exist")
}
if config.LockUid != 0 && config.LockUid != uid {
tx.Rollback()
return fmt.Errorf("failed to release the edit lock because another client is currently editing")
}
err = tx.Model(&db.Configuration{}).Where("id = ?", config.ID).Updates(map[string]interface{}{
"lock_at": nil,
"lock_uid": 0,
}).Error
if err != nil {
tx.Rollback()
return errors.Wrap(err, "failed to release edit lock")
}
}
return tx.Commit().Error
}