func (d *ddl) verifyOwner(t *meta.TMeta) error {
owner, err := t.GetDDLOwner()
if err != nil {
return errors.Trace(err)
}
if owner == nil {
owner = &model.Owner{}
// try to set onwer
owner.OwnerID = d.uuid
}
now := time.Now().Unix()
maxTimeout := int64(4 * d.lease)
if owner.OwnerID == d.uuid || now-owner.LastUpdateTS > maxTimeout {
owner.OwnerID = d.uuid
owner.LastUpdateTS = now
// update or try to set itself as owner.
if err = t.SetDDLOwner(owner); err != nil {
return errors.Trace(err)
}
}
if owner.OwnerID != d.uuid {
return errors.Trace(ErrNotOwner)
}
return nil
}
