// ExecuteOptionalTabletInfoHook executes a hook and returns an error
// only if the hook failed, not if the hook doesn't exist.
func (wr *Wrangler) ExecuteOptionalTabletInfoHook(ctx context.Context, ti *topo.TabletInfo, hook *hk.Hook) (err error) {
hr, err := wr.ExecuteTabletInfoHook(ctx, ti, hook)
if err != nil {
return err
}
if hr.ExitStatus == hk.HOOK_DOES_NOT_EXIST {
log.Infof("Hook %v doesn't exist on tablet %v", hook.Name, ti.AliasString())
return nil
}
if hr.ExitStatus != hk.HOOK_SUCCESS {
return fmt.Errorf("Hook %v failed(%v): %v", hook.Name, hr.ExitStatus, hr.Stderr)
}
return nil
}