func processEpgEvent(netPlugin *plugin.NetPlugin, opts core.InstanceInfo, ID string, isDelete bool) error {
log.Infof("Received processEpgEvent")
var err error
netPlugin.Lock()
defer func() { netPlugin.Unlock() }()
operStr := ""
if isDelete {
operStr = "delete"
} else {
err = netPlugin.UpdateEndpointGroup(ID)
operStr = "update"
}
if err != nil {
log.Errorf("Epg %s failed. Error: %s", operStr, err)
} else {
log.Infof("Epg %s succeeded", operStr)
}
return err
}