func (manager *LinkManager) routeDeleted(msg *netlink.Message) {
rtmsg, err := route.ParseMessage(*msg)
if err != nil {
log.Printf("Can't parse rtnetlink route message: %v", err)
}
if isDefaultRoute(rtmsg) {
ifIndex, _ := netlink.GetAttributeUint32(rtmsg, route.RTA_OIF)
link := manager.links[ifIndex]
env := manager.createEmitEnv(link)
manager.upstartController.Emit("default-route-removed", env, false)
}
}
func (manager *LinkManager) routeAdded(msg *netlink.Message) {
rtmsg, err := route.ParseMessage(*msg)
if err != nil {
log.Printf("Can't parse route message: %v", err)
}
hdr, _ := rtmsg.Header.(*route.Header)
ifIndex, _ := netlink.GetAttributeUint32(rtmsg, route.RTA_OIF)
gatewayAttr, _ := rtmsg.GetAttribute(route.RTA_GATEWAY)
destAttr, _ := rtmsg.GetAttribute(route.RTA_DST)
destIp := convertNlAddrToIp(&destAttr)
gatewayIp := convertNlAddrToIp(&gatewayAttr)
log.Printf("Table %s: Interface %d, Gateway: %v, Destination %s",
hdr.RoutingTable().String(), ifIndex, gatewayIp.String(), destIp.String())
if isDefaultRoute(rtmsg) {
log.Printf("We found a default route on interface %d", ifIndex)
link := manager.links[ifIndex]
env := manager.createEmitEnv(link)
manager.upstartController.Emit("default-route-added", env, false)
}
}