func (r *Monitor) OnDeviceDown(finder network.Finder, device *network.Device) error {
go func() {
subject := "Cherry: device is down!"
body := fmt.Sprintf("DPID: %v", device.ID())
if err := r.sendAlarm(subject, body); err != nil {
r.log.Err(fmt.Sprintf("Monitor: failed to send an alarm email: %v", err))
}
}()
return r.BaseProcessor.OnDeviceDown(finder, device)
}
func (r *ProxyARP) OnDeviceDown(finder network.Finder, device *network.Device) error {
dpid, err := strconv.ParseUint(device.ID(), 10, 64)
if err != nil {
r.log.Err(fmt.Sprintf("ProxyARP: invalid switch DPID: %v", device.ID()))
return r.BaseProcessor.OnDeviceDown(finder, device)
}
vips, err := r.db.ToggleDeviceVIP(dpid)
if err != nil {
r.log.Err(fmt.Sprintf("ProxyARP: failed to toggle VIP hosts: %v", err))
return r.BaseProcessor.OnDeviceDown(finder, device)
}
r.broadcastARPAnnouncement(finder, vips)
return r.BaseProcessor.OnDeviceDown(finder, device)
}