// Sync syncs all ipvs rules present in state to kernel
func (ipvs *Ipvs) Sync(state state.State) error {
ipvs.Lock()
defer ipvs.Unlock()
log.Debug("[ipvs] Syncing")
stateSet := ipvs.getStateServicesSet(state)
currentSet, err := ipvs.getCurrentServicesSet()
if err != nil {
return err
}
rulesToAdd := stateSet.Difference(currentSet)
rulesToRemove := currentSet.Difference(stateSet)
// Adding services and destinations missing
for r := range rulesToAdd.Iter() {
service := r.(types.Service)
dsts := state.GetDestinations(&service)
if err := ipvs.addServiceAndDestinations(service, dsts); err != nil {
return err
}
log.Debugf("[ipvs] Added service: %#v with destinations: %#v", service, dsts)
}
// Cleaning rules
for r := range rulesToRemove.Iter() {
service := r.(types.Service)
err := gipvs.DeleteService(*ToIpvsService(&service))
if err != nil {
return err
}
log.Debugf("[ipvs] Removed service: %#v", service)
}
// Syncing destination rules
for _, s := range state.GetServices() {
if err := ipvs.syncDestinations(state, s); err != nil {
return err
}
}
return nil
}
func (ipvs *Ipvs) getStateDestinationsSet(state state.State, svc types.Service) mapset.Set {
// checks := state.GetChecks()
stateSet := mapset.NewSet()
// Filter healthy destinations
for _, d := range state.GetDestinations(&svc) {
// if check, ok := checks[d.GetId()]; ok {
// if check.Status == health.BAD {
// continue
// }
// } else { // no healthcheck found
// continue
// }
// Clean up to match services from kernel
d.Name = ""
d.ServiceId = ""
stateSet.Add(d)
}
return stateSet
}