func (ipvs *Ipvs) syncDestinations(state state.State, svc types.Service) error {
stateSet := ipvs.getStateDestinationsSet(state, svc)
currentSet, err := ipvs.getCurrentDestinationsSet(svc)
if err != nil {
return err
}
rulesToAdd := stateSet.Difference(currentSet)
rulesToRemove := currentSet.Difference(stateSet)
for r := range rulesToAdd.Iter() {
destination := r.(types.Destination)
if err := gipvs.AddDestination(*ToIpvsService(&svc), *ToIpvsDestination(&destination)); err != nil {
return err
}
}
for r := range rulesToRemove.Iter() {
destination := r.(types.Destination)
err := gipvs.DeleteDestination(*ToIpvsService(&svc), *ToIpvsDestination(&destination))
if err != nil {
return err
}
}
return nil
}
// IPVSDeleteDestination deletes the specified destination from the IPVS table.
func (ncc *SeesawNCC) IPVSDeleteDestination(dst *ncctypes.IPVSDestination, out *int) error {
ipvsMutex.Lock()
defer ipvsMutex.Unlock()
return ipvs.DeleteDestination(*dst.Service, *dst.Destination)
}
// testIPVSModification adds, updates and deletes services and destinations
// from the test configurations. At each step the service or destination is
// retrieved from IPVS and compared against what should be configured.
func testIPVSModification() {
log.Println("Testing IPVS modifications...")
// Make sure we have a clean slate.
if err := ipvs.Flush(); err != nil {
log.Fatalf("Failed to flush IPVS table: %v\n", err)
}
for _, test := range ipvsTests {
var svc *ipvs.Service
var err error
testSvc := test.service
testDst := test.destinations[0]
// Add service.
log.Printf("=> Adding service %s\n", testSvc)
if err = ipvs.AddService(testSvc); err != nil {
log.Fatalf("ipvs.AddService() failed: %v\n", err)
}
if svc, err = ipvs.GetService(&testSvc); err != nil {
log.Fatalf("ipvs.GetService() failed: %v\n", err)
}
compareSvc(&testSvc, []*ipvs.Service{svc})
// Add destination.
log.Printf("--> Adding destination %s\n", testDst)
if err = ipvs.AddDestination(testSvc, testDst); err != nil {
log.Fatalf("ipvs.AddDestination() failed: %v\n", err)
}
if svc, err = ipvs.GetService(&testSvc); err != nil {
log.Fatalf("ipvs.GetService() failed: %v\n", err)
}
compareSvc(&testSvc, []*ipvs.Service{svc})
compareDst(&testDst, svc.Destinations)
// Update service.
testSvc.Scheduler = "lc"
if err = ipvs.UpdateService(testSvc); err != nil {
log.Fatalf("ipvs.UpdateService() failed: %v\n", err)
}
if svc, err = ipvs.GetService(&testSvc); err != nil {
log.Fatalf("ipvs.GetService() failed: %v\n", err)
}
compareSvc(&testSvc, []*ipvs.Service{svc})
compareDst(&testDst, svc.Destinations)
// Update destination.
testDst.Weight = 1000
if err = ipvs.UpdateDestination(testSvc, testDst); err != nil {
log.Fatalf("ipvs.UpdateDestination() failed: %v\n", err)
}
if svc, err = ipvs.GetService(&testSvc); err != nil {
log.Fatalf("ipvs.GetService() failed: %v\n", err)
}
compareSvc(&testSvc, []*ipvs.Service{svc})
compareDst(&testDst, svc.Destinations)
// Delete destination.
if err = ipvs.DeleteDestination(testSvc, testDst); err != nil {
log.Fatalf("ipvs.DeleteDestination() failed: %v\n", err)
}
if svc, err = ipvs.GetService(&testSvc); err != nil {
log.Fatalf("ipvs.GetService() failed: %v\n", err)
}
if len(svc.Destinations) != 0 {
log.Printf("ERROR: Service still has destinations\n")
}
// Delete service.
if err = ipvs.DeleteService(testSvc); err != nil {
log.Fatalf("ipvs.DeleteService() failed: %v\n", err)
}
// Make sure there is nothing left behind.
svcs, err := ipvs.GetServices()
if err != nil {
log.Fatalf("ipvs.GetServices() failed: %v\n", err)
}
if len(svcs) != 0 {
log.Printf("ERROR: IPVS services still exist!\n")
for _, svc = range svcs {
log.Printf("=> Got service %s\n", svc)
}
}
}
}