func (kd *KubeDNS) generateRecordsForHeadlessService(e *v1.Endpoints, svc *v1.Service) error {
// TODO: remove this after v1.4 is released and the old annotations are EOL
podHostnames, err := getPodHostnamesFromAnnotation(e.Annotations)
if err != nil {
return err
}
subCache := treecache.NewTreeCache()
glog.V(4).Infof("Endpoints Annotations: %v", e.Annotations)
for idx := range e.Subsets {
for subIdx := range e.Subsets[idx].Addresses {
address := &e.Subsets[idx].Addresses[subIdx]
endpointIP := address.IP
recordValue, endpointName := util.GetSkyMsg(endpointIP, 0)
if hostLabel, exists := getHostname(address, podHostnames); exists {
endpointName = hostLabel
}
subCache.SetEntry(endpointName, recordValue, kd.fqdn(svc, endpointName))
for portIdx := range e.Subsets[idx].Ports {
endpointPort := &e.Subsets[idx].Ports[portIdx]
if endpointPort.Name != "" && endpointPort.Protocol != "" {
srvValue := kd.generateSRVRecordValue(svc, int(endpointPort.Port), endpointName)
glog.V(2).Infof("Added SRV record %+v", srvValue)
l := []string{"_" + strings.ToLower(string(endpointPort.Protocol)), "_" + endpointPort.Name}
subCache.SetEntry(endpointName, srvValue, kd.fqdn(svc, append(l, endpointName)...), l...)
}
}
}
}
subCachePath := append(kd.domainPath, serviceSubdomain, svc.Namespace)
kd.cacheLock.Lock()
defer kd.cacheLock.Unlock()
kd.cache.SetSubCache(svc.Name, subCache, subCachePath...)
return nil
}
func (kd *KubeDNS) newPortalService(service *v1.Service) {
subCache := treecache.NewTreeCache()
recordValue, recordLabel := util.GetSkyMsg(service.Spec.ClusterIP, 0)
subCache.SetEntry(recordLabel, recordValue, kd.fqdn(service, recordLabel))
// Generate SRV Records
for i := range service.Spec.Ports {
port := &service.Spec.Ports[i]
if port.Name != "" && port.Protocol != "" {
srvValue := kd.generateSRVRecordValue(service, int(port.Port))
l := []string{"_" + strings.ToLower(string(port.Protocol)), "_" + port.Name}
glog.V(2).Infof("Added SRV record %+v", srvValue)
subCache.SetEntry(recordLabel, srvValue, kd.fqdn(service, append(l, recordLabel)...), l...)
}
}
subCachePath := append(kd.domainPath, serviceSubdomain, service.Namespace)
host := getServiceFQDN(kd.domain, service)
reverseRecord, _ := util.GetSkyMsg(host, 0)
kd.cacheLock.Lock()
defer kd.cacheLock.Unlock()
kd.cache.SetSubCache(service.Name, subCache, subCachePath...)
kd.reverseRecordMap[service.Spec.ClusterIP] = reverseRecord
kd.clusterIPServiceMap[service.Spec.ClusterIP] = service
}
func newKubeDNS() *KubeDNS {
kd := &KubeDNS{
domain: testDomain,
endpointsStore: cache.NewStore(cache.MetaNamespaceKeyFunc),
servicesStore: cache.NewStore(cache.MetaNamespaceKeyFunc),
cache: treecache.NewTreeCache(),
reverseRecordMap: make(map[string]*skymsg.Service),
clusterIPServiceMap: make(map[string]*kapi.Service),
cacheLock: sync.RWMutex{},
domainPath: util.ReverseArray(strings.Split(strings.TrimRight(testDomain, "."), ".")),
nodesStore: cache.NewStore(cache.MetaNamespaceKeyFunc),
}
return kd
}
func newKubeDNS() *KubeDNS {
return &KubeDNS{
domain: testDomain,
domainPath: util.ReverseArray(strings.Split(strings.TrimRight(testDomain, "."), ".")),
endpointsStore: cache.NewStore(cache.MetaNamespaceKeyFunc),
servicesStore: cache.NewStore(cache.MetaNamespaceKeyFunc),
nodesStore: cache.NewStore(cache.MetaNamespaceKeyFunc),
cache: treecache.NewTreeCache(),
reverseRecordMap: make(map[string]*skymsg.Service),
clusterIPServiceMap: make(map[string]*v1.Service),
cacheLock: sync.RWMutex{},
config: config.NewDefaultConfig(),
configLock: sync.RWMutex{},
configSync: config.NewNopSync(config.NewDefaultConfig()),
}
}
func NewKubeDNS(client clientset.Interface, clusterDomain string, configSync config.Sync) *KubeDNS {
kd := &KubeDNS{
kubeClient: client,
domain: clusterDomain,
cache: treecache.NewTreeCache(),
cacheLock: sync.RWMutex{},
nodesStore: kcache.NewStore(kcache.MetaNamespaceKeyFunc),
reverseRecordMap: make(map[string]*skymsg.Service),
clusterIPServiceMap: make(map[string]*v1.Service),
domainPath: util.ReverseArray(strings.Split(strings.TrimRight(clusterDomain, "."), ".")),
configLock: sync.RWMutex{},
configSync: configSync,
}
kd.setEndpointsStore()
kd.setServicesStore()
return kd
}
func NewKubeDNS(client clientset.Interface, domain string, federations map[string]string) (*KubeDNS, error) {
// Verify that federation names should not contain dots ('.')
// We can not allow dots since we use that as separator for path segments (svcname.nsname.fedname.svc.domain)
for key := range federations {
if strings.ContainsAny(key, ".") {
return nil, fmt.Errorf("invalid federation name: %s, cannot have '.'", key)
}
}
kd := &KubeDNS{
kubeClient: client,
domain: domain,
cache: treecache.NewTreeCache(),
cacheLock: sync.RWMutex{},
nodesStore: kcache.NewStore(kcache.MetaNamespaceKeyFunc),
reverseRecordMap: make(map[string]*skymsg.Service),
clusterIPServiceMap: make(map[string]*kapi.Service),
domainPath: util.ReverseArray(strings.Split(strings.TrimRight(domain, "."), ".")),
federations: federations,
}
kd.setEndpointsStore()
kd.setServicesStore()
return kd, nil
}
