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Merge pull request #14794 from zhengguoyong/rename_wantsExternalLoadBalancer

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k8s-merge-robot 2015-10-24 13:46:27 -07:00
commit a3187c7b21
1 changed files with 19 additions and 19 deletions
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38
pkg/controller/service/servicecontroller.go
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@ -78,7 +78,7 @@ type ServiceController struct {
} }
// New returns a new service controller to keep cloud provider service resources // New returns a new service controller to keep cloud provider service resources
// (like external load balancers) in sync with the registry. // (like load balancers) in sync with the registry.
func New(cloud cloudprovider.Interface, kubeClient client.Interface, clusterName string) *ServiceController { func New(cloud cloudprovider.Interface, kubeClient client.Interface, clusterName string) *ServiceController {
broadcaster := record.NewBroadcaster() broadcaster := record.NewBroadcaster()
broadcaster.StartRecordingToSink(kubeClient.Events("")) broadcaster.StartRecordingToSink(kubeClient.Events(""))
@ -98,12 +98,12 @@ func New(cloud cloudprovider.Interface, kubeClient client.Interface, clusterName
} }
// Run starts a background goroutine that watches for changes to services that // Run starts a background goroutine that watches for changes to services that
// have (or had) externalLoadBalancers=true and ensures that they have external // have (or had) LoadBalancers=true and ensures that they have
// load balancers created and deleted appropriately. // load balancers created and deleted appropriately.
// serviceSyncPeriod controls how often we check the cluster's services to // serviceSyncPeriod controls how often we check the cluster's services to
// ensure that the correct external load balancers exist. // ensure that the correct load balancers exist.
// nodeSyncPeriod controls how often we check the cluster's nodes to determine // nodeSyncPeriod controls how often we check the cluster's nodes to determine
// if external load balancers need to be updated to point to a new set. // if load balancers need to be updated to point to a new set.
// //
// It's an error to call Run() more than once for a given ServiceController // It's an error to call Run() more than once for a given ServiceController
// object. // object.
@ -152,17 +152,17 @@ func (s *ServiceController) init() error {
balancer, ok := s.cloud.TCPLoadBalancer() balancer, ok := s.cloud.TCPLoadBalancer()
if !ok { if !ok {
return fmt.Errorf("the cloud provider does not support external TCP load balancers.") return fmt.Errorf("the cloud provider does not support TCP load balancers.")
} }
s.balancer = balancer s.balancer = balancer
zones, ok := s.cloud.Zones() zones, ok := s.cloud.Zones()
if !ok { if !ok {
return fmt.Errorf("the cloud provider does not support zone enumeration, which is required for creating external load balancers.") return fmt.Errorf("the cloud provider does not support zone enumeration, which is required for creating load balancers.")
} }
zone, err := zones.GetZone() zone, err := zones.GetZone()
if err != nil { if err != nil {
return fmt.Errorf("failed to get zone from cloud provider, will not be able to create external load balancers: %v", err) return fmt.Errorf("failed to get zone from cloud provider, will not be able to create load balancers: %v", err)
} }
s.zone = zone s.zone = zone
return nil return nil
@ -284,10 +284,10 @@ func (s *ServiceController) createLoadBalancerIfNeeded(namespacedName types.Name
// Save the state so we can avoid a write if it doesn't change // Save the state so we can avoid a write if it doesn't change
previousState := api.LoadBalancerStatusDeepCopy(&service.Status.LoadBalancer) previousState := api.LoadBalancerStatusDeepCopy(&service.Status.LoadBalancer)
if !wantsExternalLoadBalancer(service) { if !wantsLoadBalancer(service) {
needDelete := true needDelete := true
if appliedState != nil { if appliedState != nil {
if !wantsExternalLoadBalancer(appliedState) { if !wantsLoadBalancer(appliedState) {
needDelete = false needDelete = false
} }
} else { } else {
@ -361,7 +361,7 @@ func (s *ServiceController) persistUpdate(service *api.Service) error {
glog.Infof("Not persisting update to service that has been changed since we received it: %v", err) glog.Infof("Not persisting update to service that has been changed since we received it: %v", err)
return nil return nil
} }
glog.Warningf("Failed to persist updated LoadBalancerStatus to service %s after creating its external load balancer: %v", glog.Warningf("Failed to persist updated LoadBalancerStatus to service %s after creating its load balancer: %v",
service.Name, err) service.Name, err)
time.Sleep(clientRetryInterval) time.Sleep(clientRetryInterval)
} }
@ -454,10 +454,10 @@ func (s *serviceCache) delete(serviceName string) {
} }
func needsUpdate(oldService *api.Service, newService *api.Service) bool { func needsUpdate(oldService *api.Service, newService *api.Service) bool {
if !wantsExternalLoadBalancer(oldService) && !wantsExternalLoadBalancer(newService) { if !wantsLoadBalancer(oldService) && !wantsLoadBalancer(newService) {
return false return false
} }
if wantsExternalLoadBalancer(oldService) != wantsExternalLoadBalancer(newService) { if wantsLoadBalancer(oldService) != wantsLoadBalancer(newService) {
return true return true
} }
if !portsEqualForLB(oldService, newService) || oldService.Spec.SessionAffinity != newService.Spec.SessionAffinity { if !portsEqualForLB(oldService, newService) || oldService.Spec.SessionAffinity != newService.Spec.SessionAffinity {
@ -488,7 +488,7 @@ func getPortsForLB(service *api.Service) ([]*api.ServicePort, error) {
// it's supported. // it's supported.
sp := &service.Spec.Ports[i] sp := &service.Spec.Ports[i]
if sp.Protocol != api.ProtocolTCP { if sp.Protocol != api.ProtocolTCP {
return nil, fmt.Errorf("external load balancers for non TCP services are not currently supported.") return nil, fmt.Errorf("load balancers for non TCP services are not currently supported.")
} }
ports = append(ports, sp) ports = append(ports, sp)
} }
@ -588,7 +588,7 @@ func hostsFromNodeList(list *api.NodeList) []string {
return result return result
} }
// nodeSyncLoop handles updating the hosts pointed to by all external load // nodeSyncLoop handles updating the hosts pointed to by all load
// balancers whenever the set of nodes in the cluster changes. // balancers whenever the set of nodes in the cluster changes.
func (s *ServiceController) nodeSyncLoop(period time.Duration) { func (s *ServiceController) nodeSyncLoop(period time.Duration) {
var prevHosts []string var prevHosts []string
@ -617,14 +617,14 @@ func (s *ServiceController) nodeSyncLoop(period time.Duration) {
servicesToUpdate = s.cache.allServices() servicesToUpdate = s.cache.allServices()
numServices := len(servicesToUpdate) numServices := len(servicesToUpdate)
servicesToUpdate = s.updateLoadBalancerHosts(servicesToUpdate, newHosts) servicesToUpdate = s.updateLoadBalancerHosts(servicesToUpdate, newHosts)
glog.Infof("Successfully updated %d out of %d external load balancers to direct traffic to the updated set of nodes", glog.Infof("Successfully updated %d out of %d load balancers to direct traffic to the updated set of nodes",
numServices-len(servicesToUpdate), numServices) numServices-len(servicesToUpdate), numServices)
prevHosts = newHosts prevHosts = newHosts
} }
} }
// updateLoadBalancerHosts updates all existing external load balancers so that // updateLoadBalancerHosts updates all existing load balancers so that
// they will match the list of hosts provided. // they will match the list of hosts provided.
// Returns the list of services that couldn't be updated. // Returns the list of services that couldn't be updated.
func (s *ServiceController) updateLoadBalancerHosts(services []*cachedService, hosts []string) (servicesToRetry []*cachedService) { func (s *ServiceController) updateLoadBalancerHosts(services []*cachedService, hosts []string) (servicesToRetry []*cachedService) {
@ -648,10 +648,10 @@ func (s *ServiceController) updateLoadBalancerHosts(services []*cachedService, h
return servicesToRetry return servicesToRetry
} }
// Updates the external load balancer of a service, assuming we hold the mutex // Updates the load balancer of a service, assuming we hold the mutex
// associated with the service. // associated with the service.
func (s *ServiceController) lockedUpdateLoadBalancerHosts(service *api.Service, hosts []string) error { func (s *ServiceController) lockedUpdateLoadBalancerHosts(service *api.Service, hosts []string) error {
if !wantsExternalLoadBalancer(service) { if !wantsLoadBalancer(service) {
return nil return nil
} }
@ -674,7 +674,7 @@ func (s *ServiceController) lockedUpdateLoadBalancerHosts(service *api.Service,
return err return err
} }
func wantsExternalLoadBalancer(service *api.Service) bool { func wantsLoadBalancer(service *api.Service) bool {
return service.Spec.Type == api.ServiceTypeLoadBalancer return service.Spec.Type == api.ServiceTypeLoadBalancer
} }