Merge pull request #38996 from dcbw/proxy-sync-fewer-services

Automatic merge from submit-queue

proxy/iptables: don't sync proxy rules if services map didn't change

Build the service map in a separate testable function.  Return that map instead of changing proxier.serviceMap directly.  Use reflect.DeepEqual() to skip syncing proxy rules if nothing actually changed.

@thockin @kubernetes/rh-networking @kubernetes/sig-network-misc @timothysc @wojtek-t @jeremyeder @caseydavenport
pull/6/head
Kubernetes Submit Queue 2017-01-11 23:10:23 -08:00 committed by GitHub
commit 3371766d0a
3 changed files with 396 additions and 105 deletions

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@ -40,8 +40,10 @@ go_test(
tags = ["automanaged"],
deps = [
"//pkg/api:go_default_library",
"//pkg/api/service:go_default_library",
"//pkg/proxy:go_default_library",
"//pkg/util/exec:go_default_library",
"//pkg/util/intstr:go_default_library",
"//pkg/util/iptables:go_default_library",
"//pkg/util/iptables/testing:go_default_library",
"//vendor:k8s.io/apimachinery/pkg/types",

View File

@ -153,18 +153,44 @@ type endpointsInfo struct {
}
// returns a new serviceInfo struct
func newServiceInfo(service proxy.ServicePortName) *serviceInfo {
return &serviceInfo{
sessionAffinityType: api.ServiceAffinityNone, // default
stickyMaxAgeMinutes: 180, // TODO: paramaterize this in the API.
func newServiceInfo(serviceName proxy.ServicePortName, port *api.ServicePort, service *api.Service) *serviceInfo {
onlyNodeLocalEndpoints := apiservice.NeedsHealthCheck(service) && featuregate.DefaultFeatureGate.ExternalTrafficLocalOnly() && (service.Spec.Type == api.ServiceTypeLoadBalancer || service.Spec.Type == api.ServiceTypeNodePort)
info := &serviceInfo{
clusterIP: net.ParseIP(service.Spec.ClusterIP),
port: int(port.Port),
protocol: port.Protocol,
nodePort: int(port.NodePort),
// Deep-copy in case the service instance changes
loadBalancerStatus: *api.LoadBalancerStatusDeepCopy(&service.Status.LoadBalancer),
sessionAffinityType: service.Spec.SessionAffinity,
stickyMaxAgeMinutes: 180, // TODO: paramaterize this in the API.
externalIPs: make([]string, len(service.Spec.ExternalIPs)),
loadBalancerSourceRanges: make([]string, len(service.Spec.LoadBalancerSourceRanges)),
onlyNodeLocalEndpoints: onlyNodeLocalEndpoints,
}
copy(info.loadBalancerSourceRanges, service.Spec.LoadBalancerSourceRanges)
copy(info.externalIPs, service.Spec.ExternalIPs)
if info.onlyNodeLocalEndpoints {
p := apiservice.GetServiceHealthCheckNodePort(service)
if p == 0 {
glog.Errorf("Service does not contain necessary annotation %v",
apiservice.BetaAnnotationHealthCheckNodePort)
} else {
info.healthCheckNodePort = int(p)
}
}
return info
}
type proxyServiceMap map[proxy.ServicePortName]*serviceInfo
// Proxier is an iptables based proxy for connections between a localhost:lport
// and services that provide the actual backends.
type Proxier struct {
mu sync.Mutex // protects the following fields
serviceMap map[proxy.ServicePortName]*serviceInfo
serviceMap proxyServiceMap
endpointsMap map[proxy.ServicePortName][]*endpointsInfo
portsMap map[localPort]closeable
haveReceivedServiceUpdate bool // true once we've seen an OnServiceUpdate event
@ -278,7 +304,7 @@ func NewProxier(ipt utiliptables.Interface,
}
return &Proxier{
serviceMap: make(map[proxy.ServicePortName]*serviceInfo),
serviceMap: make(proxyServiceMap),
endpointsMap: make(map[proxy.ServicePortName][]*endpointsInfo),
portsMap: make(map[localPort]closeable),
syncPeriod: syncPeriod,
@ -382,44 +408,6 @@ func CleanupLeftovers(ipt utiliptables.Interface) (encounteredError bool) {
return encounteredError
}
func (proxier *Proxier) sameConfig(info *serviceInfo, service *api.Service, port *api.ServicePort) bool {
if info.protocol != port.Protocol || info.port != int(port.Port) || info.nodePort != int(port.NodePort) {
return false
}
if !info.clusterIP.Equal(net.ParseIP(service.Spec.ClusterIP)) {
return false
}
if !ipsEqual(info.externalIPs, service.Spec.ExternalIPs) {
return false
}
if !api.LoadBalancerStatusEqual(&info.loadBalancerStatus, &service.Status.LoadBalancer) {
return false
}
if info.sessionAffinityType != service.Spec.SessionAffinity {
return false
}
onlyNodeLocalEndpoints := apiservice.NeedsHealthCheck(service) && featuregate.DefaultFeatureGate.ExternalTrafficLocalOnly()
if info.onlyNodeLocalEndpoints != onlyNodeLocalEndpoints {
return false
}
if !reflect.DeepEqual(info.loadBalancerSourceRanges, service.Spec.LoadBalancerSourceRanges) {
return false
}
return true
}
func ipsEqual(lhs, rhs []string) bool {
if len(lhs) != len(rhs) {
return false
}
for i := range lhs {
if lhs[i] != rhs[i] {
return false
}
}
return true
}
// Sync is called to immediately synchronize the proxier state to iptables
func (proxier *Proxier) Sync() {
proxier.mu.Lock()
@ -438,18 +426,18 @@ func (proxier *Proxier) SyncLoop() {
}
}
// OnServiceUpdate tracks the active set of service proxies.
// They will be synchronized using syncProxyRules()
func (proxier *Proxier) OnServiceUpdate(allServices []api.Service) {
start := time.Now()
defer func() {
glog.V(4).Infof("OnServiceUpdate took %v for %d services", time.Since(start), len(allServices))
}()
proxier.mu.Lock()
defer proxier.mu.Unlock()
proxier.haveReceivedServiceUpdate = true
type healthCheckPort struct {
namespace types.NamespacedName
nodeport int
}
activeServices := make(map[proxy.ServicePortName]bool) // use a map as a set
// Accepts a list of Services and the existing service map. Returns the new
// service map, a list of healthcheck ports to add to or remove from the health
// checking listener service, and a set of stale UDP services.
func buildServiceMap(allServices []api.Service, oldServiceMap proxyServiceMap) (proxyServiceMap, []healthCheckPort, []healthCheckPort, sets.String) {
newServiceMap := make(proxyServiceMap)
healthCheckAdd := make([]healthCheckPort, 0)
healthCheckDel := make([]healthCheckPort, 0)
for i := range allServices {
service := &allServices[i]
@ -463,6 +451,11 @@ func (proxier *Proxier) OnServiceUpdate(allServices []api.Service) {
glog.V(3).Infof("Skipping service %s due to clusterIP = %q", svcName, service.Spec.ClusterIP)
continue
}
// Even if ClusterIP is set, ServiceTypeExternalName services don't get proxied
if service.Spec.Type == api.ServiceTypeExternalName {
glog.V(3).Infof("Skipping service %s due to Type=ExternalName", svcName)
continue
}
for i := range service.Spec.Ports {
servicePort := &service.Spec.Ports[i]
@ -471,72 +464,80 @@ func (proxier *Proxier) OnServiceUpdate(allServices []api.Service) {
NamespacedName: svcName,
Port: servicePort.Name,
}
activeServices[serviceName] = true
info, exists := proxier.serviceMap[serviceName]
if exists && proxier.sameConfig(info, service, servicePort) {
// Nothing changed.
continue
}
if exists {
// Something changed.
glog.V(3).Infof("Something changed for service %q: removing it", serviceName)
delete(proxier.serviceMap, serviceName)
}
serviceIP := net.ParseIP(service.Spec.ClusterIP)
glog.V(1).Infof("Adding new service %q at %s:%d/%s", serviceName, serviceIP, servicePort.Port, servicePort.Protocol)
info = newServiceInfo(serviceName)
info.clusterIP = serviceIP
info.port = int(servicePort.Port)
info.protocol = servicePort.Protocol
info.nodePort = int(servicePort.NodePort)
info.externalIPs = service.Spec.ExternalIPs
// Deep-copy in case the service instance changes
info.loadBalancerStatus = *api.LoadBalancerStatusDeepCopy(&service.Status.LoadBalancer)
info.sessionAffinityType = service.Spec.SessionAffinity
info.loadBalancerSourceRanges = service.Spec.LoadBalancerSourceRanges
info.onlyNodeLocalEndpoints = apiservice.NeedsHealthCheck(service) && featuregate.DefaultFeatureGate.ExternalTrafficLocalOnly() && (service.Spec.Type == api.ServiceTypeLoadBalancer || service.Spec.Type == api.ServiceTypeNodePort)
if info.onlyNodeLocalEndpoints {
p := apiservice.GetServiceHealthCheckNodePort(service)
if p == 0 {
glog.Errorf("Service does not contain necessary annotation %v",
apiservice.BetaAnnotationHealthCheckNodePort)
} else {
glog.V(4).Infof("Adding health check for %+v, port %v", serviceName.NamespacedName, p)
info.healthCheckNodePort = int(p)
// Turn on healthcheck responder to listen on the health check nodePort
healthcheck.AddServiceListener(serviceName.NamespacedName, info.healthCheckNodePort)
}
} else {
glog.V(4).Infof("Deleting health check for %+v", serviceName.NamespacedName)
// Delete healthcheck responders, if any, previously listening for this service
healthcheck.DeleteServiceListener(serviceName.NamespacedName, 0)
}
proxier.serviceMap[serviceName] = info
info := newServiceInfo(serviceName, servicePort, service)
oldInfo, exists := oldServiceMap[serviceName]
equal := reflect.DeepEqual(info, oldInfo)
if !exists {
glog.V(1).Infof("Adding new service %q at %s:%d/%s", serviceName, info.clusterIP, servicePort.Port, servicePort.Protocol)
} else if !equal {
glog.V(1).Infof("Updating existing service %q at %s:%d/%s", serviceName, info.clusterIP, servicePort.Port, servicePort.Protocol)
}
if !exists || !equal {
if info.onlyNodeLocalEndpoints && info.healthCheckNodePort > 0 {
healthCheckAdd = append(healthCheckAdd, healthCheckPort{serviceName.NamespacedName, info.healthCheckNodePort})
} else {
healthCheckDel = append(healthCheckDel, healthCheckPort{serviceName.NamespacedName, 0})
}
}
newServiceMap[serviceName] = info
glog.V(4).Infof("added serviceInfo(%s): %s", serviceName, spew.Sdump(info))
}
}
staleUDPServices := sets.NewString()
// Remove serviceports missing from the update.
for name, info := range proxier.serviceMap {
if !activeServices[name] {
for name, info := range oldServiceMap {
if _, exists := newServiceMap[name]; !exists {
glog.V(1).Infof("Removing service %q", name)
if info.protocol == api.ProtocolUDP {
staleUDPServices.Insert(info.clusterIP.String())
}
delete(proxier.serviceMap, name)
if info.onlyNodeLocalEndpoints && info.healthCheckNodePort > 0 {
// Remove ServiceListener health check nodePorts from the health checker
// TODO - Stats
glog.V(4).Infof("Deleting health check for %+v, port %v", name.NamespacedName, info.healthCheckNodePort)
healthcheck.DeleteServiceListener(name.NamespacedName, info.healthCheckNodePort)
healthCheckDel = append(healthCheckDel, healthCheckPort{name.NamespacedName, info.healthCheckNodePort})
}
}
}
proxier.syncProxyRules()
proxier.deleteServiceConnections(staleUDPServices.List())
return newServiceMap, healthCheckAdd, healthCheckDel, staleUDPServices
}
// OnServiceUpdate tracks the active set of service proxies.
// They will be synchronized using syncProxyRules()
func (proxier *Proxier) OnServiceUpdate(allServices []api.Service) {
start := time.Now()
defer func() {
glog.V(4).Infof("OnServiceUpdate took %v for %d services", time.Since(start), len(allServices))
}()
proxier.mu.Lock()
defer proxier.mu.Unlock()
proxier.haveReceivedServiceUpdate = true
newServiceMap, hcAdd, hcDel, staleUDPServices := buildServiceMap(allServices, proxier.serviceMap)
for _, hc := range hcAdd {
glog.V(4).Infof("Adding health check for %+v, port %v", hc.namespace, hc.nodeport)
// Turn on healthcheck responder to listen on the health check nodePort
// FIXME: handle failures from adding the service
healthcheck.AddServiceListener(hc.namespace, hc.nodeport)
}
for _, hc := range hcDel {
// Remove ServiceListener health check nodePorts from the health checker
// TODO - Stats
glog.V(4).Infof("Deleting health check for %+v, port %v", hc.namespace, hc.nodeport)
// FIXME: handle failures from deleting the service
healthcheck.DeleteServiceListener(hc.namespace, hc.nodeport)
}
if len(newServiceMap) != len(proxier.serviceMap) || !reflect.DeepEqual(newServiceMap, proxier.serviceMap) {
proxier.serviceMap = newServiceMap
proxier.syncProxyRules()
} else {
glog.V(4).Infof("Skipping proxy iptables rule sync on service update because nothing changed")
}
proxier.deleteServiceConnections(staleUDPServices.List())
}
// Generate a list of ip strings from the list of endpoint infos

View File

@ -25,8 +25,10 @@ import (
"k8s.io/apimachinery/pkg/types"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/service"
"k8s.io/kubernetes/pkg/proxy"
"k8s.io/kubernetes/pkg/util/exec"
"k8s.io/kubernetes/pkg/util/intstr"
utiliptables "k8s.io/kubernetes/pkg/util/iptables"
iptablestest "k8s.io/kubernetes/pkg/util/iptables/testing"
)
@ -883,4 +885,290 @@ func onlyLocalNodePorts(t *testing.T, fp *Proxier, ipt *iptablestest.FakeIPTable
}
}
func makeTestService(namespace, name string, svcFunc func(*api.Service)) api.Service {
svc := api.Service{
ObjectMeta: api.ObjectMeta{
Name: name,
Namespace: namespace,
},
Spec: api.ServiceSpec{},
Status: api.ServiceStatus{},
}
svcFunc(&svc)
return svc
}
func addTestPort(array []api.ServicePort, name string, protocol api.Protocol, port, nodeport int32, targetPort int) []api.ServicePort {
svcPort := api.ServicePort{
Name: name,
Protocol: protocol,
Port: port,
NodePort: nodeport,
TargetPort: intstr.FromInt(targetPort),
}
return append(array, svcPort)
}
func TestBuildServiceMapAddRemove(t *testing.T) {
services := []api.Service{
makeTestService("somewhere-else", "cluster-ip", func(svc *api.Service) {
svc.Spec.Type = api.ServiceTypeClusterIP
svc.Spec.ClusterIP = "172.16.55.4"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "something", "UDP", 1234, 4321, 0)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "somethingelse", "UDP", 1235, 5321, 0)
}),
makeTestService("somewhere-else", "node-port", func(svc *api.Service) {
svc.Spec.Type = api.ServiceTypeNodePort
svc.Spec.ClusterIP = "172.16.55.10"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "blahblah", "UDP", 345, 678, 0)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "moreblahblah", "TCP", 344, 677, 0)
}),
makeTestService("somewhere", "load-balancer", func(svc *api.Service) {
svc.Spec.Type = api.ServiceTypeLoadBalancer
svc.Spec.ClusterIP = "172.16.55.11"
svc.Spec.LoadBalancerIP = "5.6.7.8"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "foobar", "UDP", 8675, 30061, 7000)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "baz", "UDP", 8676, 30062, 7001)
svc.Status.LoadBalancer = api.LoadBalancerStatus{
Ingress: []api.LoadBalancerIngress{
{IP: "10.1.2.4"},
},
}
}),
makeTestService("somewhere", "only-local-load-balancer", func(svc *api.Service) {
svc.ObjectMeta.Annotations = map[string]string{
service.BetaAnnotationExternalTraffic: service.AnnotationValueExternalTrafficLocal,
service.BetaAnnotationHealthCheckNodePort: "345",
}
svc.Spec.Type = api.ServiceTypeLoadBalancer
svc.Spec.ClusterIP = "172.16.55.12"
svc.Spec.LoadBalancerIP = "5.6.7.8"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "foobar2", "UDP", 8677, 30063, 7002)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "baz", "UDP", 8678, 30064, 7003)
svc.Status.LoadBalancer = api.LoadBalancerStatus{
Ingress: []api.LoadBalancerIngress{
{IP: "10.1.2.3"},
},
}
}),
}
serviceMap, hcAdd, hcDel, staleUDPServices := buildServiceMap(services, make(proxyServiceMap))
if len(serviceMap) != 8 {
t.Errorf("expected service map length 8, got %v", serviceMap)
}
// The only-local-loadbalancer ones get added
if len(hcAdd) != 2 {
t.Errorf("expected healthcheck add length 2, got %v", hcAdd)
} else {
for _, hc := range hcAdd {
if hc.namespace.Namespace != "somewhere" || hc.namespace.Name != "only-local-load-balancer" {
t.Errorf("unexpected healthcheck listener added: %v", hc)
}
}
}
// All the rest get deleted
if len(hcDel) != 6 {
t.Errorf("expected healthcheck del length 6, got %v", hcDel)
} else {
for _, hc := range hcDel {
if hc.namespace.Namespace == "somewhere" && hc.namespace.Name == "only-local-load-balancer" {
t.Errorf("unexpected healthcheck listener deleted: %v", hc)
}
}
}
if len(staleUDPServices) != 0 {
// Services only added, so nothing stale yet
t.Errorf("expected stale UDP services length 0, got %d", len(staleUDPServices))
}
// Remove some stuff
services = []api.Service{services[0]}
services[0].Spec.Ports = []api.ServicePort{services[0].Spec.Ports[1]}
serviceMap, hcAdd, hcDel, staleUDPServices = buildServiceMap(services, serviceMap)
if len(serviceMap) != 1 {
t.Errorf("expected service map length 1, got %v", serviceMap)
}
if len(hcAdd) != 0 {
t.Errorf("expected healthcheck add length 1, got %v", hcAdd)
}
// The only OnlyLocal annotation was removed above, so we expect a delete now.
// FIXME: Since the BetaAnnotationHealthCheckNodePort is the same for all
// ServicePorts, we'll get one delete per ServicePort, even though they all
// contain the same information
if len(hcDel) != 2 {
t.Errorf("expected healthcheck del length 2, got %v", hcDel)
} else {
for _, hc := range hcDel {
if hc.namespace.Namespace != "somewhere" || hc.namespace.Name != "only-local-load-balancer" {
t.Errorf("unexpected healthcheck listener deleted: %v", hc)
}
}
}
// All services but one were deleted. While you'd expect only the ClusterIPs
// from the three deleted services here, we still have the ClusterIP for
// the not-deleted service, because one of it's ServicePorts was deleted.
expectedStaleUDPServices := []string{"172.16.55.10", "172.16.55.4", "172.16.55.11", "172.16.55.12"}
if len(staleUDPServices) != len(expectedStaleUDPServices) {
t.Errorf("expected stale UDP services length %d, got %v", len(expectedStaleUDPServices), staleUDPServices.List())
}
for _, ip := range expectedStaleUDPServices {
if !staleUDPServices.Has(ip) {
t.Errorf("expected stale UDP service service %s", ip)
}
}
}
func TestBuildServiceMapServiceHeadless(t *testing.T) {
services := []api.Service{
makeTestService("somewhere-else", "headless", func(svc *api.Service) {
svc.Spec.Type = api.ServiceTypeClusterIP
svc.Spec.ClusterIP = api.ClusterIPNone
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "rpc", "UDP", 1234, 0, 0)
}),
}
// Headless service should be ignored
serviceMap, hcAdd, hcDel, staleUDPServices := buildServiceMap(services, make(proxyServiceMap))
if len(serviceMap) != 0 {
t.Errorf("expected service map length 0, got %d", len(serviceMap))
}
// No proxied services, so no healthchecks
if len(hcAdd) != 0 {
t.Errorf("expected healthcheck add length 0, got %d", len(hcAdd))
}
if len(hcDel) != 0 {
t.Errorf("expected healthcheck del length 0, got %d", len(hcDel))
}
if len(staleUDPServices) != 0 {
t.Errorf("expected stale UDP services length 0, got %d", len(staleUDPServices))
}
}
func TestBuildServiceMapServiceTypeExternalName(t *testing.T) {
services := []api.Service{
makeTestService("somewhere-else", "external-name", func(svc *api.Service) {
svc.Spec.Type = api.ServiceTypeExternalName
svc.Spec.ClusterIP = "172.16.55.4" // Should be ignored
svc.Spec.ExternalName = "foo2.bar.com"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "blah", "UDP", 1235, 5321, 0)
}),
}
serviceMap, hcAdd, hcDel, staleUDPServices := buildServiceMap(services, make(proxyServiceMap))
if len(serviceMap) != 0 {
t.Errorf("expected service map length 0, got %v", serviceMap)
}
// No proxied services, so no healthchecks
if len(hcAdd) != 0 {
t.Errorf("expected healthcheck add length 0, got %v", hcAdd)
}
if len(hcDel) != 0 {
t.Errorf("expected healthcheck del length 0, got %v", hcDel)
}
if len(staleUDPServices) != 0 {
t.Errorf("expected stale UDP services length 0, got %v", staleUDPServices)
}
}
func TestBuildServiceMapServiceUpdate(t *testing.T) {
first := []api.Service{
makeTestService("somewhere", "some-service", func(svc *api.Service) {
svc.Spec.Type = api.ServiceTypeClusterIP
svc.Spec.ClusterIP = "172.16.55.4"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "something", "UDP", 1234, 4321, 0)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "somethingelse", "TCP", 1235, 5321, 0)
}),
}
second := []api.Service{
makeTestService("somewhere", "some-service", func(svc *api.Service) {
svc.ObjectMeta.Annotations = map[string]string{
service.BetaAnnotationExternalTraffic: service.AnnotationValueExternalTrafficLocal,
service.BetaAnnotationHealthCheckNodePort: "345",
}
svc.Spec.Type = api.ServiceTypeLoadBalancer
svc.Spec.ClusterIP = "172.16.55.4"
svc.Spec.LoadBalancerIP = "5.6.7.8"
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "something", "UDP", 1234, 4321, 7002)
svc.Spec.Ports = addTestPort(svc.Spec.Ports, "somethingelse", "TCP", 1235, 5321, 7003)
svc.Status.LoadBalancer = api.LoadBalancerStatus{
Ingress: []api.LoadBalancerIngress{
{IP: "10.1.2.3"},
},
}
}),
}
serviceMap, hcAdd, hcDel, staleUDPServices := buildServiceMap(first, make(proxyServiceMap))
if len(serviceMap) != 2 {
t.Errorf("expected service map length 2, got %v", serviceMap)
}
if len(hcAdd) != 0 {
t.Errorf("expected healthcheck add length 0, got %v", hcAdd)
}
if len(hcDel) != 2 {
t.Errorf("expected healthcheck del length 2, got %v", hcDel)
}
if len(staleUDPServices) != 0 {
// Services only added, so nothing stale yet
t.Errorf("expected stale UDP services length 0, got %d", len(staleUDPServices))
}
// Change service to load-balancer
serviceMap, hcAdd, hcDel, staleUDPServices = buildServiceMap(second, serviceMap)
if len(serviceMap) != 2 {
t.Errorf("expected service map length 2, got %v", serviceMap)
}
if len(hcAdd) != 2 {
t.Errorf("expected healthcheck add length 2, got %v", hcAdd)
}
if len(hcDel) != 0 {
t.Errorf("expected healthcheck add length 2, got %v", hcDel)
}
if len(staleUDPServices) != 0 {
t.Errorf("expected stale UDP services length 0, got %v", staleUDPServices.List())
}
// No change; make sure the service map stays the same and there are
// no health-check changes
serviceMap, hcAdd, hcDel, staleUDPServices = buildServiceMap(second, serviceMap)
if len(serviceMap) != 2 {
t.Errorf("expected service map length 2, got %v", serviceMap)
}
if len(hcAdd) != 0 {
t.Errorf("expected healthcheck add length 0, got %v", hcAdd)
}
if len(hcDel) != 0 {
t.Errorf("expected healthcheck add length 2, got %v", hcDel)
}
if len(staleUDPServices) != 0 {
t.Errorf("expected stale UDP services length 0, got %v", staleUDPServices.List())
}
// And back to ClusterIP
serviceMap, hcAdd, hcDel, staleUDPServices = buildServiceMap(first, serviceMap)
if len(serviceMap) != 2 {
t.Errorf("expected service map length 2, got %v", serviceMap)
}
if len(hcAdd) != 0 {
t.Errorf("expected healthcheck add length 0, got %v", hcAdd)
}
if len(hcDel) != 2 {
t.Errorf("expected healthcheck del length 2, got %v", hcDel)
}
if len(staleUDPServices) != 0 {
// Services only added, so nothing stale yet
t.Errorf("expected stale UDP services length 0, got %d", len(staleUDPServices))
}
}
// TODO(thockin): add *more* tests for syncProxyRules() or break it down further and test the pieces.