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Bake backend config into ServicePort #285

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merged 1 commit into from
May 24, 2018
Merged

Bake backend config into ServicePort #285

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11 changes: 1 addition & 10 deletions pkg/controller/controller.go
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Original file line number Diff line number Diff line change
Expand Up @@ -185,16 +185,7 @@ func NewLoadBalancerController(
})
}

var endpointIndexer cache.Indexer
if ctx.EndpointInformer != nil {
endpointIndexer = ctx.EndpointInformer.GetIndexer()
}
lbc.Translator = translator.NewTranslator(lbc.CloudClusterManager.ClusterNamer,
ctx.ServiceInformer.GetIndexer(),
ctx.NodeInformer.GetIndexer(),
ctx.PodInformer.GetIndexer(),
endpointIndexer,
negEnabled)
lbc.Translator = translator.NewTranslator(lbc.CloudClusterManager.ClusterNamer, ctx, negEnabled)
lbc.tlsLoader = &tls.TLSCertsFromSecretsLoader{Client: lbc.client}

glog.V(3).Infof("Created new loadbalancer controller")
Expand Down
55 changes: 30 additions & 25 deletions pkg/controller/translator/translator.go
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Original file line number Diff line number Diff line change
Expand Up @@ -34,43 +34,34 @@ import (
"k8s.io/client-go/tools/cache"

"k8s.io/ingress-gce/pkg/annotations"
backendconfigv1beta1 "k8s.io/ingress-gce/pkg/apis/backendconfig/v1beta1"
"k8s.io/ingress-gce/pkg/backendconfig"
"k8s.io/ingress-gce/pkg/context"
"k8s.io/ingress-gce/pkg/controller/errors"
"k8s.io/ingress-gce/pkg/loadbalancers"
"k8s.io/ingress-gce/pkg/utils"
)

// NewTranslator returns a new Translator.
func NewTranslator(
namer *utils.Namer,
svcLister cache.Indexer,
nodeLister cache.Indexer,
podLister cache.Indexer,
endpointLister cache.Indexer,
negEnabled bool) *Translator {
func NewTranslator(namer *utils.Namer, ctx *context.ControllerContext, negEnabled bool) *Translator {
return &Translator{
namer,
svcLister,
nodeLister,
podLister,
endpointLister,
negEnabled,
namer: namer,
ctx: ctx,
negEnabled: negEnabled,
}
}

// Translator helps with kubernetes -> gce api conversion.
type Translator struct {
namer *utils.Namer
svcLister cache.Indexer
nodeLister cache.Indexer
podLister cache.Indexer
endpointLister cache.Indexer
negEnabled bool
namer *utils.Namer
ctx *context.ControllerContext
negEnabled bool
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You can do this in a separate PR, but we can also put a flag that indicates whether NEG is enabled in the ContollerContext.

}

// getServicePort looks in the svc store for a matching service:port,
// and returns the nodeport.
func (t *Translator) getServicePort(id utils.ServicePortID) (*utils.ServicePort, error) {
obj, exists, err := t.svcLister.Get(
obj, exists, err := t.ctx.ServiceInformer.GetIndexer().Get(
&api_v1.Service{
ObjectMeta: meta_v1.ObjectMeta{
Name: id.Service.Name,
Expand Down Expand Up @@ -121,12 +112,26 @@ PortLoop:
return nil, errors.ErrSvcNotNodePort{Service: id.Service}
}

var backendConfig *backendconfigv1beta1.BackendConfig
if t.ctx.BackendConfigInformer != nil {
backendConfigInStore, err := backendconfig.GetBackendConfigForServicePort(t.ctx.BackendConfigInformer.GetIndexer(), svc, port)
if err != nil {
return nil, err
}
if backendConfigInStore != nil {
// Object in cache could be changed in-flight. Deepcopy to
// reduce race conditions.
backendConfig = backendConfigInStore.DeepCopy()
}
}

return &utils.ServicePort{
ID: id,
NodePort: int64(port.NodePort),
Protocol: proto,
SvcTargetPort: port.TargetPort.String(),
NEGEnabled: t.negEnabled && negEnabled,
BackendConfig: backendConfig,
}, nil
}

Expand Down Expand Up @@ -194,7 +199,7 @@ func getZone(n *api_v1.Node) string {

// GetZoneForNode returns the zone for a given node by looking up its zone label.
func (t *Translator) GetZoneForNode(name string) (string, error) {
nodes, err := listers.NewNodeLister(t.nodeLister).ListWithPredicate(utils.NodeIsReady)
nodes, err := listers.NewNodeLister(t.ctx.NodeInformer.GetIndexer()).ListWithPredicate(utils.NodeIsReady)
if err != nil {
return "", err
}
Expand All @@ -211,7 +216,7 @@ func (t *Translator) GetZoneForNode(name string) (string, error) {
// ListZones returns a list of zones this Kubernetes cluster spans.
func (t *Translator) ListZones() ([]string, error) {
zones := sets.String{}
readyNodes, err := listers.NewNodeLister(t.nodeLister).ListWithPredicate(utils.NodeIsReady)
readyNodes, err := listers.NewNodeLister(t.ctx.NodeInformer.GetIndexer()).ListWithPredicate(utils.NodeIsReady)
if err != nil {
return zones.List(), err
}
Expand All @@ -228,7 +233,7 @@ func (t *Translator) getHTTPProbe(svc api_v1.Service, targetPort intstr.IntOrStr

// Lookup any container with a matching targetPort from the set of pods
// with a matching label selector.
pl, err := listPodsBySelector(t.podLister, labels.SelectorFromSet(labels.Set(l)))
pl, err := listPodsBySelector(t.ctx.PodInformer.GetIndexer(), labels.SelectorFromSet(labels.Set(l)))
if err != nil {
return nil, err
}
Expand Down Expand Up @@ -280,7 +285,7 @@ func (t *Translator) GatherEndpointPorts(svcPorts []utils.ServicePort) []string
// For NEG backend, need to open firewall to all endpoint target ports
// TODO(mixia): refactor firewall syncing into a separate go routine with different trigger.
// With NEG, endpoint changes may cause firewall ports to be different if user specifies inconsistent backends.
endpointPorts := listEndpointTargetPorts(t.endpointLister, sp.ID.Service.Namespace, sp.ID.Service.Name, sp.SvcTargetPort)
endpointPorts := listEndpointTargetPorts(t.ctx.EndpointInformer.GetIndexer(), sp.ID.Service.Namespace, sp.ID.Service.Name, sp.SvcTargetPort)
for _, ep := range endpointPorts {
portMap[int64(ep)] = true
}
Expand All @@ -304,7 +309,7 @@ func isSimpleHTTPProbe(probe *api_v1.Probe) bool {

// GetProbe returns a probe that's used for the given nodeport
func (t *Translator) GetProbe(port utils.ServicePort) (*api_v1.Probe, error) {
sl := t.svcLister.List()
sl := t.ctx.ServiceInformer.GetIndexer().List()

// Find the label and target port of the one service with the given nodePort
var service api_v1.Service
Expand Down
34 changes: 16 additions & 18 deletions pkg/controller/translator/translator_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -52,40 +52,37 @@ func fakeTranslator(negEnabled bool) *Translator {
ctx := context.NewControllerContext(client, backendConfigClient, apiv1.NamespaceAll, 1*time.Second, negEnabled)
gce := &Translator{
namer: namer,
svcLister: ctx.ServiceInformer.GetIndexer(),
nodeLister: ctx.NodeInformer.GetIndexer(),
podLister: ctx.PodInformer.GetIndexer(),
ctx: ctx,
negEnabled: negEnabled,
}
if ctx.EndpointInformer != nil {
gce.endpointLister = ctx.EndpointInformer.GetIndexer()
}
return gce
}

func TestTranslateIngress(t *testing.T) {
translator := fakeTranslator(false)

svcLister := translator.ctx.ServiceInformer.GetIndexer()

// default backend
svc := test.NewService(types.NamespacedName{Name: "default-http-backend", Namespace: "kube-system"}, apiv1.ServiceSpec{
Type: apiv1.ServiceTypeNodePort,
Ports: []apiv1.ServicePort{{Name: "http", Port: 80}},
})
translator.svcLister.Add(svc)
svcLister.Add(svc)

// first-service
svc = test.NewService(types.NamespacedName{Name: "first-service", Namespace: "default"}, apiv1.ServiceSpec{
Type: apiv1.ServiceTypeNodePort,
Ports: []apiv1.ServicePort{{Port: 80}},
})
translator.svcLister.Add(svc)
svcLister.Add(svc)

// other-service
svc = test.NewService(types.NamespacedName{Name: "second-service", Namespace: "default"}, apiv1.ServiceSpec{
Type: apiv1.ServiceTypeNodePort,
Ports: []apiv1.ServicePort{{Port: 80}},
})
translator.svcLister.Add(svc)
svcLister.Add(svc)

cases := map[string]struct {
ing *extensions.Ingress
Expand Down Expand Up @@ -172,10 +169,10 @@ func TestGetProbe(t *testing.T) {
{NodePort: 3002, Protocol: annotations.ProtocolHTTPS}: "/foo",
}
for _, svc := range makeServices(nodePortToHealthCheck, apiv1.NamespaceDefault) {
translator.svcLister.Add(svc)
translator.ctx.ServiceInformer.GetIndexer().Add(svc)
}
for _, pod := range makePods(nodePortToHealthCheck, apiv1.NamespaceDefault) {
translator.podLister.Add(pod)
translator.ctx.PodInformer.GetIndexer().Add(pod)
}

for p, exp := range nodePortToHealthCheck {
Expand All @@ -194,12 +191,12 @@ func TestGetProbeNamedPort(t *testing.T) {
{NodePort: 3001, Protocol: annotations.ProtocolHTTP}: "/healthz",
}
for _, svc := range makeServices(nodePortToHealthCheck, apiv1.NamespaceDefault) {
translator.svcLister.Add(svc)
translator.ctx.ServiceInformer.GetIndexer().Add(svc)
}
for _, pod := range makePods(nodePortToHealthCheck, apiv1.NamespaceDefault) {
pod.Spec.Containers[0].Ports[0].Name = "test"
pod.Spec.Containers[0].ReadinessProbe.Handler.HTTPGet.Port = intstr.IntOrString{Type: intstr.String, StrVal: "test"}
translator.podLister.Add(pod)
translator.ctx.PodInformer.GetIndexer().Add(pod)
}
for p, exp := range nodePortToHealthCheck {
got, err := translator.GetProbe(p)
Expand Down Expand Up @@ -244,17 +241,17 @@ func TestGetProbeCrossNamespace(t *testing.T) {
},
},
}
translator.podLister.Add(firstPod)
translator.ctx.PodInformer.GetIndexer().Add(firstPod)
nodePortToHealthCheck := map[utils.ServicePort]string{
{NodePort: 3001, Protocol: annotations.ProtocolHTTP}: "/healthz",
}
for _, svc := range makeServices(nodePortToHealthCheck, apiv1.NamespaceDefault) {
translator.svcLister.Add(svc)
translator.ctx.ServiceInformer.GetIndexer().Add(svc)
}
for _, pod := range makePods(nodePortToHealthCheck, apiv1.NamespaceDefault) {
pod.Spec.Containers[0].Ports[0].Name = "test"
pod.Spec.Containers[0].ReadinessProbe.Handler.HTTPGet.Port = intstr.IntOrString{Type: intstr.String, StrVal: "test"}
translator.podLister.Add(pod)
translator.ctx.PodInformer.GetIndexer().Add(pod)
}

for p, exp := range nodePortToHealthCheck {
Expand Down Expand Up @@ -358,8 +355,9 @@ func TestGatherEndpointPorts(t *testing.T) {
},
}

translator.endpointLister.Add(newDefaultEndpoint(ep1))
translator.endpointLister.Add(newDefaultEndpoint(ep2))
endpointLister := translator.ctx.EndpointInformer.GetIndexer()
endpointLister.Add(newDefaultEndpoint(ep1))
endpointLister.Add(newDefaultEndpoint(ep2))

expected := []string{"80", "8080", "8081"}
got := translator.GatherEndpointPorts(svcPorts)
Expand Down
2 changes: 2 additions & 0 deletions pkg/utils/serviceport.go
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Expand Up @@ -23,6 +23,7 @@ import (
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/ingress-gce/pkg/annotations"
backendconfigv1beta1 "k8s.io/ingress-gce/pkg/apis/backendconfig/v1beta1"
)

// ServicePortID contains the Service and Port fields.
Expand All @@ -39,6 +40,7 @@ type ServicePort struct {
Protocol annotations.AppProtocol
SvcTargetPort string
NEGEnabled bool
BackendConfig *backendconfigv1beta1.BackendConfig
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I don't think it's necessary to make this a pointer. We never will need to modify it.

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One idea to make this a pointer is that we can distinguish if a ServicePort has any backendConfig associated with it.

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Okay, we can leave it for now, but we should evaluate whether we really need it. I'd like to avoid having a pointer unless we actually have to modify the object.

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That sounds good, thanks for the quick review!

}

// Description returns a string describing the ServicePort.
Expand Down