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Build backend config using the K8S endpoint resource.

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* Potentialy saves a network hop
* Ability to configure LB algothim (given some work to expose an
anotation etc...)
* K8s config Watch is triggered far less often
This commit is contained in:
Ed Robinson 2016-05-20 17:34:57 +01:00
parent b79535f369
commit e948a013cd
No known key found for this signature in database
GPG key ID: EC501FCA6421CCF0
4 changed files with 210 additions and 42 deletions
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75
provider/kubernetes_test.go
View file

@ -10,6 +10,9 @@ import (
func TestLoadIngresses(t *testing.T) {
ingresses := []k8s.Ingress{{
ObjectMeta: k8s.ObjectMeta{
Namespace: "testing",
},
Spec: k8s.IngressSpec{
Rules: []k8s.IngressRule{
{
@ -55,23 +58,25 @@ func TestLoadIngresses(t *testing.T) {
services := []k8s.Service{
{
ObjectMeta: k8s.ObjectMeta{
Name: "service1",
UID: "1",
Name: "service1",
UID: "1",
Namespace: "testing",
},
Spec: k8s.ServiceSpec{
ClusterIP: "10.0.0.1",
Ports: []k8s.ServicePort{
{
Name: "http",
Port: 801,
Port: 80,
},
},
},
},
{
ObjectMeta: k8s.ObjectMeta{
Name: "service2",
UID: "2",
Name: "service2",
UID: "2",
Namespace: "testing",
},
Spec: k8s.ServiceSpec{
ClusterIP: "10.0.0.2",
@ -84,8 +89,9 @@ func TestLoadIngresses(t *testing.T) {
},
{
ObjectMeta: k8s.ObjectMeta{
Name: "service3",
UID: "3",
Name: "service3",
UID: "3",
Namespace: "testing",
},
Spec: k8s.ServiceSpec{
ClusterIP: "10.0.0.3",
@ -98,10 +104,46 @@ func TestLoadIngresses(t *testing.T) {
},
},
}
endpoints := []k8s.Endpoints{
{
ObjectMeta: k8s.ObjectMeta{
Name: "service1",
UID: "1",
Namespace: "testing",
},
Subsets: []k8s.EndpointSubset{
{
Addresses: []k8s.EndpointAddress{
{
IP: "10.10.0.1",
},
},
Ports: []k8s.EndpointPort{
{
Port: 8080,
},
},
},
{
Addresses: []k8s.EndpointAddress{
{
IP: "10.21.0.1",
},
},
Ports: []k8s.EndpointPort{
{
Port: 8080,
},
},
},
},
},
}
watchChan := make(chan interface{})
client := clientMock{
ingresses: ingresses,
services: services,
endpoints: endpoints,
watchChan: watchChan,
}
provider := Kubernetes{}
@ -114,8 +156,12 @@ func TestLoadIngresses(t *testing.T) {
Backends: map[string]*types.Backend{
"foo/bar": {
Servers: map[string]types.Server{
"1": {
URL: "http://10.0.0.1:801",
"http://10.10.0.1:8080": {
URL: "http://10.10.0.1:8080",
Weight: 1,
},
"http://10.21.0.1:8080": {
URL: "http://10.21.0.1:8080",
Weight: 1,
},
},
@ -1150,6 +1196,7 @@ func TestHostlessIngress(t *testing.T) {
type clientMock struct {
ingresses []k8s.Ingress
services []k8s.Service
endpoints []k8s.Endpoints
watchChan chan interface{}
}
@ -1174,6 +1221,16 @@ func (c clientMock) GetServices(predicate func(k8s.Service) bool) ([]k8s.Service
}
return services, nil
}
func (c clientMock) GetEndpoints(name, namespace string) (k8s.Endpoints, error) {
for _, endpoints := range c.endpoints {
if endpoints.Namespace == namespace && endpoints.Name == name {
return endpoints, nil
}
}
return k8s.Endpoints{}, nil
}
func (c clientMock) WatchAll(stopCh <-chan bool) (chan interface{}, chan error, error) {
return c.watchChan, make(chan error), nil
}