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globalservice_test.go
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package main
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
type testService struct {
cluster string
name string
namespace string
clusterIP string
ports []int32
}
func createTestService(name, namespace, clusterIP string, ports []int32) *v1.Service {
svcPorts := []v1.ServicePort{}
for _, port := range ports {
svcPorts = append(svcPorts, v1.ServicePort{Port: port})
}
return &v1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: namespace,
},
Spec: v1.ServiceSpec{
Ports: svcPorts,
Selector: map[string]string{"selector": "x"},
ClusterIP: clusterIP,
},
}
}
func createTestStore(t *testing.T, services []testService, topologyAwareHints bool) *GlobalServiceStore {
store := newGlobalServiceStore()
for _, s := range services {
svc := createTestService(s.name, s.namespace, s.clusterIP, s.ports)
_, err := store.AddOrUpdateClusterServiceTarget(svc, s.cluster, topologyAwareHints)
assert.Equal(t, nil, err)
}
return store
}
func TestAddOrUpdateClusterServiceTarget_AddSingleServiceTarget(t *testing.T) {
store := createTestStore(t, []testService{
testService{cluster: "cluster", name: "name", namespace: "namespace", clusterIP: "1.1.1.1", ports: []int32{80}},
}, false)
assert.Equal(t, 1, store.Len())
gsvc, err := store.Get("name", "namespace")
if err != nil {
t.Fatal(err)
}
assert.Equal(t, []string{"cluster"}, gsvc.clusters)
}
func TestAddOrUpdateClusterServiceTarget_AddMultipleServiceTargets(t *testing.T) {
store := createTestStore(t, []testService{
testService{cluster: "a", name: "name", namespace: "namespace", clusterIP: "1.1.1.1", ports: []int32{80}},
testService{cluster: "b", name: "name", namespace: "namespace", clusterIP: "2.2.2.2", ports: []int32{80}},
testService{cluster: "c", name: "name", namespace: "namespace", clusterIP: "3.3.3.3", ports: []int32{80}},
}, false)
assert.Equal(t, 1, store.Len())
gsvc, err := store.Get("name", "namespace")
if err != nil {
t.Fatal(err)
}
assert.Equal(t, []string{"a", "b", "c"}, gsvc.clusters)
}
func TestAddOrUpdateClusterServiceTarget_AddMultipleServices(t *testing.T) {
store := createTestStore(t, []testService{
testService{cluster: "a", name: "a", namespace: "a", clusterIP: "1.1.1.1", ports: []int32{80}},
testService{cluster: "b", name: "b", namespace: "b", clusterIP: "2.2.2.2", ports: []int32{80}},
}, false)
assert.Equal(t, 2, store.Len())
}
func TestAddOrUpdateClusterServiceTarget_HeadlessMisMatch(t *testing.T) {
store := newGlobalServiceStore()
svcA := createTestService("name", "namespace", "1.1.1.1", []int32{80})
clusterA := "a"
_, err := store.AddOrUpdateClusterServiceTarget(svcA, clusterA, false)
assert.Equal(t, nil, err)
svcB := createTestService("name", "namespace", "None", []int32{80})
clusterB := "b"
_, err = store.AddOrUpdateClusterServiceTarget(svcB, clusterB, false)
assert.Equal(t, fmt.Errorf("Mismatch between existing headless service and requested"), err)
}
func TestAddOrUpdateClusterServiceTarget_UpdateFungiblePorts(t *testing.T) {
store := createTestStore(t, []testService{
testService{cluster: "a", name: "name", namespace: "namespace", clusterIP: "1.1.1.1", ports: []int32{80}},
}, false)
svcB := createTestService("name", "namespace", "2.2.2.2", []int32{8080})
clusterB := "b"
_, err := store.AddOrUpdateClusterServiceTarget(svcB, clusterB, false)
if err != nil {
t.Fatal(err)
}
assert.Equal(t, 1, store.Len())
gsvc, err := store.Get("name", "namespace")
if err != nil {
t.Fatal(err)
}
assert.Equal(t, []string{"a", "b"}, gsvc.clusters)
assert.Equal(t, 1, len(gsvc.ports))
assert.Equal(t, int32(8080), gsvc.ports[0].Port)
}
func TestAddOrUpdateClusterServiceTarget_UpdateFungibleTopologyAnnotations(t *testing.T) {
store := createTestStore(t, []testService{
testService{cluster: "a", name: "name", namespace: "namespace", clusterIP: "1.1.1.1", ports: []int32{80}},
}, true)
gsvc, err := store.Get("name", "namespace")
if err != nil {
t.Fatal(err)
}
assert.Equal(t, 2, len(gsvc.annotations))
assert.Equal(t, kubeSeviceTopologyAwareHintsAnnoVal, gsvc.annotations[kubeSeviceTopologyAwareHintsAnno])
// Add a service with topolofy aware flag set to false
svcB := createTestService("name", "namespace", "2.2.2.2", []int32{8080})
clusterB := "b"
_, err = store.AddOrUpdateClusterServiceTarget(svcB, clusterB, false)
if err != nil {
t.Fatal(err)
}
// This should keep a single service in the store, but delete the
// topology aware hints annotation
assert.Equal(t, 1, store.Len())
gsvc, err = store.Get("name", "namespace")
if err != nil {
t.Fatal(err)
}
assert.Equal(t, []string{"a", "b"}, gsvc.clusters)
assert.Equal(t, 1, len(gsvc.annotations))
}
func TestDeleteClusterServiceTarget_DeleteServiceLastTarget(t *testing.T) {
store := createTestStore(t, []testService{
testService{cluster: "cluster", name: "name", namespace: "namespace", clusterIP: "1.1.1.1", ports: []int32{80}},
}, false)
assert.Equal(t, 1, store.Len())
svc := createTestService("name", "namespace", "1.1.1.1", []int32{80})
store.DeleteClusterServiceTarget(svc.Name, svc.Namespace, "cluster")
assert.Equal(t, 0, store.Len())
}
func TestDeleteClusterServiceTarget_DeleteServiceTarget(t *testing.T) {
store := createTestStore(t, []testService{
testService{cluster: "a", name: "name", namespace: "namespace", clusterIP: "1.1.1.1", ports: []int32{80}},
testService{cluster: "b", name: "name", namespace: "namespace", clusterIP: "2.2.2.2", ports: []int32{80}},
}, false)
assert.Equal(t, 1, store.Len())
gsvc, err := store.Get("name", "namespace")
if err != nil {
t.Fatal(err)
}
assert.Equal(t, []string{"a", "b"}, gsvc.clusters)
svcA := createTestService("name", "namespace", "1.1.1.1", []int32{80})
store.DeleteClusterServiceTarget(svcA.Name, svcA.Namespace, "a")
assert.Equal(t, 1, store.Len())
assert.Equal(t, []string{"b"}, gsvc.clusters)
}
func TestDeleteClusterServiceTarget_NotPresent(t *testing.T) {
store := createTestStore(t, []testService{
testService{cluster: "cluster", name: "name", namespace: "namespace", clusterIP: "1.1.1.1", ports: []int32{80}},
}, false)
assert.Equal(t, 1, store.Len())
svcB := createTestService("b", "b", "2.2.2.2", []int32{80})
clusterB := "b"
store.DeleteClusterServiceTarget(svcB.Name, svcB.Namespace, clusterB)
assert.Equal(t, 1, store.Len())
}