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external-dns/source/service_test.go
Nick Jüttner f763d2a413 Move into kubernetes-sigs organization (#1245) 
* Move into kubernetes-sigs organization

* Disable labeler action for forks
2019-11-01 17:10:19 +01:00

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/*
Copyright 2017 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package source
import (
"net"
"testing"
"time"
"k8s.io/apimachinery/pkg/util/wait"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes/fake"
"github.com/kubernetes-sigs/external-dns/endpoint"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/stretchr/testify/suite"
)
type ServiceSuite struct {
suite.Suite
sc Source
fooWithTargets *v1.Service
}
func (suite *ServiceSuite) SetupTest() {
fakeClient := fake.NewSimpleClientset()
var err error
suite.sc, err = NewServiceSource(
fakeClient,
"",
"",
"{{.Name}}",
false,
"",
false,
false,
[]string{},
false,
)
suite.fooWithTargets = &v1.Service{
Spec: v1.ServiceSpec{
Type: v1.ServiceTypeLoadBalancer,
},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "foo-with-targets",
Annotations: map[string]string{},
},
Status: v1.ServiceStatus{
LoadBalancer: v1.LoadBalancerStatus{
Ingress: []v1.LoadBalancerIngress{
{IP: "8.8.8.8"},
{Hostname: "foo"},
},
},
},
}
suite.NoError(err, "should initialize service source")
_, err = fakeClient.CoreV1().Services(suite.fooWithTargets.Namespace).Create(suite.fooWithTargets)
suite.NoError(err, "should successfully create service")
}
func (suite *ServiceSuite) TestResourceLabelIsSet() {
endpoints, _ := suite.sc.Endpoints()
for _, ep := range endpoints {
suite.Equal("service/default/foo-with-targets", ep.Labels[endpoint.ResourceLabelKey], "should set correct resource label")
}
}
func TestServiceSource(t *testing.T) {
suite.Run(t, new(ServiceSuite))
t.Run("Interface", testServiceSourceImplementsSource)
t.Run("NewServiceSource", testServiceSourceNewServiceSource)
t.Run("Endpoints", testServiceSourceEndpoints)
}
// testServiceSourceImplementsSource tests that serviceSource is a valid Source.
func testServiceSourceImplementsSource(t *testing.T) {
assert.Implements(t, (*Source)(nil), new(serviceSource))
}
// testServiceSourceNewServiceSource tests that NewServiceSource doesn't return an error.
func testServiceSourceNewServiceSource(t *testing.T) {
for _, ti := range []struct {
title string
annotationFilter string
fqdnTemplate string
serviceTypesFilter []string
expectError bool
}{
{
title: "invalid template",
expectError: true,
fqdnTemplate: "{{.Name",
},
{
title: "valid empty template",
expectError: false,
},
{
title: "valid template",
expectError: false,
fqdnTemplate: "{{.Name}}-{{.Namespace}}.ext-dns.test.com",
},
{
title: "non-empty annotation filter label",
expectError: false,
annotationFilter: "kubernetes.io/ingress.class=nginx",
},
{
title: "non-empty service types filter",
expectError: false,
serviceTypesFilter: []string{string(v1.ServiceTypeClusterIP)},
},
} {
t.Run(ti.title, func(t *testing.T) {
_, err := NewServiceSource(
fake.NewSimpleClientset(),
"",
ti.annotationFilter,
ti.fqdnTemplate,
false,
"",
false,
false,
ti.serviceTypesFilter,
false,
)
if ti.expectError {
assert.Error(t, err)
} else {
assert.NoError(t, err)
}
})
}
}
// testServiceSourceEndpoints tests that various services generate the correct endpoints.
func testServiceSourceEndpoints(t *testing.T) {
for _, tc := range []struct {
title string
targetNamespace string
annotationFilter string
svcNamespace string
svcName string
svcType v1.ServiceType
compatibility string
fqdnTemplate string
combineFQDNAndAnnotation bool
ignoreHostnameAnnotation bool
labels map[string]string
annotations map[string]string
clusterIP string
lbs []string
serviceTypesFilter []string
expected []*endpoint.Endpoint
expectError bool
}{
{
"no annotated services return no endpoints",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"no annotated services return no endpoints when ignoreing annotations",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
true,
map[string]string{},
map[string]string{},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"annotated services return an endpoint with target IP",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"hostname annotation on services is ignored",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
true,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"annotated ClusterIp aren't processed without explicit authorization",
"",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"1.2.3.4",
[]string{},
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"FQDN template with multiple hostnames return an endpoint with target IP",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"{{.Name}}.fqdn.org,{{.Name}}.fqdn.com",
false,
false,
map[string]string{},
map[string]string{},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.fqdn.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "foo.fqdn.com", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"FQDN template with multiple hostnames return an endpoint with target IP when ignoreing annotations",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"{{.Name}}.fqdn.org,{{.Name}}.fqdn.com",
false,
true,
map[string]string{},
map[string]string{},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.fqdn.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "foo.fqdn.com", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"FQDN template and annotation both with multiple hostnames return an endpoint with target IP",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"{{.Name}}.fqdn.org,{{.Name}}.fqdn.com",
true,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org., bar.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "bar.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "foo.fqdn.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "foo.fqdn.com", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"FQDN template and annotation both with multiple hostnames while ignoring annotations will only return FQDN endpoints",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"{{.Name}}.fqdn.org,{{.Name}}.fqdn.com",
true,
true,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org., bar.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.fqdn.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "foo.fqdn.com", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"annotated services with multiple hostnames return an endpoint with target IP",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org., bar.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "bar.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"annotated services with multiple hostnames and without trailing period return an endpoint with target IP",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org, bar.example.org",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "bar.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"annotated services return an endpoint with target hostname",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"lb.example.com"}, // Kubernetes omits the trailing dot
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"lb.example.com"}},
},
false,
},
{
"annotated services can omit trailing dot",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org", // Trailing dot is omitted
},
"",
[]string{"1.2.3.4", "lb.example.com"}, // Kubernetes omits the trailing dot
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "foo.example.org", Targets: endpoint.Targets{"lb.example.com"}},
},
false,
},
{
"our controller type is dns-controller",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
controllerAnnotationKey: controllerAnnotationValue,
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"different controller types are ignored even (with template specified)",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"{{.Name}}.ext-dns.test.com",
false,
false,
map[string]string{},
map[string]string{
controllerAnnotationKey: "some-other-tool",
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"services are found in target namespace",
"testing",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"services that are not in target namespace are ignored",
"testing",
"",
"other-testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"services are found in all namespaces",
"",
"",
"other-testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"valid matching annotation filter expression",
"",
"service.beta.kubernetes.io/external-traffic in (Global, OnlyLocal)",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
"service.beta.kubernetes.io/external-traffic": "OnlyLocal",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"valid non-matching annotation filter expression",
"",
"service.beta.kubernetes.io/external-traffic in (Global, OnlyLocal)",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
"service.beta.kubernetes.io/external-traffic": "SomethingElse",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"invalid annotation filter expression",
"",
"service.beta.kubernetes.io/external-traffic in (Global OnlyLocal)",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
"service.beta.kubernetes.io/external-traffic": "OnlyLocal",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{},
true,
},
{
"valid matching annotation filter label",
"",
"service.beta.kubernetes.io/external-traffic=Global",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
"service.beta.kubernetes.io/external-traffic": "Global",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"valid non-matching annotation filter label",
"",
"service.beta.kubernetes.io/external-traffic=Global",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
"service.beta.kubernetes.io/external-traffic": "OnlyLocal",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"no external entrypoints return no endpoints",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{},
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"multiple external entrypoints return a single endpoint with multiple targets",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4", "8.8.8.8"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4", "8.8.8.8"}},
},
false,
},
{
"services annotated with legacy mate annotations are ignored in default mode",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
"zalando.org/dnsname": "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"services annotated with legacy mate annotations return an endpoint in compatibility mode",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"mate",
"",
false,
false,
map[string]string{},
map[string]string{
"zalando.org/dnsname": "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"services annotated with legacy molecule annotations return an endpoint in compatibility mode",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"molecule",
"",
false,
false,
map[string]string{
"dns": "route53",
},
map[string]string{
"domainName": "foo.example.org., bar.example.org",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "bar.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"not annotated services with set fqdnTemplate return an endpoint with target IP",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"{{.Name}}.bar.example.com",
false,
false,
map[string]string{},
map[string]string{},
"",
[]string{"1.2.3.4", "elb.com"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.bar.example.com", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "foo.bar.example.com", Targets: endpoint.Targets{"elb.com"}},
},
false,
},
{
"annotated services with set fqdnTemplate annotation takes precedence",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"{{.Name}}.bar.example.com",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4", "elb.com"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
{DNSName: "foo.example.org", Targets: endpoint.Targets{"elb.com"}},
},
false,
},
{
"compatibility annotated services with tmpl. compatibility takes precedence",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"mate",
"{{.Name}}.bar.example.com",
false,
false,
map[string]string{},
map[string]string{
"zalando.org/dnsname": "mate.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "mate.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"not annotated services with unknown tmpl field should not return anything",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"{{.Calibre}}.bar.example.com",
false,
false,
map[string]string{},
map[string]string{},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{},
true,
},
{
"ttl not annotated should have RecordTTL.IsConfigured set to false",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}, RecordTTL: endpoint.TTL(0)},
},
false,
},
{
"ttl annotated but invalid should have RecordTTL.IsConfigured set to false",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
ttlAnnotationKey: "foo",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}, RecordTTL: endpoint.TTL(0)},
},
false,
},
{
"ttl annotated and is valid should set Record.TTL",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
ttlAnnotationKey: "10",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}, RecordTTL: endpoint.TTL(10)},
},
false,
},
{
"Negative ttl is not valid",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
ttlAnnotationKey: "-10",
},
"",
[]string{"1.2.3.4"},
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}, RecordTTL: endpoint.TTL(0)},
},
false,
},
{
"filter on service types should include matching services",
"",
"",
"testing",
"foo",
v1.ServiceTypeLoadBalancer,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{string(v1.ServiceTypeLoadBalancer)},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"filter on service types should exclude non-matching services",
"",
"",
"testing",
"foo",
v1.ServiceTypeNodePort,
"",
"",
false,
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"",
[]string{"1.2.3.4"},
[]string{string(v1.ServiceTypeLoadBalancer)},
[]*endpoint.Endpoint{},
false,
},
} {
t.Run(tc.title, func(t *testing.T) {
// Create a Kubernetes testing client
kubernetes := fake.NewSimpleClientset()
// Create a service to test against
ingresses := []v1.LoadBalancerIngress{}
for _, lb := range tc.lbs {
if net.ParseIP(lb) != nil {
ingresses = append(ingresses, v1.LoadBalancerIngress{IP: lb})
} else {
ingresses = append(ingresses, v1.LoadBalancerIngress{Hostname: lb})
}
}
service := &v1.Service{
Spec: v1.ServiceSpec{
Type: tc.svcType,
ClusterIP: tc.clusterIP,
},
ObjectMeta: metav1.ObjectMeta{
Namespace: tc.svcNamespace,
Name: tc.svcName,
Labels: tc.labels,
Annotations: tc.annotations,
},
Status: v1.ServiceStatus{
LoadBalancer: v1.LoadBalancerStatus{
Ingress: ingresses,
},
},
}
_, err := kubernetes.CoreV1().Services(service.Namespace).Create(service)
require.NoError(t, err)
// Create our object under test and get the endpoints.
client, _ := NewServiceSource(
kubernetes,
tc.targetNamespace,
tc.annotationFilter,
tc.fqdnTemplate,
tc.combineFQDNAndAnnotation,
tc.compatibility,
false,
false,
tc.serviceTypesFilter,
tc.ignoreHostnameAnnotation,
)
require.NoError(t, err)
var res []*endpoint.Endpoint
// wait up to a few seconds for new resources to appear in informer cache.
err = wait.Poll(time.Second, 3*time.Second, func() (bool, error) {
res, err = client.Endpoints()
if err != nil {
// stop waiting if we get an error
return true, err
}
return len(res) >= len(tc.expected), nil
})
if tc.expectError {
require.Error(t, err)
} else {
require.NoError(t, err)
}
// Validate returned endpoints against desired endpoints.
validateEndpoints(t, res, tc.expected)
})
}
}
// testServiceSourceEndpoints tests that various services generate the correct endpoints.
func TestClusterIpServices(t *testing.T) {
for _, tc := range []struct {
title string
targetNamespace string
annotationFilter string
svcNamespace string
svcName string
svcType v1.ServiceType
compatibility string
fqdnTemplate string
ignoreHostnameAnnotation bool
labels map[string]string
annotations map[string]string
clusterIP string
lbs []string
expected []*endpoint.Endpoint
expectError bool
}{
{
"annotated ClusterIp services return an endpoint with Cluster IP",
"",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"1.2.3.4",
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.example.org", Targets: endpoint.Targets{"1.2.3.4"}},
},
false,
},
{
"hostname annotated ClusterIp services are ignored",
"",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
true,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
"1.2.3.4",
[]string{},
[]*endpoint.Endpoint{},
false,
},
{
"non-annotated ClusterIp services with set fqdnTemplate return an endpoint with target IP",
"",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"{{.Name}}.bar.example.com",
false,
map[string]string{},
map[string]string{},
"4.5.6.7",
[]string{},
[]*endpoint.Endpoint{
{DNSName: "foo.bar.example.com", Targets: endpoint.Targets{"4.5.6.7"}},
},
false,
},
{
"Headless services do not generate endpoints",
"",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
map[string]string{},
map[string]string{},
v1.ClusterIPNone,
[]string{},
[]*endpoint.Endpoint{},
false,
},
} {
t.Run(tc.title, func(t *testing.T) {
// Create a Kubernetes testing client
kubernetes := fake.NewSimpleClientset()
// Create a service to test against
ingresses := []v1.LoadBalancerIngress{}
for _, lb := range tc.lbs {
if net.ParseIP(lb) != nil {
ingresses = append(ingresses, v1.LoadBalancerIngress{IP: lb})
} else {
ingresses = append(ingresses, v1.LoadBalancerIngress{Hostname: lb})
}
}
service := &v1.Service{
Spec: v1.ServiceSpec{
Type: tc.svcType,
ClusterIP: tc.clusterIP,
},
ObjectMeta: metav1.ObjectMeta{
Namespace: tc.svcNamespace,
Name: tc.svcName,
Labels: tc.labels,
Annotations: tc.annotations,
},
Status: v1.ServiceStatus{
LoadBalancer: v1.LoadBalancerStatus{
Ingress: ingresses,
},
},
}
_, err := kubernetes.CoreV1().Services(service.Namespace).Create(service)
require.NoError(t, err)
// Create our object under test and get the endpoints.
client, _ := NewServiceSource(
kubernetes,
tc.targetNamespace,
tc.annotationFilter,
tc.fqdnTemplate,
false,
tc.compatibility,
true,
false,
[]string{},
tc.ignoreHostnameAnnotation,
)
require.NoError(t, err)
endpoints, err := client.Endpoints()
if tc.expectError {
require.Error(t, err)
} else {
require.NoError(t, err)
}
// Validate returned endpoints against desired endpoints.
validateEndpoints(t, endpoints, tc.expected)
})
}
}
// testNodePortServices tests that various services generate the correct endpoints.
func TestNodePortServices(t *testing.T) {
for _, tc := range []struct {
title string
targetNamespace string
annotationFilter string
svcNamespace string
svcName string
svcType v1.ServiceType
svcTrafficPolicy v1.ServiceExternalTrafficPolicyType
compatibility string
fqdnTemplate string
ignoreHostnameAnnotation bool
labels map[string]string
annotations map[string]string
lbs []string
expected []*endpoint.Endpoint
expectError bool
nodes []*v1.Node
podnames []string
nodeIndex []int
phases []v1.PodPhase
}{
{
"annotated NodePort services return an endpoint with IP addresses of the cluster's nodes",
"",
"",
"testing",
"foo",
v1.ServiceTypeNodePort,
v1.ServiceExternalTrafficPolicyTypeCluster,
"",
"",
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
nil,
[]*endpoint.Endpoint{
{DNSName: "_30192._tcp.foo.example.org", Targets: endpoint.Targets{"0 50 30192 foo.example.org"}, RecordType: endpoint.RecordTypeSRV},
{DNSName: "foo.example.org", Targets: endpoint.Targets{"54.10.11.1", "54.10.11.2"}, RecordType: endpoint.RecordTypeA},
},
false,
[]*v1.Node{{
ObjectMeta: metav1.ObjectMeta{
Name: "node1",
},
Status: v1.NodeStatus{
Addresses: []v1.NodeAddress{
{Type: v1.NodeExternalIP, Address: "54.10.11.1"},
{Type: v1.NodeInternalIP, Address: "10.0.1.1"},
},
},
}, {
ObjectMeta: metav1.ObjectMeta{
Name: "node2",
},
Status: v1.NodeStatus{
Addresses: []v1.NodeAddress{
{Type: v1.NodeExternalIP, Address: "54.10.11.2"},
{Type: v1.NodeInternalIP, Address: "10.0.1.2"},
},
},
}},
[]string{},
[]int{},
[]v1.PodPhase{},
},
{
"hostname annotated NodePort services are ignored",
"",
"",
"testing",
"foo",
v1.ServiceTypeNodePort,
v1.ServiceExternalTrafficPolicyTypeCluster,
"",
"",
true,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
nil,
[]*endpoint.Endpoint{},
false,
[]*v1.Node{{
ObjectMeta: metav1.ObjectMeta{
Name: "node1",
},
Status: v1.NodeStatus{
Addresses: []v1.NodeAddress{
{Type: v1.NodeExternalIP, Address: "54.10.11.1"},
{Type: v1.NodeInternalIP, Address: "10.0.1.1"},
},
},
}, {
ObjectMeta: metav1.ObjectMeta{
Name: "node2",
},
Status: v1.NodeStatus{
Addresses: []v1.NodeAddress{
{Type: v1.NodeExternalIP, Address: "54.10.11.2"},
{Type: v1.NodeInternalIP, Address: "10.0.1.2"},
},
},
}},
[]string{},
[]int{},
[]v1.PodPhase{},
},
{
"non-annotated NodePort services with set fqdnTemplate return an endpoint with target IP",
"",
"",
"testing",
"foo",
v1.ServiceTypeNodePort,
v1.ServiceExternalTrafficPolicyTypeCluster,
"",
"{{.Name}}.bar.example.com",
false,
map[string]string{},
map[string]string{},
nil,
[]*endpoint.Endpoint{
{DNSName: "_30192._tcp.foo.bar.example.com", Targets: endpoint.Targets{"0 50 30192 foo.bar.example.com"}, RecordType: endpoint.RecordTypeSRV},
{DNSName: "foo.bar.example.com", Targets: endpoint.Targets{"54.10.11.1", "54.10.11.2"}, RecordType: endpoint.RecordTypeA},
},
false,
[]*v1.Node{{
ObjectMeta: metav1.ObjectMeta{
Name: "node1",
},
Status: v1.NodeStatus{
Addresses: []v1.NodeAddress{
{Type: v1.NodeExternalIP, Address: "54.10.11.1"},
{Type: v1.NodeInternalIP, Address: "10.0.1.1"},
},
},
}, {
ObjectMeta: metav1.ObjectMeta{
Name: "node2",
},
Status: v1.NodeStatus{
Addresses: []v1.NodeAddress{
{Type: v1.NodeExternalIP, Address: "54.10.11.2"},
{Type: v1.NodeInternalIP, Address: "10.0.1.2"},
},
},
}},
[]string{},
[]int{},
[]v1.PodPhase{},
},
{
"annotated NodePort services return an endpoint with IP addresses of the private cluster's nodes",
"",
"",
"testing",
"foo",
v1.ServiceTypeNodePort,
v1.ServiceExternalTrafficPolicyTypeCluster,
"",
"",
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
nil,
[]*endpoint.Endpoint{
{DNSName: "_30192._tcp.foo.example.org", Targets: endpoint.Targets{"0 50 30192 foo.example.org"}, RecordType: endpoint.RecordTypeSRV},
{DNSName: "foo.example.org", Targets: endpoint.Targets{"10.0.1.1", "10.0.1.2"}, RecordType: endpoint.RecordTypeA},
},
false,
[]*v1.Node{{
ObjectMeta: metav1.ObjectMeta{
Name: "node1",
},
Status: v1.NodeStatus{
Addresses: []v1.NodeAddress{
{Type: v1.NodeInternalIP, Address: "10.0.1.1"},
},
},
}, {
ObjectMeta: metav1.ObjectMeta{
Name: "node2",
},
Status: v1.NodeStatus{
Addresses: []v1.NodeAddress{
{Type: v1.NodeInternalIP, Address: "10.0.1.2"},
},
},
}},
[]string{},
[]int{},
[]v1.PodPhase{},
},
{
"annotated NodePort services with ExternalTrafficPolicy=Local return an endpoint with IP addresses of the cluster's nodes where pods is running only",
"",
"",
"testing",
"foo",
v1.ServiceTypeNodePort,
v1.ServiceExternalTrafficPolicyTypeLocal,
"",
"",
false,
map[string]string{},
map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
nil,
[]*endpoint.Endpoint{
{DNSName: "_30192._tcp.foo.example.org", Targets: endpoint.Targets{"0 50 30192 foo.example.org"}, RecordType: endpoint.RecordTypeSRV},
{DNSName: "foo.example.org", Targets: endpoint.Targets{"54.10.11.2"}, RecordType: endpoint.RecordTypeA},
},
false,
[]*v1.Node{{
ObjectMeta: metav1.ObjectMeta{
Name: "node1",
},
Status: v1.NodeStatus{
Addresses: []v1.NodeAddress{
{Type: v1.NodeExternalIP, Address: "54.10.11.1"},
{Type: v1.NodeInternalIP, Address: "10.0.1.1"},
},
},
}, {
ObjectMeta: metav1.ObjectMeta{
Name: "node2",
},
Status: v1.NodeStatus{
Addresses: []v1.NodeAddress{
{Type: v1.NodeExternalIP, Address: "54.10.11.2"},
{Type: v1.NodeInternalIP, Address: "10.0.1.2"},
},
},
}},
[]string{"master-0"},
[]int{1},
[]v1.PodPhase{v1.PodRunning},
},
} {
t.Run(tc.title, func(t *testing.T) {
// Create a Kubernetes testing client
kubernetes := fake.NewSimpleClientset()
// Create the nodes
for _, node := range tc.nodes {
if _, err := kubernetes.Core().Nodes().Create(node); err != nil {
t.Fatal(err)
}
}
// Create pods
for i, podname := range tc.podnames {
pod := &v1.Pod{
Spec: v1.PodSpec{
Containers: []v1.Container{},
Hostname: podname,
NodeName: tc.nodes[tc.nodeIndex[i]].Name,
},
ObjectMeta: metav1.ObjectMeta{
Namespace: tc.svcNamespace,
Name: podname,
Labels: tc.labels,
Annotations: tc.annotations,
},
Status: v1.PodStatus{
Phase: tc.phases[i],
},
}
_, err := kubernetes.CoreV1().Pods(tc.svcNamespace).Create(pod)
require.NoError(t, err)
}
// Create a service to test against
service := &v1.Service{
Spec: v1.ServiceSpec{
Type: tc.svcType,
ExternalTrafficPolicy: tc.svcTrafficPolicy,
Ports: []v1.ServicePort{
{
NodePort: 30192,
},
},
},
ObjectMeta: metav1.ObjectMeta{
Namespace: tc.svcNamespace,
Name: tc.svcName,
Labels: tc.labels,
Annotations: tc.annotations,
},
}
_, err := kubernetes.CoreV1().Services(service.Namespace).Create(service)
require.NoError(t, err)
// Create our object under test and get the endpoints.
client, _ := NewServiceSource(
kubernetes,
tc.targetNamespace,
tc.annotationFilter,
tc.fqdnTemplate,
false,
tc.compatibility,
true,
false,
[]string{},
tc.ignoreHostnameAnnotation,
)
require.NoError(t, err)
endpoints, err := client.Endpoints()
if tc.expectError {
require.Error(t, err)
} else {
require.NoError(t, err)
}
// Validate returned endpoints against desired endpoints.
validateEndpoints(t, endpoints, tc.expected)
})
}
}
// TestHeadlessServices tests that headless services generate the correct endpoints.
func TestHeadlessServices(t *testing.T) {
for _, tc := range []struct {
title string
targetNamespace string
svcNamespace string
svcName string
svcType v1.ServiceType
compatibility string
fqdnTemplate string
ignoreHostnameAnnotation bool
labels map[string]string
annotations map[string]string
clusterIP string
podIPs []string
selector map[string]string
lbs []string
podnames []string
hostnames []string
phases []v1.PodPhase
expected []*endpoint.Endpoint
expectError bool
}{
{
"annotated Headless services return endpoints for each selected Pod",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
},
v1.ClusterIPNone,
[]string{"1.1.1.1", "1.1.1.2"},
map[string]string{
"component": "foo",
},
[]string{},
[]string{"foo-0", "foo-1"},
[]string{"foo-0", "foo-1"},
[]v1.PodPhase{v1.PodRunning, v1.PodRunning},
[]*endpoint.Endpoint{
{DNSName: "foo-0.service.example.org", Targets: endpoint.Targets{"1.1.1.1"}},
{DNSName: "foo-1.service.example.org", Targets: endpoint.Targets{"1.1.1.2"}},
{DNSName: "service.example.org", Targets: endpoint.Targets{"1.1.1.1", "1.1.1.2"}},
},
false,
},
{
"hostname annotated Headless services are ignored",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
true,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
},
v1.ClusterIPNone,
[]string{"1.1.1.1", "1.1.1.2"},
map[string]string{
"component": "foo",
},
[]string{},
[]string{"foo-0", "foo-1"},
[]string{"foo-0", "foo-1"},
[]v1.PodPhase{v1.PodRunning, v1.PodRunning},
[]*endpoint.Endpoint{},
false,
},
{
"annotated Headless services return endpoints with TTL for each selected Pod",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
ttlAnnotationKey: "1",
},
v1.ClusterIPNone,
[]string{"1.1.1.1", "1.1.1.2"},
map[string]string{
"component": "foo",
},
[]string{},
[]string{"foo-0", "foo-1"},
[]string{"foo-0", "foo-1"},
[]v1.PodPhase{v1.PodRunning, v1.PodRunning},
[]*endpoint.Endpoint{
{DNSName: "foo-0.service.example.org", Targets: endpoint.Targets{"1.1.1.1"}, RecordTTL: endpoint.TTL(1)},
{DNSName: "foo-1.service.example.org", Targets: endpoint.Targets{"1.1.1.2"}, RecordTTL: endpoint.TTL(1)},
{DNSName: "service.example.org", Targets: endpoint.Targets{"1.1.1.1", "1.1.1.2"}, RecordTTL: endpoint.TTL(1)},
},
false,
},
{
"annotated Headless services return endpoints for each selected Pod, which are in running state",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
},
v1.ClusterIPNone,
[]string{"1.1.1.1", "1.1.1.2"},
map[string]string{
"component": "foo",
},
[]string{},
[]string{"foo-0", "foo-1"},
[]string{"foo-0", "foo-1"},
[]v1.PodPhase{v1.PodRunning, v1.PodFailed},
[]*endpoint.Endpoint{
{DNSName: "foo-0.service.example.org", Targets: endpoint.Targets{"1.1.1.1"}},
{DNSName: "service.example.org", Targets: endpoint.Targets{"1.1.1.1"}},
},
false,
},
{
"annotated Headless services return endpoints for pods missing hostname",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
},
v1.ClusterIPNone,
[]string{"1.1.1.1", "1.1.1.2"},
map[string]string{
"component": "foo",
},
[]string{},
[]string{"foo-0", "foo-1"},
[]string{"", ""},
[]v1.PodPhase{v1.PodRunning, v1.PodRunning},
[]*endpoint.Endpoint{
{DNSName: "service.example.org", Targets: endpoint.Targets{"1.1.1.1", "1.1.1.2"}},
},
false,
},
} {
t.Run(tc.title, func(t *testing.T) {
// Create a Kubernetes testing client
kubernetes := fake.NewSimpleClientset()
service := &v1.Service{
Spec: v1.ServiceSpec{
Type: tc.svcType,
ClusterIP: tc.clusterIP,
Selector: tc.selector,
},
ObjectMeta: metav1.ObjectMeta{
Namespace: tc.svcNamespace,
Name: tc.svcName,
Labels: tc.labels,
Annotations: tc.annotations,
},
Status: v1.ServiceStatus{},
}
_, err := kubernetes.CoreV1().Services(service.Namespace).Create(service)
require.NoError(t, err)
for i, podname := range tc.podnames {
pod := &v1.Pod{
Spec: v1.PodSpec{
Containers: []v1.Container{},
Hostname: tc.hostnames[i],
},
ObjectMeta: metav1.ObjectMeta{
Namespace: tc.svcNamespace,
Name: podname,
Labels: tc.labels,
Annotations: tc.annotations,
},
Status: v1.PodStatus{
PodIP: tc.podIPs[i],
Phase: tc.phases[i],
},
}
_, err = kubernetes.CoreV1().Pods(tc.svcNamespace).Create(pod)
require.NoError(t, err)
}
// Create our object under test and get the endpoints.
client, _ := NewServiceSource(
kubernetes,
tc.targetNamespace,
"",
tc.fqdnTemplate,
false,
tc.compatibility,
true,
false,
[]string{},
tc.ignoreHostnameAnnotation,
)
require.NoError(t, err)
endpoints, err := client.Endpoints()
if tc.expectError {
require.Error(t, err)
} else {
require.NoError(t, err)
}
// Validate returned endpoints against desired endpoints.
validateEndpoints(t, endpoints, tc.expected)
})
}
}
// TestHeadlessServices tests that headless services generate the correct endpoints.
func TestHeadlessServicesHostIP(t *testing.T) {
for _, tc := range []struct {
title string
targetNamespace string
svcNamespace string
svcName string
svcType v1.ServiceType
compatibility string
fqdnTemplate string
ignoreHostnameAnnotation bool
labels map[string]string
annotations map[string]string
clusterIP string
hostIPs []string
selector map[string]string
lbs []string
podnames []string
hostnames []string
phases []v1.PodPhase
expected []*endpoint.Endpoint
expectError bool
}{
{
"annotated Headless services return endpoints for each selected Pod",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
},
v1.ClusterIPNone,
[]string{"1.1.1.1", "1.1.1.2"},
map[string]string{
"component": "foo",
},
[]string{},
[]string{"foo-0", "foo-1"},
[]string{"foo-0", "foo-1"},
[]v1.PodPhase{v1.PodRunning, v1.PodRunning},
[]*endpoint.Endpoint{
{DNSName: "foo-0.service.example.org", Targets: endpoint.Targets{"1.1.1.1"}},
{DNSName: "foo-1.service.example.org", Targets: endpoint.Targets{"1.1.1.2"}},
{DNSName: "service.example.org", Targets: endpoint.Targets{"1.1.1.1", "1.1.1.2"}},
},
false,
},
{
"hostname annotated Headless services are ignored",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
true,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
},
v1.ClusterIPNone,
[]string{"1.1.1.1", "1.1.1.2"},
map[string]string{
"component": "foo",
},
[]string{},
[]string{"foo-0", "foo-1"},
[]string{"foo-0", "foo-1"},
[]v1.PodPhase{v1.PodRunning, v1.PodRunning},
[]*endpoint.Endpoint{},
false,
},
{
"annotated Headless services return endpoints with TTL for each selected Pod",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
ttlAnnotationKey: "1",
},
v1.ClusterIPNone,
[]string{"1.1.1.1", "1.1.1.2"},
map[string]string{
"component": "foo",
},
[]string{},
[]string{"foo-0", "foo-1"},
[]string{"foo-0", "foo-1"},
[]v1.PodPhase{v1.PodRunning, v1.PodRunning},
[]*endpoint.Endpoint{
{DNSName: "foo-0.service.example.org", Targets: endpoint.Targets{"1.1.1.1"}, RecordTTL: endpoint.TTL(1)},
{DNSName: "foo-1.service.example.org", Targets: endpoint.Targets{"1.1.1.2"}, RecordTTL: endpoint.TTL(1)},
{DNSName: "service.example.org", Targets: endpoint.Targets{"1.1.1.1", "1.1.1.2"}, RecordTTL: endpoint.TTL(1)},
},
false,
},
{
"annotated Headless services return endpoints for each selected Pod, which are in running state",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
},
v1.ClusterIPNone,
[]string{"1.1.1.1", "1.1.1.2"},
map[string]string{
"component": "foo",
},
[]string{},
[]string{"foo-0", "foo-1"},
[]string{"foo-0", "foo-1"},
[]v1.PodPhase{v1.PodRunning, v1.PodFailed},
[]*endpoint.Endpoint{
{DNSName: "foo-0.service.example.org", Targets: endpoint.Targets{"1.1.1.1"}},
{DNSName: "service.example.org", Targets: endpoint.Targets{"1.1.1.1"}},
},
false,
},
{
"annotated Headless services return endpoints for pods missing hostname",
"",
"testing",
"foo",
v1.ServiceTypeClusterIP,
"",
"",
false,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
},
v1.ClusterIPNone,
[]string{"1.1.1.1", "1.1.1.2"},
map[string]string{
"component": "foo",
},
[]string{},
[]string{"foo-0", "foo-1"},
[]string{"", ""},
[]v1.PodPhase{v1.PodRunning, v1.PodRunning},
[]*endpoint.Endpoint{
{DNSName: "service.example.org", Targets: endpoint.Targets{"1.1.1.1", "1.1.1.2"}},
},
false,
},
} {
t.Run(tc.title, func(t *testing.T) {
// Create a Kubernetes testing client
kubernetes := fake.NewSimpleClientset()
service := &v1.Service{
Spec: v1.ServiceSpec{
Type: tc.svcType,
ClusterIP: tc.clusterIP,
Selector: tc.selector,
},
ObjectMeta: metav1.ObjectMeta{
Namespace: tc.svcNamespace,
Name: tc.svcName,
Labels: tc.labels,
Annotations: tc.annotations,
},
Status: v1.ServiceStatus{},
}
_, err := kubernetes.CoreV1().Services(service.Namespace).Create(service)
require.NoError(t, err)
for i, podname := range tc.podnames {
pod := &v1.Pod{
Spec: v1.PodSpec{
Containers: []v1.Container{},
Hostname: tc.hostnames[i],
},
ObjectMeta: metav1.ObjectMeta{
Namespace: tc.svcNamespace,
Name: podname,
Labels: tc.labels,
Annotations: tc.annotations,
},
Status: v1.PodStatus{
HostIP: tc.hostIPs[i],
Phase: tc.phases[i],
},
}
_, err = kubernetes.CoreV1().Pods(tc.svcNamespace).Create(pod)
require.NoError(t, err)
}
// Create our object under test and get the endpoints.
client, _ := NewServiceSource(
kubernetes,
tc.targetNamespace,
"",
tc.fqdnTemplate,
false,
tc.compatibility,
true,
true,
[]string{},
tc.ignoreHostnameAnnotation,
)
require.NoError(t, err)
endpoints, err := client.Endpoints()
if tc.expectError {
require.Error(t, err)
} else {
require.NoError(t, err)
}
// Validate returned endpoints against desired endpoints.
validateEndpoints(t, endpoints, tc.expected)
})
}
}
// TestExternalServices tests that external services generate the correct endpoints.
func TestExternalServices(t *testing.T) {
for _, tc := range []struct {
title string
targetNamespace string
svcNamespace string
svcName string
svcType v1.ServiceType
compatibility string
fqdnTemplate string
ignoreHostnameAnnotation bool
labels map[string]string
annotations map[string]string
externalName string
expected []*endpoint.Endpoint
expectError bool
}{
{
"external services return an A endpoint for the external name that is an IP address",
"",
"testing",
"foo",
v1.ServiceTypeExternalName,
"",
"",
false,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
},
"111.111.111.111",
[]*endpoint.Endpoint{
{DNSName: "service.example.org", Targets: endpoint.Targets{"111.111.111.111"}, RecordType: endpoint.RecordTypeA},
},
false,
},
{
"external services return a CNAME endpoint for the external name that is a domain",
"",
"testing",
"foo",
v1.ServiceTypeExternalName,
"",
"",
false,
map[string]string{"component": "foo"},
map[string]string{
hostnameAnnotationKey: "service.example.org",
},
"remote.example.com",
[]*endpoint.Endpoint{
{DNSName: "service.example.org", Targets: endpoint.Targets{"remote.example.com"}, RecordType: endpoint.RecordTypeCNAME},
},
false,
},
} {
t.Run(tc.title, func(t *testing.T) {
// Create a Kubernetes testing client
kubernetes := fake.NewSimpleClientset()
service := &v1.Service{
Spec: v1.ServiceSpec{
Type: tc.svcType,
ExternalName: tc.externalName,
},
ObjectMeta: metav1.ObjectMeta{
Namespace: tc.svcNamespace,
Name: tc.svcName,
Labels: tc.labels,
Annotations: tc.annotations,
},
Status: v1.ServiceStatus{},
}
_, err := kubernetes.CoreV1().Services(service.Namespace).Create(service)
require.NoError(t, err)
// Create our object under test and get the endpoints.
client, _ := NewServiceSource(
kubernetes,
tc.targetNamespace,
"",
tc.fqdnTemplate,
false,
tc.compatibility,
true,
false,
[]string{},
tc.ignoreHostnameAnnotation,
)
require.NoError(t, err)
endpoints, err := client.Endpoints()
if tc.expectError {
require.Error(t, err)
} else {
require.NoError(t, err)
}
// Validate returned endpoints against desired endpoints.
validateEndpoints(t, endpoints, tc.expected)
})
}
}
func BenchmarkServiceEndpoints(b *testing.B) {
kubernetes := fake.NewSimpleClientset()
service := &v1.Service{
ObjectMeta: metav1.ObjectMeta{
Namespace: "testing",
Name: "foo",
Annotations: map[string]string{
hostnameAnnotationKey: "foo.example.org.",
},
},
Status: v1.ServiceStatus{
LoadBalancer: v1.LoadBalancerStatus{
Ingress: []v1.LoadBalancerIngress{
{IP: "1.2.3.4"},
{IP: "8.8.8.8"},
},
},
},
}
_, err := kubernetes.CoreV1().Services(service.Namespace).Create(service)
require.NoError(b, err)
client, err := NewServiceSource(kubernetes, v1.NamespaceAll, "", "", false, "", false, false, []string{}, false)
require.NoError(b, err)
for i := 0; i < b.N; i++ {
_, err := client.Endpoints()
require.NoError(b, err)
}
}
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