mirror of
https://github.com/kubernetes-sigs/external-dns.git
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698 lines
19 KiB
Go
698 lines
19 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package source
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import (
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"context"
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"fmt"
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"testing"
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ambassador "github.com/datawire/ambassador/pkg/api/getambassador.io/v2"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/stretchr/testify/suite"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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fakeDynamic "k8s.io/client-go/dynamic/fake"
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fakeKube "k8s.io/client-go/kubernetes/fake"
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"sigs.k8s.io/external-dns/endpoint"
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"sigs.k8s.io/external-dns/source/annotations"
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)
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const defaultAmbassadorNamespace = "ambassador"
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const defaultAmbassadorServiceName = "ambassador"
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// This is a compile-time validation that ambassadorHostSource is a Source.
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var _ Source = &ambassadorHostSource{}
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type AmbassadorSuite struct {
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suite.Suite
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}
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func TestAmbassadorSource(t *testing.T) {
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suite.Run(t, new(AmbassadorSuite))
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t.Run("Interface", testAmbassadorSourceImplementsSource)
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}
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// testAmbassadorSourceImplementsSource tests that ambassadorHostSource is a valid Source.
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func testAmbassadorSourceImplementsSource(t *testing.T) {
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require.Implements(t, (*Source)(nil), new(ambassadorHostSource))
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}
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func TestAmbassadorHostSource(t *testing.T) {
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t.Parallel()
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hostAnnotation := fmt.Sprintf("%s/%s", defaultAmbassadorNamespace, defaultAmbassadorServiceName)
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for _, ti := range []struct {
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title string
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annotationFilter string
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labelSelector labels.Selector
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host ambassador.Host
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service v1.Service
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expected []*endpoint.Endpoint
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}{
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{
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title: "Simple host",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeA,
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Targets: endpoint.Targets{"1.1.1.1"},
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},
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},
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}, {
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title: "Service with load balancer hostname",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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Hostname: "dns.google",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeCNAME,
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Targets: endpoint.Targets{"dns.google"},
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},
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},
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}, {
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title: "Service with external IP",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "service-external-ip",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Spec: v1.ServiceSpec{
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ExternalIPs: []string{"2.2.2.2"},
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeA,
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Targets: endpoint.Targets{"2.2.2.2"},
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},
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},
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}, {
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title: "Host with target annotation",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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targetAnnotationKey: "3.3.3.3",
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeA,
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Targets: endpoint.Targets{"3.3.3.3"},
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},
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},
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}, {
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title: "Host with TTL annotation",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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ttlAnnotationKey: "180",
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeA,
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Targets: endpoint.Targets{"1.1.1.1"},
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RecordTTL: 180,
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},
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},
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}, {
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title: "Host with provider specific annotation",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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annotations.CloudflareProxiedKey: "true",
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeA,
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Targets: endpoint.Targets{"1.1.1.1"},
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ProviderSpecific: endpoint.ProviderSpecific{{
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Name: "external-dns.alpha.kubernetes.io/cloudflare-proxied",
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Value: "true",
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}},
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},
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},
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}, {
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title: "Host with missing Ambassador annotation",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{},
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}, {
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title: "valid matching annotation filter expression",
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annotationFilter: "kubernetes.io/ingress.class in (external-ingress)",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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"kubernetes.io/ingress.class": "external-ingress",
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeA,
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Targets: endpoint.Targets{"1.1.1.1"},
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},
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},
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}, {
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title: "valid non-matching annotation filter expression",
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annotationFilter: "kubernetes.io/ingress.class in (external-ingress)",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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"kubernetes.io/ingress.class": "internal-ingress",
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{},
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}, {
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title: "invalid annotation filter expression",
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annotationFilter: "kubernetes.io/ingress.class in (invalid-ingress)",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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"kubernetes.io/ingress.class": "external-ingress",
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{},
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}, {
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title: "valid non-matching annotation filter label",
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annotationFilter: "kubernetes.io/ingress.class=external-ingress",
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labelSelector: labels.Everything(),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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"kubernetes.io/ingress.class": "internal-ingress",
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{},
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},
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{
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title: "valid non-matching label filter expression",
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labelSelector: labels.SelectorFromSet(labels.Set{"kubernetes.io/ingress.class": "external-ingress"}),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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"kubernetes.io/ingress.class": "internal-ingress",
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},
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Labels: map[string]string{
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"kubernetes.io/ingress.class": "internal-ingress",
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{},
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},
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{
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title: "valid matching label filter expression for single host",
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labelSelector: labels.SelectorFromSet(labels.Set{"kubernetes.io/ingress.class": "external-ingress"}),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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},
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Labels: map[string]string{
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"kubernetes.io/ingress.class": "external-ingress",
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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Hostname: "dns.google",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeA,
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Targets: endpoint.Targets{"1.1.1.1"},
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},
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeCNAME,
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Targets: endpoint.Targets{"dns.google"},
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},
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},
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},
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{
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title: "valid matching label filter expression and matching annotation filter",
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annotationFilter: "kubernetes.io/ingress.class in (external-ingress)",
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labelSelector: labels.SelectorFromSet(labels.Set{"kubernetes.io/ingress.class": "external-ingress"}),
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host: ambassador.Host{
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ObjectMeta: metav1.ObjectMeta{
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Name: "basic-host",
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Annotations: map[string]string{
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ambHostAnnotation: hostAnnotation,
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"kubernetes.io/ingress.class": "external-ingress",
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},
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Labels: map[string]string{
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"kubernetes.io/ingress.class": "external-ingress",
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},
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},
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Spec: &ambassador.HostSpec{
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Hostname: "www.example.org",
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},
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},
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service: v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: defaultAmbassadorServiceName,
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},
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Status: v1.ServiceStatus{
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LoadBalancer: v1.LoadBalancerStatus{
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Ingress: []v1.LoadBalancerIngress{{
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IP: "1.1.1.1",
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Hostname: "dns.google",
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}},
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},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeA,
|
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Targets: endpoint.Targets{"1.1.1.1"},
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},
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{
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DNSName: "www.example.org",
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RecordType: endpoint.RecordTypeCNAME,
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Targets: endpoint.Targets{"dns.google"},
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},
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},
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},
|
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{
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title: "valid non matching label filter expression and valid matching annotation filter",
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|
annotationFilter: "kubernetes.io/ingress.class in (external-ingress)",
|
|
labelSelector: labels.SelectorFromSet(labels.Set{"kubernetes.io/ingress.class": "external-ingress"}),
|
|
host: ambassador.Host{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "basic-host",
|
|
Annotations: map[string]string{
|
|
ambHostAnnotation: hostAnnotation,
|
|
"kubernetes.io/ingress.class": "external-ingress",
|
|
},
|
|
Labels: map[string]string{
|
|
"kubernetes.io/ingress.class": "internal-ingress",
|
|
},
|
|
},
|
|
Spec: &ambassador.HostSpec{
|
|
Hostname: "www.example.org",
|
|
},
|
|
},
|
|
service: v1.Service{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: defaultAmbassadorServiceName,
|
|
},
|
|
Status: v1.ServiceStatus{
|
|
LoadBalancer: v1.LoadBalancerStatus{
|
|
Ingress: []v1.LoadBalancerIngress{{
|
|
IP: "1.1.1.1",
|
|
Hostname: "dns.google",
|
|
}},
|
|
},
|
|
},
|
|
},
|
|
expected: []*endpoint.Endpoint{},
|
|
},
|
|
{
|
|
title: "valid matching label filter expression and non matching annotation filter",
|
|
annotationFilter: "kubernetes.io/ingress.class in (external-ingress)",
|
|
labelSelector: labels.SelectorFromSet(labels.Set{"kubernetes.io/ingress.class": "external-ingress"}),
|
|
host: ambassador.Host{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "basic-host",
|
|
Annotations: map[string]string{
|
|
ambHostAnnotation: hostAnnotation,
|
|
"kubernetes.io/ingress.class": "internal-ingress",
|
|
},
|
|
Labels: map[string]string{
|
|
"kubernetes.io/ingress.class": "external-ingress",
|
|
},
|
|
},
|
|
Spec: &ambassador.HostSpec{
|
|
Hostname: "www.example.org",
|
|
},
|
|
},
|
|
service: v1.Service{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: defaultAmbassadorServiceName,
|
|
},
|
|
Status: v1.ServiceStatus{
|
|
LoadBalancer: v1.LoadBalancerStatus{
|
|
Ingress: []v1.LoadBalancerIngress{{
|
|
IP: "1.1.1.1",
|
|
Hostname: "dns.google",
|
|
}},
|
|
},
|
|
},
|
|
},
|
|
expected: []*endpoint.Endpoint{},
|
|
},
|
|
} {
|
|
|
|
t.Run(ti.title, func(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
fakeKubernetesClient := fakeKube.NewSimpleClientset()
|
|
ambassadorScheme := runtime.NewScheme()
|
|
ambassador.AddToScheme(ambassadorScheme)
|
|
fakeDynamicClient := fakeDynamic.NewSimpleDynamicClient(ambassadorScheme)
|
|
|
|
namespace := "default"
|
|
|
|
// Create Ambassador service
|
|
_, err := fakeKubernetesClient.CoreV1().Services(defaultAmbassadorNamespace).Create(context.Background(), &ti.service, metav1.CreateOptions{})
|
|
assert.NoError(t, err)
|
|
|
|
// Create host resource
|
|
host, err := createAmbassadorHost(&ti.host)
|
|
assert.NoError(t, err)
|
|
|
|
_, err = fakeDynamicClient.Resource(ambHostGVR).Namespace(namespace).Create(context.Background(), host, metav1.CreateOptions{})
|
|
assert.NoError(t, err)
|
|
|
|
source, err := NewAmbassadorHostSource(context.TODO(), fakeDynamicClient, fakeKubernetesClient, namespace, ti.annotationFilter, ti.labelSelector)
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, source)
|
|
|
|
endpoints, err := source.Endpoints(context.Background())
|
|
assert.NoError(t, err)
|
|
// Validate returned endpoints against expected endpoints.
|
|
validateEndpoints(t, endpoints, ti.expected)
|
|
})
|
|
}
|
|
}
|
|
|
|
func createAmbassadorHost(host *ambassador.Host) (*unstructured.Unstructured, error) {
|
|
obj := &unstructured.Unstructured{}
|
|
uc, _ := newUnstructuredConverter()
|
|
err := uc.scheme.Convert(host, obj, nil)
|
|
|
|
return obj, err
|
|
}
|
|
|
|
// TestParseAmbLoadBalancerService tests our parsing of Ambassador service info.
|
|
func TestParseAmbLoadBalancerService(t *testing.T) {
|
|
vectors := []struct {
|
|
input string
|
|
ns string
|
|
svc string
|
|
errstr string
|
|
}{
|
|
{"svc", "default", "svc", ""},
|
|
{"ns/svc", "ns", "svc", ""},
|
|
{"svc.ns", "ns", "svc", ""},
|
|
{"svc.ns.foo.bar", "ns.foo.bar", "svc", ""},
|
|
{"ns/svc/foo/bar", "", "", "invalid external-dns service: ns/svc/foo/bar"},
|
|
{"ns/svc/foo.bar", "", "", "invalid external-dns service: ns/svc/foo.bar"},
|
|
{"ns.foo/svc/bar", "", "", "invalid external-dns service: ns.foo/svc/bar"},
|
|
}
|
|
|
|
for _, v := range vectors {
|
|
ns, svc, err := parseAmbLoadBalancerService(v.input)
|
|
|
|
errstr := ""
|
|
|
|
if err != nil {
|
|
errstr = err.Error()
|
|
}
|
|
if v.ns != ns {
|
|
t.Errorf("%s: got ns \"%s\", wanted \"%s\"", v.input, ns, v.ns)
|
|
}
|
|
|
|
if v.svc != svc {
|
|
t.Errorf("%s: got svc \"%s\", wanted \"%s\"", v.input, svc, v.svc)
|
|
}
|
|
|
|
if v.errstr != errstr {
|
|
t.Errorf("%s: got err \"%s\", wanted \"%s\"", v.input, errstr, v.errstr)
|
|
}
|
|
}
|
|
}
|