mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-08-06 09:36:58 +02:00
5d54849699
* Endpoint.Target is now Endpoint.Targets. This is its own type representing mutliple targets for a single DNS name while adding some convenience for sorting and comparing * Made everything compile and tests run through with the new Endpoint.Targets * The ingress source can now properly handle multiple target ips per host * Added custom conflict resolver, to better understand how conflict resolution has to work for me * My custom conflict resolver behaves a bit different than the PerResource resolver, therefore I needed to modify the expected test result Removed unnecessary FIXME * The ingress source now creates CNAME endpoints with multiple targets to let the DNS provider decide how to handle multiple CNAME targets. This could be interesting for weighted targets etc. * Adopted the expected results to the new way we create endpoints for CNAMEs * Removed Add method from Targets since manipulating the slice through here is unnecessary complicated and doesn't deliver enough convenience * Reverted ConflictResolver to the original one. There is some discussing to do what the best way is to handle conflicts * Added missing documenting comment to IsLess of Targets * Added documenting comments to Targets,Targets.Same and NewTargets to clarify their intention and usage * Service source now also generates endpoints with multiple targets * Service and Ingress source now sort all Targets for every Endpoint to make order of Targets predictable * Endpoints generated by the Google Cloud DNS provider now also have sorted Targets to make order of Targets predictable * Modified provider dyn to be able to compile with multi target changes * Fixed small nitpicks, so my code is acceptable * Fixed merge method after updating to new Targets. Replacing '!=' with .Same of course needs a boolean negation * Tests for dyn provider now also use the new Targets instead of Target * Simplified extractServiceIps as implied by linki to make it more readable * ref: change service ClusterIP retrieval again * Added entry to CHANGELOG.md describing the new features contained in this PR
691 lines
17 KiB
Go
691 lines
17 KiB
Go
/*
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Copyright 2017 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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"testing"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes/fake"
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"k8s.io/client-go/pkg/api/v1"
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"k8s.io/client-go/pkg/apis/extensions/v1beta1"
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"github.com/kubernetes-incubator/external-dns/endpoint"
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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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)
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// Validates that ingressSource is a Source
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var _ Source = &ingressSource{}
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type IngressSuite struct {
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suite.Suite
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sc Source
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fooWithTargets *v1beta1.Ingress
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}
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func (suite *IngressSuite) SetupTest() {
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fakeClient := fake.NewSimpleClientset()
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var err error
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suite.sc, err = NewIngressSource(
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fakeClient,
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"",
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"",
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"{{.Name}}",
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)
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suite.NoError(err, "should initialize ingress source")
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suite.fooWithTargets = (fakeIngress{
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name: "foo-with-targets",
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namespace: "default",
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dnsnames: []string{"foo"},
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ips: []string{"8.8.8.8"},
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hostnames: []string{"v1"},
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}).Ingress()
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_, err = fakeClient.Extensions().Ingresses(suite.fooWithTargets.Namespace).Create(suite.fooWithTargets)
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suite.NoError(err, "should succeed")
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}
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func (suite *IngressSuite) TestResourceLabelIsSet() {
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endpoints, _ := suite.sc.Endpoints()
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for _, ep := range endpoints {
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suite.Equal("ingress/default/foo-with-targets", ep.Labels[endpoint.ResourceLabelKey], "should set correct resource label")
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}
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}
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func TestIngress(t *testing.T) {
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suite.Run(t, new(IngressSuite))
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t.Run("endpointsFromIngress", testEndpointsFromIngress)
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t.Run("Endpoints", testIngressEndpoints)
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}
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func TestNewIngressSource(t *testing.T) {
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for _, ti := range []struct {
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title string
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annotationFilter string
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fqdnTemplate string
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expectError bool
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}{
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{
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title: "invalid template",
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expectError: true,
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fqdnTemplate: "{{.Name",
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},
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{
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title: "valid empty template",
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expectError: false,
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},
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{
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title: "valid template",
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expectError: false,
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fqdnTemplate: "{{.Name}}-{{.Namespace}}.ext-dns.test.com",
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},
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{
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title: "non-empty annotation filter label",
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expectError: false,
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annotationFilter: "kubernetes.io/ingress.class=nginx",
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},
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} {
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t.Run(ti.title, func(t *testing.T) {
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_, err := NewIngressSource(
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fake.NewSimpleClientset(),
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"",
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ti.annotationFilter,
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ti.fqdnTemplate,
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)
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if ti.expectError {
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assert.Error(t, err)
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} else {
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assert.NoError(t, err)
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}
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})
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}
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}
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func testEndpointsFromIngress(t *testing.T) {
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for _, ti := range []struct {
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title string
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ingress fakeIngress
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expected []*endpoint.Endpoint
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}{
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{
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title: "one rule.host one lb.hostname",
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ingress: fakeIngress{
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dnsnames: []string{"foo.bar"}, // Kubernetes requires removal of trailing dot
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hostnames: []string{"lb.com"}, // Kubernetes omits the trailing dot
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "foo.bar",
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Targets: endpoint.Targets{"lb.com"},
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},
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},
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},
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{
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title: "one rule.host one lb.IP",
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ingress: fakeIngress{
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dnsnames: []string{"foo.bar"},
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ips: []string{"8.8.8.8"},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "foo.bar",
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Targets: endpoint.Targets{"8.8.8.8"},
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},
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},
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},
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{
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title: "one rule.host two lb.IP and two lb.Hostname",
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ingress: fakeIngress{
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dnsnames: []string{"foo.bar"},
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ips: []string{"8.8.8.8", "127.0.0.1"},
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hostnames: []string{"elb.com", "alb.com"},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "foo.bar",
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Targets: endpoint.Targets{"8.8.8.8", "127.0.0.1"},
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},
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{
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DNSName: "foo.bar",
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Targets: endpoint.Targets{"elb.com", "alb.com"},
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},
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},
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},
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{
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title: "no rule.host",
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ingress: fakeIngress{
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ips: []string{"8.8.8.8", "127.0.0.1"},
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hostnames: []string{"elb.com", "alb.com"},
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},
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expected: []*endpoint.Endpoint{},
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},
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{
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title: "one empty rule.host",
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ingress: fakeIngress{
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dnsnames: []string{""},
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ips: []string{"8.8.8.8", "127.0.0.1"},
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hostnames: []string{"elb.com", "alb.com"},
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},
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expected: []*endpoint.Endpoint{},
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},
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{
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title: "no targets",
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ingress: fakeIngress{
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dnsnames: []string{""},
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},
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expected: []*endpoint.Endpoint{},
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},
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} {
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t.Run(ti.title, func(t *testing.T) {
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realIngress := ti.ingress.Ingress()
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validateEndpoints(t, endpointsFromIngress(realIngress), ti.expected)
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})
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}
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}
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func testIngressEndpoints(t *testing.T) {
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namespace := "testing"
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for _, ti := range []struct {
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title string
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targetNamespace string
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annotationFilter string
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ingressItems []fakeIngress
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expected []*endpoint.Endpoint
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expectError bool
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fqdnTemplate string
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}{
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{
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title: "no ingress",
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targetNamespace: "",
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},
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{
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title: "two simple ingresses",
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targetNamespace: "",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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dnsnames: []string{"example.org"},
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ips: []string{"8.8.8.8"},
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},
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{
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name: "fake2",
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namespace: namespace,
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dnsnames: []string{"new.org"},
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hostnames: []string{"lb.com"},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "example.org",
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Targets: endpoint.Targets{"8.8.8.8"},
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},
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{
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DNSName: "new.org",
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Targets: endpoint.Targets{"lb.com"},
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},
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},
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},
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{
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title: "two simple ingresses on different namespaces",
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targetNamespace: "",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: "testing1",
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dnsnames: []string{"example.org"},
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ips: []string{"8.8.8.8"},
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},
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{
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name: "fake2",
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namespace: "testing2",
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dnsnames: []string{"new.org"},
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hostnames: []string{"lb.com"},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "example.org",
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Targets: endpoint.Targets{"8.8.8.8"},
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},
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{
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DNSName: "new.org",
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Targets: endpoint.Targets{"lb.com"},
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},
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},
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},
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{
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title: "two simple ingresses on different namespaces with target namespace",
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targetNamespace: "testing1",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: "testing1",
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dnsnames: []string{"example.org"},
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ips: []string{"8.8.8.8"},
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},
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{
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name: "fake2",
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namespace: "testing2",
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dnsnames: []string{"new.org"},
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hostnames: []string{"lb.com"},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "example.org",
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Targets: endpoint.Targets{"8.8.8.8"},
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},
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},
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},
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{
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title: "valid matching annotation filter expression",
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targetNamespace: "",
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annotationFilter: "kubernetes.io/ingress.class in (alb, nginx)",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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annotations: map[string]string{
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"kubernetes.io/ingress.class": "nginx",
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},
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dnsnames: []string{"example.org"},
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ips: []string{"8.8.8.8"},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "example.org",
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Targets: endpoint.Targets{"8.8.8.8"},
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},
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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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targetNamespace: "",
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annotationFilter: "kubernetes.io/ingress.class in (alb, nginx)",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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annotations: map[string]string{
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"kubernetes.io/ingress.class": "tectonic",
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},
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dnsnames: []string{"example.org"},
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ips: []string{"8.8.8.8"},
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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: "invalid annotation filter expression",
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targetNamespace: "",
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annotationFilter: "kubernetes.io/ingress.name in (a b)",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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annotations: map[string]string{
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"kubernetes.io/ingress.class": "alb",
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},
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dnsnames: []string{"example.org"},
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ips: []string{"8.8.8.8"},
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},
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},
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expected: []*endpoint.Endpoint{},
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expectError: true,
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},
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{
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title: "valid matching annotation filter label",
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targetNamespace: "",
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annotationFilter: "kubernetes.io/ingress.class=nginx",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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annotations: map[string]string{
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"kubernetes.io/ingress.class": "nginx",
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},
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dnsnames: []string{"example.org"},
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ips: []string{"8.8.8.8"},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "example.org",
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Targets: endpoint.Targets{"8.8.8.8"},
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},
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},
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},
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{
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title: "valid non-matching annotation filter label",
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targetNamespace: "",
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annotationFilter: "kubernetes.io/ingress.class=nginx",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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annotations: map[string]string{
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"kubernetes.io/ingress.class": "alb",
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},
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dnsnames: []string{"example.org"},
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ips: []string{"8.8.8.8"},
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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: "our controller type is dns-controller",
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targetNamespace: "",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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annotations: map[string]string{
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controllerAnnotationKey: controllerAnnotationValue,
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},
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dnsnames: []string{"example.org"},
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ips: []string{"8.8.8.8"},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "example.org",
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Targets: endpoint.Targets{"8.8.8.8"},
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},
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},
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},
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{
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title: "different controller types are ignored",
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targetNamespace: "",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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annotations: map[string]string{
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controllerAnnotationKey: "some-other-tool",
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},
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dnsnames: []string{"example.org"},
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ips: []string{"8.8.8.8"},
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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: "template for ingress if host is missing",
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targetNamespace: "",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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annotations: map[string]string{
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controllerAnnotationKey: controllerAnnotationValue,
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},
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dnsnames: []string{},
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ips: []string{"8.8.8.8"},
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hostnames: []string{"elb.com"},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "fake1.ext-dns.test.com",
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Targets: endpoint.Targets{"8.8.8.8"},
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},
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{
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DNSName: "fake1.ext-dns.test.com",
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Targets: endpoint.Targets{"elb.com"},
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},
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},
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fqdnTemplate: "{{.Name}}.ext-dns.test.com",
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},
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{
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title: "another controller annotation skipped even with template",
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targetNamespace: "",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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annotations: map[string]string{
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controllerAnnotationKey: "other-controller",
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},
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dnsnames: []string{},
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ips: []string{"8.8.8.8"},
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},
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},
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expected: []*endpoint.Endpoint{},
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fqdnTemplate: "{{.Name}}.ext-dns.test.com",
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},
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{
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title: "ingress rules with annotation",
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targetNamespace: "",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
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annotations: map[string]string{
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targetAnnotationKey: "ingress-target.com",
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},
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dnsnames: []string{"example.org"},
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ips: []string{},
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},
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{
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name: "fake2",
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namespace: namespace,
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annotations: map[string]string{
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targetAnnotationKey: "ingress-target.com",
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},
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dnsnames: []string{"example2.org"},
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ips: []string{"8.8.8.8"},
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},
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{
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name: "fake3",
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|
namespace: namespace,
|
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annotations: map[string]string{
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targetAnnotationKey: "1.2.3.4",
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},
|
|
dnsnames: []string{"example3.org"},
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ips: []string{},
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},
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},
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expected: []*endpoint.Endpoint{
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{
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DNSName: "example.org",
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Targets: endpoint.Targets{"ingress-target.com"},
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RecordType: endpoint.RecordTypeCNAME,
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},
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{
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DNSName: "example2.org",
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Targets: endpoint.Targets{"ingress-target.com"},
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RecordType: endpoint.RecordTypeCNAME,
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},
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{
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|
DNSName: "example3.org",
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|
Targets: endpoint.Targets{"1.2.3.4"},
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RecordType: endpoint.RecordTypeA,
|
|
},
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},
|
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},
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|
{
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|
title: "ingress rules with annotation and custom TTL",
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|
targetNamespace: "",
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ingressItems: []fakeIngress{
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{
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name: "fake1",
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namespace: namespace,
|
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annotations: map[string]string{
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|
targetAnnotationKey: "ingress-target.com",
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ttlAnnotationKey: "6",
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},
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dnsnames: []string{"example.org"},
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ips: []string{},
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},
|
|
{
|
|
name: "fake2",
|
|
namespace: namespace,
|
|
annotations: map[string]string{
|
|
targetAnnotationKey: "ingress-target.com",
|
|
ttlAnnotationKey: "1",
|
|
},
|
|
dnsnames: []string{"example2.org"},
|
|
ips: []string{"8.8.8.8"},
|
|
},
|
|
},
|
|
expected: []*endpoint.Endpoint{
|
|
{
|
|
DNSName: "example.org",
|
|
Targets: endpoint.Targets{"ingress-target.com"},
|
|
RecordTTL: endpoint.TTL(6),
|
|
},
|
|
{
|
|
DNSName: "example2.org",
|
|
Targets: endpoint.Targets{"ingress-target.com"},
|
|
RecordTTL: endpoint.TTL(1),
|
|
},
|
|
},
|
|
},
|
|
{
|
|
title: "template for ingress with annotation",
|
|
targetNamespace: "",
|
|
ingressItems: []fakeIngress{
|
|
{
|
|
name: "fake1",
|
|
namespace: namespace,
|
|
annotations: map[string]string{
|
|
targetAnnotationKey: "ingress-target.com",
|
|
},
|
|
dnsnames: []string{},
|
|
ips: []string{},
|
|
hostnames: []string{},
|
|
},
|
|
{
|
|
name: "fake2",
|
|
namespace: namespace,
|
|
annotations: map[string]string{
|
|
targetAnnotationKey: "ingress-target.com",
|
|
},
|
|
dnsnames: []string{},
|
|
ips: []string{"8.8.8.8"},
|
|
},
|
|
{
|
|
name: "fake3",
|
|
namespace: namespace,
|
|
annotations: map[string]string{
|
|
targetAnnotationKey: "1.2.3.4",
|
|
},
|
|
dnsnames: []string{},
|
|
ips: []string{},
|
|
hostnames: []string{},
|
|
},
|
|
},
|
|
expected: []*endpoint.Endpoint{
|
|
{
|
|
DNSName: "fake1.ext-dns.test.com",
|
|
Targets: endpoint.Targets{"ingress-target.com"},
|
|
RecordType: endpoint.RecordTypeCNAME,
|
|
},
|
|
{
|
|
DNSName: "fake2.ext-dns.test.com",
|
|
Targets: endpoint.Targets{"ingress-target.com"},
|
|
RecordType: endpoint.RecordTypeCNAME,
|
|
},
|
|
{
|
|
DNSName: "fake3.ext-dns.test.com",
|
|
Targets: endpoint.Targets{"1.2.3.4"},
|
|
RecordType: endpoint.RecordTypeA,
|
|
},
|
|
},
|
|
fqdnTemplate: "{{.Name}}.ext-dns.test.com",
|
|
},
|
|
} {
|
|
t.Run(ti.title, func(t *testing.T) {
|
|
ingresses := make([]*v1beta1.Ingress, 0)
|
|
for _, item := range ti.ingressItems {
|
|
ingresses = append(ingresses, item.Ingress())
|
|
}
|
|
|
|
fakeClient := fake.NewSimpleClientset()
|
|
ingressSource, _ := NewIngressSource(
|
|
fakeClient,
|
|
ti.targetNamespace,
|
|
ti.annotationFilter,
|
|
ti.fqdnTemplate,
|
|
)
|
|
for _, ingress := range ingresses {
|
|
_, err := fakeClient.Extensions().Ingresses(ingress.Namespace).Create(ingress)
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
res, err := ingressSource.Endpoints()
|
|
if ti.expectError {
|
|
assert.Error(t, err)
|
|
} else {
|
|
assert.NoError(t, err)
|
|
}
|
|
|
|
validateEndpoints(t, res, ti.expected)
|
|
})
|
|
}
|
|
}
|
|
|
|
// ingress specific helper functions
|
|
type fakeIngress struct {
|
|
dnsnames []string
|
|
ips []string
|
|
hostnames []string
|
|
namespace string
|
|
name string
|
|
annotations map[string]string
|
|
}
|
|
|
|
func (ing fakeIngress) Ingress() *v1beta1.Ingress {
|
|
ingress := &v1beta1.Ingress{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Namespace: ing.namespace,
|
|
Name: ing.name,
|
|
Annotations: ing.annotations,
|
|
},
|
|
Spec: v1beta1.IngressSpec{
|
|
Rules: []v1beta1.IngressRule{},
|
|
},
|
|
Status: v1beta1.IngressStatus{
|
|
LoadBalancer: v1.LoadBalancerStatus{
|
|
Ingress: []v1.LoadBalancerIngress{},
|
|
},
|
|
},
|
|
}
|
|
for _, dnsname := range ing.dnsnames {
|
|
ingress.Spec.Rules = append(ingress.Spec.Rules, v1beta1.IngressRule{
|
|
Host: dnsname,
|
|
})
|
|
}
|
|
for _, ip := range ing.ips {
|
|
ingress.Status.LoadBalancer.Ingress = append(ingress.Status.LoadBalancer.Ingress, v1.LoadBalancerIngress{
|
|
IP: ip,
|
|
})
|
|
}
|
|
for _, hostname := range ing.hostnames {
|
|
ingress.Status.LoadBalancer.Ingress = append(ingress.Status.LoadBalancer.Ingress, v1.LoadBalancerIngress{
|
|
Hostname: hostname,
|
|
})
|
|
}
|
|
return ingress
|
|
}
|