mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-08-06 17:46:57 +02:00
98de0142ba
* kickoff txt registry * fix inmemory dns provider to include recordtype info for validation * Merge master * fix ununsed variable in inmemory provider * add tests for records * add test for no prefix name formatter * implement apply changes with tests * add flag to enable txt registry * add txt registry to main * improve sort testing * filter out non-owned records * NewEndpoint(...) requires record type * use newendpoint in aws_test, fix tests * change suitable type implementation * fix the test for compatibility component * change inmemory provider to include recordtype and use suitable type * fix comments, CNAME should target hostname * name mapper do not use pointer on struct * txt prefix - just concatenate, remove spew, fix txt record label * allow TXT records as result from dns provider * add changelog * fix tests * TXT records need to be enclosed in double quotes
599 lines
18 KiB
Go
599 lines
18 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 provider
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import (
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"fmt"
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"net"
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"testing"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/awserr"
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"github.com/aws/aws-sdk-go/service/route53"
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"github.com/kubernetes-incubator/external-dns/endpoint"
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"github.com/kubernetes-incubator/external-dns/internal/testutils"
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"github.com/kubernetes-incubator/external-dns/plan"
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)
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const (
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// ID of the hosted zone where the tests are running.
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testZone = "ext-dns-test.teapot.zalan.do."
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)
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// Compile time check for interface conformance
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var _ Route53API = &Route53APIStub{}
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// Route53APIStub is a minimal implementation of Route53API, used primarily for unit testing.
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// See http://http://docs.aws.amazon.com/sdk-for-go/api/service/route53.html for descriptions
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// of all of its methods.
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// mostly taken from: https://github.com/kubernetes/kubernetes/blob/853167624edb6bc0cfdcdfb88e746e178f5db36c/federation/pkg/dnsprovider/providers/aws/route53/stubs/route53api.go
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type Route53APIStub struct {
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zones map[string]*route53.HostedZone
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recordSets map[string]map[string][]*route53.ResourceRecordSet
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}
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// NewRoute53APIStub returns an initialized Route53APIStub
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func NewRoute53APIStub() *Route53APIStub {
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return &Route53APIStub{
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zones: make(map[string]*route53.HostedZone),
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recordSets: make(map[string]map[string][]*route53.ResourceRecordSet),
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}
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}
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func (r *Route53APIStub) ListResourceRecordSetsPages(input *route53.ListResourceRecordSetsInput, fn func(p *route53.ListResourceRecordSetsOutput, lastPage bool) (shouldContinue bool)) error {
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output := route53.ListResourceRecordSetsOutput{} // TODO: Support optional input args.
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if len(r.recordSets) <= 0 {
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output.ResourceRecordSets = []*route53.ResourceRecordSet{}
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} else if _, ok := r.recordSets[aws.StringValue(input.HostedZoneId)]; !ok {
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output.ResourceRecordSets = []*route53.ResourceRecordSet{}
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} else {
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for _, rrsets := range r.recordSets[aws.StringValue(input.HostedZoneId)] {
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for _, rrset := range rrsets {
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output.ResourceRecordSets = append(output.ResourceRecordSets, rrset)
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}
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}
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}
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lastPage := true
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fn(&output, lastPage)
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return nil
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}
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func (r *Route53APIStub) ChangeResourceRecordSets(input *route53.ChangeResourceRecordSetsInput) (*route53.ChangeResourceRecordSetsOutput, error) {
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_, ok := r.zones[aws.StringValue(input.HostedZoneId)]
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if !ok {
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return nil, fmt.Errorf("Hosted zone doesn't exist: %s", aws.StringValue(input.HostedZoneId))
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}
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if len(input.ChangeBatch.Changes) == 0 {
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return nil, fmt.Errorf("ChangeBatch doesn't contain any changes")
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}
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output := &route53.ChangeResourceRecordSetsOutput{}
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recordSets, ok := r.recordSets[aws.StringValue(input.HostedZoneId)]
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if !ok {
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recordSets = make(map[string][]*route53.ResourceRecordSet)
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}
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for _, change := range input.ChangeBatch.Changes {
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if aws.StringValue(change.ResourceRecordSet.Type) == route53.RRTypeA {
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for _, rrs := range change.ResourceRecordSet.ResourceRecords {
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if net.ParseIP(aws.StringValue(rrs.Value)) == nil {
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return nil, fmt.Errorf("A records must point to IPs")
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}
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}
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}
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key := aws.StringValue(change.ResourceRecordSet.Name) + "::" + aws.StringValue(change.ResourceRecordSet.Type)
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switch aws.StringValue(change.Action) {
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case route53.ChangeActionCreate:
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if _, found := recordSets[key]; found {
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return nil, fmt.Errorf("Attempt to create duplicate rrset %s", key) // TODO: Return AWS errors with codes etc
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}
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recordSets[key] = append(recordSets[key], change.ResourceRecordSet)
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case route53.ChangeActionDelete:
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if _, found := recordSets[key]; !found {
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return nil, fmt.Errorf("Attempt to delete non-existent rrset %s", key) // TODO: Check other fields too
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}
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delete(recordSets, key)
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case route53.ChangeActionUpsert:
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recordSets[key] = []*route53.ResourceRecordSet{change.ResourceRecordSet}
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}
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}
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r.recordSets[aws.StringValue(input.HostedZoneId)] = recordSets
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return output, nil // TODO: We should ideally return status etc, but we don't' use that yet.
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}
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func (r *Route53APIStub) CreateHostedZone(input *route53.CreateHostedZoneInput) (*route53.CreateHostedZoneOutput, error) {
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name := aws.StringValue(input.Name)
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id := "/hostedzone/" + name
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if _, ok := r.zones[id]; ok {
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return nil, fmt.Errorf("Error creating hosted DNS zone: %s already exists", id)
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}
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r.zones[id] = &route53.HostedZone{
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Id: aws.String(id),
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Name: aws.String(name),
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}
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return &route53.CreateHostedZoneOutput{HostedZone: r.zones[id]}, nil
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}
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func TestAWSRecords(t *testing.T) {
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provider := newAWSProvider(t, false, []*endpoint.Endpoint{
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endpoint.NewEndpoint("list-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{
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endpoint.NewEndpoint("list-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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}
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func TestAWSCreateRecords(t *testing.T) {
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provider := newAWSProvider(t, false, []*endpoint.Endpoint{})
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records := []*endpoint.Endpoint{
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endpoint.NewEndpoint("create-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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if err := provider.CreateRecords(testZone, records); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{
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endpoint.NewEndpoint("create-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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}
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func TestAWSUpdateRecords(t *testing.T) {
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provider := newAWSProvider(t, false, []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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currentRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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}
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updatedRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "1.2.3.4", "A"),
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}
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if err := provider.UpdateRecords(testZone, updatedRecords, currentRecords); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "1.2.3.4", "A"),
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})
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}
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func TestAWSDeleteRecords(t *testing.T) {
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provider := newAWSProvider(t, false, []*endpoint.Endpoint{
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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currentRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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if err := provider.DeleteRecords(testZone, currentRecords); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{})
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}
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func TestAWSApplyChanges(t *testing.T) {
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provider := newAWSProvider(t, false, []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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createRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("create-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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currentRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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updatedRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "1.2.3.4", ""),
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}
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deleteRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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changes := &plan.Changes{
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Create: createRecords,
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UpdateNew: updatedRecords,
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UpdateOld: currentRecords,
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Delete: deleteRecords,
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}
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if err := provider.ApplyChanges(testZone, changes); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{
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endpoint.NewEndpoint("create-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "1.2.3.4", "A"),
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})
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}
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func TestAWSApplyNoChanges(t *testing.T) {
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provider := newAWSProvider(t, false, []*endpoint.Endpoint{})
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if err := provider.ApplyChanges(testZone, &plan.Changes{}); err != nil {
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t.Error(err)
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}
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}
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func TestAWSCreateRecordsDryRun(t *testing.T) {
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provider := newAWSProvider(t, true, []*endpoint.Endpoint{})
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records := []*endpoint.Endpoint{
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endpoint.NewEndpoint("create-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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if err := provider.CreateRecords(testZone, records); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{})
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}
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func TestAWSUpdateRecordsDryRun(t *testing.T) {
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provider := newAWSProvider(t, true, []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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currentRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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updatedRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "1.2.3.4", ""),
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}
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if err := provider.UpdateRecords(testZone, updatedRecords, currentRecords); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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}
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func TestAWSDeleteRecordsDryRun(t *testing.T) {
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provider := newAWSProvider(t, true, []*endpoint.Endpoint{
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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currentRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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if err := provider.DeleteRecords(testZone, currentRecords); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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}
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func TestAWSApplyChangesDryRun(t *testing.T) {
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provider := newAWSProvider(t, true, []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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createRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("create-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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currentRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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updatedRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "1.2.3.4", ""),
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}
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deleteRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", ""),
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}
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changes := &plan.Changes{
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Create: createRecords,
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UpdateNew: updatedRecords,
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UpdateOld: currentRecords,
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Delete: deleteRecords,
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}
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if err := provider.ApplyChanges(testZone, changes); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
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})
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}
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func TestAWSCreateRecordsCNAME(t *testing.T) {
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provider := newAWSProvider(t, false, []*endpoint.Endpoint{})
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records := []*endpoint.Endpoint{
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endpoint.NewEndpoint("create-test.ext-dns-test.teapot.zalan.do", "foo.elb.amazonaws.com", ""),
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}
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if err := provider.CreateRecords(testZone, records); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{
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endpoint.NewEndpoint("create-test.ext-dns-test.teapot.zalan.do", "foo.elb.amazonaws.com", "CNAME"),
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})
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}
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func TestAWSUpdateRecordsCNAME(t *testing.T) {
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provider := newAWSProvider(t, false, []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "foo.elb.amazonaws.com", "CNAME"),
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})
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currentRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "foo.elb.amazonaws.com", ""),
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}
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updatedRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "bar.elb.amazonaws.com", ""),
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}
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if err := provider.UpdateRecords(testZone, updatedRecords, currentRecords); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "bar.elb.amazonaws.com", "CNAME"),
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})
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}
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func TestAWSDeleteRecordsCNAME(t *testing.T) {
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provider := newAWSProvider(t, false, []*endpoint.Endpoint{
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "baz.elb.amazonaws.com", "CNAME"),
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})
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currentRecords := []*endpoint.Endpoint{
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endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "baz.elb.amazonaws.com", ""),
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}
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if err := provider.DeleteRecords(testZone, currentRecords); err != nil {
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t.Fatal(err)
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}
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records, err := provider.Records(testZone)
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if err != nil {
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t.Fatal(err)
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}
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validateEndpoints(t, records, []*endpoint.Endpoint{})
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}
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func TestAWSApplyChangesCNAME(t *testing.T) {
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provider := newAWSProvider(t, false, []*endpoint.Endpoint{
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endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "foo.elb.amazonaws.com", "CNAME"),
|
|
endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "qux.elb.amazonaws.com", "CNAME"),
|
|
})
|
|
|
|
createRecords := []*endpoint.Endpoint{
|
|
endpoint.NewEndpoint("create-test.ext-dns-test.teapot.zalan.do", "foo.elb.amazonaws.com", ""),
|
|
}
|
|
|
|
currentRecords := []*endpoint.Endpoint{
|
|
endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "bar.elb.amazonaws.com", ""),
|
|
}
|
|
updatedRecords := []*endpoint.Endpoint{
|
|
endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "baz.elb.amazonaws.com", ""),
|
|
}
|
|
|
|
deleteRecords := []*endpoint.Endpoint{
|
|
endpoint.NewEndpoint("delete-test.ext-dns-test.teapot.zalan.do", "qux.elb.amazonaws.com", ""),
|
|
}
|
|
|
|
changes := &plan.Changes{
|
|
Create: createRecords,
|
|
UpdateNew: updatedRecords,
|
|
UpdateOld: currentRecords,
|
|
Delete: deleteRecords,
|
|
}
|
|
|
|
if err := provider.ApplyChanges(testZone, changes); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
records, err := provider.Records(testZone)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
validateEndpoints(t, records, []*endpoint.Endpoint{
|
|
endpoint.NewEndpoint("create-test.ext-dns-test.teapot.zalan.do", "foo.elb.amazonaws.com", "CNAME"),
|
|
endpoint.NewEndpoint("update-test.ext-dns-test.teapot.zalan.do", "baz.elb.amazonaws.com", "CNAME"),
|
|
})
|
|
}
|
|
|
|
func TestAWSSanitizeZone(t *testing.T) {
|
|
provider := newAWSProvider(t, false, []*endpoint.Endpoint{
|
|
endpoint.NewEndpoint("list-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
|
|
})
|
|
|
|
records, err := provider.Records(testZone)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
validateEndpoints(t, records, []*endpoint.Endpoint{
|
|
endpoint.NewEndpoint("list-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
|
|
})
|
|
|
|
records, err = provider.Records("/hostedzone/" + testZone)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
validateEndpoints(t, records, []*endpoint.Endpoint{
|
|
endpoint.NewEndpoint("list-test.ext-dns-test.teapot.zalan.do", "8.8.8.8", "A"),
|
|
})
|
|
}
|
|
|
|
func validateEndpoints(t *testing.T, endpoints []*endpoint.Endpoint, expected []*endpoint.Endpoint) {
|
|
if !testutils.SameEndpoints(endpoints, expected) {
|
|
t.Fatalf("expected %v, got %v", expected, endpoints)
|
|
}
|
|
}
|
|
|
|
func newAWSProvider(t *testing.T, dryRun bool, records []*endpoint.Endpoint) *AWSProvider {
|
|
client := NewRoute53APIStub()
|
|
|
|
if _, err := client.CreateHostedZone(&route53.CreateHostedZoneInput{
|
|
CallerReference: aws.String("external-dns.alpha.kubernetes.io/test-zone"),
|
|
Name: aws.String("ext-dns-test.teapot.zalan.do."),
|
|
}); err != nil {
|
|
if err, ok := err.(awserr.Error); !ok || err.Code() != route53.ErrCodeHostedZoneAlreadyExists {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
provider := &AWSProvider{
|
|
Client: client,
|
|
DryRun: false,
|
|
}
|
|
|
|
setupRecords(t, provider, records)
|
|
|
|
provider.DryRun = dryRun
|
|
|
|
return provider
|
|
}
|
|
|
|
func setupRecords(t *testing.T, provider *AWSProvider, endpoints []*endpoint.Endpoint) {
|
|
clearRecords(t, provider)
|
|
|
|
if err := provider.CreateRecords(testZone, endpoints); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
records, err := provider.Records(testZone)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
validateEndpoints(t, records, endpoints)
|
|
}
|
|
|
|
func clearRecords(t *testing.T, provider *AWSProvider) {
|
|
recordSets := []*route53.ResourceRecordSet{}
|
|
if err := provider.Client.ListResourceRecordSetsPages(&route53.ListResourceRecordSetsInput{
|
|
HostedZoneId: aws.String(testZone),
|
|
}, func(resp *route53.ListResourceRecordSetsOutput, _ bool) bool {
|
|
for _, recordSet := range resp.ResourceRecordSets {
|
|
switch aws.StringValue(recordSet.Type) {
|
|
case "A", "CNAME":
|
|
recordSets = append(recordSets, recordSet)
|
|
}
|
|
}
|
|
return true
|
|
}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
changes := make([]*route53.Change, 0, len(recordSets))
|
|
for _, recordSet := range recordSets {
|
|
changes = append(changes, &route53.Change{
|
|
Action: aws.String(route53.ChangeActionDelete),
|
|
ResourceRecordSet: recordSet,
|
|
})
|
|
}
|
|
|
|
if len(changes) != 0 {
|
|
if _, err := provider.Client.ChangeResourceRecordSets(&route53.ChangeResourceRecordSetsInput{
|
|
HostedZoneId: aws.String(testZone),
|
|
ChangeBatch: &route53.ChangeBatch{
|
|
Changes: changes,
|
|
},
|
|
}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
records, err := provider.Records(testZone)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
validateEndpoints(t, records, []*endpoint.Endpoint{})
|
|
}
|