mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-11-04 04:31:00 +01:00
146 lines
3.4 KiB
Go
146 lines
3.4 KiB
Go
/*
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Copyright 2022 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 plural
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import (
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"context"
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"fmt"
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"os"
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log "github.com/sirupsen/logrus"
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"sigs.k8s.io/external-dns/endpoint"
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"sigs.k8s.io/external-dns/plan"
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"sigs.k8s.io/external-dns/provider"
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)
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const (
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CreateAction = "c"
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DeleteAction = "d"
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)
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type PluralProvider struct {
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provider.BaseProvider
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Client Client
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}
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type RecordChange struct {
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Action string
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Record *DnsRecord
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}
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func NewPluralProvider(cluster, provider string) (*PluralProvider, error) {
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token := os.Getenv("PLURAL_ACCESS_TOKEN")
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endpoint := os.Getenv("PLURAL_ENDPOINT")
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if token == "" {
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return nil, fmt.Errorf("No plural access token provided, you must set the PLURAL_ACCESS_TOKEN env var")
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}
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config := &Config{
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Token: token,
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Endpoint: endpoint,
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Cluster: cluster,
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Provider: provider,
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}
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client, err := NewClient(config)
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if err != nil {
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return nil, err
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}
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prov := &PluralProvider{
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Client: client,
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}
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return prov, nil
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}
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func (p *PluralProvider) Records(_ context.Context) (endpoints []*endpoint.Endpoint, err error) {
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records, err := p.Client.DnsRecords()
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if err != nil {
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return
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}
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endpoints = make([]*endpoint.Endpoint, len(records))
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for i, record := range records {
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endpoints[i] = endpoint.NewEndpoint(record.Name, record.Type, record.Records...)
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}
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return
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}
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func (p *PluralProvider) PropertyValuesEqual(name, previous, current string) bool {
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return p.BaseProvider.PropertyValuesEqual(name, previous, current)
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}
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func (p *PluralProvider) AdjustEndpoints(endpoints []*endpoint.Endpoint) []*endpoint.Endpoint {
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return endpoints
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}
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func (p *PluralProvider) ApplyChanges(_ context.Context, diffs *plan.Changes) error {
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var changes []*RecordChange
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for _, endpoint := range diffs.Create {
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changes = append(changes, makeChange(CreateAction, endpoint.Targets, endpoint))
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}
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for _, desired := range diffs.UpdateNew {
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changes = append(changes, makeChange(CreateAction, desired.Targets, desired))
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}
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for _, deleted := range diffs.Delete {
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changes = append(changes, makeChange(DeleteAction, []string{}, deleted))
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}
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return p.applyChanges(changes)
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}
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func makeChange(change string, target []string, endpoint *endpoint.Endpoint) *RecordChange {
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return &RecordChange{
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Action: change,
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Record: &DnsRecord{
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Name: endpoint.DNSName,
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Type: endpoint.RecordType,
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Records: target,
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},
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}
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}
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func (p *PluralProvider) applyChanges(changes []*RecordChange) error {
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for _, change := range changes {
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logFields := log.Fields{
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"name": change.Record.Name,
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"type": change.Record.Type,
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"action": change.Action,
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}
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log.WithFields(logFields).Info("Changing record.")
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if change.Action == CreateAction {
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_, err := p.Client.CreateRecord(change.Record)
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if err != nil {
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return err
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}
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}
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if change.Action == DeleteAction {
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if err := p.Client.DeleteRecord(change.Record.Name, change.Record.Type); err != nil {
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return err
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}
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}
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}
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return nil
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}
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