67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
// Copyright 2018 Google Inc.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package dyndns
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import (
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"context"
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"log"
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"github.com/libdns/libdns"
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)
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type RecordGetterSetter interface {
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libdns.RecordGetter
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libdns.RecordSetter
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}
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// Update takes a record which should be updated
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// within the specified zone.
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func Update(ctx context.Context, zone string, record libdns.Record, provider RecordGetterSetter) error {
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existing, err := provider.GetRecords(ctx, zone)
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if err != nil {
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return err
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}
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var updated []libdns.Record
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for _, rec := range existing {
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if rec.Name != record.Name || rec.Type != record.Type {
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continue
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}
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if rec.Value == record.Value {
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log.Printf("exit early: record up to date (%s)", record.Value)
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return nil
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}
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// TODO: it appears the cloudflare provider expects a non-empty ID to
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// mean that a record should be created rather than updated. This behavior
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// means that we clear the ID to force an update by the zone name.
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//
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// See: https://github.com/libdns/cloudflare/issues/1.
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rec.ID = ""
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rec.Value = record.Value
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updated = append(updated, rec)
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break
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}
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if len(updated) == 0 {
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updated = []libdns.Record{record}
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}
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if _, err := provider.SetRecords(ctx, zone, updated); err != nil {
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return err
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}
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return nil
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}
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