e0ca8abba8
The current `List()` implementation just lists the DNS resorce records in a given managed zone once and retruns the list. It neither performs a paged walk nor does it consider the `page_token` in the returned response. This change walks all the pages and aggregates the records in the pages and returns the aggregated list. This is potentially dangerous as it can blow up memory if there are a huge number of records in the given managed zone. But this is the best we can do without changing the provider interface too much. Next step is to define a new paged list interface and implement it.
95 lines
2.7 KiB
Go
95 lines
2.7 KiB
Go
/*
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Copyright 2016 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 clouddns
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import (
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"context"
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"k8s.io/kubernetes/federation/pkg/dnsprovider"
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"k8s.io/kubernetes/federation/pkg/dnsprovider/providers/google/clouddns/internal/interfaces"
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"k8s.io/kubernetes/federation/pkg/dnsprovider/rrstype"
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)
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// Compile time check for interface adherence
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var _ dnsprovider.ResourceRecordSets = ResourceRecordSets{}
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type ResourceRecordSets struct {
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zone *Zone
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impl interfaces.ResourceRecordSetsService
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}
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// List returns a list of resource records in the given project and
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// managed zone.
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// !!CAUTION!! Your memory might explode if you have a huge number of
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// records in your managed zone.
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func (rrsets ResourceRecordSets) List() ([]dnsprovider.ResourceRecordSet, error) {
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var list []dnsprovider.ResourceRecordSet
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ctx := context.Background()
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call := rrsets.impl.List(rrsets.project(), rrsets.zone.impl.Name())
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err := call.Pages(ctx, func(page interfaces.ResourceRecordSetsListResponse) error {
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for _, rrset := range page.Rrsets() {
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list = append(list, ResourceRecordSet{rrset, &rrsets})
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return list, nil
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}
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func (rrsets ResourceRecordSets) Get(name string) ([]dnsprovider.ResourceRecordSet, error) {
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var list []dnsprovider.ResourceRecordSet
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ctx := context.Background()
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call := rrsets.impl.Get(rrsets.project(), rrsets.zone.impl.Name(), name)
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err := call.Pages(ctx, func(page interfaces.ResourceRecordSetsListResponse) error {
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for _, rrset := range page.Rrsets() {
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list = append(list, ResourceRecordSet{rrset, &rrsets})
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return list, nil
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}
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func (r ResourceRecordSets) StartChangeset() dnsprovider.ResourceRecordChangeset {
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return &ResourceRecordChangeset{
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rrsets: &r,
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}
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}
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func (r ResourceRecordSets) New(name string, rrdatas []string, ttl int64, rrstype rrstype.RrsType) dnsprovider.ResourceRecordSet {
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return ResourceRecordSet{r.impl.NewResourceRecordSet(name, rrdatas, ttl, rrstype), &r}
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}
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func (rrsets ResourceRecordSets) project() string {
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return rrsets.zone.project()
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}
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// Zone returns the parent zone
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func (rrset ResourceRecordSets) Zone() dnsprovider.Zone {
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return rrset.zone
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}
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