forked from kubernetes/kops
/
gce.go
819 lines (671 loc) · 20.7 KB
/
gce.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package gce
import (
"context"
"fmt"
"strings"
"github.com/golang/glog"
compute "google.golang.org/api/compute/v0.beta"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/kops/dnsprovider/pkg/dnsprovider"
"k8s.io/kops/pkg/resources"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup/gce"
)
type gceListFn func() ([]*resources.Resource, error)
const (
typeInstance = "Instance"
typeInstanceTemplate = "InstanceTemplate"
typeDisk = "Disk"
typeInstanceGroupManager = "InstanceGroupManager"
typeTargetPool = "TargetPool"
typeFirewallRule = "FirewallRule"
typeForwardingRule = "ForwardingRule"
typeAddress = "Address"
typeRoute = "Route"
)
// Maximum number of `-` separated tokens in a name
const maxPrefixTokens = 4
func ListResourcesGCE(gceCloud gce.GCECloud, clusterName string, region string) (map[string]*resources.Resource, error) {
if region == "" {
region = gceCloud.Region()
}
resources := make(map[string]*resources.Resource)
d := &clusterDiscoveryGCE{
cloud: gceCloud,
gceCloud: gceCloud,
clusterName: clusterName,
}
{
// TODO: Only zones in api.Cluster object, if we have one?
gceZones, err := d.gceCloud.Compute().Zones.List(d.gceCloud.Project()).Do()
if err != nil {
return nil, fmt.Errorf("error listing zones: %v", err)
}
for _, gceZone := range gceZones.Items {
u, err := gce.ParseGoogleCloudURL(gceZone.Region)
if err != nil {
return nil, err
}
if u.Name != region {
continue
}
d.zones = append(d.zones, gceZone.Name)
}
if len(d.zones) == 0 {
return nil, fmt.Errorf("unable to determine zones in region %q", region)
}
glog.Infof("Scanning zones: %v", d.zones)
}
listFunctions := []gceListFn{
d.listGCEInstanceTemplates,
d.listInstanceGroupManagersAndInstances,
d.listTargetPools,
d.listForwardingRules,
d.listFirewallRules,
d.listGCEDisks,
d.listGCEDNSZone,
// TODO: Find routes via instances (via instance groups)
d.listAddresses,
}
for _, fn := range listFunctions {
resourceTrackers, err := fn()
if err != nil {
return nil, err
}
for _, t := range resourceTrackers {
resources[t.Type+":"+t.ID] = t
}
}
// We try to clean up orphaned routes.
// Technically we still have a race condition here - until the master(s) are terminated, they will keep
// creating routes. Another option might be to have a post-destroy cleanup, and only remove routes with no target.
{
resourceTrackers, err := d.listRoutes(resources)
if err != nil {
return nil, err
}
for _, t := range resourceTrackers {
resources[t.Type+":"+t.ID] = t
}
}
for k, t := range resources {
if t.Done {
delete(resources, k)
}
}
return resources, nil
}
type clusterDiscoveryGCE struct {
cloud fi.Cloud
gceCloud gce.GCECloud
clusterName string
instanceTemplates []*compute.InstanceTemplate
zones []string
}
func (d *clusterDiscoveryGCE) findInstanceTemplates() ([]*compute.InstanceTemplate, error) {
if d.instanceTemplates != nil {
return d.instanceTemplates, nil
}
instanceTemplates, err := gce.FindInstanceTemplates(d.gceCloud, d.clusterName)
if err != nil {
return nil, err
}
d.instanceTemplates = instanceTemplates
return d.instanceTemplates, nil
}
func (d *clusterDiscoveryGCE) listGCEInstanceTemplates() ([]*resources.Resource, error) {
var resourceTrackers []*resources.Resource
templates, err := d.findInstanceTemplates()
if err != nil {
return nil, err
}
for _, t := range templates {
selfLink := t.SelfLink // avoid closure-in-loop go-tcha
resourceTracker := &resources.Resource{
Name: t.Name,
ID: t.Name,
Type: typeInstanceTemplate,
Deleter: func(cloud fi.Cloud, r *resources.Resource) error {
return gce.DeleteInstanceTemplate(d.gceCloud, selfLink)
},
Obj: t,
}
glog.V(4).Infof("Found resource: %s", t.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return resourceTrackers, nil
}
func (d *clusterDiscoveryGCE) listInstanceGroupManagersAndInstances() ([]*resources.Resource, error) {
c := d.gceCloud
project := c.Project()
var resourceTrackers []*resources.Resource
instanceTemplates := make(map[string]*compute.InstanceTemplate)
{
templates, err := d.findInstanceTemplates()
if err != nil {
return nil, err
}
for _, t := range templates {
instanceTemplates[t.SelfLink] = t
}
}
ctx := context.Background()
for _, zoneName := range d.zones {
err := c.Compute().InstanceGroupManagers.List(project, zoneName).Pages(ctx, func(page *compute.InstanceGroupManagerList) error {
for i := range page.Items {
mig := page.Items[i] // avoid closure-in-loop go-tcha
instanceTemplate := instanceTemplates[mig.InstanceTemplate]
if instanceTemplate == nil {
glog.V(2).Infof("Ignoring MIG with unmanaged InstanceTemplate: %s", mig.InstanceTemplate)
continue
}
resourceTracker := &resources.Resource{
Name: mig.Name,
ID: zoneName + "/" + mig.Name,
Type: typeInstanceGroupManager,
Deleter: func(cloud fi.Cloud, r *resources.Resource) error { return gce.DeleteInstanceGroupManager(c, mig) },
Obj: mig,
}
resourceTracker.Blocks = append(resourceTracker.Blocks, typeInstanceTemplate+":"+instanceTemplate.Name)
glog.V(4).Infof("Found resource: %s", mig.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
instanceTrackers, err := d.listManagedInstances(mig)
if err != nil {
return fmt.Errorf("error listing instances in InstanceGroupManager: %v", err)
}
resourceTrackers = append(resourceTrackers, instanceTrackers...)
}
return nil
})
if err != nil {
return nil, fmt.Errorf("error listing InstanceGroupManagers: %v", err)
}
}
return resourceTrackers, nil
}
func (d *clusterDiscoveryGCE) listManagedInstances(igm *compute.InstanceGroupManager) ([]*resources.Resource, error) {
c := d.gceCloud
var resourceTrackers []*resources.Resource
zoneName := gce.LastComponent(igm.Zone)
instances, err := gce.ListManagedInstances(c, igm)
if err != nil {
return nil, err
}
for _, i := range instances {
url := i.Instance // avoid closure-in-loop go-tcha
name := gce.LastComponent(url)
resourceTracker := &resources.Resource{
Name: name,
ID: zoneName + "/" + name,
Type: typeInstance,
Deleter: func(cloud fi.Cloud, tracker *resources.Resource) error {
return gce.DeleteInstance(c, url)
},
Dumper: DumpManagedInstance,
Obj: i,
}
// We don't block deletion of the instance group manager
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return resourceTrackers, nil
}
// findGCEDisks finds all Disks that are associated with the current cluster
// It matches them by looking for the cluster label
func (d *clusterDiscoveryGCE) findGCEDisks() ([]*compute.Disk, error) {
c := d.gceCloud
clusterTag := gce.SafeClusterName(d.clusterName)
var matches []*compute.Disk
ctx := context.Background()
// TODO: Push down tag filter?
err := c.Compute().Disks.AggregatedList(c.Project()).Pages(ctx, func(page *compute.DiskAggregatedList) error {
for _, list := range page.Items {
for _, d := range list.Disks {
match := false
for k, v := range d.Labels {
if k == gce.GceLabelNameKubernetesCluster {
if v == clusterTag {
match = true
} else {
match = false
break
}
}
}
if !match {
continue
}
matches = append(matches, d)
}
}
return nil
})
if err != nil {
return nil, fmt.Errorf("error listing disks: %v", err)
}
return matches, nil
}
func (d *clusterDiscoveryGCE) listGCEDisks() ([]*resources.Resource, error) {
var resourceTrackers []*resources.Resource
disks, err := d.findGCEDisks()
if err != nil {
return nil, err
}
for _, t := range disks {
resourceTracker := &resources.Resource{
Name: t.Name,
ID: t.Name,
Type: typeDisk,
Deleter: deleteGCEDisk,
Obj: t,
}
for _, u := range t.Users {
resourceTracker.Blocked = append(resourceTracker.Blocked, typeInstance+":"+gce.LastComponent(t.Zone)+"/"+gce.LastComponent(u))
}
glog.V(4).Infof("Found resource: %s", t.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return resourceTrackers, nil
}
func deleteGCEDisk(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.Disk)
glog.V(2).Infof("Deleting GCE Disk %s", t.SelfLink)
u, err := gce.ParseGoogleCloudURL(t.SelfLink)
if err != nil {
return err
}
op, err := c.Compute().Disks.Delete(u.Project, u.Zone, u.Name).Do()
if err != nil {
if gce.IsNotFound(err) {
glog.Infof("disk not found, assuming deleted: %q", t.SelfLink)
return nil
}
return fmt.Errorf("error deleting disk %s: %v", t.SelfLink, err)
}
return c.WaitForOp(op)
}
func (d *clusterDiscoveryGCE) listTargetPools() ([]*resources.Resource, error) {
c := d.gceCloud
var resourceTrackers []*resources.Resource
ctx := context.Background()
err := c.Compute().TargetPools.List(c.Project(), c.Region()).Pages(ctx, func(page *compute.TargetPoolList) error {
for _, tp := range page.Items {
if !d.matchesClusterName(tp.Name) {
continue
}
resourceTracker := &resources.Resource{
Name: tp.Name,
ID: tp.Name,
Type: typeTargetPool,
Deleter: deleteTargetPool,
Obj: tp,
}
glog.V(4).Infof("Found resource: %s", tp.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return nil
})
if err != nil {
return nil, fmt.Errorf("error listing TargetPools: %v", err)
}
return resourceTrackers, nil
}
func deleteTargetPool(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.TargetPool)
glog.V(2).Infof("Deleting GCE TargetPool %s", t.SelfLink)
u, err := gce.ParseGoogleCloudURL(t.SelfLink)
if err != nil {
return err
}
op, err := c.Compute().TargetPools.Delete(u.Project, u.Region, u.Name).Do()
if err != nil {
if gce.IsNotFound(err) {
glog.Infof("TargetPool not found, assuming deleted: %q", t.SelfLink)
return nil
}
return fmt.Errorf("error deleting TargetPool %s: %v", t.SelfLink, err)
}
return c.WaitForOp(op)
}
func (d *clusterDiscoveryGCE) listForwardingRules() ([]*resources.Resource, error) {
c := d.gceCloud
var resourceTrackers []*resources.Resource
ctx := context.Background()
err := c.Compute().ForwardingRules.List(c.Project(), c.Region()).Pages(ctx, func(page *compute.ForwardingRuleList) error {
for _, fr := range page.Items {
if !d.matchesClusterName(fr.Name) {
continue
}
resourceTracker := &resources.Resource{
Name: fr.Name,
ID: fr.Name,
Type: typeForwardingRule,
Deleter: deleteForwardingRule,
Obj: fr,
}
if fr.Target != "" {
resourceTracker.Blocks = append(resourceTracker.Blocks, typeTargetPool+":"+gce.LastComponent(fr.Target))
}
if fr.IPAddress != "" {
resourceTracker.Blocks = append(resourceTracker.Blocks, typeAddress+":"+gce.LastComponent(fr.IPAddress))
}
glog.V(4).Infof("Found resource: %s", fr.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return nil
})
if err != nil {
return nil, fmt.Errorf("error listing ForwardingRules: %v", err)
}
return resourceTrackers, nil
}
func deleteForwardingRule(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.ForwardingRule)
glog.V(2).Infof("Deleting GCE ForwardingRule %s", t.SelfLink)
u, err := gce.ParseGoogleCloudURL(t.SelfLink)
if err != nil {
return err
}
op, err := c.Compute().ForwardingRules.Delete(u.Project, u.Region, u.Name).Do()
if err != nil {
if gce.IsNotFound(err) {
glog.Infof("ForwardingRule not found, assuming deleted: %q", t.SelfLink)
return nil
}
return fmt.Errorf("error deleting ForwardingRule %s: %v", t.SelfLink, err)
}
return c.WaitForOp(op)
}
// listFirewallRules discovers Firewall objects for the cluster
func (d *clusterDiscoveryGCE) listFirewallRules() ([]*resources.Resource, error) {
c := d.gceCloud
var resourceTrackers []*resources.Resource
ctx := context.Background()
err := c.Compute().Firewalls.List(c.Project()).Pages(ctx, func(page *compute.FirewallList) error {
for _, fr := range page.Items {
if !d.matchesClusterNameMultipart(fr.Name, maxPrefixTokens) {
continue
}
foundMatchingTarget := false
tagPrefix := gce.SafeClusterName(d.clusterName) + "-"
for _, target := range fr.TargetTags {
if strings.HasPrefix(target, tagPrefix) {
foundMatchingTarget = true
}
}
if !foundMatchingTarget {
break
}
resourceTracker := &resources.Resource{
Name: fr.Name,
ID: fr.Name,
Type: typeFirewallRule,
Deleter: deleteFirewallRule,
Obj: fr,
}
glog.V(4).Infof("Found resource: %s", fr.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return nil
})
if err != nil {
return nil, fmt.Errorf("error listing FirewallRules: %v", err)
}
return resourceTrackers, nil
}
// deleteFirewallRule is the helper function to delete a Resource for a Firewall object
func deleteFirewallRule(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.Firewall)
glog.V(2).Infof("Deleting GCE FirewallRule %s", t.SelfLink)
u, err := gce.ParseGoogleCloudURL(t.SelfLink)
if err != nil {
return err
}
op, err := c.Compute().Firewalls.Delete(u.Project, u.Name).Do()
if err != nil {
if gce.IsNotFound(err) {
glog.Infof("FirewallRule not found, assuming deleted: %q", t.SelfLink)
return nil
}
return fmt.Errorf("error deleting FirewallRule %s: %v", t.SelfLink, err)
}
return c.WaitForOp(op)
}
func (d *clusterDiscoveryGCE) listRoutes(resourceMap map[string]*resources.Resource) ([]*resources.Resource, error) {
c := d.gceCloud
var resourceTrackers []*resources.Resource
instances := sets.NewString()
for _, resource := range resourceMap {
if resource.Type == typeInstance {
instances.Insert(resource.ID)
}
}
prefix := gce.SafeClusterName(d.clusterName) + "-"
ctx := context.Background()
// TODO: Push-down prefix?
err := c.Compute().Routes.List(c.Project()).Pages(ctx, func(page *compute.RouteList) error {
for _, r := range page.Items {
if !strings.HasPrefix(r.Name, prefix) {
continue
}
remove := false
for _, w := range r.Warnings {
switch w.Code {
case "NEXT_HOP_INSTANCE_NOT_FOUND":
remove = true
default:
glog.Infof("Unknown warning on route %q: %q", r.Name, w.Code)
}
}
if r.NextHopInstance != "" {
u, err := gce.ParseGoogleCloudURL(r.NextHopInstance)
if err != nil {
glog.Warningf("error parsing URL for NextHopInstance=%q", r.NextHopInstance)
}
if instances.Has(u.Zone + "/" + u.Name) {
remove = true
}
}
if remove {
resourceTracker := &resources.Resource{
Name: r.Name,
ID: r.Name,
Type: typeRoute,
Deleter: deleteRoute,
Obj: r,
}
// We don't need to block
//if r.NextHopInstance != "" {
// resourceTracker.Blocked = append(resourceTracker.Blocks, typeInstance+":"+gce.LastComponent(r.NextHopInstance))
//}
glog.V(4).Infof("Found resource: %s", r.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
}
return nil
})
if err != nil {
return nil, fmt.Errorf("error listing Routes: %v", err)
}
return resourceTrackers, nil
}
func deleteRoute(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.Route)
glog.V(2).Infof("Deleting GCE Route %s", t.SelfLink)
u, err := gce.ParseGoogleCloudURL(t.SelfLink)
if err != nil {
return err
}
op, err := c.Compute().Routes.Delete(u.Project, u.Name).Do()
if err != nil {
if gce.IsNotFound(err) {
glog.Infof("Route not found, assuming deleted: %q", t.SelfLink)
return nil
}
return fmt.Errorf("error deleting Route %s: %v", t.SelfLink, err)
}
return c.WaitForOp(op)
}
func (d *clusterDiscoveryGCE) listAddresses() ([]*resources.Resource, error) {
c := d.gceCloud
var resourceTrackers []*resources.Resource
ctx := context.Background()
err := c.Compute().Addresses.List(c.Project(), c.Region()).Pages(ctx, func(page *compute.AddressList) error {
for _, a := range page.Items {
if !d.matchesClusterName(a.Name) {
glog.V(8).Infof("Skipping Address with name %q", a.Name)
continue
}
resourceTracker := &resources.Resource{
Name: a.Name,
ID: a.Name,
Type: typeAddress,
Deleter: deleteAddress,
Obj: a,
}
glog.V(4).Infof("Found resource: %s", a.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return nil
})
if err != nil {
return nil, fmt.Errorf("error listing Addresses: %v", err)
}
return resourceTrackers, nil
}
func deleteAddress(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.Address)
glog.V(2).Infof("Deleting GCE Address %s", t.SelfLink)
u, err := gce.ParseGoogleCloudURL(t.SelfLink)
if err != nil {
return err
}
op, err := c.Compute().Addresses.Delete(u.Project, u.Region, u.Name).Do()
if err != nil {
if gce.IsNotFound(err) {
glog.Infof("Address not found, assuming deleted: %q", t.SelfLink)
return nil
}
return fmt.Errorf("error deleting Address %s: %v", t.SelfLink, err)
}
return c.WaitForOp(op)
}
func (d *clusterDiscoveryGCE) matchesClusterName(name string) bool {
return d.matchesClusterNameMultipart(name, 1)
}
// matchesClusterNameMultipart checks if the name could have been generated by our cluster
// considering all the prefixes separated by `-`. maxParts limits the number of parts we consider.
func (d *clusterDiscoveryGCE) matchesClusterNameMultipart(name string, maxParts int) bool {
tokens := strings.Split(name, "-")
for i := 1; i <= maxParts; i++ {
if i > len(tokens) {
break
}
id := strings.Join(tokens[:i], "-")
if id == "" {
continue
}
if name == gce.SafeObjectName(id, d.clusterName) {
return true
}
}
return false
}
func (d *clusterDiscoveryGCE) listGCEDNSZone() ([]*resources.Resource, error) {
// We never delete the hosted zone, because it is usually shared and we don't create it
return nil, nil
// TODO: When shared resource PR lands, reintroduce
//if dns.IsGossipHostname(d.clusterName) {
// return nil, nil
//}
//zone, err := d.findDNSZone()
//if err != nil {
// return nil, err
//}
//
//return []*resources.Resource{
// {
// Name: zone.Name(),
// ID: zone.Name(),
// Type: "DNS Zone",
// Deleter: d.deleteDNSZone,
// Obj: zone,
// },
//}, nil
}
func (d *clusterDiscoveryGCE) findDNSZone() (dnsprovider.Zone, error) {
dnsProvider, err := d.cloud.DNS()
if err != nil {
return nil, fmt.Errorf("Error getting dnsprovider: %v", err)
}
zonesLister, supported := dnsProvider.Zones()
if !supported {
return nil, fmt.Errorf("DNS provier does not support listing zones: %v", err)
}
allZones, err := zonesLister.List()
if err != nil {
return nil, fmt.Errorf("Error listing dns zones: %v", err)
}
for _, zone := range allZones {
if strings.Contains(d.clusterName, strings.TrimSuffix(zone.Name(), ".")) {
return zone, nil
}
}
return nil, fmt.Errorf("DNS Zone for cluster %s could not be found", d.clusterName)
}
func (d *clusterDiscoveryGCE) deleteDNSZone(cloud fi.Cloud, r *resources.Resource) error {
clusterZone := r.Obj.(dnsprovider.Zone)
rrs, supported := clusterZone.ResourceRecordSets()
if !supported {
return fmt.Errorf("ResourceRecordSets not supported with clouddns")
}
records, err := rrs.List()
if err != nil {
return fmt.Errorf("Failed to list resource records")
}
changeset := rrs.StartChangeset()
for _, record := range records {
if record.Type() != "A" {
continue
}
name := record.Name()
name = "." + strings.TrimSuffix(name, ".")
prefix := strings.TrimSuffix(name, "."+d.clusterName)
remove := false
// TODO: Compute the actual set of names?
if prefix == ".api" || prefix == ".api.internal" {
remove = true
} else if strings.HasPrefix(prefix, ".etcd-") {
remove = true
}
if !remove {
continue
}
changeset.Remove(record)
}
if changeset.IsEmpty() {
return nil
}
err = changeset.Apply()
if err != nil {
return fmt.Errorf("Error deleting cloud dns records: %v", err)
}
return nil
}