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gce.go
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gce.go
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/*
Copyright 2019 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"
compute "google.golang.org/api/compute/v1"
clouddns "google.golang.org/api/dns/v1"
"google.golang.org/api/iam/v1"
"k8s.io/klog/v2"
"k8s.io/kops/pkg/dns"
"k8s.io/kops/pkg/resources"
"k8s.io/kops/pkg/truncate"
"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"
typeHTTPHealthcheck = "HTTP HealthCheck"
typeHealthcheck = "HealthCheck"
typeAddress = "Address"
typeRoute = "Route"
typeNetwork = "Network"
typeSubnet = "Subnet"
typeRouter = "Router"
typeDNSRecord = "DNSRecord"
typeServiceAccount = "ServiceAccount"
typeBackendService = "BackendService"
)
// Maximum number of `-` separated tokens in a name
// Example: nodeport-external-to-node-ipv6
const maxPrefixTokens = 5
// Maximum length of a GCE route name
const maxGCERouteNameLength = 63
func ListResourcesGCE(gceCloud gce.GCECloud, clusterInfo resources.ClusterInfo) (map[string]*resources.Resource, error) {
clusterName := clusterInfo.Name
clusterUsesNoneDNS := clusterInfo.UsesNoneDNS
ctx := context.TODO()
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(ctx, d.gceCloud.Project())
if err != nil {
return nil, fmt.Errorf("error listing zones: %v", err)
}
for _, gceZone := range gceZones {
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)
}
klog.Infof("Scanning zones: %v", d.zones)
}
listFunctions := []gceListFn{
d.listGCEInstanceTemplates,
d.listInstanceGroupManagersAndInstances,
d.listTargetPools,
d.listForwardingRules,
d.listFirewallRules,
d.listGCEDisks,
// TODO: Find routes via instances (via instance groups)
d.listAddresses,
d.listSubnets,
d.listRouters,
d.listNetworks,
d.listServiceAccounts,
d.listBackendServices,
d.listHealthchecks,
}
if !dns.IsGossipClusterName(clusterName) && !clusterUsesNoneDNS {
listFunctions = append(listFunctions, d.listGCEDNSZone)
}
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.
{
resourceTrackers, err := d.listRoutes(ctx, 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,
}
for _, ni := range t.Properties.NetworkInterfaces {
if ni.Subnetwork != "" {
resourceTracker.Blocks = append(resourceTracker.Blocks, typeSubnet+":"+gce.LastComponent(ni.Subnetwork))
}
}
klog.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 {
is, err := c.Compute().InstanceGroupManagers().List(ctx, project, zoneName)
if err != nil {
return nil, fmt.Errorf("error listing InstanceGroupManagers: %v", err)
}
for i := range is {
mig := is[i] // avoid closure-in-loop go-tcha
instanceTemplate := instanceTemplates[mig.InstanceTemplate]
if instanceTemplate == nil {
klog.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)
klog.V(4).Infof("Found resource: %s", mig.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
instanceTrackers, err := d.listManagedInstances(mig)
if err != nil {
return nil, fmt.Errorf("error listing instances in InstanceGroupManager: %v", err)
}
resourceTrackers = append(resourceTrackers, instanceTrackers...)
}
}
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
clusterLabel := gce.LabelForCluster(d.clusterName)
var matches []*compute.Disk
ctx := context.Background()
// TODO: Push down tag filter?
diskLists, err := c.Compute().Disks().AggregatedList(ctx, c.Project())
if err != nil {
return nil, fmt.Errorf("error listing disks: %v", err)
}
for _, list := range diskLists {
for _, d := range list.Disks {
match := false
for k, v := range d.Labels {
if k == clusterLabel.Key {
if v == clusterLabel.Value {
match = true
} else {
match = false
break
}
}
}
if !match {
continue
}
matches = append(matches, d)
}
}
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))
}
klog.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)
klog.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)
if err != nil {
if gce.IsNotFound(err) {
klog.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()
tps, err := c.Compute().TargetPools().List(ctx, c.Project(), c.Region())
if err != nil {
return nil, fmt.Errorf("error listing TargetPools: %v", err)
}
for _, tp := range tps {
if !d.matchesClusterName(tp.Name) {
continue
}
resourceTracker := &resources.Resource{
Name: tp.Name,
ID: tp.Name,
Type: typeTargetPool,
Deleter: deleteTargetPool,
Obj: tp,
}
klog.V(4).Infof("Found resource: %s", tp.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
for _, healthCheckLink := range tp.HealthChecks {
healthCheckName := gce.LastComponent(healthCheckLink)
hc, err := c.Compute().HTTPHealthChecks().Get(c.Project(), healthCheckName)
if err != nil {
return nil, fmt.Errorf("error getting HTTPHealthCheck %q: %w", healthCheckName, err)
}
healthCheckResource := &resources.Resource{
Name: hc.Name,
ID: hc.Name,
Type: typeHTTPHealthcheck,
Deleter: deleteHTTPHealthCheck,
Obj: hc,
}
healthCheckResource.Blocked = append(healthCheckResource.Blocked, resourceTracker.Type+":"+resourceTracker.ID)
resourceTrackers = append(resourceTrackers, healthCheckResource)
}
}
return resourceTrackers, nil
}
func deleteTargetPool(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.TargetPool)
klog.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)
if err != nil {
if gce.IsNotFound(err) {
klog.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()
frs, err := c.Compute().ForwardingRules().List(ctx, c.Project(), c.Region())
if err != nil {
return nil, fmt.Errorf("error listing ForwardingRules: %v", err)
}
for _, fr := range frs {
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))
}
klog.V(4).Infof("Found resource: %s", fr.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return resourceTrackers, nil
}
func deleteForwardingRule(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.ForwardingRule)
klog.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)
if err != nil {
if gce.IsNotFound(err) {
klog.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()
firewallRules, err := c.Compute().Firewalls().List(ctx, c.Project())
if err != nil {
return nil, fmt.Errorf("error listing FirewallRules: %v", err)
}
nextFirewallRule:
for _, firewallRule := range firewallRules {
if !d.matchesClusterNameMultipart(firewallRule.Name, maxPrefixTokens) && !strings.HasPrefix(firewallRule.Name, "k8s-") {
continue
}
// TODO: Check network? (or other fields?) No label support currently.
// We consider only firewall rules that target our cluster tags, which include the cluster name or hash
tagPrefix := gce.SafeClusterName(d.clusterName) + "-"
clusterNameHash := truncate.HashString(gce.SafeClusterName(d.clusterName), 6)
if len(firewallRule.TargetTags) != 0 {
tagMatchCount := 0
for _, target := range firewallRule.TargetTags {
if strings.HasPrefix(target, tagPrefix) || strings.Contains(target, clusterNameHash) {
tagMatchCount++
}
}
if len(firewallRule.TargetTags) != tagMatchCount {
continue nextFirewallRule
}
}
// We don't have any rules that match only on source tags, but if we did we could check them here
if len(firewallRule.TargetTags) == 0 {
continue nextFirewallRule
}
firewallRuleResource := &resources.Resource{
Name: firewallRule.Name,
ID: firewallRule.Name,
Type: typeFirewallRule,
Deleter: deleteFirewallRule,
Obj: firewallRule,
}
firewallRuleResource.Blocks = append(firewallRuleResource.Blocks, typeNetwork+":"+gce.LastComponent(firewallRule.Network))
if d.matchesClusterNameMultipart(firewallRule.Name, maxPrefixTokens) {
klog.V(4).Infof("Found resource: %s", firewallRule.SelfLink)
resourceTrackers = append(resourceTrackers, firewallRuleResource)
}
// find the objects if this is a Kubernetes LoadBalancer
if strings.HasPrefix(firewallRule.Name, "k8s-fw-") {
// We build a list of resources if this is a k8s firewall rule,
// but we only add them once all the checks are complete
var k8sResources []*resources.Resource
k8sResources = append(k8sResources, firewallRuleResource)
// We lookup the forwarding rule by name, but we then validate that it points to one of our resources
forwardingRuleName := strings.TrimPrefix(firewallRule.Name, "k8s-fw-")
forwardingRule, err := c.Compute().ForwardingRules().Get(c.Project(), c.Region(), forwardingRuleName)
if err != nil {
if gce.IsNotFound(err) {
// We looked it up by name, so an error isn't unlikely
klog.Warningf("could not find forwarding rule %q, assuming firewallRule %q is not a k8s rule", forwardingRuleName, firewallRule.Name)
continue nextFirewallRule
}
return nil, fmt.Errorf("error getting ForwardingRule %q: %w", forwardingRuleName, err)
}
forwardingRuleResource := &resources.Resource{
Name: forwardingRule.Name,
ID: forwardingRule.Name,
Type: typeForwardingRule,
Deleter: deleteForwardingRule,
Obj: forwardingRule,
}
if forwardingRule.Target != "" {
forwardingRuleResource.Blocks = append(forwardingRuleResource.Blocks, typeTargetPool+":"+gce.LastComponent(forwardingRule.Target))
}
k8sResources = append(k8sResources, forwardingRuleResource)
// TODO: Can we get k8s to set labels on the ForwardingRule?
// TODO: Check description? It looks like e.g. description: '{"kubernetes.io/service-name":"kube-system/guestbook"}'
if forwardingRule.Target == "" {
klog.Warningf("forwarding rule %q did not have target, assuming firewallRule %q is not a k8s rule", forwardingRuleName, firewallRule.Name)
continue nextFirewallRule
}
targetPoolName := gce.LastComponent(forwardingRule.Target)
targetPool, err := c.Compute().TargetPools().Get(c.Project(), c.Region(), targetPoolName)
if err != nil {
return nil, fmt.Errorf("error getting TargetPool %q: %w", targetPoolName, err)
}
targetPoolResource := &resources.Resource{
Name: targetPool.Name,
ID: targetPool.Name,
Type: typeTargetPool,
Deleter: deleteTargetPool,
Obj: targetPool,
}
k8sResources = append(k8sResources, targetPoolResource)
// TODO: Check description? (looks like description: '{"kubernetes.io/service-name":"k8s-dbb09d49d9780e7e-node"}' )
// TODO: Check instances?
for _, healthCheckLink := range targetPool.HealthChecks {
// l4 level healthchecks
healthCheckName := gce.LastComponent(healthCheckLink)
if !strings.HasPrefix(healthCheckName, "k8s-") || !strings.Contains(healthCheckLink, "/httpHealthChecks/") {
klog.Warningf("found non-k8s healthcheck %q in targetPool %q, assuming firewallRule %q is not a k8s rule", healthCheckLink, targetPoolName, firewallRule.Name)
continue nextFirewallRule
}
hc, err := c.Compute().HTTPHealthChecks().Get(c.Project(), healthCheckName)
if err != nil {
return nil, fmt.Errorf("error getting HTTPHealthCheck %q: %w", healthCheckName, err)
}
// TODO: Check description? (looks like description: '{"kubernetes.io/service-name":"k8s-dbb09d49d9780e7e-node"}' )
healthCheckResource := &resources.Resource{
Name: hc.Name,
ID: hc.Name,
Type: typeHTTPHealthcheck,
Deleter: deleteHTTPHealthCheck,
Obj: hc,
}
healthCheckResource.Blocked = append(healthCheckResource.Blocked, targetPoolResource.Type+":"+targetPoolResource.ID)
k8sResources = append(k8sResources, healthCheckResource)
}
// We now have confidence that this is a k8s LoadBalancer; add the resources
resourceTrackers = append(resourceTrackers, k8sResources...)
}
// find the objects if this is a Kubernetes node health check
if strings.HasPrefix(firewallRule.Name, "k8s-") && strings.HasSuffix(firewallRule.Name, "-node-http-hc") {
// TODO: Check port matches http health check (always 10256?)
// TODO: Check description - looks like '{"kubernetes.io/cluster-id":"cb2e931dec561053"}'
// We already know the target tags match
resourceTrackers = append(resourceTrackers, firewallRuleResource)
}
}
return resourceTrackers, nil
}
// deleteHTTPHealthCheck is the helper function to delete a Resource for a HTTP health check object
func deleteHTTPHealthCheck(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.HttpHealthCheck)
klog.V(2).Infof("Deleting GCE HTTP HealthCheck %s", t.SelfLink)
u, err := gce.ParseGoogleCloudURL(t.SelfLink)
if err != nil {
return err
}
op, err := c.Compute().HTTPHealthChecks().Delete(u.Project, u.Name)
if err != nil {
if gce.IsNotFound(err) {
klog.Infof("HTTP HealthCheck not found, assuming deleted: %q", t.SelfLink)
return nil
}
return fmt.Errorf("error deleting HTTP HealthCheck %s: %v", t.SelfLink, err)
}
return c.WaitForOp(op)
}
// 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)
klog.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)
if err != nil {
if gce.IsNotFound(err) {
klog.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(ctx context.Context, resourceMap map[string]*resources.Resource) ([]*resources.Resource, error) {
c := d.gceCloud
var resourceTrackers []*resources.Resource
instancesToDelete := make(map[string]*resources.Resource)
for _, resource := range resourceMap {
if resource.Type == typeInstance {
instancesToDelete[resource.ID] = resource
}
}
// TODO: Push-down prefix?
routes, err := c.Compute().Routes().List(ctx, c.Project())
if err != nil {
return nil, fmt.Errorf("error listing Routes: %w", err)
}
for _, r := range routes {
if !d.matchesClusterNameWithUUID(r.Name, maxGCERouteNameLength) {
continue
}
remove := false
for _, w := range r.Warnings {
switch w.Code {
case "NEXT_HOP_INSTANCE_NOT_FOUND":
remove = true
case "NEXT_HOP_NOT_RUNNING":
// It might not be running, but it probably exists.
remove = false
default:
klog.Infof("Unknown warning on route %q: %q", r.Name, w.Code)
}
}
if r.NextHopInstance != "" {
u, err := gce.ParseGoogleCloudURL(r.NextHopInstance)
if err != nil {
klog.Warningf("error parsing URL for NextHopInstance=%q", r.NextHopInstance)
}
if instancesToDelete[u.Zone+"/"+u.Name] != nil {
remove = true
}
}
if remove {
resourceTracker := &resources.Resource{
Name: r.Name,
ID: r.Name,
Type: typeRoute,
Deleter: deleteRoute,
Obj: r,
}
// To avoid race conditions where the control-plane re-adds the routes, we delete routes
// only after we have deleted all the instances.
for _, instance := range instancesToDelete {
resourceTracker.Blocked = append(resourceTracker.Blocked, typeInstance+":"+instance.ID)
}
klog.V(4).Infof("Found resource: %s", r.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
}
return resourceTrackers, nil
}
func deleteRoute(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.Route)
klog.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)
if err != nil {
if gce.IsNotFound(err) {
klog.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()
addrs, err := c.Compute().Addresses().List(ctx, c.Project(), c.Region())
if err != nil {
return nil, fmt.Errorf("error listing Addresses: %v", err)
}
for _, a := range addrs {
if !d.matchesClusterName(a.Name) {
klog.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,
}
klog.V(4).Infof("Found resource: %s", a.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return resourceTrackers, nil
}
func deleteAddress(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
t := r.Obj.(*compute.Address)
klog.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)
if err != nil {
if gce.IsNotFound(err) {
klog.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) listSubnets() ([]*resources.Resource, error) {
// Templates are very accurate because of the metadata, so use those as the sanity check
templates, err := d.findInstanceTemplates()
if err != nil {
return nil, err
}
subnetworkUrls := make(map[string]bool)
for _, t := range templates {
for _, ni := range t.Properties.NetworkInterfaces {
if ni.Subnetwork != "" {
subnetworkUrls[ni.Subnetwork] = true
}
}
}
c := d.gceCloud
var resourceTrackers []*resources.Resource
ctx := context.Background()
subnets, err := c.Compute().Subnetworks().List(ctx, c.Project(), c.Region())
if err != nil {
return nil, fmt.Errorf("error listing subnetworks: %v", err)
}
for _, o := range subnets {
if !d.matchesClusterName(o.Name) {
klog.V(8).Infof("skipping Subnet with name %q", o.Name)
continue
}
if !subnetworkUrls[o.SelfLink] {
klog.Warningf("skipping subnetwork %q because it didn't match any instance template", o.SelfLink)
continue
}
resourceTracker := &resources.Resource{
Name: o.Name,
ID: o.Name,
Type: typeSubnet,
Deleter: deleteSubnet,
Obj: o,
Dumper: DumpSubnetwork,
}
resourceTracker.Blocks = append(resourceTracker.Blocks, typeNetwork+":"+gce.LastComponent(o.Network))
klog.V(4).Infof("found resource: %s", o.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return resourceTrackers, nil
}
func deleteSubnet(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
o := r.Obj.(*compute.Subnetwork)
klog.V(2).Infof("deleting GCE subnetwork %s", o.SelfLink)
u, err := gce.ParseGoogleCloudURL(o.SelfLink)
if err != nil {
return err
}
op, err := c.Compute().Subnetworks().Delete(u.Project, u.Region, u.Name)
if err != nil {
if gce.IsNotFound(err) {
klog.Infof("subnetwork not found, assuming deleted: %q", o.SelfLink)
return nil
}
return fmt.Errorf("error deleting subnetwork %s: %v", o.SelfLink, err)
}
return c.WaitForOp(op)
}
func (d *clusterDiscoveryGCE) listRouters() ([]*resources.Resource, error) {
c := d.gceCloud
var resourceTrackers []*resources.Resource
ctx := context.Background()
routers, err := c.Compute().Routers().List(ctx, c.Project(), c.Region())
if err != nil {
return nil, fmt.Errorf("error listing routers: %v", err)
}
for _, o := range routers {
if !d.matchesClusterName(o.Name) {
klog.V(8).Infof("skipping Router with name %q", o.Name)
continue
}
resourceTracker := &resources.Resource{
Name: o.Name,
ID: o.Name,
Type: typeRouter,
Deleter: deleteRouter,
Obj: o,
}
klog.V(4).Infof("found resource: %s", o.SelfLink)
resourceTrackers = append(resourceTrackers, resourceTracker)
}
return resourceTrackers, nil
}
func deleteRouter(cloud fi.Cloud, r *resources.Resource) error {
c := cloud.(gce.GCECloud)
o := r.Obj.(*compute.Router)
klog.V(2).Infof("deleting GCE router %s", o.SelfLink)
u, err := gce.ParseGoogleCloudURL(o.SelfLink)
if err != nil {
return err
}
op, err := c.Compute().Routers().Delete(u.Project, u.Region, u.Name)
if err != nil {
if gce.IsNotFound(err) {
klog.Infof("router not found, assuming deleted: %q", o.SelfLink)
return nil
}
return fmt.Errorf("error deleting router %s: %v", o.SelfLink, err)
}