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actuator_delete.go
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/
actuator_delete.go
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package infrastructure
import (
"context"
"fmt"
"time"
"github.com/go-logr/logr"
metalapi "github.com/metal-stack/gardener-extension-provider-metal/pkg/apis/metal"
"github.com/metal-stack/gardener-extension-provider-metal/pkg/apis/metal/helper"
metalclient "github.com/metal-stack/gardener-extension-provider-metal/pkg/metal/client"
metalgo "github.com/metal-stack/metal-go"
metalip "github.com/metal-stack/metal-go/api/client/ip"
"github.com/metal-stack/metal-go/api/client/network"
"github.com/metal-stack/metal-go/api/models"
extensionscontroller "github.com/gardener/gardener/extensions/pkg/controller"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/controllerutils/reconciler"
admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
)
type networkDeleter struct {
ctx context.Context
logger logr.Logger
cluster *extensionscontroller.Cluster
infrastructure *extensionsv1alpha1.Infrastructure
infrastructureConfig *metalapi.InfrastructureConfig
mclient metalgo.Client
clusterID string
}
func (a *actuator) Delete(ctx context.Context, logger logr.Logger, infrastructure *extensionsv1alpha1.Infrastructure, cluster *extensionscontroller.Cluster) error {
internalInfrastructureConfig, _, err := decodeInfrastructure(infrastructure, a.decoder)
if err != nil {
return err
}
cloudProfileConfig, err := helper.CloudProfileConfigFromCluster(cluster)
if err != nil {
return err
}
metalControlPlane, _, err := helper.FindMetalControlPlane(cloudProfileConfig, internalInfrastructureConfig.PartitionID)
if err != nil {
return err
}
mclient, err := metalclient.NewClient(ctx, a.client, metalControlPlane.Endpoint, &infrastructure.Spec.SecretRef)
if err != nil {
return err
}
deleter := &networkDeleter{
ctx: ctx,
logger: logger,
cluster: cluster,
infrastructure: infrastructure,
infrastructureConfig: internalInfrastructureConfig,
mclient: mclient,
clusterID: string(cluster.Shoot.GetUID()),
}
err = a.releaseNetworkResources(deleter)
if err != nil {
return &reconciler.RequeueAfterError{
Cause: err,
RequeueAfter: 30 * time.Second,
}
}
// the valuesprovider is unable to cleanup the mutating and validating webhooks
// because these are not namespaced and the names are determined at runtime
//
// so we clean it up here after control plane has terminated.
name := "firewall-controller-manager-" + cluster.ObjectMeta.Name
mwc := &admissionregistrationv1.MutatingWebhookConfiguration{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
}
err = a.client.Delete(ctx, mwc)
if client.IgnoreNotFound(err) != nil {
return fmt.Errorf("unable to cleanup firewall-controller-manager mutating webhook")
}
vwc := &admissionregistrationv1.ValidatingWebhookConfiguration{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
}
err = a.client.Delete(ctx, vwc)
if client.IgnoreNotFound(err) != nil {
return fmt.Errorf("unable to cleanup firewall-controller-manager validating webhook")
}
return nil
}
func (a *actuator) releaseNetworkResources(d *networkDeleter) error {
ipsToFree, ipsToUpdate, err := metalclient.GetEphemeralIPsFromCluster(d.ctx, d.mclient, d.infrastructureConfig.ProjectID, d.clusterID)
if err != nil {
d.logger.Error(err, "failed to query ephemeral cluster ips", "infrastructure", d.infrastructure.Name, "clusterID", d.clusterID)
return err
}
for _, ip := range ipsToFree {
_, err := d.mclient.IP().FreeIP(metalip.NewFreeIPParams().WithID(*ip.Ipaddress).WithContext(d.ctx), nil)
if err != nil {
d.logger.Error(err, "failed to release ephemeral cluster ip", "infrastructure", d.infrastructure.Name, "ip", *ip.Ipaddress)
return err
}
}
for _, ip := range ipsToUpdate {
err := metalclient.UpdateIPInCluster(d.ctx, d.mclient, ip, d.clusterID)
if err != nil {
d.logger.Error(err, "failed to remove cluster tags from ip which is member of other clusters", "infrastructure", d.infrastructure.Name, "ip", *ip.Ipaddress)
return err
}
}
resp, err := d.mclient.IP().FindIPs(metalip.NewFindIPsParams().WithBody(&models.V1IPFindRequest{
Projectid: d.infrastructureConfig.ProjectID,
Tags: []string{egressTag(d.clusterID)},
Type: models.V1IPBaseTypeStatic,
}).WithContext(d.ctx), nil)
if err != nil {
return fmt.Errorf("failed to list egress ips of cluster %w", err)
}
for _, ip := range resp.Payload {
if err := clearIPTags(d.ctx, d.mclient, *ip.Ipaddress); err != nil {
return fmt.Errorf("could not remove egress tag from ip %s %w", *ip.Ipaddress, err)
}
}
nodeCIDR, err := helper.GetNodeCIDR(d.infrastructure, d.cluster)
if err != nil {
return fmt.Errorf("unable to cleanup private networks as the node cidr is not defined: %w", err)
}
privateNetworks, err := metalclient.GetPrivateNetworksFromNodeNetwork(d.ctx, d.mclient, d.infrastructureConfig.ProjectID, nodeCIDR)
if err != nil {
d.logger.Error(err, "failed to query private network", "infrastructure", d.infrastructure.Name, "nodeCIDR", nodeCIDR)
return err
}
for _, pn := range privateNetworks {
_, err := d.mclient.Network().FreeNetwork(network.NewFreeNetworkParams().WithID(*pn.ID).WithContext(d.ctx), nil)
if err != nil {
d.logger.Error(err, "failed to release private network", "infrastructure", d.infrastructure.Name, "networkID", *pn.ID)
return err
}
}
return nil
}