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controlplane.go
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controlplane.go
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// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package controlplane
import (
"context"
"time"
"github.com/go-logr/logr"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/component"
"github.com/gardener/gardener/pkg/controllerutils"
"github.com/gardener/gardener/pkg/extensions"
)
const (
// DefaultInterval is the default interval for retry operations.
DefaultInterval = 5 * time.Second
// DefaultSevereThreshold is the default threshold until an error reported by another component is treated as
// 'severe'.
DefaultSevereThreshold = 30 * time.Second
// DefaultTimeout is the default timeout and defines how long Gardener should wait for a successful reconciliation
// of a ControlPlane resource.
DefaultTimeout = 3 * time.Minute
)
// TimeNow returns the current time. Exposed for testing.
var TimeNow = time.Now
// Interface is an interface for managing ControlPlanes.
type Interface interface {
component.DeployMigrateWaiter
SetInfrastructureProviderStatus(*runtime.RawExtension)
ProviderStatus() *runtime.RawExtension
}
// Values contains the values used to create an ControlPlane resources.
type Values struct {
// Namespace is the Shoot namespace in the seed.
Namespace string
// Name is the name of the ControlPlane resource. Commonly the Shoot's name.
Name string
// Type is the type of the ControlPlane provider.
Type string
// ProviderConfig contains the provider config for the ControlPlane provider.
ProviderConfig *runtime.RawExtension
// Purpose is the purpose of the ControlPlane resource (normal/exposure).
Purpose extensionsv1alpha1.Purpose
// Region is the region of the shoot.
Region string
// InfrastructureProviderStatus is the provider status of the Infrastructure resource which might be relevant for
// the ControlPlane reconciliation.
InfrastructureProviderStatus *runtime.RawExtension
}
// New creates a new instance of Interface.
func New(
log logr.Logger,
client client.Client,
values *Values,
waitInterval time.Duration,
waitSevereThreshold time.Duration,
waitTimeout time.Duration,
) Interface {
name := values.Name
if values.Purpose == extensionsv1alpha1.Exposure {
name += "-exposure"
}
return &controlPlane{
log: log,
client: client,
values: values,
waitInterval: waitInterval,
waitSevereThreshold: waitSevereThreshold,
waitTimeout: waitTimeout,
controlPlane: &extensionsv1alpha1.ControlPlane{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: values.Namespace,
},
},
}
}
type controlPlane struct {
values *Values
log logr.Logger
client client.Client
waitInterval time.Duration
waitSevereThreshold time.Duration
waitTimeout time.Duration
controlPlane *extensionsv1alpha1.ControlPlane
providerStatus *runtime.RawExtension
}
// Deploy uses the seed client to create or update the ControlPlane resource.
func (c *controlPlane) Deploy(ctx context.Context) error {
_, err := c.deploy(ctx, v1beta1constants.GardenerOperationReconcile)
return err
}
func (c *controlPlane) deploy(ctx context.Context, operation string) (extensionsv1alpha1.Object, error) {
var providerConfig *runtime.RawExtension
if cfg := c.values.ProviderConfig; cfg != nil {
providerConfig = &runtime.RawExtension{Raw: cfg.Raw}
}
_, err := controllerutils.GetAndCreateOrMergePatch(ctx, c.client, c.controlPlane, func() error {
metav1.SetMetaDataAnnotation(&c.controlPlane.ObjectMeta, v1beta1constants.GardenerOperation, operation)
metav1.SetMetaDataAnnotation(&c.controlPlane.ObjectMeta, v1beta1constants.GardenerTimestamp, TimeNow().UTC().Format(time.RFC3339Nano))
c.controlPlane.Spec = extensionsv1alpha1.ControlPlaneSpec{
DefaultSpec: extensionsv1alpha1.DefaultSpec{
Type: c.values.Type,
ProviderConfig: providerConfig,
},
Region: c.values.Region,
Purpose: &c.values.Purpose,
SecretRef: corev1.SecretReference{
Name: v1beta1constants.SecretNameCloudProvider,
Namespace: c.controlPlane.Namespace,
},
InfrastructureProviderStatus: c.values.InfrastructureProviderStatus,
}
return nil
})
return c.controlPlane, err
}
// Restore uses the seed client and the ShootState to create the ControlPlane resources and restore their state.
func (c *controlPlane) Restore(ctx context.Context, shootState *gardencorev1beta1.ShootState) error {
return extensions.RestoreExtensionWithDeployFunction(
ctx,
c.client,
shootState,
extensionsv1alpha1.ControlPlaneResource,
c.deploy,
)
}
// Migrate migrates the ControlPlane resources.
func (c *controlPlane) Migrate(ctx context.Context) error {
return extensions.MigrateExtensionObjects(
ctx,
c.client,
&extensionsv1alpha1.ControlPlaneList{},
c.values.Namespace,
nil,
)
}
// Destroy deletes the ControlPlane resource.
func (c *controlPlane) Destroy(ctx context.Context) error {
return extensions.DeleteExtensionObject(
ctx,
c.client,
c.controlPlane,
)
}
// Wait waits until the ControlPlane resource is ready.
func (c *controlPlane) Wait(ctx context.Context) error {
return extensions.WaitUntilExtensionObjectReady(
ctx,
c.client,
c.log,
c.controlPlane,
extensionsv1alpha1.ControlPlaneResource,
c.waitInterval,
c.waitSevereThreshold,
c.waitTimeout,
func() error {
c.providerStatus = c.controlPlane.Status.ProviderStatus
return nil
},
)
}
// WaitMigrate waits until the ControlPlane resources are migrated successfully.
func (c *controlPlane) WaitMigrate(ctx context.Context) error {
return extensions.WaitUntilExtensionObjectMigrated(
ctx,
c.client,
c.controlPlane,
extensionsv1alpha1.ControlPlaneResource,
c.waitInterval,
c.waitTimeout,
)
}
// WaitCleanup waits until the ControlPlane resource is deleted.
func (c *controlPlane) WaitCleanup(ctx context.Context) error {
return extensions.WaitUntilExtensionObjectDeleted(
ctx,
c.client,
c.log,
c.controlPlane,
extensionsv1alpha1.ControlPlaneResource,
c.waitInterval,
c.waitTimeout,
)
}
// SetInfrastructureProviderStatus sets the infrastructure provider status in the values.
func (c *controlPlane) SetInfrastructureProviderStatus(status *runtime.RawExtension) {
c.values.InfrastructureProviderStatus = status
}
// ProviderStatus returns the generated status of the provider.
func (c *controlPlane) ProviderStatus() *runtime.RawExtension {
return c.providerStatus
}