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bootstrap.go
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bootstrap.go
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// Copyright 2023 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 machinecontrollermanager
import (
"context"
"time"
machinev1alpha1 "github.com/gardener/machine-controller-manager/pkg/apis/machine/v1alpha1"
coordinationv1 "k8s.io/api/coordination/v1"
corev1 "k8s.io/api/core/v1"
rbacv1 "k8s.io/api/rbac/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/gardener/gardener/pkg/client/kubernetes"
"github.com/gardener/gardener/pkg/component"
"github.com/gardener/gardener/pkg/utils/managedresources"
)
const (
managedResourceControlName = "machine-controller-manager"
clusterRoleName = "system:machine-controller-manager-runtime"
)
// NewBootstrapper creates a new instance of DeployWaiter for the machine-controller-manager bootstrapper.
func NewBootstrapper(client client.Client, namespace string) component.DeployWaiter {
return &bootstrapper{
client: client,
namespace: namespace,
}
}
type bootstrapper struct {
client client.Client
namespace string
}
func (b *bootstrapper) Deploy(ctx context.Context) error {
var (
registry = managedresources.NewRegistry(kubernetes.SeedScheme, kubernetes.SeedCodec, kubernetes.SeedSerializer)
clusterRole = &rbacv1.ClusterRole{
ObjectMeta: metav1.ObjectMeta{
Name: clusterRoleName,
},
Rules: []rbacv1.PolicyRule{
{
APIGroups: []string{machinev1alpha1.GroupName},
Resources: []string{"*"},
Verbs: []string{"*"},
},
{
APIGroups: []string{corev1.GroupName},
Resources: []string{"configmaps", "secrets", "endpoints", "events", "pods"},
Verbs: []string{"*"},
},
{
APIGroups: []string{coordinationv1.GroupName},
Resources: []string{"leases"},
Verbs: []string{"create"},
},
{
APIGroups: []string{coordinationv1.GroupName},
Resources: []string{"leases"},
Verbs: []string{"get", "watch", "update"},
ResourceNames: []string{"machine-controller", "machine-controller-manager"},
},
},
}
)
resources, err := registry.AddAllAndSerialize(clusterRole)
if err != nil {
return err
}
return managedresources.CreateForSeed(ctx, b.client, b.namespace, managedResourceControlName, false, resources)
}
func (b *bootstrapper) Destroy(ctx context.Context) error {
return managedresources.DeleteForSeed(ctx, b.client, b.namespace, managedResourceControlName)
}
// TimeoutWaitForManagedResource is the timeout used while waiting for the ManagedResources to become healthy
// or deleted.
var TimeoutWaitForManagedResource = 2 * time.Minute
func (b *bootstrapper) Wait(ctx context.Context) error {
timeoutCtx, cancel := context.WithTimeout(ctx, TimeoutWaitForManagedResource)
defer cancel()
return managedresources.WaitUntilHealthy(timeoutCtx, b.client, b.namespace, managedResourceControlName)
}
func (b *bootstrapper) WaitCleanup(ctx context.Context) error {
timeoutCtx, cancel := context.WithTimeout(ctx, TimeoutWaitForManagedResource)
defer cancel()
return managedresources.WaitUntilDeleted(timeoutCtx, b.client, b.namespace, managedResourceControlName)
}