/
factory.go
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/
factory.go
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// Copyright (c) 2018 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 controller
import (
"context"
"fmt"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
gardencoreinformers "github.com/gardener/gardener/pkg/client/core/informers/externalversions"
"github.com/gardener/gardener/pkg/client/kubernetes/clientmap"
"github.com/gardener/gardener/pkg/client/kubernetes/clientmap/keys"
"github.com/gardener/gardener/pkg/controllermanager"
"github.com/gardener/gardener/pkg/controllermanager/apis/config"
csrcontroller "github.com/gardener/gardener/pkg/controllermanager/controller/certificatesigningrequest"
cloudprofilecontroller "github.com/gardener/gardener/pkg/controllermanager/controller/cloudprofile"
controllerregistrationcontroller "github.com/gardener/gardener/pkg/controllermanager/controller/controllerregistration"
plantcontroller "github.com/gardener/gardener/pkg/controllermanager/controller/plant"
projectcontroller "github.com/gardener/gardener/pkg/controllermanager/controller/project"
quotacontroller "github.com/gardener/gardener/pkg/controllermanager/controller/quota"
secretbindingcontroller "github.com/gardener/gardener/pkg/controllermanager/controller/secretbinding"
seedcontroller "github.com/gardener/gardener/pkg/controllermanager/controller/seed"
shootcontroller "github.com/gardener/gardener/pkg/controllermanager/controller/shoot"
gardenmetrics "github.com/gardener/gardener/pkg/controllerutils/metrics"
"github.com/gardener/gardener/pkg/logger"
"github.com/gardener/gardener/pkg/operation/garden"
"github.com/gardener/gardener/pkg/version"
"k8s.io/apimachinery/pkg/util/runtime"
kubeinformers "k8s.io/client-go/informers"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/record"
)
// GardenControllerFactory contains information relevant to controllers for the Garden API group.
type GardenControllerFactory struct {
cfg *config.ControllerManagerConfiguration
clientMap clientmap.ClientMap
k8sGardenCoreInformers gardencoreinformers.SharedInformerFactory
k8sInformers kubeinformers.SharedInformerFactory
recorder record.EventRecorder
}
// NewGardenControllerFactory creates a new factory for controllers for the Garden API group.
func NewGardenControllerFactory(clientMap clientmap.ClientMap, gardenCoreInformerFactory gardencoreinformers.SharedInformerFactory, kubeInformerFactory kubeinformers.SharedInformerFactory, cfg *config.ControllerManagerConfiguration, recorder record.EventRecorder) *GardenControllerFactory {
return &GardenControllerFactory{
cfg: cfg,
clientMap: clientMap,
k8sGardenCoreInformers: gardenCoreInformerFactory,
k8sInformers: kubeInformerFactory,
recorder: recorder,
}
}
// Run starts all the controllers for the Garden API group. It also performs bootstrapping tasks.
func (f *GardenControllerFactory) Run(ctx context.Context) {
var (
// Garden core informers
backupBucketInformer = f.k8sGardenCoreInformers.Core().V1beta1().BackupBuckets().Informer()
backupEntryInformer = f.k8sGardenCoreInformers.Core().V1beta1().BackupEntries().Informer()
cloudProfileInformer = f.k8sGardenCoreInformers.Core().V1beta1().CloudProfiles().Informer()
controllerRegistrationInformer = f.k8sGardenCoreInformers.Core().V1beta1().ControllerRegistrations().Informer()
controllerInstallationInformer = f.k8sGardenCoreInformers.Core().V1beta1().ControllerInstallations().Informer()
quotaInformer = f.k8sGardenCoreInformers.Core().V1beta1().Quotas().Informer()
plantInformer = f.k8sGardenCoreInformers.Core().V1beta1().Plants().Informer()
projectInformer = f.k8sGardenCoreInformers.Core().V1beta1().Projects().Informer()
secretBindingInformer = f.k8sGardenCoreInformers.Core().V1beta1().SecretBindings().Informer()
seedInformer = f.k8sGardenCoreInformers.Core().V1beta1().Seeds().Informer()
shootInformer = f.k8sGardenCoreInformers.Core().V1beta1().Shoots().Informer()
// Kubernetes core informers
configMapInformer = f.k8sInformers.Core().V1().ConfigMaps().Informer()
csrInformer = f.k8sInformers.Certificates().V1beta1().CertificateSigningRequests().Informer()
namespaceInformer = f.k8sInformers.Core().V1().Namespaces().Informer()
secretInformer = f.k8sInformers.Core().V1().Secrets().Informer()
rolebindingInformer = f.k8sInformers.Rbac().V1().RoleBindings().Informer()
leaseInformer = f.k8sInformers.Coordination().V1().Leases().Informer()
)
if err := f.clientMap.Start(ctx.Done()); err != nil {
panic(fmt.Errorf("failed to start ClientMap: %+v", err))
}
k8sGardenClient, err := f.clientMap.GetClient(ctx, keys.ForGarden())
if err != nil {
panic(fmt.Errorf("failed to get garden client: %+v", err))
}
f.k8sGardenCoreInformers.Start(ctx.Done())
if !cache.WaitForCacheSync(ctx.Done(), backupBucketInformer.HasSynced, backupEntryInformer.HasSynced, controllerRegistrationInformer.HasSynced, controllerInstallationInformer.HasSynced, plantInformer.HasSynced, cloudProfileInformer.HasSynced, secretBindingInformer.HasSynced, quotaInformer.HasSynced, projectInformer.HasSynced, seedInformer.HasSynced, shootInformer.HasSynced) {
panic("Timed out waiting for Garden core caches to sync")
}
f.k8sInformers.Start(ctx.Done())
if !cache.WaitForCacheSync(ctx.Done(), configMapInformer.HasSynced, csrInformer.HasSynced, namespaceInformer.HasSynced, secretInformer.HasSynced, rolebindingInformer.HasSynced, leaseInformer.HasSynced) {
panic("Timed out waiting for Kube caches to sync")
}
secrets, err := garden.ReadGardenSecrets(f.k8sInformers, f.k8sGardenCoreInformers)
runtime.Must(err)
runtime.Must(garden.BootstrapCluster(k8sGardenClient, v1beta1constants.GardenNamespace, secrets))
logger.Logger.Info("Successfully bootstrapped the Garden cluster.")
// Initialize the workqueue metrics collection.
gardenmetrics.RegisterWorkqueMetrics()
var (
cloudProfileController = cloudprofilecontroller.NewCloudProfileController(f.clientMap, f.k8sGardenCoreInformers, f.recorder)
controllerRegistrationController = controllerregistrationcontroller.NewController(f.clientMap, f.k8sGardenCoreInformers, secrets)
csrController = csrcontroller.NewCSRController(f.clientMap, f.k8sInformers, f.recorder)
quotaController = quotacontroller.NewQuotaController(f.clientMap, f.k8sGardenCoreInformers, f.recorder)
plantController = plantcontroller.NewController(f.clientMap, f.k8sGardenCoreInformers, f.k8sInformers, f.cfg, f.recorder)
projectController = projectcontroller.NewProjectController(f.clientMap, f.k8sGardenCoreInformers, f.k8sInformers, f.cfg, f.recorder)
secretBindingController = secretbindingcontroller.NewSecretBindingController(f.clientMap, f.k8sGardenCoreInformers, f.k8sInformers, f.recorder)
seedController = seedcontroller.NewSeedController(f.clientMap, f.k8sGardenCoreInformers, f.k8sInformers, f.cfg, f.recorder)
shootController = shootcontroller.NewShootController(f.clientMap, f.k8sGardenCoreInformers, f.k8sInformers, f.cfg, f.recorder)
)
// Initialize the Controller metrics collection.
gardenmetrics.RegisterControllerMetrics(
controllermanager.ControllerWorkerSum,
controllermanager.ScrapeFailures,
controllerRegistrationController,
cloudProfileController,
csrController,
quotaController,
plantController,
projectController,
secretBindingController,
seedController,
shootController,
)
go cloudProfileController.Run(ctx, f.cfg.Controllers.CloudProfile.ConcurrentSyncs)
go controllerRegistrationController.Run(ctx, f.cfg.Controllers.ControllerRegistration.ConcurrentSyncs)
go csrController.Run(ctx, 1)
go plantController.Run(ctx, f.cfg.Controllers.Plant.ConcurrentSyncs)
go projectController.Run(ctx, f.cfg.Controllers.Project.ConcurrentSyncs)
go quotaController.Run(ctx, f.cfg.Controllers.Quota.ConcurrentSyncs)
go secretBindingController.Run(ctx, f.cfg.Controllers.SecretBinding.ConcurrentSyncs)
go seedController.Run(ctx, f.cfg.Controllers.Seed.ConcurrentSyncs)
go shootController.Run(ctx, f.cfg.Controllers.ShootMaintenance.ConcurrentSyncs, f.cfg.Controllers.ShootQuota.ConcurrentSyncs, f.cfg.Controllers.ShootHibernation.ConcurrentSyncs)
logger.Logger.Infof("Gardener controller manager (version %s) initialized.", version.Get().GitVersion)
// Shutdown handling
<-ctx.Done()
logger.Logger.Infof("I have received a stop signal and will no longer watch resources.")
logger.Logger.Infof("Bye Bye!")
}