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leader.go
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leader.go
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// Copyright 2021 Antrea 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 main
import (
"fmt"
"github.com/spf13/cobra"
"k8s.io/klog/v2"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/webhook"
multiclusterv1alpha1 "antrea.io/antrea/multicluster/apis/multicluster/v1alpha1"
"antrea.io/antrea/multicluster/controllers/multicluster/leader"
"antrea.io/antrea/pkg/log"
"antrea.io/antrea/pkg/signals"
"antrea.io/antrea/pkg/util/env"
)
func newLeaderCommand() *cobra.Command {
var leaderCmd = &cobra.Command{
Use: "leader",
Short: "Run the MC controller in leader cluster",
Long: "Run the Antrea Multi-Cluster controller for leader cluster",
Run: func(cmd *cobra.Command, args []string) {
log.InitLogs(cmd.Flags())
defer log.FlushLogs()
if err := opts.complete(args); err != nil {
klog.Fatalf("Failed to complete: %v", err)
}
if err := runLeader(opts); err != nil {
klog.Fatalf("Error running controller: %v", err)
}
},
}
return leaderCmd
}
func runLeader(o *Options) error {
// on the leader we want the reconciler to run for a given Namespace instead of cluster scope
podNamespace := env.GetPodNamespace()
o.options.Namespace = podNamespace
stopCh := signals.RegisterSignalHandlers()
mgr, err := setupManagerAndCertControllerFunc(true, o)
if err != nil {
return err
}
mgrClient := mgr.GetClient()
mgrScheme := mgr.GetScheme()
memberClusterStatusManager := leader.NewMemberClusterAnnounceReconciler(
mgrClient, mgrScheme)
if err = memberClusterStatusManager.SetupWithManager(mgr); err != nil {
return fmt.Errorf("error creating MemberClusterAnnounce controller: %v", err)
}
noCachedClient, err := client.New(mgr.GetConfig(), client.Options{Scheme: mgrScheme, Mapper: mgr.GetRESTMapper()})
if err != nil {
return err
}
hookServer := mgr.GetWebhookServer()
hookServer.Register("/validate-multicluster-crd-antrea-io-v1alpha1-memberclusterannounce",
&webhook.Admission{Handler: &memberClusterAnnounceValidator{
Client: noCachedClient,
namespace: podNamespace}})
hookServer.Register("/validate-multicluster-crd-antrea-io-v1alpha2-clusterset",
&webhook.Admission{Handler: &clusterSetValidator{
Client: mgr.GetClient(),
namespace: env.GetPodNamespace(),
role: leaderRole},
})
clusterSetReconciler := &leader.LeaderClusterSetReconciler{
Client: mgrClient,
Scheme: mgrScheme,
StatusManager: memberClusterStatusManager,
ClusterCalimCRDAvailable: o.ClusterCalimCRDAvailable,
}
if err = clusterSetReconciler.SetupWithManager(mgr); err != nil {
return fmt.Errorf("error creating ClusterSet controller: %v", err)
}
resExportReconciler := &leader.ResourceExportReconciler{
Client: mgrClient,
Scheme: mgrScheme}
if err = resExportReconciler.SetupWithManager(mgr); err != nil {
return fmt.Errorf("error creating ResourceExport controller: %v", err)
}
if o.EnableStretchedNetworkPolicy {
labelExportReconciler := leader.NewLabelIdentityExportReconciler(
mgrClient,
mgrScheme,
podNamespace)
if err = labelExportReconciler.SetupWithManager(mgr); err != nil {
return fmt.Errorf("error creating LabelIdentityExport controller: %v", err)
}
go labelExportReconciler.Run(stopCh)
}
if err = (&multiclusterv1alpha1.ResourceExport{}).SetupWebhookWithManager(mgr); err != nil {
return fmt.Errorf("error creating ResourceExport webhook: %v", err)
}
staleController := leader.NewStaleResCleanupController(
mgr.GetClient(),
mgr.GetScheme(),
)
if err = staleController.SetupWithManager(mgr); err != nil {
return fmt.Errorf("error creating StaleResCleanupController: %v", err)
}
go staleController.Run(stopCh)
klog.InfoS("Leader MC Controller Starting Manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
return fmt.Errorf("error running Manager: %v", err)
}
return nil
}