/
run.go
159 lines (140 loc) · 4.85 KB
/
run.go
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package cmd
import (
"context"
"fmt"
"net"
"time"
"github.com/container-storage-interface/spec/lib/go/csi"
"github.com/topolvm/topolvm"
topolvmlegacyv1 "github.com/topolvm/topolvm/api/legacy/v1"
topolvmv1 "github.com/topolvm/topolvm/api/v1"
clientwrapper "github.com/topolvm/topolvm/client"
"github.com/topolvm/topolvm/controllers"
"github.com/topolvm/topolvm/driver"
"github.com/topolvm/topolvm/hook"
"github.com/topolvm/topolvm/runners"
"google.golang.org/grpc"
storagev1 "k8s.io/api/storage/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/healthz"
"sigs.k8s.io/controller-runtime/pkg/log/zap"
metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
"sigs.k8s.io/controller-runtime/pkg/webhook"
"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
//+kubebuilder:scaffold:imports
)
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
func init() {
utilruntime.Must(clientgoscheme.AddToScheme(scheme))
utilruntime.Must(topolvmv1.AddToScheme(scheme))
utilruntime.Must(topolvmlegacyv1.AddToScheme(scheme))
//+kubebuilder:scaffold:scheme
}
//+kubebuilder:rbac:groups=storage.k8s.io,resources=csidrivers,verbs=get;list;watch
// Run builds and starts the manager with leader election.
func subMain() error {
ctrl.SetLogger(zap.New(zap.UseFlagOptions(&config.zapOpts)))
cfg, err := ctrl.GetConfig()
if err != nil {
return err
}
hookHost, portStr, err := net.SplitHostPort(config.webhookAddr)
if err != nil {
return fmt.Errorf("invalid webhook addr: %v", err)
}
hookPort, err := net.LookupPort("tcp", portStr)
if err != nil {
return fmt.Errorf("invalid webhook port: %v", err)
}
mgr, err := ctrl.NewManager(cfg, ctrl.Options{
Scheme: scheme,
Metrics: metricsserver.Options{
BindAddress: config.metricsAddr,
},
HealthProbeBindAddress: config.healthAddr,
LeaderElection: config.leaderElection,
LeaderElectionID: config.leaderElectionID,
LeaderElectionNamespace: config.leaderElectionNamespace,
RenewDeadline: &config.leaderElectionRenewDeadline,
RetryPeriod: &config.leaderElectionRetryPeriod,
LeaseDuration: &config.leaderElectionLeaseDuration,
WebhookServer: webhook.NewServer(webhook.Options{
Host: hookHost,
Port: hookPort,
CertDir: config.certDir,
}),
})
if err != nil {
return err
}
client := clientwrapper.NewWrappedClient(mgr.GetClient())
apiReader := clientwrapper.NewWrappedReader(mgr.GetAPIReader(), mgr.GetClient().Scheme())
if config.enableWebhooks {
// register webhook handlers
// admission.NewDecoder never returns non-nil error
dec := admission.NewDecoder(scheme)
wh := mgr.GetWebhookServer()
wh.Register("/pod/mutate", hook.PodMutator(client, apiReader, dec))
wh.Register("/pvc/mutate", hook.PVCMutator(client, apiReader, dec))
if err := mgr.AddReadyzCheck("webhook", wh.StartedChecker()); err != nil {
return err
}
}
// register controllers
nodecontroller := controllers.NewNodeReconciler(client, config.skipNodeFinalize)
if err := nodecontroller.SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "Node")
return err
}
pvccontroller := controllers.NewPersistentVolumeClaimReconciler(client, apiReader)
if err := pvccontroller.SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "PersistentVolumeClaim")
return err
}
//+kubebuilder:scaffold:builder
// Add health checker to manager
ctx := context.Background()
check := func() error {
ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
defer cancel()
var drv storagev1.CSIDriver
return apiReader.Get(ctx, types.NamespacedName{Name: topolvm.GetPluginName()}, &drv)
}
checker := runners.NewChecker(check, 1*time.Minute)
if err := mgr.Add(checker); err != nil {
return err
}
// Add gRPC server to manager.
grpcServer := grpc.NewServer()
csi.RegisterIdentityServer(grpcServer, driver.NewIdentityServer(checker.Ready))
controllerSever, err := driver.NewControllerServer(mgr)
if err != nil {
return err
}
csi.RegisterControllerServer(grpcServer, controllerSever)
// gRPC service itself should run even when the manager is *not* a leader
// because CSI sidecar containers choose a leader.
err = mgr.Add(runners.NewGRPCRunner(grpcServer, config.csiSocket, false))
if err != nil {
return err
}
if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
return err
}
if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
return err
}
setupLog.Info("starting manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
setupLog.Error(err, "problem running manager")
return err
}
return nil
}