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main.go
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main.go
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/*
Copyright (c) Microsoft Corporation.
Licensed under the MIT license.
*/
// Binary hub-net-controller-manager watches fleet-networking CRDs in the hub cluster to export/import multi-cluster
// services.
package main
import (
"flag"
"os"
"time"
// Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.)
// to ensure that exec-entrypoint and run can make use of them.
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/rand"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth"
"k8s.io/klog/v2"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/healthz"
metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
"sigs.k8s.io/controller-runtime/pkg/webhook"
//+kubebuilder:scaffold:imports
fleetnetv1alpha1 "go.goms.io/fleet-networking/api/v1alpha1"
"go.goms.io/fleet-networking/pkg/controllers/hub/endpointsliceexport"
"go.goms.io/fleet-networking/pkg/controllers/hub/internalserviceexport"
"go.goms.io/fleet-networking/pkg/controllers/hub/internalserviceimport"
"go.goms.io/fleet-networking/pkg/controllers/hub/serviceimport"
)
var (
scheme = runtime.NewScheme()
metricsAddr = flag.String("metrics-bind-address", ":8080", "The address the metric endpoint binds to.")
probeAddr = flag.String("health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
enableLeaderElection = flag.Bool("leader-elect", true,
"Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager.")
leaderElectionNamespace = flag.String("leader-election-namespace", "fleet-system", "The namespace in which the leader election resource will be created.")
internalServiceExportRetryInterval = flag.Duration("internalserviceexport-retry-interval", 2*time.Second,
"The wait time for the internalserviceexport controller to requeue the request and to wait for the"+
"ServiceImport controller to resolve the service Spec")
)
func init() {
utilruntime.Must(clientgoscheme.AddToScheme(scheme))
utilruntime.Must(fleetnetv1alpha1.AddToScheme(scheme))
klog.InitFlags(nil)
//+kubebuilder:scaffold:scheme
}
func main() {
flag.Parse()
rand.Seed(time.Now().UnixNano())
handleExitFunc := func() {
klog.Flush()
}
exitWithErrorFunc := func() {
handleExitFunc()
os.Exit(1)
}
defer handleExitFunc()
flag.VisitAll(func(f *flag.Flag) {
klog.InfoS("flag:", "name", f.Name, "value", f.Value)
})
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme,
Metrics: metricsserver.Options{
BindAddress: *metricsAddr,
},
WebhookServer: webhook.NewServer(webhook.Options{
Port: 9443,
}),
HealthProbeBindAddress: *probeAddr,
LeaderElection: *enableLeaderElection,
LeaderElectionNamespace: *leaderElectionNamespace,
LeaderElectionID: "2bf2b407.hub.networking.fleet.azure.com",
})
if err != nil {
klog.ErrorS(err, "Unable to start manager")
exitWithErrorFunc()
}
//+kubebuilder:scaffold:builder
if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
klog.ErrorS(err, "Unable to set up health check")
exitWithErrorFunc()
}
if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
klog.ErrorS(err, "Unable to set up ready check")
exitWithErrorFunc()
}
ctx := ctrl.SetupSignalHandler()
klog.V(1).InfoS("Start to setup EndpointsliceExport controller")
if err := (&endpointsliceexport.Reconciler{
HubClient: mgr.GetClient(),
}).SetupWithManager(ctx, mgr); err != nil {
klog.ErrorS(err, "Unable to create EndpointsliceExport controller")
exitWithErrorFunc()
}
klog.V(1).InfoS("Start to setup InternalServiceExport controller")
if err := (&internalserviceexport.Reconciler{
Client: mgr.GetClient(),
RetryInternal: *internalServiceExportRetryInterval,
}).SetupWithManager(mgr); err != nil {
klog.ErrorS(err, "Unable to create InternalServiceExport controller")
exitWithErrorFunc()
}
klog.V(1).InfoS("Start to setup InternalServiceImport controller")
if err := (&internalserviceimport.Reconciler{
HubClient: mgr.GetClient(),
}).SetupWithManager(ctx, mgr); err != nil {
klog.ErrorS(err, "Unable to create InternalServiceImport controller")
exitWithErrorFunc()
}
klog.V(1).InfoS("Start to setup ServiceImport controller")
if err := (&serviceimport.Reconciler{
Client: mgr.GetClient(),
Recorder: mgr.GetEventRecorderFor(serviceimport.ControllerName),
}).SetupWithManager(ctx, mgr); err != nil {
klog.ErrorS(err, "Unable to create ServiceImport controller")
exitWithErrorFunc()
}
klog.V(1).InfoS("Starting ServiceExportImport controller manager")
if err := mgr.Start(ctx); err != nil {
klog.ErrorS(err, "Problem running manager")
exitWithErrorFunc()
}
}