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controller.go
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controller.go
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// Copyright Red Hat
package installer
import (
"errors"
"os"
"k8s.io/apimachinery/pkg/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
"k8s.io/klog/v2"
ctrl "sigs.k8s.io/controller-runtime"
// "k8s.io/client-go/rest"
singaporev1alpha1 "github.com/stolostron/compute-operator/api/singapore/v1alpha1"
apiextensionsclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
// "sigs.k8s.io/controller-runtime/pkg/cache"
"sigs.k8s.io/controller-runtime/pkg/healthz"
// "sigs.k8s.io/controller-runtime/pkg/kcp"
"github.com/spf13/cobra"
// +kubebuilder:scaffold:imports
)
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
type installerOptions struct {
metricsAddr string
probeAddr string
enableLeaderElection bool
}
func init() {
_ = clientgoscheme.AddToScheme(scheme)
_ = singaporev1alpha1.AddToScheme(scheme)
// +kubebuilder:scaffold:scheme
}
func NewInstaller() *cobra.Command {
o := &installerOptions{}
cmd := &cobra.Command{
Use: "installer",
Short: "installer for compute-operator",
Run: func(cmd *cobra.Command, args []string) {
o.run()
os.Exit(1)
},
}
cmd.Flags().StringVar(&o.metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
cmd.Flags().StringVar(&o.probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
cmd.Flags().BoolVar(&o.enableLeaderElection, "enable-leader-election", false,
"Enable leader election for controller manager. "+
"Enabling this will ensure there is only one active controller manager.")
return cmd
}
func (o *installerOptions) run() {
// ctrl.SetLogger(zap.New(zap.UseDevMode(true)))
ctrl.SetLogger(klog.NewKlogr())
setupLog.Info("Setup Installer")
opts := ctrl.Options{
Scheme: scheme,
MetricsBindAddress: o.metricsAddr,
Port: 9443,
HealthProbeBindAddress: o.probeAddr,
LeaderElection: o.enableLeaderElection,
LeaderElectionID: "installer.open-cluster-management.io",
}
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), opts)
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
setupLog.Info("Add Installer reconciler")
controllerNamespace := os.Getenv("POD_NAMESPACE")
if len(controllerNamespace) == 0 {
setupLog.Error(errors.New("POD_NAMESPACE not set"), "missing required environment variable")
os.Exit(1)
}
controllerImage := os.Getenv("CONTROLLER_IMAGE")
if len(controllerImage) == 0 {
setupLog.Error(errors.New("CONTROLLER_IMAGE not set"), "missing required environment variable")
os.Exit(1)
}
if err = (&ClusterRegistrarReconciler{
Client: mgr.GetClient(),
KubeClient: kubernetes.NewForConfigOrDie(ctrl.GetConfigOrDie()),
DynamicClient: dynamic.NewForConfigOrDie(ctrl.GetConfigOrDie()),
APIExtensionClient: apiextensionsclient.NewForConfigOrDie(ctrl.GetConfigOrDie()),
Log: ctrl.Log.WithName("controllers").WithName("Installer"),
Scheme: mgr.GetScheme(),
ControllerNamespace: controllerNamespace,
ControllerImage: controllerImage,
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "Installer")
os.Exit(1)
}
// add healthz/readyz check handler
setupLog.Info("Add health check")
if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
setupLog.Error(err, "unable to add healthz check handler ")
os.Exit(1)
}
setupLog.Info("Add ready check")
if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
setupLog.Error(err, "unable to add readyz check handler ")
os.Exit(1)
}
// +kubebuilder:scaffold:builder
setupLog.Info("Starting manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}