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main.go
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main.go
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package main
import (
"flag"
"github.com/rodbate/istio-external-service-operator/pkg/healthcheck"
"go.uber.org/zap/zapcore"
"os"
// 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/client-go/plugin/pkg/client/auth"
"k8s.io/apimachinery/pkg/runtime"
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"
istioexternalapiv1 "github.com/rodbate/istio-external-service-operator/api/v1"
"github.com/rodbate/istio-external-service-operator/controllers"
istionetworkingapisv1beta1 "istio.io/client-go/pkg/apis/networking/v1beta1"
//+kubebuilder:scaffold:imports
)
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
func init() {
utilruntime.Must(clientgoscheme.AddToScheme(scheme))
utilruntime.Must(istioexternalapiv1.AddToScheme(scheme))
utilruntime.Must(istionetworkingapisv1beta1.AddToScheme(scheme))
//+kubebuilder:scaffold:scheme
}
func main() {
var metricsAddr string
var enableLeaderElection bool
var probeAddr string
flag.StringVar(&metricsAddr, "metrics-bind-address", ":0", "The address the metric endpoint binds to.")
flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
flag.BoolVar(&enableLeaderElection, "leader-elect", false,
"Enable leader election for controller manager. "+
"Enabling this will ensure there is only one active controller manager.")
opts := zap.Options{
Development: true,
TimeEncoder: zapcore.ISO8601TimeEncoder,
}
opts.BindFlags(flag.CommandLine)
flag.Parse()
ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme,
MetricsBindAddress: metricsAddr,
HealthProbeBindAddress: probeAddr,
LeaderElection: enableLeaderElection,
LeaderElectionID: "istio-external-service-operator.istio.rodbate.github.com",
})
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
if err = (&controllers.IstioExternalServiceReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "IstioExternalService")
os.Exit(1)
}
//+kubebuilder:scaffold:builder
if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
setupLog.Error(err, "unable to set up health check")
os.Exit(1)
}
if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
setupLog.Error(err, "unable to set up ready check")
os.Exit(1)
}
setupLog.Info("starting manager")
signalCtx := ctrl.SetupSignalHandler()
if err := mgr.Start(signalCtx); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
stopCh := make(chan struct{})
go func() {
<-signalCtx.Done()
setupLog.Info("Main Service Stopping ... ")
healthcheck.Destroy()
setupLog.Info("Main Service Stopped ...")
stopCh <- struct{}{}
}()
<-stopCh
}