main.go

// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and IronCore contributors
// SPDX-License-Identifier: Apache-2.0

package main

import (
	"flag"
	"net/http"
	"net/http/pprof"
	"os"

	ethv1alpha2 "github.com/onmetal/meeting-operator/apis/etherpad/v1alpha2"
	jitsiv1beta1 "github.com/onmetal/meeting-operator/apis/jitsi/v1beta1"
	jasv1alpha1 "github.com/onmetal/meeting-operator/apis/jitsiautoscaler/v1alpha1"
	boardv1alpha1 "github.com/onmetal/meeting-operator/apis/whiteboard/v1alpha2"
	etherpadcontroller "github.com/onmetal/meeting-operator/internal/etherpad"
	"github.com/onmetal/meeting-operator/internal/jitsi/jibri"
	"github.com/onmetal/meeting-operator/internal/jitsi/jicofo"
	"github.com/onmetal/meeting-operator/internal/jitsi/jigasi"
	"github.com/onmetal/meeting-operator/internal/jitsi/jvb"
	"github.com/onmetal/meeting-operator/internal/jitsi/prosody"
	"github.com/onmetal/meeting-operator/internal/jitsi/web"
	jascontroller "github.com/onmetal/meeting-operator/internal/jitsiautoscaler"
	boardcontroller "github.com/onmetal/meeting-operator/internal/whiteboard"
	"k8s.io/apimachinery/pkg/runtime"
	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
	clientgoscheme "k8s.io/client-go/kubernetes/scheme"

	// to ensure that exec-entrypoint and run can make use of them.
	_ "k8s.io/client-go/plugin/pkg/client/auth"
	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"
)

var (
	scheme   = runtime.NewScheme()
	setupLog = ctrl.Log.WithName("setup")
)

func main() {
	addToScheme()

	var metricsAddr string
	var enableLeaderElection, profiling bool
	var probeAddr string
	flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "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.")
	flag.BoolVar(&profiling, "profiling", false, "Enabling this will activate profiling that will be listen on :8080")
	opts := zap.Options{
		Development: true,
	}
	opts.BindFlags(flag.CommandLine)
	flag.Parse()

	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))

	profHandlers := make(map[string]http.Handler)
	if profiling {
		profHandlers["debug/pprof"] = http.HandlerFunc(pprof.Index)
		profHandlers["debug/pprof/profile"] = http.HandlerFunc(pprof.Profile)
		setupLog.Info("profiling activated")
	}

	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
		Scheme: scheme,
		Metrics: metricsserver.Options{
			BindAddress:   metricsAddr,
			ExtraHandlers: profHandlers,
		},
		HealthProbeBindAddress: probeAddr,
		LeaderElection:         enableLeaderElection,
		LeaderElectionID:       "4642dc8b.meeting.ko",
	})
	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}
	createReconciles(mgr)
	addHandlers(mgr)

	setupLog.Info("starting manager")
	if err = mgr.Start(ctrl.SetupSignalHandler()); err != nil {
		setupLog.Error(err, "problem running manager")
		os.Exit(1)
	}
}

func addToScheme() {
	utilruntime.Must(clientgoscheme.AddToScheme(scheme))
	utilruntime.Must(jitsiv1beta1.AddToScheme(scheme))
	utilruntime.Must(ethv1alpha2.AddToScheme(scheme))
	utilruntime.Must(boardv1alpha1.AddToScheme(scheme))
	utilruntime.Must(jasv1alpha1.AddToScheme(scheme))
	//+kubebuilder:scaffold:scheme
}

func createReconciles(mgr ctrl.Manager) {
	var err error
	if err = (&web.Reconciler{
		Client: mgr.GetClient(),
		Log:    ctrl.Log.WithName("controllers").WithName("Web"),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "Web")
		os.Exit(1)
	}
	if err = (&prosody.Reconciler{
		Client: mgr.GetClient(),
		Log:    ctrl.Log.WithName("controllers").WithName("Prosody"),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "Prosody")
		os.Exit(1)
	}
	if err = (&jicofo.Reconciler{
		Client: mgr.GetClient(),
		Log:    ctrl.Log.WithName("controllers").WithName("Jicofo"),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "Jicofo")
		os.Exit(1)
	}
	if err = (&jigasi.Reconciler{
		Client: mgr.GetClient(),
		Log:    ctrl.Log.WithName("controllers").WithName("Jigasi"),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "Jigasi")
		os.Exit(1)
	}
	if err = (&jibri.Reconciler{
		Client: mgr.GetClient(),
		Log:    ctrl.Log.WithName("controllers").WithName("Jibri"),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "Jibri")
		os.Exit(1)
	}
	if err = (&jvb.Reconciler{
		Client: mgr.GetClient(),
		Log:    ctrl.Log.WithName("controllers").WithName("JVB"),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "JVB")
		os.Exit(1)
	}
	if err = (&etherpadcontroller.Reconcile{
		Client: mgr.GetClient(),
		Log:    ctrl.Log.WithName("controllers").WithName("Etherpad"),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "Etherpad")
		os.Exit(1)
	}
	if err = (&boardcontroller.Reconciler{
		Client: mgr.GetClient(),
		Log:    ctrl.Log.WithName("controllers").WithName("WhiteBoard"),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "WhiteBoard")
		os.Exit(1)
	}
	if err = (&jascontroller.Reconciler{
		Client: mgr.GetClient(),
		Log:    ctrl.Log.WithName("controllers").WithName("AutoScaler"),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "AutoScaler")
		os.Exit(1)
	}
	//+kubebuilder:scaffold:builder
}

func addHandlers(mgr ctrl.Manager) {
	if healthErr := mgr.AddHealthzCheck("healthz", healthz.Ping); healthErr != nil {
		setupLog.Error(healthErr, "unable to set up health check")
		os.Exit(1)
	}
	if readyErr := mgr.AddReadyzCheck("readyz", healthz.Ping); readyErr != nil {
		setupLog.Error(readyErr, "unable to set up ready check")
		os.Exit(1)
	}
}