main.go

/*
 * Copyright (c) 2021-2022.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0.
 *
 * If a copy of the MPL was not distributed with
 * this file, You can obtain one at
 *
 *   http://mozilla.org/MPL/2.0/
 */

package main

import (
	"flag"
	"io"
	"os"

	"github.com/artilleryio/artillery-operator/internal/telemetry"
	"github.com/go-logr/logr"
	// 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"

	loadtestv1alpha1 "github.com/artilleryio/artillery-operator/api/v1alpha1"
	"github.com/artilleryio/artillery-operator/controllers"
	// +kubebuilder:scaffold:imports
)

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

func init() {
	utilruntime.Must(clientgoscheme.AddToScheme(scheme))

	utilruntime.Must(loadtestv1alpha1.AddToScheme(scheme))
	// +kubebuilder:scaffold:scheme
}

func doClose(closer io.Closer, msg string, logger logr.Logger) {
	if err := closer.Close(); err != nil {
		logger.Error(err, msg)
	}
}

func main() {
	var metricsAddr string
	var enableLeaderElection 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.")
	opts := zap.Options{
		Development: true,
	}
	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,
		Port:                   9443,
		HealthProbeBindAddress: probeAddr,
		LeaderElection:         enableLeaderElection,
		LeaderElectionID:       "84f84c74.artillery.io",
	})
	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}

	reconciler := &controllers.LoadTestReconciler{
		Client:   mgr.GetClient(),
		Scheme:   mgr.GetScheme(),
		Recorder: mgr.GetEventRecorderFor("loadtest-controller"),
	}

	telemetryConfig := telemetry.NewConfig(controllers.AppName, controllers.Version, controllers.WorkerImage, setupLog)
	telemetryClient, err := telemetry.NewClient(telemetryConfig)
	if err != nil {
		setupLog.Error(err, "unable to create telemetry client")
		os.Exit(1)
	}
	defer doClose(telemetryClient, "could not close Posthog telemetry client", setupLog)

	reconciler.TelemetryConfig = telemetryConfig
	reconciler.TelemetryClient = telemetryClient

	setupLog.Info("Telemetry config", "disable", telemetryConfig.Disable, "debug", telemetryConfig.Debug)

	if err = reconciler.SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "LoadTest")
		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")
	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
		setupLog.Error(err, "problem running manager")
		os.Exit(1)
	}
}