main.go

// Copyright (C) 2021, Oracle and/or its affiliates.
// Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.

package main

import (
	"flag"
	"os"
	"strconv"

	imagesv1alpha1 "github.com/verrazzano/verrazzano/image-patch-operator/api/images/v1alpha1"
	"github.com/verrazzano/verrazzano/image-patch-operator/controllers"
	"github.com/verrazzano/verrazzano/pkg/log"
	"go.uber.org/zap"
	batchv1 "k8s.io/api/batch/v1"
	"k8s.io/apimachinery/pkg/runtime"
	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
	_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/handler"
	kzap "sigs.k8s.io/controller-runtime/pkg/log/zap"
	"sigs.k8s.io/controller-runtime/pkg/source"
	//+kubebuilder:scaffold:imports
)

var (
	scheme = runtime.NewScheme()
)

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

	utilruntime.Must(imagesv1alpha1.AddToScheme(scheme))
	//+kubebuilder:scaffold:scheme
}

func main() {
	var metricsAddr string
	var enableLeaderElection bool
	flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
	flag.BoolVar(&enableLeaderElection, "enable-leader-election", false,
		"Enable leader election for controller manager. "+
			"Enabling this will ensure there is only one active controller manager.")

	// Add the zap logger flag set to the CLI.
	opts := kzap.Options{}
	opts.BindFlags(flag.CommandLine)

	flag.Parse()
	kzap.UseFlagOptions(&opts)
	log.InitLogs(opts)

	setupLog := zap.S()

	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
		Scheme:             scheme,
		MetricsBindAddress: metricsAddr,
		Port:               9443,
		LeaderElection:     enableLeaderElection,
		LeaderElectionID:   "270cac09.verrazzano.io",
	})
	if err != nil {
		setupLog.Errorf("unable to start manager: #{err}", "unable to start manager")
		os.Exit(1)
	}

	// Setup the reconciler
	// If dryRun is set to true, then the image job will print the Dockerfile to stdout instead of building the image
	dryRun, _ := strconv.ParseBool(os.Getenv("IBR_DRY_RUN"))
	reconciler := controllers.ImageBuildRequestReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
		DryRun: dryRun,
	}
	if err = reconciler.SetupWithManager(mgr); err != nil {
		setupLog.Errorf("unable to create controller: %v", err)
		os.Exit(1)
	}

	// Watch for the secondary resource (Job).
	if err := reconciler.Controller.Watch(&source.Kind{Type: &batchv1.Job{}},
		&handler.EnqueueRequestForOwner{OwnerType: &imagesv1alpha1.ImageBuildRequest{}, IsController: true}); err != nil {
		setupLog.Errorf("unable to set watch for Job resource: %v", err)
		os.Exit(1)
	}

	//+kubebuilder:scaffold:builder

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