cloudfoundry/korifi

package main
 
import (
    "flag"
    "fmt"
    "os"
 
    korifiv1alpha1 "code.cloudfoundry.org/korifi/controllers/api/v1alpha1"
    "code.cloudfoundry.org/korifi/kpack-image-builder/controllers"
    "code.cloudfoundry.org/korifi/kpack-image-builder/controllers/config"
    kpackimagebuilderfinalizer "code.cloudfoundry.org/korifi/kpack-image-builder/controllers/webhooks/finalizer"
    "code.cloudfoundry.org/korifi/tools"
    "code.cloudfoundry.org/korifi/tools/image"
    "code.cloudfoundry.org/korifi/tools/registry"
    "code.cloudfoundry.org/korifi/version"
    buildv1alpha2 "github.com/pivotal/kpack/pkg/apis/build/v1alpha2"
    "go.uber.org/zap/zapcore"
    utilruntime "k8s.io/apimachinery/pkg/util/runtime"
    k8sclient "k8s.io/client-go/kubernetes"
    clientgoscheme "k8s.io/client-go/kubernetes/scheme"
    "k8s.io/client-go/rest"
    "k8s.io/klog/v2"
    ctrl "sigs.k8s.io/controller-runtime"
    "sigs.k8s.io/controller-runtime/pkg/healthz"
    "sigs.k8s.io/controller-runtime/pkg/manager"
    metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
    "sigs.k8s.io/controller-runtime/pkg/webhook"
 
    "k8s.io/apimachinery/pkg/runtime"
)
 
var (
    scheme   = runtime.NewScheme()
    setupLog = ctrl.Log.WithName("setup")
)
 
func init() {
    utilruntime.Must(clientgoscheme.AddToScheme(scheme))
    utilruntime.Must(korifiv1alpha1.AddToScheme(scheme))
    utilruntime.Must(buildv1alpha2.AddToScheme(scheme))
}
 
Function `main` has 51 lines of code (exceeds 50 allowed). Consider refactoring.
func main() {
    var (
        metricsAddr          string
        enableLeaderElection bool
        probeAddr            string
        configPath           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.StringVar(&configPath, "config", "", "")
    flag.BoolVar(&enableLeaderElection, "leader-elect", false,
        "Enable leader election for controller manager. "+
            "Enabling this will ensure there is only one active controller manager.")
    flag.Parse()
 
    logger, _, err := tools.NewZapLogger(zapcore.InfoLevel)
    if err != nil {
        setupLog.Error(err, "unable to set up zap logger")
        os.Exit(1)
    }
 
    ctrl.SetLogger(logger)
    klog.SetLogger(ctrl.Log)
 
    ctrl.Log.Info("starting Korifi kpack image builder", "version", version.Version)
 
    conf := ctrl.GetConfigOrDie()
    mgr, err := ctrl.NewManager(conf, ctrl.Options{
        Scheme: scheme,
        WebhookServer: webhook.NewServer(webhook.Options{
            Port: 9443,
        }),
        Metrics: metricsserver.Options{
            BindAddress: metricsAddr,
        },
        HealthProbeBindAddress: probeAddr,
        LeaderElection:         enableLeaderElection,
        LeaderElectionID:       "13w500bs.cloudfoundry.org",
    })
    if err != nil {
        setupLog.Error(err, "unable to initialize manager")
        os.Exit(1)
    }
 
    if err = setupControllers(mgr, conf, configPath); err != nil {
        setupLog.Error(err, "unable to set up controllers")
        os.Exit(1)
    }
 
    if err = setupWebhooks(mgr); err != nil {
        setupLog.Error(err, "unable to set up webhooks")
        os.Exit(1)
    }
 
    setupLog.Info("starting manager")
    if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
        setupLog.Error(err, "problem running manager")
        os.Exit(1)
    }
}
 
func setupControllers(mgr manager.Manager, restConf *rest.Config, configPath string) error {
    controllersLog := ctrl.Log.WithName("controllers")
    imageClientSet, err := k8sclient.NewForConfig(restConf)
    if err != nil {
        return fmt.Errorf("could not create k8s client: %v", err)
    }
 
    controllerConfig := &config.Config{}
    err = tools.LoadConfigInto(controllerConfig, configPath)
    if err != nil {
        return fmt.Errorf("config could not be read: %v", err)
    }
 
    imageClient := image.NewClient(imageClientSet)
    if err = controllers.NewBuildWorkloadReconciler(
        mgr.GetClient(),
        mgr.GetScheme(),
        controllersLog,
        controllerConfig,
        imageClient,
        registry.NewRepositoryCreator(controllerConfig.ContainerRegistryType),
    ).SetupWithManager(mgr); err != nil {
        return fmt.Errorf("unable to create BuildWorkload controller: %v", err)
    }
 
    if err = controllers.NewBuilderInfoReconciler(
        mgr.GetClient(),
        mgr.GetScheme(),
        controllersLog,
        controllerConfig.ClusterBuilderName,
        controllerConfig.CFRootNamespace,
    ).SetupWithManager(mgr); err != nil {
        return fmt.Errorf("unable to create BuilderInfo controller: %v", err)
    }
 
    if err = controllers.NewKpackBuildController(
        mgr.GetClient(),
        controllersLog,
        imageClient,
        controllerConfig.BuilderServiceAccount,
    ).SetupWithManager(mgr); err != nil {
        return fmt.Errorf("unable to create KpackBuild controller: %v", err)
    }
 
    return nil
}
 
func setupWebhooks(mgr manager.Manager) error {
    kpackimagebuilderfinalizer.NewKpackImageBuilderFinalizerWebhook().SetupWebhookWithManager(mgr)
 
    if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
        return fmt.Errorf("unable to set up health check: %v", err)
    }
 
    if err := mgr.AddReadyzCheck("readyz", mgr.GetWebhookServer().StartedChecker()); err != nil {
        return fmt.Errorf("unable to set up ready check: %v", err)
    }
 
    return nil
}