main.go

/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package main

import (
	"flag"
	"os"

	_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/cache"
	"sigs.k8s.io/controller-runtime/pkg/log/zap"
	"sigs.k8s.io/controller-runtime/pkg/metrics/server"

	"github.com/keikoproj/addon-manager/api/addon"
	"github.com/keikoproj/addon-manager/controllers"
	"github.com/keikoproj/addon-manager/pkg/common"
	"github.com/keikoproj/addon-manager/pkg/version"
	// +kubebuilder:scaffold:imports
)

var (
	setupLog             = ctrl.Log.WithName("setup")
	debug                bool
	metricsAddr          string
	enableLeaderElection bool
)

func init() {
	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.")
	flag.BoolVar(&debug, "debug", false, "Debug logging")
	flag.Parse()
}

func main() {
	ctrl.SetLogger(zap.New(zap.UseDevMode(debug)))

	setupLog.Info(version.ToString())
	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
		Scheme: common.GetAddonMgrScheme(),
		Metrics: server.Options{
			BindAddress: metricsAddr,
		},
		LeaderElection:   enableLeaderElection,
		LeaderElectionID: "addonmgr.keikoproj.io",
		Cache: cache.Options{
			DefaultNamespaces: map[string]cache.Config{
				addon.ManagedNameSpace: {},
			},
		},
	})
	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}

	err = controllers.New(mgr)
	if err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "Addon")
		os.Exit(1)
	}

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