main.go

package main

import (
	goflag "flag"
	"fmt"
	"math/rand"
	"os"
	"time"

	"k8s.io/apimachinery/pkg/util/wait"
	cloudprovider "k8s.io/cloud-provider"
	"k8s.io/cloud-provider/app"
	cloudcontrollerconfig "k8s.io/cloud-provider/app/config"
	"k8s.io/cloud-provider/options"
	cliflag "k8s.io/component-base/cli/flag"
	"k8s.io/component-base/logs"
	_ "k8s.io/component-base/metrics/prometheus/clientgo" // for client metric registration
	_ "k8s.io/component-base/metrics/prometheus/version"  // for version metric registration
	"k8s.io/klog/v2"

	"github.com/phoenixnap/k8s-cloud-provider-bmc/phoenixnap"
	"github.com/spf13/pflag"
)

func main() {
	rand.Seed(time.Now().UTC().UnixNano())

	opts, err := options.NewCloudControllerManagerOptions()
	opts.KubeCloudShared.CloudProvider.Name = phoenixnap.ProviderName

	if err != nil {
		klog.Fatalf("unable to initialize command options: %v", err)
	}
	controllerInitializers := app.DefaultInitFuncConstructors
	// remove unneeded controllers
	delete(controllerInitializers, "route")
	fss := cliflag.NamedFlagSets{
		NormalizeNameFunc: cliflag.WordSepNormalizeFunc,
	}
	pflag.CommandLine.SetNormalizeFunc(cliflag.WordSepNormalizeFunc)
	pflag.CommandLine.AddGoFlagSet(goflag.CommandLine)

	command := app.NewCloudControllerManagerCommand(opts, cloudInitializer, controllerInitializers, fss, wait.NeverStop)

	logs.InitLogs()
	defer logs.FlushLogs()

	if err := command.Execute(); err != nil {
		fmt.Fprintf(os.Stderr, "error: %v\n", err)
		os.Exit(1)
	}
}

func cloudInitializer(config *cloudcontrollerconfig.CompletedConfig) cloudprovider.Interface {
	cloudConfig := config.ComponentConfig.KubeCloudShared.CloudProvider
	// initialize cloud provider with the cloud provider name and config file provided
	cloud, err := cloudprovider.InitCloudProvider(cloudConfig.Name, cloudConfig.CloudConfigFile)

	if err != nil {
		klog.Fatalf("Cloud provider could not be initialized: %v", err)

	}
	if cloud == nil {
		klog.Fatalf("Cloud provider is nil")
	}

	if !cloud.HasClusterID() {
		if config.ComponentConfig.KubeCloudShared.AllowUntaggedCloud {
			klog.Warning("detected a cluster without a ClusterID.  A ClusterID will be required in the future.  Please tag your cluster to avoid any future issues")
		} else {
			klog.Fatalf("no ClusterID found.  A ClusterID is required for the cloud provider to function properly.  This check can be bypassed by setting the allow-untagged-cloud option")
		}
	}

	return cloud
}