/
controller.go
87 lines (72 loc) · 2.71 KB
/
controller.go
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package cmd
import (
"fmt"
"github.com/marcosQuesada/swarm/internal/k8/operator"
"github.com/marcosQuesada/swarm/pkg/apis/swarm/v1alpha1"
clientset "github.com/marcosQuesada/swarm/pkg/generated/clientset/versioned"
informers "github.com/marcosQuesada/swarm/pkg/generated/informers/externalversions"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"k8s.io/apimachinery/pkg/util/wait"
kubeinformers "k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/kubernetes/scheme"
"k8s.io/client-go/tools/clientcmd"
"k8s.io/klog/v2"
"os"
"os/signal"
"syscall"
"time"
)
// controllerCmd represents the controller command
var controllerCmd = &cobra.Command{
Use: "controller",
Short: "A brief description of your command",
Long: `A longer description that spans multiple lines and likely contains examples
and usage of using your command. For example:
Cobra is a CLI library for Go that empowers applications.
This application is a tool to generate the needed files
to quickly create a Cobra application.`,
Run: func(cmd *cobra.Command, args []string) {
fmt.Println("controller called")
err := v1alpha1.AddToScheme(scheme.Scheme)
if err != nil {
log.Fatalf("unable to add type to scheme %v", err)
}
kubeConfigPath := os.Getenv("HOME") + "/.kube/config"
cfg, err := clientcmd.BuildConfigFromFlags("", kubeConfigPath)
if err != nil {
log.Fatalf("getClusterConfig: %v", err)
}
swarmClient, err := clientset.NewForConfig(cfg)
if err != nil {
log.Fatalf("clientset creation fatal: %v", err)
}
kubeClient, err := kubernetes.NewForConfig(cfg)
if err != nil {
klog.Fatalf("Error building kubernetes clientset: %s", err.Error())
}
kubeInformerFactory := kubeinformers.NewSharedInformerFactory(kubeClient, time.Minute*10)
swarmInformerFactory := informers.NewSharedInformerFactory(swarmClient, time.Minute*10)
podInformer := kubeInformerFactory.Core().V1().Pods()
swarmInformer := swarmInformerFactory.K8slab().V1alpha1().Swarms()
controller := operator.NewController(kubeClient, swarmClient, podInformer, swarmInformer)
// notice that there is no need to run Start methods in a separate goroutine. (i.e. go kubeInformerFactory.Start(stopCh))
// Start method is non-blocking and runs all registered informers in a dedicated goroutine.
kubeInformerFactory.Start(wait.NeverStop)
swarmInformerFactory.Start(wait.NeverStop)
stopCh := make(chan struct{})
go func() {
sigTerm := make(chan os.Signal, 1)
signal.Notify(sigTerm, syscall.SIGTERM, syscall.SIGINT)
<-sigTerm
close(stopCh)
}()
if err = controller.Run(2, stopCh); err != nil {
klog.Fatalf("Error running controller: %s", err.Error())
}
},
}
func init() {
rootCmd.AddCommand(controllerCmd)
}