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main.go
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main.go
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package main
import (
"fmt"
"github.com/pete911/controller/pkg"
"github.com/pete911/controller/pkg/handler"
"github.com/pete911/controller/pkg/k8s"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"log/slog"
"os"
"os/signal"
"syscall"
)
func main() {
flags := pkg.ParseFlags()
logger := pkg.NewLogger(flags.SlogLevel())
logger.Info(fmt.Sprintf("starting controller with flags: %+v", flags))
if err := run(logger); err != nil {
logger.Error(err.Error())
os.Exit(1)
}
}
func run(logger *slog.Logger) error {
restConfig, err := rest.InClusterConfig()
if err != nil {
return fmt.Errorf("rest in cluster config: %v", err)
}
clientset, err := kubernetes.NewForConfig(restConfig)
if err != nil {
return fmt.Errorf("clientset for config: %v", err)
}
podHandler := handler.NewHandler(logger)
podController, err := k8s.NewPodController(logger, clientset, "", podHandler)
if err != nil {
return fmt.Errorf("new pod informer: %v", err)
}
podController.Run(getStopCh(logger))
logger.Info("controller stopped")
return nil
}
func getStopCh(logger *slog.Logger) <-chan struct{} {
stopCh := make(chan struct{})
sigCh := make(chan os.Signal, 1)
signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
go func() {
logger.Debug("listening for SIGINT and SIGTERM")
s := <-sigCh
logger.Info(fmt.Sprintf("received %s signal, stopping", s))
close(stopCh)
}()
return stopCh
}