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main.go
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main.go
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package main
import (
"flag"
"log"
"github.com/kyma-project/kyma/components/environments/internal/controller"
"github.com/pkg/errors"
"github.com/vrischmann/envconfig"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
)
func main() {
kubeconfig := flag.String("kubeconfig", "", "Path to a kubeconfig file")
var cfg controller.EnvironmentsConfig
err := envconfig.InitWithPrefix(&cfg, "APP")
panicOnError(errors.Wrap(err, "while reading configuration from environment variables"))
flag.Parse()
config, err := getClientConfig(*kubeconfig)
panicOnError(err)
clientset, err := kubernetes.NewForConfig(config)
panicOnError(err)
controllerInstance, err := controller.NewController(clientset, &cfg)
panicOnError(err)
stop := make(chan struct{})
go controllerInstance.Run(stop)
log.Println("Started listening")
<-stop
}
func panicOnError(err error) {
if err != nil {
panic(err)
}
}
func getClientConfig(kubeconfig string) (*rest.Config, error) {
if kubeconfig != "" {
return clientcmd.BuildConfigFromFlags("", kubeconfig)
}
return rest.InClusterConfig()
}