/
main.go
65 lines (50 loc) · 1.81 KB
/
main.go
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package main
import (
"context"
"flag"
"log"
"os"
"k8s.io/client-go/kubernetes"
_ "k8s.io/client-go/plugin/pkg/client/auth"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
"k8s.io/client-go/tools/clientcmd/api"
"github.com/pivotal/kpack/pkg/logs"
)
var (
kubeconfig = flag.String("kubeconfig", "", "Path to a kubeconfig.")
masterURL = flag.String("master", "", "The address of the Kubernetes API server. Overrides any value in kubeconfig.")
image = flag.String("image", "", "The image name to tail logs")
build = flag.String("build", "", "The build number to tail logs")
namespace = flag.String("namespace", "default", "The namespace of the image")
)
func main() {
flag.Parse()
clusterConfig, err := BuildConfigFromFlags(*masterURL, *kubeconfig)
if err != nil {
log.Fatalf("Error building kubeconfig: %v", err)
}
k8sClient, err := kubernetes.NewForConfig(clusterConfig)
if err != nil {
log.Fatalf("could not get kubernetes client: %s", err.Error())
}
if (*build) == "" {
err = logs.NewBuildLogsClient(k8sClient).TailImage(context.Background(), os.Stdout, *image, *namespace)
} else {
err = logs.NewBuildLogsClient(k8sClient).Tail(context.Background(), os.Stdout, *image, *build, *namespace, false)
}
if err != nil {
log.Fatalf("error tailing logs %s", err)
}
}
func BuildConfigFromFlags(masterURL, kubeconfigPath string) (*rest.Config, error) {
var clientConfigLoader clientcmd.ClientConfigLoader
if kubeconfigPath == "" {
clientConfigLoader = clientcmd.NewDefaultClientConfigLoadingRules()
} else {
clientConfigLoader = &clientcmd.ClientConfigLoadingRules{ExplicitPath: kubeconfigPath}
}
return clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
clientConfigLoader,
&clientcmd.ConfigOverrides{ClusterInfo: api.Cluster{Server: masterURL}}).ClientConfig()
}