mirror of
https://github.com/gitpod-io/gitpod.git
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77 lines
2.2 KiB
Go
77 lines
2.2 KiB
Go
// Copyright (c) 2020 Gitpod GmbH. All rights reserved.
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// Licensed under the GNU Affero General Public License (AGPL).
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// See License-AGPL.txt in the project root for license information.
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package cmd
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import (
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"context"
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"fmt"
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"github.com/gitpod-io/gitpod/common-go/log"
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"github.com/gitpod-io/gitpod/ws-manager/pkg/manager"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/spf13/cobra"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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var debugHeadlessLogNS string
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// debugHeadlessLogCmd represents the debugHeadlessLog command
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var debugHeadlessLogCmd = &cobra.Command{
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Use: "headless-log <pod>",
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Short: "Starts a headless log listener on any pod and prints to stdout",
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Args: cobra.ExactArgs(1),
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Run: func(cmd *cobra.Command, args []string) {
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clientset, err := newClientSet()
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if err != nil {
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log.WithError(err).Fatal("cannot connect to Kubernetes")
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}
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log.Info("connected to Kubernetes")
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pod, err := clientset.CoreV1().Pods(debugHeadlessLogNS).Get(args[0], metav1.GetOptions{})
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if err != nil {
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log.WithError(err).Fatal("cannot start listener")
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return
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}
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if pod == nil {
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log.Fatal("pod is nil - this should not happen without an error")
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return
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}
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log.WithField("status", pod.Status).Info("debugging")
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listener := manager.NewHeadlessListener(clientset, debugHeadlessLogNS)
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var c uint64
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listener.LogLineHandler = func(pod *corev1.Pod, line string) (continueListening bool) {
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fmt.Printf("[%d %s] %s\n", c, time.Now().UTC().Format(time.RFC3339Nano), line)
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c++
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// log.WithField("pod", pod.Name).Info(line)
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return true
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}
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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err = listener.Listen(ctx, pod)
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if err != nil {
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log.WithError(err).Fatal("cannot listen to pod")
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return
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}
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sigChan := make(chan os.Signal, 1)
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signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)
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log.Info("Log listener is running. Stop with SIGINT or CTRL+C")
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<-sigChan
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log.Info("Received SIGINT - shutting down")
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},
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}
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func init() {
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debugCmd.AddCommand(debugHeadlessLogCmd)
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debugHeadlessLogCmd.PersistentFlags().StringVar(&debugHeadlessLogNS, "namespace", "", "Kubernetes namespace to work with")
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}
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