96 lines
2.5 KiB
Go
96 lines
2.5 KiB
Go
package main
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import (
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"context"
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"fmt"
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"net"
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"os"
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"github.com/github/ghcs/api"
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"github.com/github/ghcs/cmd/ghcs/output"
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"github.com/github/ghcs/internal/codespaces"
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"github.com/github/go-liveshare"
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"github.com/spf13/cobra"
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"golang.org/x/sync/errgroup"
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)
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func newLogsCmd() *cobra.Command {
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var tail bool
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logsCmd := &cobra.Command{
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Use: "logs [<codespace>]",
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Short: "Access codespace logs",
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Args: cobra.MaximumNArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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var codespaceName string
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if len(args) > 0 {
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codespaceName = args[0]
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}
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return logs(context.Background(), tail, codespaceName)
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},
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}
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logsCmd.Flags().BoolVarP(&tail, "tail", "t", false, "Tail the logs")
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return logsCmd
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}
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func init() {
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rootCmd.AddCommand(newLogsCmd())
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}
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func logs(ctx context.Context, tail bool, codespaceName string) error {
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// Ensure all child tasks (port forwarding, remote exec) terminate before return.
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ctx, cancel := context.WithCancel(ctx)
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defer cancel()
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apiClient := api.New(os.Getenv("GITHUB_TOKEN"))
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log := output.NewLogger(os.Stdout, os.Stderr, false)
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user, err := apiClient.GetUser(ctx)
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if err != nil {
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return fmt.Errorf("getting user: %v", err)
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}
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codespace, token, err := codespaces.GetOrChooseCodespace(ctx, apiClient, user, codespaceName)
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if err != nil {
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return fmt.Errorf("get or choose codespace: %v", err)
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}
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session, err := codespaces.ConnectToLiveshare(ctx, log, apiClient, user.Login, token, codespace)
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if err != nil {
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return fmt.Errorf("connecting to Live Share: %v", err)
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}
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// Ensure local port is listening before client (getPostCreateOutput) connects.
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listen, err := net.Listen("tcp", ":0") // arbitrary port
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if err != nil {
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return err
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}
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defer listen.Close()
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localPort := listen.Addr().(*net.TCPAddr).Port
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remoteSSHServerPort, sshUser, err := codespaces.StartSSHServer(ctx, session, log)
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if err != nil {
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return fmt.Errorf("error getting ssh server details: %v", err)
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}
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cmdType := "cat"
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if tail {
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cmdType = "tail -f"
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}
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dst := fmt.Sprintf("%s@localhost", sshUser)
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cmd := codespaces.NewRemoteCommand(
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ctx, localPort, dst, fmt.Sprintf("%s /workspaces/.codespaces/.persistedshare/creation.log", cmdType),
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)
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group, ctx := errgroup.WithContext(ctx)
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group.Go(func() error {
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fwd := liveshare.NewPortForwarder(session, "sshd", remoteSSHServerPort)
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err := fwd.ForwardToListener(ctx, listen) // error is non-nil
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return fmt.Errorf("connection closed: %v", err)
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})
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group.Go(cmd.Run)
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return group.Wait()
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}
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