98 lines
2.3 KiB
Go
98 lines
2.3 KiB
Go
package codespace
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import (
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"context"
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"fmt"
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"net"
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"strings"
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"github.com/cli/cli/v2/internal/codespaces"
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"github.com/cli/cli/v2/internal/codespaces/rpc"
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"github.com/cli/cli/v2/pkg/liveshare"
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"github.com/spf13/cobra"
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)
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func newJupyterCmd(app *App) *cobra.Command {
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var selector *CodespaceSelector
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jupyterCmd := &cobra.Command{
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Use: "jupyter",
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Short: "Open a codespace in JupyterLab",
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Args: noArgsConstraint,
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RunE: func(cmd *cobra.Command, args []string) error {
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return app.Jupyter(cmd.Context(), selector)
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},
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}
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selector = AddCodespaceSelector(jupyterCmd, app.apiClient)
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return jupyterCmd
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}
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func (a *App) Jupyter(ctx context.Context, selector *CodespaceSelector) (err error) {
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// Ensure all child tasks (e.g. port forwarding) terminate before return.
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ctx, cancel := context.WithCancel(ctx)
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defer cancel()
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codespace, err := selector.Select(ctx)
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if err != nil {
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return err
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}
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session, err := startLiveShareSession(ctx, codespace, a, false, "")
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if err != nil {
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return err
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}
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defer safeClose(session, &err)
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var (
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invoker rpc.Invoker
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serverPort int
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serverUrl string
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)
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err = a.RunWithProgress("Starting JupyterLab on codespace", func() (err error) {
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invoker, err = rpc.CreateInvoker(ctx, session)
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if err != nil {
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return
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}
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serverPort, serverUrl, err = invoker.StartJupyterServer(ctx)
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return
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})
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if invoker != nil {
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defer safeClose(invoker, &err)
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}
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if err != nil {
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return err
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}
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// Pass 0 to pick a random port
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listen, _, err := codespaces.ListenTCP(0, false)
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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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destPort := listen.Addr().(*net.TCPAddr).Port
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tunnelClosed := make(chan error, 1)
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go func() {
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fwd := liveshare.NewPortForwarder(session, "jupyter", serverPort, true)
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tunnelClosed <- fwd.ForwardToListener(ctx, listen) // always non-nil
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}()
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// Server URL contains an authentication token that must be preserved
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targetUrl := strings.Replace(serverUrl, fmt.Sprintf("%d", serverPort), fmt.Sprintf("%d", destPort), 1)
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err = a.browser.Browse(targetUrl)
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if err != nil {
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return fmt.Errorf("failed to open JupyterLab in browser: %w", err)
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}
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fmt.Fprintln(a.io.Out, targetUrl)
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select {
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case err := <-tunnelClosed:
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return fmt.Errorf("tunnel closed: %w", err)
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case <-ctx.Done():
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return nil // success
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}
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}
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