112 lines
2.9 KiB
Go
112 lines
2.9 KiB
Go
package codespaces
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"strings"
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"time"
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"github.com/github/ghcs/api"
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)
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// PostCreateStateStatus is a string value representing the different statuses a state can have.
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type PostCreateStateStatus string
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func (p PostCreateStateStatus) String() string {
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return strings.Title(string(p))
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}
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const (
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PostCreateStateRunning PostCreateStateStatus = "running"
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PostCreateStateSuccess PostCreateStateStatus = "succeeded"
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PostCreateStateFailed PostCreateStateStatus = "failed"
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)
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// PostCreateState is a combination of a state and status value that is captured
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// during codespace creation.
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type PostCreateState struct {
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Name string `json:"name"`
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Status PostCreateStateStatus `json:"status"`
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}
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// PollPostCreateStates watches for state changes in a codespace,
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// and calls the supplied poller for each batch of state changes.
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// It runs until the context is cancelled or SSH tunnel is closed.
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func PollPostCreateStates(ctx context.Context, log logger, apiClient *api.API, user *api.User, codespace *api.Codespace, poller func([]PostCreateState)) error {
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token, err := apiClient.GetCodespaceToken(ctx, user.Login, codespace.Name)
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if err != nil {
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return fmt.Errorf("getting codespace token: %v", err)
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}
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lsclient, err := ConnectToLiveshare(ctx, log, apiClient, user.Login, token, codespace)
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if err != nil {
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return fmt.Errorf("connect to liveshare: %v", err)
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}
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port, err := UnusedPort()
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if err != nil {
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return err
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}
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fwd, err := NewPortForwarder(ctx, lsclient, "sshd", port)
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if err != nil {
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return fmt.Errorf("creating port forwarder: %v", err)
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}
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tunnelClosed := make(chan error, 1) // buffered to avoid sender stuckness
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go func() {
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tunnelClosed <- fwd.Start(ctx) // error is non-nil
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}()
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t := time.NewTicker(1 * time.Second)
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defer t.Stop()
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for {
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select {
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case <-ctx.Done():
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return nil // canceled
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case err := <-tunnelClosed:
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return fmt.Errorf("connection failed: %v", err)
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case <-t.C:
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states, err := getPostCreateOutput(ctx, port, codespace)
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if err != nil {
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return fmt.Errorf("get post create output: %v", err)
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}
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poller(states)
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}
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}
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}
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func getPostCreateOutput(ctx context.Context, tunnelPort int, codespace *api.Codespace) ([]PostCreateState, error) {
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cmd := NewRemoteCommand(
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ctx, tunnelPort, sshDestination(codespace),
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"cat /workspaces/.codespaces/shared/postCreateOutput.json",
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)
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stdout := new(bytes.Buffer)
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cmd.Stdout = stdout
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if err := cmd.Run(); err != nil {
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return nil, fmt.Errorf("run command: %v", err)
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}
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var output struct {
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Steps []PostCreateState `json:"steps"`
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}
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if err := json.Unmarshal(stdout.Bytes(), &output); err != nil {
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return nil, fmt.Errorf("unmarshal output: %v", err)
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}
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return output.Steps, nil
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}
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// TODO(josebalius): this won't be needed soon
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func sshDestination(codespace *api.Codespace) string {
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user := "codespace"
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if codespace.RepositoryNWO == "github/github" {
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user = "root"
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}
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return user + "@localhost"
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}
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