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common.go
executable file
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common.go
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package codespace
// This file defines functions common to the entire codespace command set.
import (
"context"
"errors"
"fmt"
"io"
"log"
"os"
"sort"
"github.com/AlecAivazis/survey/v2"
"github.com/AlecAivazis/survey/v2/terminal"
"github.com/ungtb10d/cli/v2/internal/browser"
"github.com/ungtb10d/cli/v2/internal/codespaces"
"github.com/ungtb10d/cli/v2/internal/codespaces/api"
"github.com/ungtb10d/cli/v2/pkg/iostreams"
"github.com/ungtb10d/cli/v2/pkg/liveshare"
"github.com/spf13/cobra"
"golang.org/x/crypto/ssh"
"golang.org/x/term"
)
type executable interface {
Executable() string
}
type App struct {
io *iostreams.IOStreams
apiClient apiClient
errLogger *log.Logger
executable executable
browser browser.Browser
}
func NewApp(io *iostreams.IOStreams, exe executable, apiClient apiClient, browser browser.Browser) *App {
errLogger := log.New(io.ErrOut, "", 0)
return &App{
io: io,
apiClient: apiClient,
errLogger: errLogger,
executable: exe,
browser: browser,
}
}
// StartProgressIndicatorWithLabel starts a progress indicator with a message.
func (a *App) StartProgressIndicatorWithLabel(s string) {
a.io.StartProgressIndicatorWithLabel(s)
}
// StopProgressIndicator stops the progress indicator.
func (a *App) StopProgressIndicator() {
a.io.StopProgressIndicator()
}
type liveshareSession interface {
Close() error
GetSharedServers(context.Context) ([]*liveshare.Port, error)
KeepAlive(string)
OpenStreamingChannel(context.Context, liveshare.ChannelID) (ssh.Channel, error)
StartJupyterServer(context.Context) (int, string, error)
StartSharing(context.Context, string, int) (liveshare.ChannelID, error)
StartSSHServer(context.Context) (int, string, error)
StartSSHServerWithOptions(context.Context, liveshare.StartSSHServerOptions) (int, string, error)
RebuildContainer(context.Context, bool) error
}
// Connects to a codespace using Live Share and returns that session
func startLiveShareSession(ctx context.Context, codespace *api.Codespace, a *App, debug bool, debugFile string) (session liveshareSession, err error) {
liveshareLogger := noopLogger()
if debug {
debugLogger, err := newFileLogger(debugFile)
if err != nil {
return nil, fmt.Errorf("couldn't create file logger: %w", err)
}
defer safeClose(debugLogger, &err)
liveshareLogger = debugLogger.Logger
a.errLogger.Printf("Debug file located at: %s", debugLogger.Name())
}
session, err = codespaces.ConnectToLiveshare(ctx, a, liveshareLogger, a.apiClient, codespace)
if err != nil {
return nil, fmt.Errorf("failed to connect to Live Share: %w", err)
}
return session, nil
}
//go:generate moq -fmt goimports -rm -skip-ensure -out mock_api.go . apiClient
type apiClient interface {
GetCodespace(ctx context.Context, name string, includeConnection bool) (*api.Codespace, error)
GetOrgMemberCodespace(ctx context.Context, orgName string, userName string, codespaceName string) (*api.Codespace, error)
ListCodespaces(ctx context.Context, opts api.ListCodespacesOptions) ([]*api.Codespace, error)
DeleteCodespace(ctx context.Context, name string, orgName string, userName string) error
StartCodespace(ctx context.Context, name string) error
StopCodespace(ctx context.Context, name string, orgName string, userName string) error
CreateCodespace(ctx context.Context, params *api.CreateCodespaceParams) (*api.Codespace, error)
EditCodespace(ctx context.Context, codespaceName string, params *api.EditCodespaceParams) (*api.Codespace, error)
GetRepository(ctx context.Context, nwo string) (*api.Repository, error)
GetCodespacesMachines(ctx context.Context, repoID int, branch, location string, devcontainerPath string) ([]*api.Machine, error)
GetCodespaceRepositoryContents(ctx context.Context, codespace *api.Codespace, path string) ([]byte, error)
ListDevContainers(ctx context.Context, repoID int, branch string, limit int) (devcontainers []api.DevContainerEntry, err error)
GetCodespaceRepoSuggestions(ctx context.Context, partialSearch string, params api.RepoSearchParameters) ([]string, error)
GetCodespaceBillableOwner(ctx context.Context, nwo string) (*api.User, error)
}
var errNoCodespaces = errors.New("you have no codespaces")
func chooseCodespace(ctx context.Context, apiClient apiClient) (*api.Codespace, error) {
codespaces, err := apiClient.ListCodespaces(ctx, api.ListCodespacesOptions{})
if err != nil {
return nil, fmt.Errorf("error getting codespaces: %w", err)
}
return chooseCodespaceFromList(ctx, codespaces, false)
}
// chooseCodespaceFromList returns the codespace that the user has interactively selected from the list, or
// an error if there are no codespaces.
func chooseCodespaceFromList(ctx context.Context, codespaces []*api.Codespace, includeOwner bool) (*api.Codespace, error) {
if len(codespaces) == 0 {
return nil, errNoCodespaces
}
sortedCodespaces := codespaces
sort.Slice(sortedCodespaces, func(i, j int) bool {
return sortedCodespaces[i].CreatedAt > sortedCodespaces[j].CreatedAt
})
csSurvey := []*survey.Question{
{
Name: "codespace",
Prompt: &survey.Select{
Message: "Choose codespace:",
Options: formatCodespacesForSelect(sortedCodespaces, includeOwner),
},
Validate: survey.Required,
},
}
var answers struct {
Codespace int
}
if err := ask(csSurvey, &answers); err != nil {
return nil, fmt.Errorf("error getting answers: %w", err)
}
return sortedCodespaces[answers.Codespace], nil
}
func formatCodespacesForSelect(codespaces []*api.Codespace, includeOwner bool) []string {
names := make([]string, len(codespaces))
for i, apiCodespace := range codespaces {
cs := codespace{apiCodespace}
names[i] = cs.displayName(includeOwner)
}
return names
}
// getOrChooseCodespace prompts the user to choose a codespace if the codespaceName is empty.
// It then fetches the codespace record with full connection details.
// TODO(josebalius): accept a progress indicator or *App and show progress when fetching.
func getOrChooseCodespace(ctx context.Context, apiClient apiClient, codespaceName string) (codespace *api.Codespace, err error) {
if codespaceName == "" {
codespace, err = chooseCodespace(ctx, apiClient)
if err != nil {
if err == errNoCodespaces {
return nil, err
}
return nil, fmt.Errorf("choosing codespace: %w", err)
}
} else {
codespace, err = apiClient.GetCodespace(ctx, codespaceName, true)
if err != nil {
return nil, fmt.Errorf("getting full codespace details: %w", err)
}
}
if codespace.PendingOperation {
return nil, fmt.Errorf(
"codespace is disabled while it has a pending operation: %s",
codespace.PendingOperationDisabledReason,
)
}
return codespace, nil
}
func safeClose(closer io.Closer, err *error) {
if closeErr := closer.Close(); *err == nil {
*err = closeErr
}
}
// hasTTY indicates whether the process connected to a terminal.
// It is not portable to assume stdin/stdout are fds 0 and 1.
var hasTTY = term.IsTerminal(int(os.Stdin.Fd())) && term.IsTerminal(int(os.Stdout.Fd()))
// ask asks survey questions on the terminal, using standard options.
// It fails unless hasTTY, but ideally callers should avoid calling it in that case.
func ask(qs []*survey.Question, response interface{}) error {
if !hasTTY {
return fmt.Errorf("no terminal")
}
err := survey.Ask(qs, response, survey.WithShowCursor(true))
// The survey package temporarily clears the terminal's ISIG mode bit
// (see tcsetattr(3)) so the QUIT button (Ctrl-C) is reported as
// ASCII \x03 (ETX) instead of delivering SIGINT to the application.
// So we have to serve ourselves the SIGINT.
//
// https://github.com/AlecAivazis/survey/#why-isnt-ctrl-c-working
if err == terminal.InterruptErr {
self, _ := os.FindProcess(os.Getpid())
_ = self.Signal(os.Interrupt) // assumes POSIX
// Suspend the goroutine, to avoid a race between
// return from main and async delivery of INT signal.
select {}
}
return err
}
var ErrTooManyArgs = errors.New("the command accepts no arguments")
func noArgsConstraint(cmd *cobra.Command, args []string) error {
if len(args) > 0 {
return ErrTooManyArgs
}
return nil
}
func noopLogger() *log.Logger {
return log.New(io.Discard, "", 0)
}
type codespace struct {
*api.Codespace
}
// displayName formats the codespace name for the interactive selector prompt.
func (c codespace) displayName(includeOwner bool) string {
branch := c.branchWithGitStatus()
displayName := c.DisplayName
if displayName == "" {
displayName = c.Name
}
description := fmt.Sprintf("%s (%s): %s", c.Repository.FullName, branch, displayName)
if includeOwner {
description = fmt.Sprintf("%-15s %s", c.Owner.Login, description)
}
return description
}
// gitStatusDirty represents an unsaved changes status.
const gitStatusDirty = "*"
// branchWithGitStatus returns the branch with a star
// if the branch is currently being worked on.
func (c codespace) branchWithGitStatus() string {
if c.hasUnsavedChanges() {
return c.GitStatus.Ref + gitStatusDirty
}
return c.GitStatus.Ref
}
// hasUnsavedChanges returns whether the environment has
// unsaved changes.
func (c codespace) hasUnsavedChanges() bool {
return c.GitStatus.HasUncommitedChanges || c.GitStatus.HasUnpushedChanges
}
// running returns whether the codespace environment is running.
func (c codespace) running() bool {
return c.State == api.CodespaceStateAvailable
}