Add continue option to backport.go (#22930)
Sometimes it can be helpful to continue from a broken cherry-pick. This PR adds another option which can be used to determine the version and pr number from the current branch name instead of reading the config.yaml file. --------- Signed-off-by: Andrew Thornton <art27@cantab.net>
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@ -79,6 +79,10 @@ func main() {
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Name: "no-xdg-open",
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Usage: "Set this flag to not use xdg-open to open the PR URL",
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},
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cli.BoolFlag{
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Name: "continue",
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Usage: "Set this flag to continue from a git cherry-pick that has broken",
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},
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}
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cli.AppHelpTemplate = `NAME:
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{{.Name}} - {{.Usage}}
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@ -104,7 +108,19 @@ func runBackport(c *cli.Context) error {
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ctx, cancel := installSignals()
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defer cancel()
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continuing := c.Bool("continue")
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var pr string
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version := c.String("version")
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if version == "" && continuing {
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// determine version from current branch name
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var err error
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pr, version, err = readCurrentBranch(ctx)
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if err != nil {
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return err
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}
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}
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if version == "" {
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version = readVersion()
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}
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@ -135,13 +151,14 @@ func runBackport(c *cli.Context) error {
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localReleaseBranch := path.Join(upstream, upstreamReleaseBranch)
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args := c.Args()
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if len(args) == 0 {
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if len(args) == 0 && pr == "" {
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return fmt.Errorf("no PR number provided\nProvide a PR number to backport")
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} else if len(args) != 1 {
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} else if len(args) != 1 && pr == "" {
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return fmt.Errorf("multiple PRs provided %v\nOnly a single PR can be backported at a time", args)
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}
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pr := args[0]
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if pr == "" {
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pr = args[0]
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}
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backportBranch := c.String("backport-branch")
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if backportBranch == "" {
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@ -168,8 +185,10 @@ func runBackport(c *cli.Context) error {
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}
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}
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if err := checkoutBackportBranch(ctx, backportBranch, localReleaseBranch); err != nil {
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return err
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if !continuing {
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if err := checkoutBackportBranch(ctx, backportBranch, localReleaseBranch); err != nil {
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return err
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}
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}
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if err := cherrypick(ctx, sha); err != nil {
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@ -353,6 +372,22 @@ func determineRemote(ctx context.Context, forkUser string) (string, string, erro
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return "", "", fmt.Errorf("unable to find appropriate remote in:\n%s", string(out))
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}
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func readCurrentBranch(ctx context.Context) (pr, version string, err error) {
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out, err := exec.CommandContext(ctx, "git", "branch", "--show-current").Output()
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if err != nil {
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fmt.Fprintf(os.Stderr, "Unable to read current git branch:\n%s\n", string(out))
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return "", "", fmt.Errorf("unable to read current git branch: %w", err)
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}
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parts := strings.Split(strings.TrimSpace(string(out)), "-")
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if len(parts) != 3 || parts[0] != "backport" {
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fmt.Fprintf(os.Stderr, "Unable to continue from git branch:\n%s\n", string(out))
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return "", "", fmt.Errorf("unable to continue from git branch:\n%s", string(out))
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}
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return parts[1], parts[2], nil
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}
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func readVersion() string {
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bs, err := os.ReadFile("docs/config.yaml")
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if err != nil {
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