func installBazelisk()

in pkg/rbeconfigsgen/rbeconfigsgen.go [372:401]

• 27 lines of code
• 7 McCabe index (conditional complexity)

func installBazelisk(d *dockerRunner, downloadDir, execOS string) (string, error) {
	url, filename, err := BazeliskDownloadInfo(execOS)
	if err != nil {
		return "", fmt.Errorf("unable to determine how to download Bazelisk for execution OS %q: %w", execOS, err)
	}
	resp, err := http.Get(url)
	if err != nil {
		return "", fmt.Errorf("unable to initiate download for Bazelisk from %s: %w", url, err)
	}
	defer resp.Body.Close()

	localPath := path.Join(downloadDir, filename)
	o, err := os.Create(localPath)
	if err != nil {
		return "", fmt.Errorf("unable to open a file at %q to download Bazelisk to: %w", localPath, err)
	}
	if _, err := io.Copy(o, resp.Body); err != nil {
		return "", fmt.Errorf("error while downloading Bazelisk to %s: %w", localPath, err)
	}

	bazeliskContainerPath := path.Join(d.workdir, filename)
	if err := d.copyToContainer(localPath, bazeliskContainerPath); err != nil {
		return "", fmt.Errorf("failed to copy the downloaded Bazelisk binary into the container: %w", err)
	}

	if _, err := d.execCmd("chmod", "+x", bazeliskContainerPath); err != nil {
		return "", fmt.Errorf("failed to mark the Bazelisk binary as executable inside the container: %w", err)
	}
	return bazeliskContainerPath, nil
}