func getFromMetadata()

in main.go [449:477]

• 29 lines of code
• 5 McCabe index (conditional complexity)

func getFromMetadata(urlStr string) ([]byte, error) {
	parsedURL, err := url.Parse(urlStr)
	if err != nil {
		return nil, err
	}
	client := &http.Client{
		Timeout: 5 * time.Second,
	}
	req := &http.Request{
		Method: "GET",
		URL:    parsedURL,
		Header: http.Header{
			"Metadata-Flavor": {"Google"},
		},
	}
	resp, err := client.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed communicating with metadata server: %w", err)
	}
	body, err := io.ReadAll(resp.Body)
	resp.Body.Close()
	if err != nil {
		return nil, fmt.Errorf("failed reading from metadata server: %w", err)
	}
	if code := resp.StatusCode; code < 200 || code > 299 {
		return nil, fmt.Errorf("metadata server returned status code %d for url %q", code, parsedURL)
	}
	return body, nil
}