vendor/github.com/hashicorp/go-getter/detect_gcs.go

   1 package getter
   2
   3 import (
   4         "fmt"
   5         "net/url"
   6         "strings"
   7 )
   8
   9 // GCSDetector implements Detector to detect GCS URLs and turn
  10 // them into URLs that the GCSGetter can understand.
  11 type GCSDetector struct{}
  12
  13 func (d *GCSDetector) Detect(src, _ string) (string, bool, error) {
  14         if len(src) == 0 {
  15                 return "", false, nil
  16         }
  17
  18         if strings.Contains(src, "googleapis.com/") {
  19                 return d.detectHTTP(src)
  20         }
  21
  22         return "", false, nil
  23 }
  24
  25 func (d *GCSDetector) detectHTTP(src string) (string, bool, error) {
  26
  27         parts := strings.Split(src, "/")
  28         if len(parts) < 5 {
  29                 return "", false, fmt.Errorf(
  30                         "URL is not a valid GCS URL")
  31         }
  32         version := parts[2]
  33         bucket := parts[3]
  34         object := strings.Join(parts[4:], "/")
  35
  36         url, err := url.Parse(fmt.Sprintf("https://www.googleapis.com/storage/%s/%s/%s",
  37                 version, bucket, object))
  38         if err != nil {
  39                 return "", false, fmt.Errorf("error parsing GCS URL: %s", err)
  40         }
  41
  42         return "gcs::" + url.String(), true, nil
  43 }