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package getter
import (
"fmt"
"net/url"
"strings"
)
// GCSDetector implements Detector to detect GCS URLs and turn
// them into URLs that the GCSGetter can understand.
type GCSDetector struct{}
func (d *GCSDetector) Detect(src, _ string) (string, bool, error) {
if len(src) == 0 {
return "", false, nil
}
if strings.Contains(src, "googleapis.com/") {
return d.detectHTTP(src)
}
return "", false, nil
}
func (d *GCSDetector) detectHTTP(src string) (string, bool, error) {
parts := strings.Split(src, "/")
if len(parts) < 5 {
return "", false, fmt.Errorf(
"URL is not a valid GCS URL")
}
version := parts[2]
bucket := parts[3]
object := strings.Join(parts[4:], "/")
url, err := url.Parse(fmt.Sprintf("https://www.googleapis.com/storage/%s/%s/%s",
version, bucket, object))
if err != nil {
return "", false, fmt.Errorf("error parsing GCS URL: %s", err)
}
return "gcs::" + url.String(), true, nil
}
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