image_tag.go 889 B

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  1. package client
  2. import (
  3. "errors"
  4. "fmt"
  5. "net/url"
  6. "golang.org/x/net/context"
  7. distreference "github.com/docker/distribution/reference"
  8. "github.com/docker/docker/api/types/reference"
  9. )
  10. // ImageTag tags an image in the docker host
  11. func (cli *Client) ImageTag(ctx context.Context, imageID, ref string) error {
  12. distributionRef, err := distreference.ParseNamed(ref)
  13. if err != nil {
  14. return fmt.Errorf("Error parsing reference: %q is not a valid repository/tag", ref)
  15. }
  16. if _, isCanonical := distributionRef.(distreference.Canonical); isCanonical {
  17. return errors.New("refusing to create a tag with a digest reference")
  18. }
  19. tag := reference.GetTagFromNamedRef(distributionRef)
  20. query := url.Values{}
  21. query.Set("repo", distributionRef.Name())
  22. query.Set("tag", tag)
  23. resp, err := cli.post(ctx, "/images/"+imageID+"/tag", query, nil, nil)
  24. ensureReaderClosed(resp)
  25. return err
  26. }