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e15276232e
This will allow us to cleanly move genericImage into a separate package. This costs an extra pointer, but also allows us to rely on the type system and drop handling "certainly impossible" errors, worth it just for this simplification anyway.
54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
package docker
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"github.com/projectatomic/skopeo/types"
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)
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// Image is a Docker-specific implementation of types.Image with a few extra methods
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// which are specific to Docker.
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type Image struct {
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types.Image
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src *dockerImageSource
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}
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// NewDockerImage returns a new Image interface type after setting up
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// a client to the registry hosting the given image.
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func NewDockerImage(img, certPath string, tlsVerify bool) (types.Image, error) {
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s, err := newDockerImageSource(img, certPath, tlsVerify)
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if err != nil {
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return nil, err
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}
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return &Image{Image: GenericImageFromSource(s), src: s}, nil
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}
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// SourceRefFullName returns a fully expanded name for the repository this image is in.
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func (i *Image) SourceRefFullName() string {
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return i.src.ref.FullName()
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}
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// GetRepositoryTags list all tags available in the repository. Note that this has no connection with the tag(s) used for this specific image, if any.
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func (i *Image) GetRepositoryTags() ([]string, error) {
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url := fmt.Sprintf(tagsURL, i.src.ref.RemoteName())
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res, err := i.src.c.makeRequest("GET", url, nil, nil)
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if err != nil {
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return nil, err
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}
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defer res.Body.Close()
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if res.StatusCode != http.StatusOK {
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// print url also
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return nil, fmt.Errorf("Invalid status code returned when fetching tags list %d", res.StatusCode)
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}
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type tagsRes struct {
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Tags []string
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}
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tags := &tagsRes{}
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if err := json.NewDecoder(res.Body).Decode(tags); err != nil {
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return nil, err
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}
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return tags.Tags, nil
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}
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