94 lines
2.8 KiB
Go
94 lines
2.8 KiB
Go
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package tarball
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import (
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"fmt"
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"os"
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"strings"
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"github.com/containers/image/docker/reference"
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"github.com/containers/image/image"
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"github.com/containers/image/types"
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imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
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)
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// ConfigUpdater is an interface that ImageReferences for "tarball" images also
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// implement. It can be used to set values for a configuration, and to set
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// image annotations which will be present in the images returned by the
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// reference's NewImage() or NewImageSource() methods.
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type ConfigUpdater interface {
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ConfigUpdate(config imgspecv1.Image, annotations map[string]string) error
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}
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type tarballReference struct {
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transport types.ImageTransport
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config imgspecv1.Image
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annotations map[string]string
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filenames []string
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stdin []byte
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}
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// ConfigUpdate updates the image's default configuration and adds annotations
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// which will be visible in source images created using this reference.
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func (r *tarballReference) ConfigUpdate(config imgspecv1.Image, annotations map[string]string) error {
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r.config = config
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if r.annotations == nil {
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r.annotations = make(map[string]string)
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}
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for k, v := range annotations {
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r.annotations[k] = v
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}
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return nil
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}
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func (r *tarballReference) Transport() types.ImageTransport {
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return r.transport
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}
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func (r *tarballReference) StringWithinTransport() string {
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return strings.Join(r.filenames, ":")
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}
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func (r *tarballReference) DockerReference() reference.Named {
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return nil
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}
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func (r *tarballReference) PolicyConfigurationIdentity() string {
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return ""
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}
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func (r *tarballReference) PolicyConfigurationNamespaces() []string {
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return nil
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}
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// NewImage returns a types.ImageCloser for this reference, possibly specialized for this ImageTransport.
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// The caller must call .Close() on the returned ImageCloser.
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// NOTE: If any kind of signature verification should happen, build an UnparsedImage from the value returned by NewImageSource,
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// verify that UnparsedImage, and convert it into a real Image via image.FromUnparsedImage.
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// WARNING: This may not do the right thing for a manifest list, see image.FromSource for details.
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func (r *tarballReference) NewImage(ctx *types.SystemContext) (types.ImageCloser, error) {
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src, err := r.NewImageSource(ctx)
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if err != nil {
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return nil, err
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}
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img, err := image.FromSource(ctx, src)
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if err != nil {
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src.Close()
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return nil, err
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}
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return img, nil
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}
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func (r *tarballReference) DeleteImage(ctx *types.SystemContext) error {
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for _, filename := range r.filenames {
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if err := os.Remove(filename); err != nil && !os.IsNotExist(err) {
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return fmt.Errorf("error removing %q: %v", filename, err)
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}
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}
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return nil
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}
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func (r *tarballReference) NewImageDestination(ctx *types.SystemContext) (types.ImageDestination, error) {
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return nil, fmt.Errorf("destination not implemented yet")
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}
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