56 lines
1.8 KiB
Go
56 lines
1.8 KiB
Go
package containerd
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import (
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"context"
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"errors"
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"io"
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"github.com/containerd/containerd"
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"github.com/containerd/containerd/platforms"
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"github.com/docker/distribution"
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"github.com/docker/distribution/reference"
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"github.com/docker/docker/api/types/registry"
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"github.com/docker/docker/errdefs"
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"github.com/opencontainers/go-digest"
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specs "github.com/opencontainers/image-spec/specs-go/v1"
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)
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// PullImage initiates a pull operation. image is the repository name to pull, and
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// tagOrDigest may be either empty, or indicate a specific tag or digest to pull.
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func (i *ImageService) PullImage(ctx context.Context, image, tagOrDigest string, platform *specs.Platform, metaHeaders map[string][]string, authConfig *registry.AuthConfig, outStream io.Writer) error {
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var opts []containerd.RemoteOpt
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if platform != nil {
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opts = append(opts, containerd.WithPlatform(platforms.Format(*platform)))
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}
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ref, err := reference.ParseNormalizedNamed(image)
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if err != nil {
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return errdefs.InvalidParameter(err)
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}
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// TODO(thaJeztah) this could use a WithTagOrDigest() utility
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if tagOrDigest != "" {
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// The "tag" could actually be a digest.
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var dgst digest.Digest
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dgst, err = digest.Parse(tagOrDigest)
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if err == nil {
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ref, err = reference.WithDigest(reference.TrimNamed(ref), dgst)
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} else {
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ref, err = reference.WithTag(ref, tagOrDigest)
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}
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if err != nil {
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return errdefs.InvalidParameter(err)
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}
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}
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resolver := newResolverFromAuthConfig(authConfig)
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opts = append(opts, containerd.WithResolver(resolver))
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_, err = i.client.Pull(ctx, ref.String(), opts...)
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return err
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}
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// GetRepository returns a repository from the registry.
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func (i *ImageService) GetRepository(ctx context.Context, ref reference.Named, authConfig *registry.AuthConfig) (distribution.Repository, error) {
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return nil, errdefs.NotImplemented(errors.New("not implemented"))
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}
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