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reader.go
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reader.go
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package ociclient
import (
"context"
"fmt"
"github.com/rogpeppe/ociregistry"
"github.com/rogpeppe/ociregistry/internal/ocirequest"
)
func (c *client) GetBlob(ctx context.Context, repo string, digest ociregistry.Digest) (ociregistry.BlobReader, error) {
return c.read(ctx, &ocirequest.Request{
Kind: ocirequest.ReqBlobGet,
Repo: repo,
Digest: string(digest),
})
}
func (c *client) ResolveBlob(ctx context.Context, repo string, digest ociregistry.Digest) (ociregistry.Descriptor, error) {
return c.resolve(ctx, &ocirequest.Request{
Kind: ocirequest.ReqBlobHead,
Repo: repo,
Digest: string(digest),
})
}
func (c *client) ResolveManifest(ctx context.Context, repo string, digest ociregistry.Digest) (ociregistry.Descriptor, error) {
return c.resolve(ctx, &ocirequest.Request{
Kind: ocirequest.ReqManifestHead,
Repo: repo,
Digest: string(digest),
})
}
func (c *client) ResolveTag(ctx context.Context, repo string, tag string) (ociregistry.Descriptor, error) {
return c.resolve(ctx, &ocirequest.Request{
Kind: ocirequest.ReqManifestHead,
Repo: repo,
Tag: tag,
})
}
func (c *client) resolve(ctx context.Context, rreq *ocirequest.Request) (ociregistry.Descriptor, error) {
resp, err := c.doRequest(ctx, rreq)
if err != nil {
return ociregistry.Descriptor{}, err
}
resp.Body.Close()
desc, err := descriptorFromResponse(resp, "", true)
if err != nil {
return ociregistry.Descriptor{}, fmt.Errorf("invalid descriptor in response: %v", err)
}
return desc, nil
}
func (c *client) GetManifest(ctx context.Context, repo string, digest ociregistry.Digest) (ociregistry.BlobReader, error) {
return c.read(ctx, &ocirequest.Request{
Kind: ocirequest.ReqManifestGet,
Repo: repo,
Digest: string(digest),
})
}
func (c *client) GetTag(ctx context.Context, repo string, tagName string) (ociregistry.BlobReader, error) {
return c.read(ctx, &ocirequest.Request{
Kind: ocirequest.ReqManifestGet,
Repo: repo,
Tag: tagName,
})
}
func (c *client) read(ctx context.Context, rreq *ocirequest.Request) (_ ociregistry.BlobReader, _err error) {
resp, err := c.doRequest(ctx, rreq)
if err != nil {
return nil, err
}
defer closeOnError(&_err, resp.Body)
desc, err := descriptorFromResponse(resp, ociregistry.Digest(rreq.Digest), true)
if err != nil {
return nil, fmt.Errorf("invalid descriptor in response: %v", err)
}
return &blobReader{
ReadCloser: resp.Body,
desc: desc,
}, nil
}