content

type Deleter interface {
	// Delete removes the content identified by the descriptor.
	Delete(ctx context.Context, target ocispec.Descriptor) error
}

type Fetcher interface {
	// Fetch fetches the content identified by the descriptor.
	Fetch(ctx context.Context, target ocispec.Descriptor) (io.ReadCloser, error)
}

type FetcherFunc func(ctx context.Context, target ocispec.Descriptor) (io.ReadCloser, error)

type GraphStorage interface {
	Storage
	PredecessorFinder
}

type LimitedStorage struct {
	Storage         // underlying storage
	PushLimit int64 // max size for push
}

type PredecessorFinder interface {
	// Predecessors returns the nodes directly pointing to the current node.
	Predecessors(ctx context.Context, node ocispec.Descriptor) ([]ocispec.Descriptor, error)
}

type Pusher interface {
	// Push pushes the content, matching the expected descriptor.
	// Reader is preferred to Writer so that the suitable buffer size can be
	// chosen by the underlying implementation. Furthermore, the implementation
	// can also do reflection on the Reader for more advanced I/O optimization.
	Push(ctx context.Context, expected ocispec.Descriptor, content io.Reader) error
}

type ReadOnlyGraphStorage interface {
	ReadOnlyStorage
	PredecessorFinder
}

type ReadOnlyStorage interface {
	Fetcher

	// Exists returns true if the described content exists.
	Exists(ctx context.Context, target ocispec.Descriptor) (bool, error)
}

type Resolver interface {
	// Resolve resolves a reference to a descriptor.
	Resolve(ctx context.Context, reference string) (ocispec.Descriptor, error)
}

type Storage interface {
	ReadOnlyStorage
	Pusher
}

type TagResolver interface {
	Tagger
	Resolver
}

type Tagger interface {
	// Tag tags a descriptor with a reference string.
	Tag(ctx context.Context, desc ocispec.Descriptor, reference string) error
}

type Untagger interface {
	// Untag untags the given reference string.
	Untag(ctx context.Context, reference string) error
}

type VerifyReader struct {
	// contains filtered or unexported fields
}