distribution

type Config struct {
	// MetaHeaders stores HTTP headers with metadata about the image
	MetaHeaders map[string][]string
	// AuthConfig holds authentication credentials for authenticating with
	// the registry.
	AuthConfig *registry.AuthConfig
	// ProgressOutput is the interface for showing the status of the pull
	// operation.
	ProgressOutput progress.Output
	// RegistryService is the registry service to use for TLS configuration
	// and endpoint lookup.
	RegistryService RegistryResolver
	// ImageEventLogger notifies events for a given image
	ImageEventLogger func(id, name string, action events.Action)
	// MetadataStore is the storage backend for distribution-specific
	// metadata.
	MetadataStore metadata.Store
	// ImageStore manages images.
	ImageStore ImageConfigStore
	// ReferenceStore manages tags. This value is optional, when excluded
	// content will not be tagged.
	ReferenceStore refstore.Store
}

type ContentStore interface {
	content.Ingester
	content.Provider
	Info(ctx context.Context, dgst digest.Digest) (content.Info, error)
	Abort(ctx context.Context, ref string) error
	Update(ctx context.Context, info content.Info, fieldpaths ...string) (content.Info, error)
}

type ImageConfigStore interface {
	Put(context.Context, []byte) (digest.Digest, error)
	Get(context.Context, digest.Digest) ([]byte, error)
}

type ImagePullConfig struct {
	Config

	// DownloadManager manages concurrent pulls.
	DownloadManager *xfer.LayerDownloadManager
	// Schema2Types is an optional list of valid schema2 configuration types
	// allowed by the pull operation. If omitted, the default list of accepted
	// types is used.
	Schema2Types []string
	// Platform is the requested platform of the image being pulled
	Platform *ocispec.Platform
}

type ImagePushConfig struct {
	Config

	// ConfigMediaType is the configuration media type for
	// schema2 manifests.
	ConfigMediaType string
	// LayerStores manages layers.
	LayerStores PushLayerProvider
	// UploadManager dispatches uploads.
	UploadManager *xfer.LayerUploadManager
}

type PushLayer interface {
	ChainID() layer.ChainID
	DiffID() layer.DiffID
	Parent() PushLayer
	Open() (io.ReadCloser, error)
	Size() int64
	MediaType() string
	Release()
}

type PushLayerProvider interface {
	Get(layer.ChainID) (PushLayer, error)
}

type RegistryResolver interface {
	LookupPushEndpoints(hostname string) (endpoints []registrypkg.APIEndpoint, err error)
	LookupPullEndpoints(hostname string) (endpoints []registrypkg.APIEndpoint, err error)
	ResolveRepository(name reference.Named) (*registrypkg.RepositoryInfo, error)
}