109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
/*
|
|
Copyright The containerd Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package transfer
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
|
|
"github.com/containerd/containerd/images"
|
|
"github.com/containerd/containerd/pkg/unpack"
|
|
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
|
|
)
|
|
|
|
type Transferer interface {
|
|
Transfer(context.Context, interface{}, interface{}, ...Opt) error
|
|
}
|
|
|
|
type ImageResolver interface {
|
|
Resolve(ctx context.Context) (name string, desc ocispec.Descriptor, err error)
|
|
|
|
Fetcher(ctx context.Context, ref string) (Fetcher, error)
|
|
}
|
|
|
|
type Fetcher interface {
|
|
Fetch(ctx context.Context, desc ocispec.Descriptor) (io.ReadCloser, error)
|
|
}
|
|
|
|
// ImageFilterer is used to filter out child objects of an image
|
|
type ImageFilterer interface {
|
|
ImageFilter(images.HandlerFunc) images.HandlerFunc
|
|
}
|
|
|
|
// ImageStorer is a type which is capable of storing an image to
|
|
// for a provided descriptor
|
|
type ImageStorer interface {
|
|
Store(context.Context, ocispec.Descriptor) (images.Image, error)
|
|
}
|
|
|
|
// ImageImportStreamer returns an import streamer based on OCI or
|
|
// Docker image tar archives. The stream should be a raw tar stream
|
|
// and without compression.
|
|
type ImageImportStreamer interface {
|
|
ImportStream(context.Context) (io.Reader, error)
|
|
}
|
|
|
|
type ImageExportStreamer interface {
|
|
ExportStream(context.Context) (io.WriteCloser, error)
|
|
}
|
|
|
|
type ImageUnpacker interface {
|
|
// TODO: Or unpack options?
|
|
UnpackPlatforms() []unpack.Platform
|
|
}
|
|
|
|
type ProgressFunc func(Progress)
|
|
|
|
type TransferOpts struct {
|
|
Progress ProgressFunc
|
|
}
|
|
|
|
type Opt func(*TransferOpts)
|
|
|
|
func WithProgress(f ProgressFunc) Opt {
|
|
return func(opts *TransferOpts) {
|
|
opts.Progress = f
|
|
}
|
|
}
|
|
|
|
type Progress struct {
|
|
Event string
|
|
Name string
|
|
Parents []string
|
|
Progress int64
|
|
Total int64
|
|
// Descriptor?
|
|
}
|
|
|
|
/*
|
|
// Distribution options
|
|
// Stream handler
|
|
// Progress rate
|
|
// Unpack options
|
|
// Remote options
|
|
// Cases:
|
|
// Registry -> Content/ImageStore (pull)
|
|
// Registry -> Registry
|
|
// Content/ImageStore -> Registry (push)
|
|
// Content/ImageStore -> Content/ImageStore (tag)
|
|
// Common fetch/push interface for registry, content/imagestore, OCI index
|
|
// Always starts with string for source and destination, on client side, does not need to resolve
|
|
// Higher level implementation just takes strings and options
|
|
// Lower level implementation takes pusher/fetcher?
|
|
|
|
*/
|