Add a public const for "containerd.io/distribution.source" in `labels`
package and replace hardcoded usages.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Like stargz and nydus remote snapshotter, some snapshots
lables are introduced and passed to snapshotter from containerd
automatically. The label keys' length are all longer than 10.
The limitation of 10 characters makes it harder to debug what label
is not appropriate. So we'd better to print more of the wrong label.
Signed-off-by: Changwei Ge <gechangwei@bytedance.com>
Adds shared content labels to namespaces allowing content to be shared
between namespaces if that namespace is specifically tagged as being
sharable by adding the `containerd.io/namespace/sharable` label to the
namespace.
Signed-off-by: Cody Roseborough <cdr@amazon.com>
Go example:
```go
opts := []converter.Opt{
// convert Docker media types to OCI ones
converter.WithDocker2OCI(true),
// convert tar.gz layers to uncompressed tar layers
converter.WithLayerConvertFunc(uncompress.LayerConvertFunc),
}
srcRef := "example.com/foo:orig"
dstRef := "example.com/foo:converted"
dstImg, err = converter.Convert(ctx, client, dstRef, srcRef, opts...)
fmt.Println(dstImg.Target)
```
ctr example: `ctr images convert --oci --uncompress example.com/foo:orig example.com/foo:converted`
Go test: `go test -exec sudo -test.root -test.run TestConvert`
The implementation is from https://github.com/containerd/stargz-snapshotter/pull/224,
but eStargz-specific functions are not included in this PR.
eStargz converter can be specified by importing `estargz` package and using `WithLayerConvertFunc(estargz.LayerConvertFunc)` option.
This converter interface will be potentially useful for converting zstd and ocicrypt layers as well.
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
