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pushobject.go
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pushobject.go
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package main
import (
"fmt"
"github.com/containerd/containerd/content"
"github.com/containerd/containerd/log"
digest "github.com/opencontainers/go-digest"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/urfave/cli"
)
var pushObjectCommand = cli.Command{
Name: "push-object",
Usage: "pushes an object to a remote",
ArgsUsage: "[flags] <remote> <object> <type>",
Description: `Push objects by identifier to a remote.`,
Flags: registryFlags,
Action: func(clicontext *cli.Context) error {
var (
ref = clicontext.Args().Get(0)
object = clicontext.Args().Get(1)
media = clicontext.Args().Get(2)
)
dgst, err := digest.Parse(object)
if err != nil {
return err
}
ctx, cancel := appContext(clicontext)
defer cancel()
resolver, err := getResolver(ctx, clicontext)
if err != nil {
return err
}
ctx = log.WithLogger(ctx, log.G(ctx).WithField("ref", ref))
log.G(ctx).Infof("resolving")
pusher, err := resolver.Pusher(ctx, ref)
if err != nil {
return err
}
cs, err := resolveContentStore(clicontext)
if err != nil {
return err
}
info, err := cs.Info(ctx, dgst)
if err != nil {
return err
}
desc := ocispec.Descriptor{
MediaType: media,
Digest: dgst,
Size: info.Size,
}
rc, err := cs.Reader(ctx, dgst)
if err != nil {
return err
}
defer rc.Close()
cw, err := pusher.Push(ctx, desc)
if err != nil {
return err
}
// TODO: Progress reader
if err := content.Copy(cw, rc, desc.Size, desc.Digest); err != nil {
return err
}
fmt.Printf("Pushed %s %s\n", desc.Digest, desc.MediaType)
return nil
},
}