containerd/cmd/dist/get.go

48 lines
979 B
Go

package main
import (
"io"
"os"
contentapi "github.com/containerd/containerd/api/services/content"
contentservice "github.com/containerd/containerd/services/content"
digest "github.com/opencontainers/go-digest"
"github.com/urfave/cli"
)
var getCommand = cli.Command{
Name: "get",
Usage: "get the data for an object",
ArgsUsage: "[flags] [<digest>, ...]",
Description: `Display the paths to one or more blobs.
Output paths can be used to directly access blobs on disk.`,
Flags: []cli.Flag{},
Action: func(context *cli.Context) error {
var (
ctx = background
)
dgst, err := digest.Parse(context.Args().First())
if err != nil {
return err
}
conn, err := connectGRPC(context)
if err != nil {
return err
}
cs := contentservice.NewProviderFromClient(contentapi.NewContentClient(conn))
rc, err := cs.Reader(ctx, dgst)
if err != nil {
return err
}
defer rc.Close()
_, err = io.Copy(os.Stdout, rc)
return err
},
}