90 lines
1.8 KiB
Go
90 lines
1.8 KiB
Go
package main
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import (
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contextpkg "context"
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"fmt"
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"path/filepath"
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"github.com/docker/containerd/content"
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"github.com/docker/containerd/log"
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digest "github.com/opencontainers/go-digest"
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"github.com/urfave/cli"
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)
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var pathCommand = cli.Command{
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Name: "path",
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Usage: "print the path to one or more blobs",
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ArgsUsage: "[flags] [<digest>, ...]",
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Description: `Display the paths to one or more blobs.
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Output paths can be used to directly access blobs on disk.`,
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "root",
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Usage: "path to content store root",
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Value: ".content", // TODO(stevvooe): for now, just use the PWD/.content
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EnvVar: "CONTAINERD_DIST_CONTENT_STORE",
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},
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cli.BoolFlag{
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Name: "quiet, q",
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Usage: "elide digests in output",
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},
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},
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Action: func(context *cli.Context) error {
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var (
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ctx = contextpkg.Background()
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root = context.String("root")
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args = []string(context.Args())
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quiet = context.Bool("quiet")
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exitError error
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)
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if !filepath.IsAbs(root) {
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var err error
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root, err = filepath.Abs(root)
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if err != nil {
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return err
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}
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}
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cs, err := content.Open(root)
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if err != nil {
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return err
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}
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// TODO(stevvooe): Take the set of paths from stdin.
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if len(args) < 1 {
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return fmt.Errorf("please specify a blob digest")
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}
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for _, arg := range args {
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dgst, err := digest.Parse(arg)
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if err != nil {
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log.G(ctx).WithError(err).Errorf("parsing %q as digest failed", arg)
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if exitError == nil {
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exitError = err
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}
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continue
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}
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p, err := cs.GetPath(dgst)
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if err != nil {
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log.G(ctx).WithError(err).Errorf("getting path for %q failed", dgst)
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if exitError == nil {
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exitError = err
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}
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continue
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}
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if !quiet {
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fmt.Println(dgst, p)
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} else {
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fmt.Println(p)
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}
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}
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return exitError
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},
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}
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