func runDownload(args *docopt.Args) error {
if err := os.MkdirAll(args.String["--root"], 0755); err != nil {
return fmt.Errorf("error creating root dir: %s", err)
}
// create a TUF client and update it
tufDB := args.String["--tuf-db"]
local, err := tuf.FileLocalStore(tufDB)
if err != nil {
return err
}
remote, err := tuf.HTTPRemoteStore(args.String["--repository"], tufHTTPOpts("downloader"))
if err != nil {
return err
}
client := tuf.NewClient(local, remote)
if err := updateTUFClient(client); err != nil {
return err
}
// pull images from the TUF repo
if err := pinkerton.PullImagesWithClient(
client,
args.String["--repository"],
args.String["--driver"],
args.String["--root"],
pinkerton.InfoPrinter(false),
); err != nil {
return err
}
// download the upstart config and image manifests
if err := os.MkdirAll(args.String["--config-dir"], 0755); err != nil {
return fmt.Errorf("error creating config dir: %s", err)
}
for _, path := range []string{"/upstart.conf", "/bootstrap-manifest.json"} {
if _, err := downloadGzippedFile(client, path, args.String["--config-dir"]); err != nil {
return err
}
}
// download the init and cli binaries
if err := os.MkdirAll(args.String["--bin-dir"], 0755); err != nil {
return fmt.Errorf("error creating bin dir: %s", err)
}
for _, path := range []string{"/flynn-linux-amd64", "/flynn-init", "/flynn-nsumount"} {
dst, err := downloadGzippedFile(client, path, args.String["--bin-dir"])
if err != nil {
return err
}
if err := os.Chmod(dst, 0755); err != nil {
return err
}
}
return nil
}
func main() {
usage := `Pinkerton manages Docker images.
Usage:
pinkerton pull [options] <image-url>
pinkerton checkout [options] <id> <image-id>
pinkerton cleanup [options] <id>
pinkerton -h | --help
Commands:
pull Download a Docker image
checkout Create a working copy of an image
cleanup Destroy a working copy of an image
Examples:
pinkerton pull https://registry.hub.docker.com/redis
pinkerton pull https://registry.hub.docker.com/ubuntu?tag=trusty
pinkerton pull https://registry.hub.docker.com/flynn/slugrunner?id=1443bd6a675b959693a1a4021d660bebbdbff688d00c65ff057c46702e4b8933
pinkerton checkout slugrunner-test 1443bd6a675b959693a1a4021d660bebbdbff688d00c65ff057c46702e4b8933
pinkerton cleanup slugrunner-test
Options:
-h, --help show this message and exit
--driver=<name> storage driver [default: aufs]
--root=<path> storage root [default: /var/lib/docker]
--json emit json-formatted output
`
args, _ := docopt.Parse(usage, nil, true, "", false)
ctx, err := pinkerton.BuildContext(args.String["--driver"], args.String["--root"])
if err != nil {
log.Fatal(err)
}
switch {
case args.Bool["pull"]:
if err := ctx.Pull(args.String["<image-url>"], pinkerton.InfoPrinter(args.Bool["--json"])); err != nil {
log.Fatal(err)
}
case args.Bool["checkout"]:
path, err := ctx.Checkout(args.String["<id>"], args.String["<image-id>"])
if err != nil {
log.Fatal(err)
}
fmt.Println(path)
case args.Bool["cleanup"]:
if err := ctx.Cleanup(args.String["<id>"]); err != nil {
log.Fatal(err)
}
}
}
func runDownload(args *docopt.Args) error {
if err := os.MkdirAll(args.String["--root"], 0755); err != nil {
return fmt.Errorf("error creating root dir: %s", err)
}
// create a TUF client and update it
tufDB := args.String["--tuf-db"]
local, err := tuf.FileLocalStore(tufDB)
if err != nil {
return err
}
remote, err := tuf.HTTPRemoteStore(args.String["--repository"], tufHTTPOpts("downloader"))
if err != nil {
return err
}
client := tuf.NewClient(local, remote)
if err := updateTUFClient(client); err != nil {
return err
}
// pull images from the TUF repo
if err := pinkerton.PullImagesWithClient(
client,
args.String["--repository"],
args.String["--driver"],
args.String["--root"],
pinkerton.InfoPrinter(false),
); err != nil {
return err
}
if _, err := downloader.DownloadConfig(client, args.String["--config-dir"]); err != nil {
return err
}
if _, err := downloader.DownloadBinaries(client, args.String["--bin-dir"]); err != nil {
return err
}
return nil
}
func runDownload(args *docopt.Args) error {
if err := os.MkdirAll(args.String["--root"], 0755); err != nil {
return fmt.Errorf("error creating root dir: %s", err)
}
var manifest map[string]string
if err := cliutil.DecodeJSONArg(args.String["<manifest>"], &manifest); err != nil {
return err
}
ctx, err := pinkerton.BuildContext(args.String["--driver"], args.String["--root"])
if err != nil {
return err
}
for image, id := range manifest {
fmt.Printf("Downloading %s %s...\n", image, id)
image += "?id=" + id
if err := ctx.Pull(image, pinkerton.InfoPrinter(false)); err != nil {
return err
}
}
return nil
}
func runDownload(args *docopt.Args) error {
if err := os.MkdirAll(args.String["--root"], 0755); err != nil {
return fmt.Errorf("error creating root dir: %s", err)
}
log := log15.New()
// create a TUF client and update it
log.Info("initializing TUF client")
tufDB := args.String["--tuf-db"]
local, err := tuf.FileLocalStore(tufDB)
if err != nil {
log.Error("error creating local TUF client", "err", err)
return err
}
remote, err := tuf.HTTPRemoteStore(args.String["--repository"], tufHTTPOpts("downloader"))
if err != nil {
log.Error("error creating remote TUF client", "err", err)
return err
}
client := tuf.NewClient(local, remote)
if err := updateTUFClient(client); err != nil {
log.Error("error updating TUF client", "err", err)
return err
}
configDir := args.String["--config-dir"]
version := os.Getenv("FLYNN_VERSION")
if version == "" {
version, err = getChannelVersion(configDir, client, log)
if err != nil {
return err
}
}
log.Info(fmt.Sprintf("downloading components with version %s", version))
log.Info("downloading images")
if err := pinkerton.PullImagesWithClient(
client,
args.String["--repository"],
args.String["--driver"],
args.String["--root"],
version,
pinkerton.InfoPrinter(false),
); err != nil {
return err
}
d := downloader.New(client, version)
log.Info(fmt.Sprintf("downloading config to %s", configDir))
if _, err := d.DownloadConfig(configDir); err != nil {
log.Error("error downloading config", "err", err)
return err
}
binDir := args.String["--bin-dir"]
log.Info(fmt.Sprintf("downloading binaries to %s", binDir))
if _, err := d.DownloadBinaries(binDir); err != nil {
log.Error("error downloading binaries", "err", err)
return err
}
log.Info("download complete")
return nil
}