Exemple #1
0
func (u *Updater) update() error {
	up := update.New()
	if err := up.CanUpdate(); err != nil {
		return err
	}

	if err := os.MkdirAll(updateDir, 0755); err != nil {
		return err
	}
	local, err := tuf.FileLocalStore(filepath.Join(updateDir, "tuf.db"))
	if err != nil {
		return err
	}
	plat := fmt.Sprintf("%s-%s", runtime.GOOS, runtime.GOARCH)
	opts := &tuf.HTTPRemoteOptions{
		UserAgent: fmt.Sprintf("flynn-cli/%s %s", version.String(), plat),
		Retries:   tuf.DefaultHTTPRetries,
	}
	remote, err := tuf.HTTPRemoteStore(u.repo, opts)
	if err != nil {
		return err
	}
	client := tuf.NewClient(local, remote)
	if err := u.updateTUFClient(client); err != nil {
		return err
	}

	name := fmt.Sprintf("/flynn-%s.gz", plat)

	latestVersion, err := tufutil.GetVersion(client, name)
	if err != nil {
		return err
	}
	if latestVersion == version.String() {
		return nil
	}

	bin := &tufBuffer{}
	if err := client.Download(name, bin); err != nil {
		return err
	}
	gr, err := gzip.NewReader(bin)
	if err != nil {
		return err
	}

	err, errRecover := up.FromStream(gr)
	if errRecover != nil {
		return fmt.Errorf("update and recovery errors: %q %q", err, errRecover)
	}
	if err != nil {
		return err
	}
	log.Printf("Updated %s -> %s.", version.String(), latestVersion)
	return nil
}
Exemple #2
0
func (h *jobAPI) PullBinariesAndConfig(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
	log := h.host.log.New("fn", "PullBinariesAndConfig")

	log.Info("extracting TUF database")
	tufDB, err := extractTufDB(r)
	if err != nil {
		log.Error("error extracting TUF database", "err", err)
		httphelper.Error(w, err)
		return
	}
	defer os.Remove(tufDB)

	query := r.URL.Query()

	log.Info("creating local TUF store")
	local, err := tuf.FileLocalStore(tufDB)
	if err != nil {
		log.Error("error creating local TUF store", "err", err)
		httphelper.Error(w, err)
		return
	}
	opts := &tuf.HTTPRemoteOptions{
		UserAgent: fmt.Sprintf("flynn-host/%s %s-%s pull", version.String(), runtime.GOOS, runtime.GOARCH),
		Retries:   tuf.DefaultHTTPRetries,
	}
	log.Info("creating remote TUF store")
	remote, err := tuf.HTTPRemoteStore(query.Get("repository"), opts)
	if err != nil {
		log.Error("error creating remote TUF store", "err", err)
		httphelper.Error(w, err)
		return
	}
	client := tuf.NewClient(local, remote)
	d := downloader.New(client, query.Get("version"))

	log.Info("downloading binaries")
	paths, err := d.DownloadBinaries(query.Get("bin-dir"))
	if err != nil {
		log.Error("error downloading binaries", "err", err)
		httphelper.Error(w, err)
		return
	}

	log.Info("downloading config")
	configs, err := d.DownloadConfig(query.Get("config-dir"))
	if err != nil {
		log.Error("error downloading config", "err", err)
		httphelper.Error(w, err)
		return
	}
	for k, v := range configs {
		paths[k] = v
	}

	httphelper.JSON(w, 200, paths)
}
Exemple #3
0
func newTufClient(tufDB, repository string) (*tuf.Client, error) {
	local, err := tuf.FileLocalStore(tufDB)
	if err != nil {
		return nil, err
	}
	opts := &tuf.HTTPRemoteOptions{
		UserAgent: fmt.Sprintf("flynn-host/%s %s-%s pull", version.String(), runtime.GOOS, runtime.GOARCH),
		Retries:   tufutil.DefaultHTTPRetries,
	}
	remote, err := tuf.HTTPRemoteStore(repository, opts)
	if err != nil {
		return nil, err
	}
	return tuf.NewClient(local, remote), nil
}
Exemple #4
0
func PullImages(tufDB, repository, driver, root, ver string, progress chan<- layer.PullInfo) error {
	local, err := tuf.FileLocalStore(tufDB)
	if err != nil {
		return err
	}
	opts := &tuf.HTTPRemoteOptions{
		UserAgent: fmt.Sprintf("pinkerton/%s %s-%s pull", version.String(), runtime.GOOS, runtime.GOARCH),
		Retries:   tuf.DefaultHTTPRetries,
	}
	remote, err := tuf.HTTPRemoteStore(repository, opts)
	if err != nil {
		return err
	}
	return PullImagesWithClient(tuf.NewClient(local, remote), repository, driver, root, ver, progress)
}
Exemple #5
0
func tufClient(args *docopt.Args) (*tuf.Client, error) {
	store, ok := args.String["--store"]
	if !ok {
		store = args.String["-s"]
	}
	local, err := tuf.FileLocalStore(store)
	if err != nil {
		return nil, err
	}
	remote, err := tuf.HTTPRemoteStore(args.String["<url>"], nil)
	if err != nil {
		return nil, err
	}
	return tuf.NewClient(local, remote), nil
}
Exemple #6
0
func newTUFClient(uri, tufDB string) (*tuf.Client, error) {
	u, err := url.Parse(uri)
	if err != nil {
		return nil, err
	}
	baseURL := &url.URL{Scheme: u.Scheme, Host: u.Host, Path: u.Path}
	remote, err := tuf.HTTPRemoteStore(baseURL.String(), nil)
	if err != nil {
		return nil, err
	}
	local, err := tuf.FileLocalStore(tufDB)
	if err != nil {
		return nil, err
	}
	client := tuf.NewClient(local, remote)
	if _, err := client.Update(); err != nil && !tuf.IsLatestSnapshot(err) {
		return nil, err
	}
	return client, nil
}
Exemple #7
0
func runDownload(args *docopt.Args) error {
	log := log15.New()

	log.Info("initializing ZFS volumes")
	volPath := args.String["--volpath"]
	volDB := filepath.Join(volPath, "volumes.bolt")
	volMan := volumemanager.New(volDB, log, func() (volume.Provider, error) {
		return zfs.NewProvider(&zfs.ProviderConfig{
			DatasetName: zfs.DefaultDatasetName,
			Make:        zfs.DefaultMakeDev(volPath, log),
			WorkingDir:  filepath.Join(volPath, "zfs"),
		})
	})
	if err := volMan.OpenDB(); err != nil {
		log.Error("error opening volume database, make sure flynn-host is not running", "err", err)
		return err
	}

	// 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"]

	requestedVersion := os.Getenv("FLYNN_VERSION")
	if requestedVersion == "" {
		requestedVersion, err = getChannelVersion(configDir, client, log)
		if err != nil {
			return err
		}
	}
	log.Info(fmt.Sprintf("downloading components with version %s", requestedVersion))

	d := downloader.New(client, volMan, requestedVersion)

	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
	}

	// use the requested version of flynn-host to download the images as
	// the format changed in v20161106
	if version.String() != requestedVersion {
		log.Info(fmt.Sprintf("executing %s flynn-host binary", requestedVersion))
		binPath := filepath.Join(binDir, "flynn-host")
		argv := append([]string{binPath}, os.Args[1:]...)
		return syscall.Exec(binPath, argv, os.Environ())
	}

	log.Info("downloading images")
	ch := make(chan *ct.ImagePullInfo)
	go func() {
		for info := range ch {
			switch info.Type {
			case ct.ImagePullTypeImage:
				log.Info(fmt.Sprintf("pulling %s image", info.Name))
			case ct.ImagePullTypeLayer:
				log.Info(fmt.Sprintf("pulling %s layer %s (%s)",
					info.Name, info.Layer.ID, units.BytesSize(float64(info.Layer.Length))))
			}
		}
	}()
	if err := d.DownloadImages(configDir, ch); err != nil {
		log.Error("error downloading images", "err", err)
		return err
	}

	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
	}

	log.Info("download complete")
	return nil
}
Exemple #8
0
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
}
Exemple #9
0
func runUpdate(args *docopt.Args) error {
	log := log15.New()

	// create and update a TUF client
	log.Info("initializing TUF client")
	local, err := tuf.FileLocalStore(args.String["--tuf-db"])
	if err != nil {
		log.Error("error creating local TUF client", "err", err)
		return err
	}
	remote, err := tuf.HTTPRemoteStore(args.String["--repository"], tufHTTPOpts("updater"))
	if err != nil {
		log.Error("error creating remote TUF client", "err", err)
		return err
	}
	client := tuf.NewClient(local, remote)

	if !args.Bool["--is-latest"] {
		return updateAndExecLatest(args.String["--config-dir"], client, log)
	}

	// unlink the current binary if it is a temp file
	if args.Bool["--is-tempfile"] {
		os.Remove(os.Args[0])
	}

	// read the TUF db so we can pass it to hosts
	log.Info("reading TUF database")
	tufDB, err := ioutil.ReadFile(args.String["--tuf-db"])
	if err != nil {
		log.Error("error reading the TUF database", "err", err)
		return err
	}

	log.Info("getting host list")
	clusterClient := cluster.NewClient()
	hosts, err := clusterClient.Hosts()
	if err != nil {
		log.Error("error getting host list", "err", err)
		return err
	}
	if len(hosts) == 0 {
		return errors.New("no hosts found")
	}

	log.Info(fmt.Sprintf("updating %d hosts", len(hosts)))

	// eachHost invokes the given function in a goroutine for each host,
	// returning an error if any of the functions returns an error.
	eachHost := func(f func(*cluster.Host, log15.Logger) error) (err error) {
		errs := make(chan error)
		for _, h := range hosts {
			go func(host *cluster.Host) {
				log := log.New("host", host.ID())
				errs <- f(host, log)
			}(h)
		}
		for range hosts {
			if e := <-errs; e != nil {
				err = e
			}
		}
		return
	}

	log.Info("checking host version compatibility")
	if err := eachHost(func(host *cluster.Host, log log15.Logger) error {
		status, err := host.GetStatus()
		if err != nil {
			log.Error("error getting host status", "err", err)
			return err
		}
		v := version.Parse(status.Version)
		if v.Before(version.Parse(minVersion)) && !v.Dev {
			log.Error(ErrIncompatibleVersion.Error(), "version", status.Version)
			return ErrIncompatibleVersion
		}
		return nil
	}); err != nil {
		return err
	}

	var mtx sync.Mutex
	images := make(map[string]string)
	log.Info("pulling latest images on all hosts")
	if err := eachHost(func(host *cluster.Host, log log15.Logger) error {
		log.Info("pulling images")
		ch := make(chan *layer.PullInfo)
		stream, err := host.PullImages(
			args.String["--repository"],
			args.String["--driver"],
			args.String["--root"],
			version.String(),
			bytes.NewReader(tufDB),
			ch,
		)
		if err != nil {
			log.Error("error pulling images", "err", err)
			return err
		}
		defer stream.Close()
		for info := range ch {
			if info.Type == layer.TypeLayer {
				continue
			}
			log.Info("pulled image", "name", info.Repo)
			imageURI := fmt.Sprintf("%s?name=%s&id=%s", args.String["--repository"], info.Repo, info.ID)
			mtx.Lock()
			images[info.Repo] = imageURI
			mtx.Unlock()
		}
		if err := stream.Err(); err != nil {
			log.Error("error pulling images", "err", err)
			return err
		}
		return nil
	}); err != nil {
		return err
	}

	var binaries map[string]string
	log.Info("pulling latest binaries and config on all hosts")
	if err := eachHost(func(host *cluster.Host, log log15.Logger) error {
		log.Info("pulling binaries and config")
		paths, err := host.PullBinariesAndConfig(
			args.String["--repository"],
			args.String["--bin-dir"],
			args.String["--config-dir"],
			version.String(),
			bytes.NewReader(tufDB),
		)
		if err != nil {
			log.Error("error pulling binaries and config", "err", err)
			return err
		}
		mtx.Lock()
		binaries = paths
		mtx.Unlock()
		log.Info("binaries and config pulled successfully")
		return nil
	}); err != nil {
		return err
	}

	log.Info("validating binaries")
	flynnHost, ok := binaries["flynn-host"]
	if !ok {
		return fmt.Errorf("missing flynn-host binary")
	}
	flynnInit, ok := binaries["flynn-init"]
	if !ok {
		return fmt.Errorf("missing flynn-init binary")
	}

	log.Info("updating flynn-host daemon on all hosts")
	if err := eachHost(func(host *cluster.Host, log log15.Logger) error {
		// TODO(lmars): handle daemons using custom flags (e.g. --state=/foo)
		_, err := host.Update(
			flynnHost,
			"daemon",
			"--id", host.ID(),
			"--flynn-init", flynnInit,
		)
		if err != nil {
			log.Error("error updating binaries", "err", err)
			return err
		}
		log.Info("flynn-host updated successfully")
		return nil
	}); err != nil {
		return err
	}

	updaterImage, ok := images["flynn/updater"]
	if !ok {
		e := "missing flynn/updater image"
		log.Error(e)
		return errors.New(e)
	}
	imageJSON, err := json.Marshal(images)
	if err != nil {
		log.Error("error encoding images", "err", err)
		return err
	}

	// use a flag to determine whether to use a TTY log formatter because actually
	// assigning a TTY to the job causes reading images via stdin to fail.
	cmd := exec.Command(exec.DockerImage(updaterImage), "/bin/updater", fmt.Sprintf("--tty=%t", term.IsTerminal(os.Stdout.Fd())))
	cmd.Stdin = bytes.NewReader(imageJSON)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	if err := cmd.Run(); err != nil {
		return err
	}
	log.Info("update complete")
	return nil
}