Esempio n. 1
0
// manifestSender sends a JSON-encoded response to the client including the
// list of files contained in the charm bundle.
func (h *charmsHandler) manifestSender(w http.ResponseWriter, r *http.Request, bundle *charm.Bundle) {
	manifest, err := bundle.Manifest()
	if err != nil {
		http.Error(
			w, fmt.Sprintf("unable to read archive in %q: %v", bundle.Path, err),
			http.StatusInternalServerError)
		return
	}
	h.sendJSON(w, http.StatusOK, &params.CharmsResponse{Files: manifest.SortedValues()})
}
Esempio n. 2
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// SetCharm adds and removes charms in s. The affected charm is identified by
// charmURL, which must be revisioned. If bundle is nil, the charm will be
// removed; otherwise, it will be stored. It is an error to store a bundle
// under a charmURL that does not share its name and revision.
func (s *MockCharmStore) SetCharm(charmURL *charm.URL, bundle *charm.Bundle) error {
	base := charmURL.WithRevision(-1).String()
	if charmURL.Revision < 0 {
		return fmt.Errorf("bad charm url revision")
	}
	if bundle == nil {
		delete(s.charms[base], charmURL.Revision)
		return nil
	}
	bundleRev := bundle.Revision()
	bundleName := bundle.Meta().Name
	if bundleName != charmURL.Name || bundleRev != charmURL.Revision {
		return fmt.Errorf("charm url %s mismatch with bundle %s-%d", charmURL, bundleName, bundleRev)
	}
	if _, found := s.charms[base]; !found {
		s.charms[base] = map[int]*charm.Bundle{}
	}
	s.charms[base][charmURL.Revision] = bundle
	return nil
}
Esempio n. 3
0
// repackageAndUploadCharm expands the given charm archive to a
// temporary directoy, repackages it with the given curl's revision,
// then uploads it to providr storage, and finally updates the state.
func (h *charmsHandler) repackageAndUploadCharm(archive *charm.Bundle, curl *charm.URL) error {
	// Create a temp dir to contain the extracted charm
	// dir and the repackaged archive.
	tempDir, err := ioutil.TempDir("", "charm-download")
	if err != nil {
		return errgo.Annotate(err, "cannot create temp directory")
	}
	defer os.RemoveAll(tempDir)
	extractPath := filepath.Join(tempDir, "extracted")
	repackagedPath := filepath.Join(tempDir, "repackaged.zip")
	repackagedArchive, err := os.Create(repackagedPath)
	if err != nil {
		return errgo.Annotate(err, "cannot repackage uploaded charm")
	}
	defer repackagedArchive.Close()

	// Expand and repack it with the revision specified by curl.
	archive.SetRevision(curl.Revision)
	if err := archive.ExpandTo(extractPath); err != nil {
		return errgo.Annotate(err, "cannot extract uploaded charm")
	}
	charmDir, err := charm.ReadDir(extractPath)
	if err != nil {
		return errgo.Annotate(err, "cannot read extracted charm")
	}

	// Bundle the charm and calculate its sha256 hash at the
	// same time.
	hash := sha256.New()
	err = charmDir.BundleTo(io.MultiWriter(hash, repackagedArchive))
	if err != nil {
		return errgo.Annotate(err, "cannot repackage uploaded charm")
	}
	bundleSHA256 := hex.EncodeToString(hash.Sum(nil))
	size, err := repackagedArchive.Seek(0, 2)
	if err != nil {
		return errgo.Annotate(err, "cannot get charm file size")
	}

	// Now upload to provider storage.
	if _, err := repackagedArchive.Seek(0, 0); err != nil {
		return errgo.Annotate(err, "cannot rewind the charm file reader")
	}
	storage, err := environs.GetStorage(h.state)
	if err != nil {
		return errgo.Annotate(err, "cannot access provider storage")
	}
	name := charm.Quote(curl.String())
	if err := storage.Put(name, repackagedArchive, size); err != nil {
		return errgo.Annotate(err, "cannot upload charm to provider storage")
	}
	storageURL, err := storage.URL(name)
	if err != nil {
		return errgo.Annotate(err, "cannot get storage URL for charm")
	}
	bundleURL, err := url.Parse(storageURL)
	if err != nil {
		return errgo.Annotate(err, "cannot parse storage URL")
	}

	// And finally, update state.
	_, err = h.state.UpdateUploadedCharm(archive, curl, bundleURL, bundleSHA256)
	if err != nil {
		return errgo.Annotate(err, "cannot update uploaded charm in state")
	}
	return nil
}