Example #1
0
// restPath returns the path to the given resource.
func restPath(url *url.URL, h backend.Handle) string {
	u := *url

	var dir string

	switch h.Type {
	case backend.Config:
		dir = ""
		h.Name = "config"
	case backend.Data:
		dir = backend.Paths.Data
	case backend.Snapshot:
		dir = backend.Paths.Snapshots
	case backend.Index:
		dir = backend.Paths.Index
	case backend.Lock:
		dir = backend.Paths.Locks
	case backend.Key:
		dir = backend.Paths.Keys
	default:
		dir = string(h.Type)
	}

	u.Path = path.Join(url.Path, dir, h.Name)

	return u.String()
}
Example #2
0
func memLoad(be *MemoryBackend, h backend.Handle, p []byte, off int64) (int, error) {
	if err := h.Valid(); err != nil {
		return 0, err
	}

	be.m.Lock()
	defer be.m.Unlock()

	if h.Type == backend.Config {
		h.Name = ""
	}

	debug.Log("MemoryBackend.Load", "get %v offset %v len %v", h, off, len(p))

	if _, ok := be.data[entry{h.Type, h.Name}]; !ok {
		return 0, errors.New("no such data")
	}

	buf := be.data[entry{h.Type, h.Name}]
	if off > int64(len(buf)) {
		return 0, errors.New("offset beyond end of file")
	}

	buf = buf[off:]

	n := copy(p, buf)

	if len(p) > len(buf) {
		return n, io.ErrUnexpectedEOF
	}

	return n, nil
}
Example #3
0
func memStat(be *MemoryBackend, h backend.Handle) (backend.BlobInfo, error) {
	be.m.Lock()
	defer be.m.Unlock()

	if err := h.Valid(); err != nil {
		return backend.BlobInfo{}, err
	}

	if h.Type == backend.Config {
		h.Name = ""
	}

	debug.Log("MemoryBackend.Stat", "stat %v", h)

	e, ok := be.data[entry{h.Type, h.Name}]
	if !ok {
		return backend.BlobInfo{}, errors.New("no such data")
	}

	return backend.BlobInfo{Size: int64(len(e))}, nil
}
Example #4
0
func memSave(be *MemoryBackend, h backend.Handle, p []byte) error {
	if err := h.Valid(); err != nil {
		return err
	}

	be.m.Lock()
	defer be.m.Unlock()

	if h.Type == backend.Config {
		h.Name = ""
	}

	if _, ok := be.data[entry{h.Type, h.Name}]; ok {
		return errors.New("file already exists")
	}

	debug.Log("MemoryBackend.Save", "save %v bytes at %v", len(p), h)
	buf := make([]byte, len(p))
	copy(buf, p)
	be.data[entry{h.Type, h.Name}] = buf

	return nil
}