Ejemplo n.º 1
0
func getImageRetry(clientName, imageName string,
	timeoutTime time.Time) (*image.Image, error) {
	imageSrpcClient, err := srpc.DialHTTP("tcp", clientName, 0)
	if err != nil {
		return nil, err
	}
	defer imageSrpcClient.Close()
	for ; time.Now().Before(timeoutTime); time.Sleep(time.Second) {
		img, err := imgclient.GetImage(imageSrpcClient, imageName)
		if err != nil {
			return nil, err
		} else if img != nil {
			if err := img.FileSystem.RebuildInodePointers(); err != nil {
				return nil, err
			}
			img.FileSystem.InodeToFilenamesTable()
			img.FileSystem.FilenameToInodeTable()
			img.FileSystem.HashToInodesTable()
			img.FileSystem.ComputeTotalDataBytes()
			img.FileSystem.BuildEntryMap()
			return img, nil
		}
	}
	return nil, errors.New("timed out getting image")
}
Ejemplo n.º 2
0
func getImage(client *srpc.Client, name string) (*image.Image, error) {
	img, err := imgclient.GetImage(client, name)
	if err != nil {
		return nil, err
	}
	if img == nil {
		return nil, errors.New(name + ": not found")
	}
	img.FileSystem.RebuildInodePointers()
	return img, nil
}
Ejemplo n.º 3
0
func (m *Manager) loadImage(imageClient *srpc.Client, name string) (
	*srpc.Client, *image.Image, error) {
	if imageClient == nil {
		var err error
		imageClient, err = srpc.DialHTTP("tcp", m.imageServerAddress, 0)
		if err != nil {
			if !m.loggedDialFailure {
				m.logger.Printf("Error dialing: %s: %s\n",
					m.imageServerAddress, err)
				m.loggedDialFailure = true
			}
			return nil, nil, err
		}
	}
	img, err := client.GetImage(imageClient, name)
	if err != nil {
		m.logger.Printf("Error calling: %s\n", err)
		imageClient.Close()
		return nil, nil, err
	}
	if img == nil || m.scheduleExpiration(img, name) {
		return imageClient, nil, nil
	}
	if err := img.FileSystem.RebuildInodePointers(); err != nil {
		m.logger.Printf("Error building inode pointers for image: %s %s",
			name, err)
		return imageClient, nil, err
	}
	// Build cache data now to avoid potential concurrent builds later.
	img.FileSystem.InodeToFilenamesTable()
	img.FileSystem.FilenameToInodeTable()
	img.FileSystem.HashToInodesTable()
	img.FileSystem.ComputeTotalDataBytes()
	img.FileSystem.BuildEntryMap()
	m.logger.Printf("Got image: %s\n", name)
	return imageClient, img, nil
}