Example #1
0
// OutOfSync checks if the container is out of sync with the service definition.
// It looks if the the service hash container label is the same as the computed one.
func (s *Service) OutOfSync(ctx context.Context, c *container.Container) (bool, error) {
	if c.ImageConfig() != s.serviceConfig.Image {
		logrus.Debugf("Images for %s do not match %s!=%s", c.Name(), c.ImageConfig(), s.serviceConfig.Image)
		return true, nil
	}

	expectedHash := config.GetServiceHash(s.name, s.Config())
	if c.Hash() != expectedHash {
		logrus.Debugf("Hashes for %s do not match %s!=%s", c.Name(), c.Hash(), expectedHash)
		return true, nil
	}

	image, err := image.InspectImage(ctx, s.clientFactory.Create(s), c.ImageConfig())
	if err != nil {
		if client.IsErrImageNotFound(err) {
			logrus.Debugf("Image %s do not exist, do not know if it's out of sync", c.Image())
			return false, nil
		}
		return false, err
	}

	logrus.Debugf("Checking existing image name vs id: %s == %s", image.ID, c.Image())
	return image.ID != c.Image(), err
}