// extractVersionsFromList returns a list of image names that match the given
// release, channel and arch sorted in descendant version number order
func (c *Client) extractVersionsFromList(options flags.Options) ([]string, error) {
options.Release = removeDot(options.Release)
var imageIDs sort.StringSlice
imageIDs, err := c.getImageList(imgTemplate(&options))
if err != nil {
return imageIDs, err
}
if len(imageIDs) > 0 {
sort.Sort(sort.Reverse(imageIDs[:]))
return imageIDs, nil
}
return []string{}, NewErrVersionNotFound(&options)
}
func (r *Runner) cleanup(options *flags.Options) (err error) {
options.Release = strings.Replace(options.Release, ".", "", 1)
imageList, err := r.imgDataTarget.GetVersions(options)
if err != nil {
log.Info("Error getting image list")
return
}
if len(imageList) > imagesToKeep {
// assumes that imageList is sorted in descending order,
// the last items in the list will be the older ones
log.Infof("Removing images %s", imageList[imagesToKeep:])
err = r.imgDataTarget.Delete(imageList[imagesToKeep:]...)
}
return
}
// GetImageID returns the image name for the given parameters
func GetImageID(options *flags.Options, version int) (name string) {
options.Release = removeDot(options.Release)
imageNamePrefix := imgTemplate(options)
finalVersion := strconv.Itoa(version)
// The numeric version makes sense for system-image based images, on all-snaps
// the version of the image, if any, should be determined by the versions of
// the snaps that form it. For the time being we assume by convention that
// version == 0 means all-snaps, and we replace it by a timestamp so that we are
// able to sort images by date
if version == 0 {
finalVersion = time.Now().Format("20060102150405.000000")
}
return fmt.Sprintf("%s-%s-%s", imageNamePrefix, finalVersion, imageNameSufix)
}