func addImagesub(imageSClient *srpc.Client,
objectClient *objectclient.ObjectClient,
name, subName, filterFilename, triggersFilename string) error {
imageExists, err := client.CheckImage(imageSClient, name)
if err != nil {
return errors.New("error checking for image existance: " + err.Error())
}
if imageExists {
return errors.New("image exists")
}
newImage := new(image.Image)
if err := loadImageFiles(newImage, objectClient, filterFilename,
triggersFilename); err != nil {
return err
}
fs, err := pollImage(subName)
if err != nil {
return err
}
if fs, err = applyDeleteFilter(fs); err != nil {
return err
}
fs = fs.Filter(newImage.Filter)
if err := spliceComputedFiles(fs); err != nil {
return err
}
if err := copyMissingObjects(fs, imageSClient, objectClient,
subName); err != nil {
return err
}
newImage.FileSystem = fs
return addImage(imageSClient, name, newImage)
}
func (imdb *ImageDataBase) loadFile(filename string, logger *log.Logger) error {
pathname := path.Join(imdb.baseDir, filename)
file, err := os.Open(pathname)
if err != nil {
return err
}
defer file.Close()
reader := fsutil.NewChecksumReader(file)
decoder := gob.NewDecoder(reader)
var image image.Image
if err := decoder.Decode(&image); err != nil {
return err
}
if err := reader.VerifyChecksum(); err != nil {
if err == fsutil.ErrorChecksumMismatch {
logger.Printf("Checksum mismatch for image: %s\n", filename)
return nil
}
if err != io.EOF {
return err
}
}
image.FileSystem.RebuildInodePointers()
if err := image.Verify(); err != nil {
return err
}
imdb.Lock()
defer imdb.Unlock()
if imdb.scheduleExpiration(&image, filename) {
imdb.logger.Printf("Deleting already expired image: %s\n", filename)
return os.Remove(pathname)
}
imdb.imageMap[filename] = &image
return nil
}
func loadTriggers(image *image.Image, triggersFilename string) error {
triggersFile, err := os.Open(triggersFilename)
if err != nil {
return err
}
defer triggersFile.Close()
decoder := json.NewDecoder(triggersFile)
var trig triggers.Triggers
if err = decoder.Decode(&trig.Triggers); err != nil {
return errors.New("error decoding triggers " + err.Error())
}
image.Triggers = &trig
return nil
}
func (imdb *ImageDataBase) addImage(image *image.Image, name string,
username *string) error {
if err := image.Verify(); err != nil {
return err
}
imdb.Lock()
defer imdb.Unlock()
if imdb.scheduleExpiration(image, name) {
imdb.logger.Printf("Ignoring already expired image: %s\n", name)
return nil
}
if _, ok := imdb.imageMap[name]; ok {
return errors.New("image: " + name + " already exists")
} else {
err := imdb.checkDirectoryPermissions(path.Dir(name), username)
if err != nil {
return err
}
filename := path.Join(imdb.baseDir, name)
file, err := os.OpenFile(filename, os.O_CREATE|os.O_EXCL|os.O_RDWR,
filePerms)
if err != nil {
if os.IsExist(err) {
return errors.New("cannot add a previously deleted image")
}
return err
}
defer file.Close()
w := bufio.NewWriter(file)
defer w.Flush()
writer := fsutil.NewChecksumWriter(w)
defer writer.WriteChecksum()
encoder := gob.NewEncoder(writer)
encoder.Encode(image)
imdb.imageMap[name] = image
imdb.addNotifiers.sendPlain(name, "add", imdb.logger)
return nil
}
}
func addImage(imageSClient *srpc.Client, name string, img *image.Image) error {
if *expiresIn > 0 {
img.ExpiresAt = time.Now().Add(*expiresIn)
} else {
img.ExpiresAt = time.Time{}
}
if err := img.Verify(); err != nil {
return err
}
if err := img.VerifyRequiredPaths(requiredPaths); err != nil {
return err
}
if err := client.AddImage(imageSClient, name, img); err != nil {
return errors.New("remote error: " + err.Error())
}
return nil
}