/**
* Listenet, that invoked during file upload process. Only registered users can upload images.
*
* @param event - event, indicated that file upload started
*/
@Restrict("#{s:hasRole('admin')}")
public void listener(UploadEvent event) {
UploadItem item = event.getUploadItem();
// Construct image from item
Image image = constructImage(item);
try {
// Extract metadata(size, camera model etc..)
extractMetadata(item, image);
} catch (Exception e1) {
addError(item, image, Constants.FILE_PROCESSING_ERROR);
return;
}
image.setAlbum(model.getSelectedAlbum());
if (image.getAlbum() == null) {
addError(item, image, Constants.NO_ALBUM_TO_DOWNLOAD_ERROR);
return;
}
try {
// Check if image with given name already exist
if (imageAction.isImageWithThisPathExist(image.getAlbum(), image.getPath())) {
// If exist generate new path for image
String newPath = generateNewPath(image);
image.setPath(newPath);
image.setName(newPath);
}
// Save to database
imageAction.addImage(image);
} catch (Exception e) {
addError(item, image, Constants.IMAGE_SAVING_ERROR);
return;
}
// Save to disk
if (!fileManager.addImage(image.getFullPath(), item.getFile().getPath())) {
addError(item, image, Constants.FILE_SAVE_ERROR);
return;
}
// Prepare to show in UI
fileWrapper.getFiles().add(image);
Events.instance().raiseEvent(Constants.IMAGE_ADDED_EVENT, image);
// Delete temporary file
item.getFile().delete();
}
private void extractMetadata(UploadItem item, Image image) {
InputStream in = null;
try {
in = new FileInputStream(item.getFile());
Metadata metadata = JpegMetadataReader.readMetadata(in);
Directory exifDirectory = metadata.getDirectory(ExifDirectory.class);
Directory jpgDirectory = metadata.getDirectory(JpegDirectory.class);
setupCameraModel(image, exifDirectory);
setupDimensions(image, exifDirectory, jpgDirectory);
setupCreatedDate(image, exifDirectory);
} catch (Exception e) {
addError(item, image, Constants.IMAGE_SAVING_ERROR);
} finally {
try {
in.close();
} catch (IOException e) {
addError(item, image, Constants.IMAGE_SAVING_ERROR);
}
}
}
private void addError(UploadItem item, Image image, String error) {
fileWrapper.onFileUploadError(image, error);
item.getFile().delete();
}