private void loadMetadata(DropboxFile file) {
Log.d(TAG, "Loading metadata for " + file.getRemoteFile());
DropboxAPI.Entry metadata = null;
try {
metadata = dropboxApi.metadata(file.getRemoteFile(), 0, null, false, null);
} catch (DropboxServerException se) {
if (se.error == DropboxServerException._404_NOT_FOUND) {
Log.d(TAG, "metadata NOT found! Returning NOT_FOUND status.");
file.setStatus(DropboxFileStatus.NOT_FOUND);
return;
}
throw new RemoteException("Server Exception: " + se.error + " " + se.reason, se);
} catch (DropboxException e) {
throw new RemoteException("Dropbox Exception: " + e.getMessage(), e);
}
Log.d(TAG, "Metadata retrieved. rev on Dropbox = " + metadata.rev);
Log.d(TAG, "local rev = " + file.getOriginalRev());
file.setLoadedMetadata(metadata);
if (metadata.rev.equals(file.getOriginalRev())) {
// don't bother downloading if the rev is the same
Log.d(TAG, "revs match. returning NOT_CHANGED status.");
file.setStatus(DropboxFileStatus.NOT_CHANGED);
} else if (metadata.isDeleted) {
Log.d(TAG, "File marked as deleted on Dropbox! Returning NOT_FOUND status.");
file.setStatus(DropboxFileStatus.NOT_FOUND);
} else {
Log.d(TAG, "revs don't match. returning FOUND status.");
file.setStatus(DropboxFileStatus.FOUND);
}
}
public void pullFiles() {
status = DropboxFileStatus.STARTED;
Log.d(TAG, "pullFiles started");
// load each metadata
for (DropboxFile file : files) {
loadMetadata(file);
}
// load each file with a newer rev
for (DropboxFile file : files) {
if (file.getStatus() == DropboxFileStatus.FOUND) {
loadFile(file);
}
}
status = DropboxFileStatus.SUCCESS;
}
private void loadFile(DropboxFile file) {
Log.d(TAG, "Downloading " + file.getRemoteFile() + " at rev = " + file.getLoadedMetadata().rev);
File localFile = file.getLocalFile();
try {
if (!localFile.exists()) {
Util.createParentDirectory(localFile);
localFile.createNewFile();
}
} catch (IOException e) {
throw new RemoteException("Failed to ensure that file exists", e);
}
FileOutputStream outputStream = null;
try {
outputStream = new FileOutputStream(localFile);
} catch (FileNotFoundException e1) {
throw new RemoteException("Failed to find file", e1);
}
try {
dropboxApi.getFile(file.getRemoteFile(), file.getLoadedMetadata().rev, outputStream, null);
outputStream.flush();
outputStream.close();
} catch (DropboxException e) {
throw new RemoteException("Cannot get file from Dropbox", e);
} catch (IOException e) {
throw new RemoteException("Failed to find file", e);
}
Log.d(TAG, "Download successful. Returning status SUCCESS");
file.setStatus(DropboxFileStatus.SUCCESS);
}
