def upload_from_file(self, src, tar):
'''upload a file to data lake
src : source file path
tar : target file path, in data lake.
'''
try:
if self.on_cloud:
GCS.upload_blob(self.bucket, src, tar)
else:
file_path = join(self.local_dir, tar)
copy(src, file_path)
except Exception as e:
print('DataLakeConnector.upload_from_file(), error: {}'.format(e))
