def file_sender(barrier, port, input_file):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(('', port))
sock.listen(1)
barrier.wait()
c, addr = sock.accept()
transferer = BlockingSocketTransferer(c)
transferer.send_file(input_file)
transferer.close()
def __handle_client_connection(client_sock, backup_no: int):
"""
Read message from a specific client socket and closes the socket
If a problem arises in the communication with the client, the
client socket will also be closed
"""
socket_transferer = BlockingSocketTransferer(client_sock)
try:
msg = socket_transferer.receive_plain_text()
msg = json.loads(msg)
path, previous_checksum = msg['path'], msg['checksum']
SidecarProcess.logger.debug("Previous checksum for path %s is '%s'" % (path, previous_checksum))
except (OSError, TimeoutError) as e:
SidecarProcess.logger.exception("Error while reading socket %s: %s" % (client_sock, e))
socket_transferer.abort()
return
try:
backup_file = BackupFile.create_from_path(path, TMP_BACKUP_PATH % backup_no)
except Exception:
SidecarProcess.logger.exception("Error while making backup file")
socket_transferer.abort()
return
file_checksum = backup_file.get_hash()
if file_checksum == previous_checksum:
SidecarProcess.logger.info("Previous checksum equals to actual data, skipping backup")
socket_transferer.send_plain_text("SAME")
socket_transferer.abort()
return
else:
socket_transferer.send_plain_text("DIFF")
try:
socket_transferer.send_file(TMP_BACKUP_PATH % backup_no)
SidecarProcess.logger.debug("Backup file sent")
socket_transferer.send_plain_text(file_checksum)
except Exception as e:
SidecarProcess.logger.exception("Error while writing socket %s: %s" % (client_sock, e))
socket_transferer.abort()
return
finally:
socket_transferer.close()
return