+
+
+def send_socket_command(host, port, command):
+ """Send a string command to a specific port in a host
+
+ :param host: (str) ip or hostname of the host
+ :param port: (int) port number
+ :param command: (str) command to send
+ :return: 0 if success, error number if error
+ """
+ sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+ ret = 0
+ try:
+ err_number = sock.connect_ex((host, int(port)))
+ if err_number != 0:
+ return err_number
+ sock.sendall(six.b(command))
+ except Exception: # pylint: disable=broad-except
+ ret = 1
+ finally:
+ sock.close()
+ return ret
+
+
+def safe_cast(value, type_to_convert, default_value):
+ """Convert value to type, in case of error return default_value
+
+ :param value: value to convert
+ :param type_to_convert: type to convert, could be "type" or "string"
+ :param default_value: default value to return
+ :return: converted value or default_value
+ """
+ if isinstance(type_to_convert, type):
+ _type = type_to_convert
+ else:
+ _type = pydoc.locate(type_to_convert)
+ if not _type:
+ raise exceptions.InvalidType(type_to_convert=type_to_convert)
+
+ try:
+ return _type(value)
+ except ValueError:
+ return default_value