# Copyright (c) 2021 Jeff Irion and contributors
#
# This file is part of the adb-shell package.
"""A base class for transports used to communicate with a device.
* :class:`BaseTransportAsync`
* :meth:`BaseTransportAsync.bulk_read`
* :meth:`BaseTransportAsync.bulk_write`
* :meth:`BaseTransportAsync.close`
* :meth:`BaseTransportAsync.connect`
"""
from abc import ABC, abstractmethod
[docs]
class BaseTransportAsync(ABC):
"""A base transport class.
"""
[docs]
@abstractmethod
async def close(self):
"""Close the connection.
"""
[docs]
@abstractmethod
async def connect(self, transport_timeout_s):
"""Create a connection to the device.
Parameters
----------
transport_timeout_s : float, None
A connection timeout
"""
[docs]
@abstractmethod
async def bulk_read(self, numbytes, transport_timeout_s):
"""Read data from the device.
Parameters
----------
numbytes : int
The maximum amount of data to be received
transport_timeout_s : float, None
A timeout for the read operation
Returns
-------
bytes
The received data
"""
[docs]
@abstractmethod
async def bulk_write(self, data, transport_timeout_s):
"""Send data to the device.
Parameters
----------
data : bytes
The data to be sent
transport_timeout_s : float, None
A timeout for the write operation
Returns
-------
int
The number of bytes sent
"""