matrix-io-malos 0.2.1

MATRIX Labs MALOS libraries

============================
MATRIXIO Python MALOS Driver
============================
A simple `Python`_ coroutine based driver for communicating with `MATRIX-MALOS services`_.

License
=======

This application follows the GNU General Public License, as described in the ``LICENSE`` file.

Installing
==========

The package is available on PyPI, so you can easily install via pip:

.. code-block:: console

$ pip install matrix-io-malos


Running the CLI client
======================

The library includes a simple command line client to start reading data from
your MALOS service right away.

.. code-block:: console

# Get the malosclient help screen
$ malosclient --help

# Get IMU data to STDOUT from a locally running MALOS service
$ malosclient IMU

# Get HUMIDITY data to STDOUT from a remotely running MALOS service
$ malosclient -h 192.168.0.100 HUMIDITY

# Get FACE detection data using a serialized driver config file
$ malosclient --driver-config-file ~/driver_config.proto VISION


Using the MalosDriver
=====================

To use the MALOS driver works as an async generator so in your code
you can do the following:

.. code-block:: python

import asyncio
import sys

from matrix_io.malos.driver import IMU_PORT, UV_PORT
from matrix_io.proto.malos.v1 import driver_pb2
from matrix_io.proto.malos.v1 import sense_pb2

from matrix_io.malos.driver import MalosDriver


async def imu_data(imu_driver):
async for msg in imu_driver.get_data():
print(sense_pb2.Imu().FromString(msg))
await asyncio.sleep(1.0)


async def uv_data(uv_driver):
async for msg in uv_driver.get_data():
print(sense_pb2.UV().FromString(msg))
await asyncio.sleep(1.0)


async def status_handler(driver):

type_mapping = {
driver_pb2.Status.NOT_DEFINED: "Not Defined",
driver_pb2.Status.STARTED: "Started",
driver_pb2.Status.CONFIG_RECEIVED: "Config Received",
driver_pb2.Status.COMMAND_EXECUTED: "Command Executed",
driver_pb2.Status.ERROR: "Error",
driver_pb2.Status.WARNING: "Warning"
}

async for msg in driver.get_status():
print(type_mapping[msg.type])

if msg.uuid:
print("UUID: {}".format(msg.uuid))
if msg.message:
print("MESSAGE: {}".format(msg.message))

await asyncio.sleep(1.0)


# Driver configuration
driver_config = driver_pb2.DriverConfig()

# Create the drivers
imu_driver = MalosDriver('localhost', IMU_PORT)
uv_driver = MalosDriver('localhost', UV_PORT)
imu_driver.configure(driver_config)
uv_driver.configure(driver_config)

# Create loop and initialize keep-alive
loop = asyncio.get_event_loop()
loop.create_task(imu_driver.start_keep_alive())
loop.create_task(uv_driver.start_keep_alive())

# Initialize data and error handlers
loop.create_task(imu_data(imu_driver))
loop.create_task(uv_data(uv_driver))
loop.create_task(status_handler(imu_driver))
loop.create_task(status_handler(uv_driver))

try:
loop.run_forever()
except KeyboardInterrupt:
print('Shutting down. Bye, bye !', file=sys.stderr)
finally:
loop.stop()
asyncio.gather(*asyncio.Task.all_tasks()).cancel()

loop.run_until_complete(loop.shutdown_asyncgens())
loop.close()

Who can answer questions about this library?
============================================

- Heitor Silva <[e-mail]>
- Maciej Ruckgaber <[e-mail]>

More Documentation
==================

.. toctree::
:titlesonly:

CHANGELOG

.. _0MQ: http://zeromq.org/
.. _Python: https://www.python.org/
.. _virtualenv: https://virtualenv.pypa.io/en/stable/
.. _matrixio-protos-0.0.25: https://pypi.org/project/matrix-io-proto
.. _pypi: https://pypi.org/
.. _MATRIX-MALOS services: https://matrix-io.github.io/matrix-documentation/matrix-core/getting-started/understanding-core/