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Weapons grade MQTT client.

Project description

The haka_mqtt package is reliable “weapons grade” MQTT client library. It contains a core mqtt reactor class built with provable reliability, and reproducibility as its fundamental goals. A side effect is that the library turns out to be speedy as well.

Status

The project’s core reactor is stable. It has been tested on systems with thousands of distributed nodes in difficult field conditions.

Installation

The haka-mqtt package can be from pypi.org with pip:

pip install haka-mqtt

Usage

A quick example of how the package can be used:

# Standard python Packages
import logging

# 3rd-Party Packages
from haka_mqtt.frontends.poll import (
    MqttPollClientProperties,
    BlockingMqttClient
)
from haka_mqtt.reactor import ACTIVE_STATES
from mqtt_codec.packet import MqttTopic

LOG_FMT='%(asctime)s %(name)s %(levelname)s %(message)s'
logging.basicConfig(format=LOG_FMT, level=logging.INFO)

properties = MqttPollClientProperties()
properties.host = 'test.mosquitto.org'
properties.port = 1883
properties.ssl = False

TOPIC = 'haka'

c = BlockingMqttClient(properties)
c.start()
sub_ticket = c.subscribe([MqttTopic(TOPIC, 1)])
c.on_suback = lambda c, suback: c.publish(TOPIC, 'payload', 1)
c.on_publish = lambda c, publish: c.stop()

while c.state in ACTIVE_STATES:
    c.poll(5.)

Project Infrastructure

The project is coordinated through public infrastructure available at several places:

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