aiospb 5.0.3

Library to comunicate with MQTT following Sparkplug B estandard

Async Sparkplug B

Asyncronous implementation in python of the Sparkplug B standard for MQTT protocol

Test and Deploy

In the cicd directory you have scripts for helping the test of the library. It is necessary to have docker-compose and docker installed to run locally a Mqtt Broker and run integration and acceptance tests.

• run-all-tests.sh: Run all the tests
• setup-environment.sh: Open a mosquitto MQTT broker in a container to develop the test. It will clear all active containers.
• teardown-environment.sh: Close environment of testing (only the affected)

Architecture

The application runs asyncronously some tasks:

• scanner: runs the scanning proccess of the metrics.
• commands: listen to commands and

Edge Node

The edge node has been implemented under a state machine pattern. These are the states and transitions of edge node objects:

1. Disconnected: Initial state, until the client has not established a session and it is not connected to mqtt server, the scanning process is not started. If the client establish a session but conne
   • establish_session: kj fskkk
2. Online: The edge node is scanning and sending messages to
   • lost_mqtt_server_connection: transition to Offline state.
3. Offline: The edge node is scanning and trying to connect to Host mqtt server.
   • connected_to_mqtt_server: transition to Online
   • ``

4 bridge

The host bridge is not really a host application in the sense of Sparkplug B specification. It is a component to be used by a host application. It helps to the REAL application to comunicate to the edge nodes:

• Recieving the messages from all nodes conected to broker, following a Observer pattern.
• Send writing metric requests (lets call `` from now).

The interface with this reponsability is really easy:

• observe_node
• send_command