signal-application-python-sdk 3.2.1

signal application services

signal-application-python-sdk

Setup

Add Signal-Application-SDK as a dependency to requirements.txt

signal-application-python-sdk==<latest>

Install dependencies

python setup.py install

Entry point for Signal Application SDK

• Creates a bi-directional communication between device agent and application

Initialize SDK

from signalsdk.signal_app import SignalApp
app = SignalApp()
app.initialize(onConfigUpdated, onEventReceived, onCommandReceived)

Provide a callback method to get notified when a configuration change is requested

def onConfigUpdated(self, config):

• Will be triggered when a new configuration change requested from the cloud

Provide a callback method to get notified when an event is received from event bus

def onEventReceived(self, event):

• Will be triggered when a new event received from application's subscribed topic

Provide a callback method to get notified when an command is received from event bus

def onCommandReceived(self, command):

• Will be triggered when a new command received from device agent

Call next to forward the event to the next edgesignal application which has sdk integrated, if next_app_id(optional) is specified, it forwards the event to the specified application

self.app.next(event: object, next_app_id)

Call next to forward the event to the next node-red application running on node-red.

self.app.nextNode(event: object)

Sample usage

Consider adding these two params to the application detail

config object will be reveived as below

{
    message: 'some text message',
    param2: 101
}