README.md

Manuh x MQTT bridge

This project creates a bridge between topics on Manuh (client-side pub/sub interface) with MQTT (server pub/sub iterface)

How to use

1. Install this package on your project

   npm install --save manuh-bridge

2. Then use it as follows:

   const manuh = require('manuh');
   const { ManuhBridge } = require('manuh-bridge');
   const mqtt = require('mqtt');
   
   // Configure MQTT connection
   const mqttConfig = { protocol: 'wss', host: 'iot.eclipse.org', port: 443, context: 'ws' };
   
   // Create of ManuhBridge
   const manuhBridge = new ManuhBridge(manuh, mqttConfig, () => {
       console.log('Manuh Bridge connected!');
       //Sign bridged topics when MQTT is connected
       manuhBridge.subscribeRemote2LocalTopics([ 'door/status/set' ]);
       manuhBridge.subscribeLocal2RemoteTopics([ 'window/status/set' ]);        
   
       // Subscribe Manuh Topic
       manuh.subscribe('door/status/set', 'door', function(msg, info){
           message = JSON.parse(msg);
           console.log('Received message on Manuh topic', JSON.stringify(message));
   
           if(message.message == "Hi!"){
               //Publish package on Manuh Topic
               let package = { message:'Hello!', topicToRespond:'' }
               manuh.publish(message.topicToRespond, JSON.stringify(package), { retained: false });
               console.log('Publish message on Manuh topic', JSON.stringify(package));
           }
       });
   
       //Start MQTT Client
       start();
   });
   
   function start() {
       // Connect to MQTT broker
       const clientMqtt = mqtt.connect('wss://iot.eclipse.org/ws');
   
       // On Connected MQTT
       clientMqtt.on('connect', function () {
       // Subscribe MQTT Topic
       clientMqtt.subscribe('window/status/set');
   
       // Publish MQTT Topic
       let message = { message:'Hi!', topicToRespond: 'window/status/set' };
       clientMqtt.publish('door/status/set', JSON.stringify(message));
       console.log('Publish Message on MQTT Topic', JSON.stringify(message));
       });
   
       // On Message Received on MQTT Topic
       clientMqtt.on('message', function (topic, message) {
       console.log('Received Message by MQTT');
       console.log('Topic: ', topic);
       console.log('Message:', JSON.parse(message.toString()));
       clientMqtt.end();
       });
   }