How to integrate Azure IOT Hub with Ionic Mobile app? - azure

Question

I need to implement Notifications in my Ionic Application for Android. For that we have set up Azure IOT Hub where the device should get registered and from there, we can send messages to the device and vice versa (from the device to the cloud).
Now, I have gone through lots of links in the google regarding plugins for azure in Ionic, i tried them but in vain. I need to do two things
Register the device ID with the Azure IOT Hub
Send Notification in the Azure IOT Hub using that device ID, so that I can receive it in the device.
I have gone through
https://github.com/Azure/azure-iot-sdk-node
https://github.com/derek82511/cordova-azure-notification-hubs
None of them helped me to register device to the IOT Hub. Can some one guide me in the right direction. I need to know the process how to connect the Azure IOT Hub with my Ionic mobile app for Android.
Code:
var iothub = require('azure-iothub');
var connectionString = config.hubConnectionString;
var registry = iothub.Registry.fromConnectionString(connectionString);
// Create a new device
var device = {
deviceId: uuid
};
registry.create(device, function(err, deviceInfo, res) {
if (err) {
console.log( ' error: ' + err.toString());
this.showAlert('Create Device Error',err.toString());
}
if (res) {
console.log(' status: ' + res.statusCode + ' ' + res.statusMessage);
this.showAlert('Create Device Success Response',`status: ${res.statusCode} ${res.statusMessage}`);
}
if (deviceInfo) {
console.log(' device info: ' + JSON.stringify(deviceInfo));
this.showAlert('Device Info',JSON.stringify(deviceInfo));
}
});
//var clientFromConnectionString = require('azure-iot-device-http').clientFromConnectionString;
//var Message = require('azure-iot-device').Message;
var connectionString = config.hubConnectionString;
var client = clientFromConnectionString(connectionString);
var connectCallback = function (err) {
if (err) {
console.error('Could not connect: ' + err);
this.showAlert('HTTP Connection Error',err.toString());
} else {
console.log('Client connected');
var message = new Message('some data from my device');
client.sendEvent(message, function (err) {
if (err) {
console.log(err.toString());
this.showAlert('HTTP Send IOT Message Error',err.toString());
}
});
client.on('message', function (msg) {
console.log(msg);
this.showAlert('IOT Received Message',msg);
client.complete(msg, function () {
console.log('completed');
});
});
}
};
client.open(connectCallback);

Answer 1

You need to use the IoT Hub Service SDK: https://www.npmjs.com/package/azure-iothub
This example is from that link and shows how to use the device registry to create a new device.
var iothub = require('azure-iothub');
var connectionString = '[IoT Connection String]';
var registry = iothub.Registry.fromConnectionString(connectionString);
// Create a new device
var device = {
deviceId: 'sample-device-' + Date.now()
};
registry.create(device, function(err, deviceInfo, res) {
if (err) console.log('error: ' + err.toString());
if (res) console.log('status: ' + res.statusCode + ' ' + res.statusMessage);
if (deviceInfo) console.log('device info: ' + JSON.stringify(deviceInfo));
});