@applica-software-guru/drax-sdk

drax-sdk

This package allows interfacing to the Drax IoT platform (https://draxcloud.com/) To use this plugin you need to create a project on the platform. After project creation you must use API_KEY and API_SECRET of project to:

• publish state on node;
• listen the node configuration;

Installation

To install the package you need to run the following command:

$ npm install @applica-software-guru/drax-sdk

Usage

Before use methods of sdk you need to do create a configuration file (config.json) with this structure:

{
    "draxPublicKey": "DRAX_PUB_KEY",
    "project":{
        "id": "PROJECT_ID",
        "apiKey": "PROJECT_API_KEY",
        "apiSecret": "PROJECT_API_SECRET"
    },
    "keys": [
        {
            "nodeId": "NODE_ID",
            "privateKey": "NODE_PRIVATE_KEY"
            "publicKey": "NODE_PUBLIC_KEY"
        }

    ]
}

DRAX_PUB_KEY is the cloud public key for ECDH algorithm. Default is: "bb099d6dce1a953c7c5d2380815ee02ea191b39206000000ceefb3c222b480459556ce440379cef89db0ccfc04000000" PROJECT_ID, PROJECT_API_KEY, PROJECT_API_SECRET is the id of project you get after Project creation on Drax. "keys" is an array of private keys associated with nodes created on drax. After node creation, Drax return NODE_PUBLIC_KEY and NODE_PRIVATE_KEY. It needs to be stored in a Keystore.

Example

const { Drax } = require("@applica-software-guru/drax-sdk");
const { Keystore } = require("@applica-software-guru/drax-sdk/keystore");
const config = require("./config.json");
const { HTSensor } = require("./listeners/htsensor");
const { Rele } = require("./listeners/rele");
const { Trv } = require("./listeners/trv");
new Keystore().instance().addConfig(config);

var params = {
  host: null,
  port: null,
  vhost: null,
  config,
};

var trv = new Trv();
var rele = new Rele();
var htsensor = new HTSensor();

var listeners = [trv, rele, htsensor];

var drax = new Drax(params);
drax
  .start()
  .then(() => {
    var state = { dato: "Hello World!" };
    drax.setState(3393, "homematicip:gateway:test", state, false);

    drax.addConfigurationListener("configurations/homematicip", listeners);
  })
  .catch((e) => {});

To create Drax object you need to load the correct parameters. The properties of the parameters are the following:

Parameter	Description	Default
host	Is the address of AMQP broker	amqp://35.205.187.28
port	Port of AMQP broker	5672
vhost	vhost of AMQP broker	"/"
config	configuration file

Future improvements

The next release would have setConfiguration and StateLister.