nodered-embedded.js

/*jshint devel: true, node: true*/
​
/**
  * Start an embedded Node-Red instance
  */
​
var http    = require('http'),
    express = require("express"),
    path    = require("path"),
 _ = require("lodash"),
    RED    = require("node-red"),
 fs = require("fs"),
 lame = require("lame"),
 Speaker = require("speaker")
;
​
// Config vars - NB: LAN details are LOCAL. If accessing from the WAN (Internet), use the WAN details instead
var mqttSrv    = '192.168.1.167',  // The LAN address for the MQTT server
    mqttWsPort = '9001',          // The LAN port for the websocket interface to the MQTT server
    nrSrv      = '192.168.1.167',  // The LAN address for this Node-Red server
    nrPort    = '8000'            // The LAN port for this systems web interface
;
var wanMqttSrv    = '192.168.1.167',  // The WAN address for the MQTT server
    wanMqttWsPort = '9001',          // The WAN port for the websocket interface to the MQTT server
    wanNrSrv      = '192.168.1.167',  // The WAN address for this Node-Red server
    wanNrPort    = '8000'            // The WAN port for this systems web interface
;
​
// Create an Express app
var app = express();
​
// Add a simple route for static content served from 'public'
app.use("/", express.static("public"));
​
// Add static route for bower components
app.use('/bower_components', express.static( path.join(__dirname, '/bower_components') ) );
​
// Create a server
var httpServer = http.createServer(app);
​
// Create the settings object - see default settings.js file for other options
var nrSettings = {
    httpAdminRoot: "/red",                // Access the admin web i/f from http://<nrSrv>/red
    httpNodeRoot: "/",                    // Access other NR served pages from http://<nrSrv>/
    userDir: path.join(__dirname, '.nodered'),  // default: $HOME/.node-red
    nodesDir: path.join(__dirname, 'nodes'),    // adds extra locn, defaults are userDir/nodes & node-red/nodes
    verbose: true,                        // For better debugging
    debugMaxLength: 1000,                // max length of debug output
    paletteCategories: [
        'subflows', 'input', 'output', 'function', 'storage', 'advanced', 'formats', 'Raspberry Pi', 'social', 'analysis'
    ],
    functionGlobalContext: {        // enables global context
        // os:require('os'),
        // arduino:require('duino') // directly control Arduino's over serial, https://www.npmjs.com/package/duino
        // -- Pass config variables into NR for reference -- //
        'mqttSrv'      : mqttSrv,
        'mqttWsPort'    : mqttWsPort,
        'nrSrv'        : nrSrv,
        'nrPort'        : nrPort,
        'wanMqttSrv'    : wanMqttSrv,
        'wanMqttWsPort' : wanMqttWsPort,
        'wanNrSrv'      : wanNrSrv,
        'wanNrPort'    : wanNrPort,
        // Pass in the path library for cross-platform file system specs
        'path'          : path,
 'fs' : fs,
 '_' : _,
 'lame' : lame,
 'Speaker' : Speaker
    }
    //httpStatic: '/home/pi/node/nr/static', // only for standalone NR
};
​
// Initialise the runtime with a server and settings
RED.init(httpServer, nrSettings);
​
// Serve the editor UI from /red
app.use(nrSettings.httpAdminRoot, RED.httpAdmin);
​
// Serve the http nodes UI from /
app.use(nrSettings.httpNodeRoot, RED.httpNode);
​
httpServer.listen(8000);
​
// Start the runtime
RED.start();
​