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server.js
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#!/bin/env node
var http = require('http');
var express = require("express");
var RED = require("node-red");
var atob = require('atob');
var MyRed = function() {
// Scope.
var self = this;
/* ================================================================ */
/* Helper functions. */
/* ================================================================ */
/**
* Set up server IP address and port # using env variables/defaults.
*/
self.setupVariables = function() {
// Set the environment variables we need.
self.ipaddress = process.env.OPENSHIFT_NODEJS_IP;
self.port = process.env.OPENSHIFT_NODEJS_PORT || 8000;
if (typeof self.ipaddress === "undefined") {
// Log errors on OpenShift but continue w/ 127.0.0.1 - this
// allows us to run/test the app locally.
console.warn('No OPENSHIFT_NODEJS_IP var, using 127.0.0.1');
self.ipaddress = "127.0.0.1";
};
// Create the settings object
self.redSettings = {
httpAdminRoot:"/",
httpNodeRoot: "/api",
userDir: process.env.OPENSHIFT_DATA_DIR
};
if (typeof self.redSettings.userDir === "undefined") {
console.warn('No OPENSHIFT_DATA_DIR var, using ./');
self.redSettings.userDir = "./";
}
};
/**
* terminator === the termination handler
* Terminate server on receipt of the specified signal.
* @param {string} sig Signal to terminate on.
*/
self.terminator = function(sig){
if (typeof sig === "string") {
console.log('%s: Received %s - terminating app ...',
Date(Date.now()), sig);
RED.stop();
process.exit(1);
}
console.log('%s: Node server stopped.', Date(Date.now()) );
};
/**
* Setup termination handlers (for exit and a list of signals).
*/
self.setupTerminationHandlers = function(){
// Process on exit and signals.
process.on('exit', function() { self.terminator(); });
// Removed 'SIGPIPE' from the list - bugz 852598.
['SIGHUP', 'SIGINT', 'SIGQUIT', 'SIGILL', 'SIGTRAP', 'SIGABRT',
'SIGBUS', 'SIGFPE', 'SIGUSR1', 'SIGSEGV', 'SIGUSR2', 'SIGTERM'
].forEach(function(element, index, array) {
process.on(element, function() { self.terminator(element); });
});
};
/* ================================================================ */
/* App server functions (main app logic here). */
/* ================================================================ */
/**
* Create the routing table entries + handlers for the application.
*/
self.createRoutes = function() {
self.routes = { };
self.routes['/asciimo'] = function(req, res) {
var link = "http://i.imgur.com/kmbjB.png";
res.send("<html><body><img src='" + link + "'></body></html>");
};
};
/**
* Initialize the server (express) and create the routes and register
* the handlers.
*/
self.initializeServer = function() {
self.createRoutes();
// Create an Express app
self.app = express();
// Create a server
self.server = http.createServer(self.app);
//setup basic authentication
var basicAuth = require('basic-auth-connect');
self.app.use(basicAuth(function(user, pass) {
return user === 'test' && pass === atob('dGVzdA==');
}));
// Initialise the runtime with a server and settings
RED.init(self.server, self.redSettings);
console.log('%s is the userDir for RED', self.redSettings.userDir);
// Serve the editor UI from /red
self.app.use(self.redSettings.httpAdminRoot,RED.httpAdmin);
// Serve the http nodes UI from /api
self.app.use(self.redSettings.httpNodeRoot,RED.httpNode);
// Add a simple route for static content served from 'public'
//self.app.use("/",express.static("public"));
// Add handlers for the app (from the routes).
for (var r in self.routes) {
self.app.get(r, self.routes[r]);
}
};
/**
* Initializes the sample application.
*/
self.initialize = function() {
self.setupVariables();
self.setupTerminationHandlers();
// Create the express server and routes.
self.initializeServer();
};
/**
* Start the server (starts up the sample application).
*/
self.start = function() {
// Start the app on the specific interface (and port).
self.server.listen(self.port,self.ipaddress, function() {
console.log('%s: Node server started on %s:%d ...',
Date(Date.now() ), self.ipaddress, self.port);
});
// Start the runtime
RED.start();
};
}
/**
* main(): Main code.
*/
var red = new MyRed();
red.initialize();
red.start();