Basic server listening to fiware orion ContextBroker suscriptions

app.js

var express = require('express');
var bodyParser = require('body-parser');
var app = express();

app.use(bodyParser.json());

app.post('/temperature', function(req, res) {
    var value = req.body.contextResponses[0].contextElement.attributes[0].value;
    console.log("temperature updated at " + new Date());
    console.log("value: " + value);
    res.send("OK");
});
app.post('/humidity', function(req, res) {
    var value = req.body.contextResponses[0].contextElement.attributes[0].value;
    console.log("humidity updated at " + new Date());
    console.log("value: " + value);
    res.send("OK");
});
app.post('/luminance', function(req, res) {
    var value = req.body.contextResponses[0].contextElement.attributes[0].value;
    console.log("luminance updated at " + new Date());
    console.log("value: " + value);
    res.send("OK");
});

var server = app.listen(4000, function() {
    var host = server.address().address;
    var port = server.address().port;

    console.log('app listening at http://%s:%s', host, port);
});