parse-http-api

// These two lines are required to initialize Express in Cloud Code.
express = require('express');
app = express();

// Set the required API key.
var apiKey = 'supersecretapikey';

// Global app configuration section
app.use(express.bodyParser());    // Middleware for reading request body

// This is an example of hooking up a request handler with a specific request
// path and HTTP verb using the Express routing API.
app.post('/sensor', function(req, res) {

	// Get the request variables.  
	var requestApiKey = req.headers['x-parse-rest-api-key']; 	
	var identifier = req.body.identifier;
	var state = req.body.state;
	
	// Check the API key.
	if (requestApiKey === undefined || requestApiKey !== apiKey) {
		res.status(401).send({error:"Missing or incorrect API-key."});
		return;
	}

	// Validate the identifier.
	if (identifier === undefined || identifier.length <= 0 || typeof identifier !== "string") {
		res.status(400).send({error:"Identifier missing or not a valid string."});
		return;
	}

	// Validate the state.
	if (state === undefined || typeof state !== "boolean") {
		res.status(400).send({error:"State missing or not a boolean."});
		return;
	}

	// Convert the identifier to lowercase.
	identifier = identifier.toLowerCase();

	// Create the Sensor and Log object.
	var Sensor = Parse.Object.extend("Sensor");
	var Log = Parse.Object.extend("Log");
	
	// Look up the sensor object in the Sensor table.
	var query = new Parse.Query(Sensor);
	query.equalTo("identifier", identifier);
	query.first({
		success: function(sensor) {
			
			// If the Sensor for the requested identifier is not found. Create a new object.
			if (!sensor) {
				var sensor = new Sensor();
				sensor.set('identifier', identifier);
			}
			
			// Set the requested state for the sensor.
			sensor.set('state', state);

			// Save the (new) sensor with updated state.
			sensor.save(null, {
				success: function (sensor) {

					// If saving finished, create a new log object with a pointer to the sensor.
					var log = new Log();
					log.set('sensor', sensor);
					log.set('identifier', identifier);
					log.set('state', state);
					log.save(null, {
						success: function (log) {
							// Everything ok. Report back to the client.
							res.send({success:true, identifier:identifier, state:state});
						},

						error: function (error) {
							// Error saving the log. Report error to client.
							res.status(400).send({error:"Log save error: " + error.code + " " + error.message});
						}
					});

				},
				error: function (error) {
					// Error saving the sensor object. Report error to client.
					res.status(400).send({error:"Sensor save error: " + error.code + " " + error.message});
				}
			});



		},
		error: function(error) {

			// Error performing the initial query. Report error to client.
			res.status(400).send({error:"Query error: " + error.code + " " + error.message});;
		}
	});

});

// Enable the express webserver. 
app.listen();