28 |
31 | Login
29 |Login page
30 |
37 |
38 | {{#if user}}
39 |
48 | Hello, {{user.displayName}}.
40 | {{else}} 41 |Welcome.
42 |Login or Register with:
43 | 44 | Facebook 45 | {{/if}} 46 | 47 |Display Message on WoT Pi
16 | 17 | 22 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /chapter3-node-js/listing-3.2-webserver.js: -------------------------------------------------------------------------------- 1 | var http = require("http"); 2 | var port = 8686; 3 | 4 | function randomInt (low, high) { 5 | return Math.floor(Math.random() * (high - low) + low); 6 | } 7 | 8 | http.createServer(function(req,res){ 9 | console.log('New incoming client request for ' + req.url); 10 | res.writeHeader(200, {'Content-Type': 'application/json'}); //#A 11 | switch(req.url) { //#B 12 | case '/temperature': 13 | // And return the corresponding JSON 14 | res.write('{"temperature" :' + randomInt(1, 40) + '}'); //#C 15 | break; 16 | case '/light': 17 | res.write('{"light" :' + randomInt(1, 100) + '}'); 18 | break; 19 | default: 20 | res.write('{"hello" : "world"}'); 21 | } 22 | res.end(); //#D 23 | }).listen(port); 24 | console.log('Server listening on http://localhost:' + port); 25 | 26 | //#A Setting the header to announce we return JSON representations 27 | //#B Read the request URL and provide responses accordingly 28 | //#C Write the temperature result as JSON 29 | //#D Causes to return the results to the client 30 | 31 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Building the Web of Things - Code 2 | This repository contains all the Node.js and JavaScript code examples from the [Building the Web of Things](http://book.webofthings.io) book. 3 | 4 | # Node version compatibility 5 | This code is meant to work with **Node 4.x** and will not work on newer Node version. You can find the 4.x releases on https://nodejs.org/en/download/releases/. We are working on a version that will support newer Node but it isn't quite ready yet. 6 | 7 | # Downloading the code examples 8 | 9 | Clone the repository recursively to ensure all the sub projects are downloaded: 10 | 11 | `git clone --recursive https://github.com/webofthings/wot-book.git` 12 | 13 | # What is the book about? 14 | The book is all about building apps for the Internet of Things using Web technologies. 15 | In more technical terms it is all about Node.js, JavaScript, HTTP, WebSockets for embedded devices! 16 | 17 |  18 | 19 | [Get Building the Web of Things!](http://book.webofthings.io) 20 | -------------------------------------------------------------------------------- /chapter7-implementation/part1-2-direct-gateway/public/websocketsClient.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | -------------------------------------------------------------------------------- /chapter9-sharing/social-auth/middleware/proxy.js: -------------------------------------------------------------------------------- 1 | var https = require('https'), 2 | fs = require('fs'), 3 | config = require('../config/acl.json').things[0], //#A 4 | httpProxy = require('http-proxy'); 5 | 6 | var proxyServer = httpProxy.createProxyServer({ //#B 7 | ssl: { 8 | key: fs.readFileSync('./config/change_me_privateKey.pem', 'utf8'), 9 | cert: fs.readFileSync('./config/change_me_caCert.pem', 'utf8'), 10 | passphrase: 'webofthings' 11 | }, 12 | secure: false //#C 13 | }); 14 | 15 | module.exports = function() { 16 | return function proxy(req, res, next) { 17 | req.headers['authorization'] = config.token; //#D 18 | proxyServer.web(req, res, {target: config.url}); //#E 19 | } 20 | }; 21 | 22 | //#A Load the Thing that can be proxied (there’s just one here) 23 | //#B Initialize the proxy server, making it an HTTPS proxy to ensure end-to-end encryption 24 | //#C Do not verify the certificate (true would refuse local certificate) 25 | //#D Proxy middleware function; add the secret token of the Thing 26 | //#E Proxy the request; notice that this middleware doesn’t call next() because it should be the last in the chain 27 | -------------------------------------------------------------------------------- /chapter9-sharing/social-auth/config/acl.json: -------------------------------------------------------------------------------- 1 | { 2 | "protected": [ 3 | { 4 | "uid": "facebook:1482479545406343", 5 | "resources": [ 6 | "/properties", "/properties/temperature", "/properties/humidity", "/properties/pir", "/leds/1", "/leds/2", "/actions/ledState" 7 | ] 8 | }, 9 | { 10 | "uid": "facebook:10104818212136076", 11 | "resources": [ 12 | "/properties", "/properties/temperature", "/properties/humidity", "/properties/pir", "/leds/1", "/leds/2", "/actions/ledState" 13 | ] 14 | }, 15 | { 16 | "uid": "facebook:10207489314897153", 17 | "resources": [ 18 | "/properties", "/properties/temperature", "/properties/humidity", "/properties/pir", "/leds/1", "/leds/2", "/actions/ledState" 19 | ] 20 | } 21 | ], 22 | "open": [ 23 | "/", "/model", "/account", "/login", "/logout", "/auth/facebook", "/auth/facebook/callback" 24 | ], 25 | "things": [ 26 | { 27 | "id": "WoTPi", 28 | "url": "https://127.0.0.1:8484", 29 | "token": "cKXRTaRylYWQiF3MICaKndG4WJMcVLFz" 30 | } 31 | ], 32 | "config": { 33 | "sourcePort" : 5050 34 | } 35 | } -------------------------------------------------------------------------------- /chapter7-implementation/part1-2-direct-gateway/resources/resources.json: -------------------------------------------------------------------------------- 1 | { 2 | "pi": { 3 | "name": "WoT Pi", 4 | "description": "A simple WoT-connected Raspberry PI for the WoT book.", 5 | "port": 8484, 6 | "sensors": { 7 | "temperature": { 8 | "name": "Temperature Sensor", 9 | "description": "An ambient temperature sensor.", 10 | "unit": "celsius", 11 | "value": 0, 12 | "gpio": 12 13 | }, 14 | "humidity": { 15 | "name": "Humidity Sensor", 16 | "description": "An ambient humidity sensor.", 17 | "unit": "%", 18 | "value": 0, 19 | "gpio": 12 20 | }, 21 | "pir": { 22 | "name": "Passive Infrared", 23 | "description": "A passive infrared sensor. When 'true' someone is present.", 24 | "value": true, 25 | "gpio": 17 26 | } 27 | }, 28 | "actuators": { 29 | "leds": { 30 | "1": { 31 | "name": "LED 1", 32 | "value": false, 33 | "gpio": 4 34 | }, 35 | "2": { 36 | "name": "LED 2", 37 | "value": false, 38 | "gpio": 9 39 | } 40 | } 41 | } 42 | } 43 | } -------------------------------------------------------------------------------- /chapter4-gpios/more-examples/proximity.py: -------------------------------------------------------------------------------- 1 | # Import Python header files 2 | import RPi.GPIO as GPIO 3 | import time 4 | 5 | # Set the GPIO naming convention 6 | GPIO.setmode(GPIO.BCM) 7 | GPIO.setwarnings(False) 8 | 9 | # Set a variable to hold the GPIO Pin identity 10 | PinPIR = 17 11 | 12 | print "PIR Module Test (CTRL-C to exit)" 13 | 14 | # Set pin as input 15 | GPIO.setup(PinPIR, GPIO.IN) 16 | 17 | # Variables to hold the current and last states 18 | Current_State = 0 19 | Previous_State = 0 20 | 21 | try: 22 | print "Waiting for PIR to settle ..." 23 | # Loop until PIR output is 0 24 | while GPIO.input(PinPIR)==1: 25 | Current_State = 0 26 | 27 | print " Ready" 28 | while True: 29 | # Read PIR state 30 | Current_State = GPIO.input(PinPIR) 31 | 32 | # If the PIR is triggered 33 | if Current_State==1 and Previous_State==0: 34 | print " Motion detected!" 35 | # Record previous state 36 | Previous_State=1 37 | 38 | # If the PIR has returned to ready state 39 | elif Current_State==0 and Previous_State==1: 40 | print " Ready" 41 | Previous_State = 0 42 | 43 | # Wait for 10 milliseconds 44 | time.sleep(0.01) 45 | 46 | except KeyboardInterrupt: 47 | print " Quit" 48 | 49 | # Reset GPIO settings 50 | GPIO.cleanup() -------------------------------------------------------------------------------- /chapter4-gpios/more-examples/blink-pi-gpio.js: -------------------------------------------------------------------------------- 1 | var gpio = require('pi-gpio'); //#A 2 | var pin = 7; 3 | 4 | function blink(outPin, frequency, status) { //#B 5 | gpio.write(outPin, status, function () { //#D 6 | console.log('Setting GPIO to: ' + status); 7 | setTimeout(function () { //#E 8 | status = (status + 1) % 2; 9 | blink(outPin, frequency, status); 10 | }, frequency); 11 | }); 12 | } 13 | 14 | process.on('SIGINT', function () { //#F 15 | gpio.write(pin, 0, function () { 16 | gpio.close(pin); //#G 17 | console.log('Bye, bye!'); 18 | process.exit(); 19 | }); 20 | }); 21 | 22 | gpio.open(pin, "output", function (err) { //#C 23 | if (err) exit(err); 24 | blink(pin, 2000,1); //#H 25 | }); 26 | 27 | // #A Importing the GPIO management library 28 | // #B A blink function with the pin to activate, the blinking frequency and the initial status as parameters 29 | // #C Initialize the pin in output mode, once this is ready the anonymous function will be called 30 | // #D Write the current status to the pin 31 | // #E Once the status has been written we set a timer to recursively call blink 32 | // #F Listen to the even triggered when the program is about the exit 33 | // #G Cleanly close the GPIO pin before exiting 34 | // #H Call the blink function for pin #7 with a blinking speed of 2 seconds 35 | -------------------------------------------------------------------------------- /chapter9-sharing/social-auth/authProxy.js: -------------------------------------------------------------------------------- 1 | var express = require('express'), 2 | https = require('https'), 3 | fs = require('fs'), 4 | bodyParser = require('body-parser'), 5 | cons = require('consolidate'), 6 | auth = require('./middleware/auth'), 7 | fb = require('./providers/facebook.js'), 8 | proxy = require('./middleware/proxy.js'), 9 | config = require('./config/acl.json').config; 10 | 11 | var key_file = './config/change_me_privateKey.pem'; 12 | var cert_file = './config/change_me_caCert.pem'; 13 | var passphrase = 'webofthings'; 14 | 15 | var tlsConfig = { 16 | key: fs.readFileSync(key_file), 17 | cert: fs.readFileSync(cert_file), 18 | passphrase: passphrase 19 | }; 20 | 21 | 22 | var app = express(); 23 | app.use(bodyParser.json()); 24 | app.use(auth.socialTokenAuth()); 25 | 26 | // configure Express 27 | app.set('views', __dirname + '/views'); 28 | app.use(express.static(__dirname + '/public')); 29 | 30 | app.engine('html', cons.handlebars); 31 | app.set('view engine', 'html'); 32 | 33 | // add the FB auth support and pages 34 | fb.setupFacebookAuth(app); 35 | app.use(proxy()); 36 | 37 | var httpServer = https.createServer(tlsConfig, app); 38 | httpServer.listen(config.sourcePort, function () { 39 | console.log('WoT Social Authentication Proxy started on port: %d', config.sourcePort); 40 | }); 41 | 42 | -------------------------------------------------------------------------------- /chapter7-implementation/part1-2-direct-gateway/servers/websockets.js: -------------------------------------------------------------------------------- 1 | var WebSocketServer = require('ws').Server, 2 | resources = require('./../resources/model'); 3 | 4 | exports.listen = function(server) { 5 | var wss = new WebSocketServer({server: server}); //#A 6 | console.info('WebSocket server started...'); 7 | wss.on('connection', function (ws) { //#B 8 | var url = ws.upgradeReq.url; 9 | console.info(url); 10 | try { 11 | Object.observe(selectResouce(url), function (changes) { //#C 12 | ws.send(JSON.stringify(changes[0].object), function () { 13 | }); 14 | }) 15 | } 16 | catch (e) { //#D 17 | console.log('Unable to observe %s resource!', url); 18 | }; 19 | }); 20 | }; 21 | 22 | function selectResouce(url) { //#E 23 | var parts = url.split('/'); 24 | parts.shift(); 25 | var result = resources; 26 | for (var i = 0; i < parts.length; i++) { 27 | result = result[parts[i]]; 28 | } 29 | return result; 30 | } 31 | 32 | 33 | //#A Create a WebSockets server by passing it the Express server 34 | //#B Triggered after a protocol upgrade when the client connected 35 | //#C Register an observer corresponding to the resource in the protocol upgrade URL 36 | //#D Use a try/catch to catch to intercept errors (e.g., malformed/unsupported URLs) 37 | //#E This function takes a request URL and returns the corresponding resource 38 | 39 | -------------------------------------------------------------------------------- /chapter10-mashups/ui/code-bits/form-only.html: -------------------------------------------------------------------------------- 1 |
2 |
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/chapter7-implementation/part1-2-direct-gateway/servers/coap.js:
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1 | var coap = require('coap'), //#A
2 | utils = require('./../utils/utils');
3 |
4 | var port = 5683;
5 |
6 | coap.createServer(function (req, res) {
7 | console.info('CoAP device got a request for %s', req.url);
8 | if (req.headers['Accept'] != 'application/json') {
9 | res.code = '4.06'; //#B
10 | return res.end();
11 | }
12 | switch (req.url) { //#C
13 | case "/co2":
14 | respond(res, {'co2': utils.randomInt(0, 1000)}); //#D
15 | break;
16 | case "/temp":
17 | respond(res, {'temp': utils.randomInt(0, 40)});
18 | break;
19 | default:
20 | respond(res);
21 | }
22 | }).listen(port, function () {
23 | console.log("CoAP server started on port %s", port)
24 | });//#E
25 |
26 | function respond(res, content) { //#F
27 | if (content) {
28 | res.setOption('Content-Format', 'application/json');
29 | res.code = '2.05';
30 | res.end(JSON.stringify(content));
31 | } else {
32 | res.code = '4.04';
33 | res.end();
34 | }
35 | };
36 | //#A Require the Node.js CoAP module you installed
37 | //#B You only serve JSON, so you reply with a 4.06 (= HTTP 406: Not acceptable)
38 | //#C Handle the different resources requested
39 | //#D This is the CO2 resource; generate a random value for it and respond
40 | //#E Start the CoAP server on port 5683 (CoAP’s default port)
41 | //#F Send the JSON content back or reply with a 4.04 (= HTTP 404: Not found)
42 |
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/chapter3-node-js/mashupserver-local.js:
--------------------------------------------------------------------------------
1 | var http = require("http"),
2 | request = require('request'),
3 | fs = require('fs');
4 |
5 |
6 | var serviceRootUrl = 'http://localhost:8686';
7 |
8 | http.createServer(function(servReq, servResp){
9 | console.log('New incoming client request...');
10 |
11 | if (servReq.url == '/log') {
12 | // 1) Get temperature
13 | request({url: serviceRootUrl + '/temperature', json: true},
14 | function (err, resp, body) {
15 | if (!err && resp.statusCode == 200) {
16 | console.log(body);
17 | var temperature = body.temperature;
18 |
19 | // 2) Get the light level
20 | request({url: serviceRootUrl + '/light', json: true},
21 | function (err, resp, body) {
22 | if (!err && resp.statusCode == 200) {
23 | console.log(body);
24 | var light = body.light;
25 |
26 | // 3) Log the values
27 | var logEntry = 'Temperature: ' + temperature + ' Light: ' + light;
28 | fs.appendFile('log.txt', logEntry + ' - ', encoding='utf8', function (err) {
29 | if (err) throw err;
30 | servResp.writeHeader(200, {"Content-Type": "text/plain"});
31 | servResp.write(logEntry);
32 | servResp.end();
33 | });
34 | }
35 | });
36 | }
37 | });
38 | } else {
39 | servResp.writeHeader(200, {"Content-Type": "text/plain"});
40 | servResp.write('Please use /log');
41 | servResp.end();
42 | }
43 |
44 | }).listen(8787);
45 |
46 |
47 |
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/chapter2-hello-wot/client/ex-2.1-polling-temp.html:
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
3 |
5 | Change LED state
4 |Change the state of an LED
6 |
30 |
31 | Current temperature
15 | 16 | 17 | 33 | 34 | -------------------------------------------------------------------------------- /chapter3-node-js/listing-3.8-callbacks.js: -------------------------------------------------------------------------------- 1 | var http = require('http'), 2 | request = require('request'), 3 | fs = require('fs'); 4 | 5 | var port = 8787; 6 | var serviceRootUrl = 'http://localhost:8686'; 7 | 8 | 9 | http.createServer(function (servReq, servResp) { 10 | console.log('New incoming client request...'); 11 | if (servReq.url === '/log') { 12 | request({url: serviceRootUrl + '/temperature', json: true}, //#A 13 | function (err, resp, body) { 14 | if (err) throw err; 15 | if (resp.statusCode === 200) { 16 | console.log(body); 17 | var temperature = body.temperature; 18 | 19 | request({url: serviceRootUrl + '/light', json: true}, //#B 20 | function (err, resp, body) { 21 | if (err) throw err; 22 | if (resp.statusCode === 200) { 23 | console.log(body); 24 | var light = body.light; 25 | var logEntry = 'Temperature: ' + temperature + ' Light: ' + light; 26 | fs.appendFile('log.txt', logEntry + '\n', encoding = 'utf8', function (err) { //#C 27 | if (err) throw err; 28 | servResp.writeHeader(200, {"Content-Type": "text/plain"}); 29 | servResp.write(logEntry); 30 | servResp.end(); 31 | }); 32 | } 33 | }); 34 | } 35 | }); 36 | } else { 37 | servResp.writeHeader(200, {"Content-Type": "text/plain"}); 38 | servResp.write('Please use /log'); 39 | servResp.end(); 40 | } 41 | 42 | }).listen(port); 43 | console.log('Server listening on http://localhost:' + port); 44 | -------------------------------------------------------------------------------- /chapter7-implementation/part1-2-direct-gateway/middleware/converter.js: -------------------------------------------------------------------------------- 1 | var msgpack = require('msgpack5')(), 2 | encode = msgpack.encode, //#A 3 | json2html = require('node-json2html'); 4 | 5 | module.exports = function () { //#B 6 | return function (req, res, next) { 7 | console.info('Representation converter middleware called!'); 8 | if (req.result) { //#C 9 | switch (req.accepts(['json', 'html', 'application/x-msgpack'])) { //#D 10 | case 'html': 11 | console.info('HTML representation selected!'); 12 | var transform = {'tag': 'div', 'html': '${name} : ${value}'}; 13 | res.send(json2html.transform(req.result, transform)); //#E 14 | return; 15 | case 'application/x-msgpack': 16 | console.info('MessagePack representation selected!'); 17 | res.type('application/x-msgpack'); 18 | res.send(encode(req.result)); //#F 19 | return; 20 | default: //#G 21 | console.info('Defaulting to JSON representation!'); 22 | res.send(req.result); 23 | return; 24 | } 25 | } 26 | else { 27 | next(); //#H 28 | } 29 | } 30 | }; 31 | //#A Require the two modules and instantiate a MessagePack encoder 32 | //#B In Express, a middleware is usually a function returning a function 33 | //#C Check if the previous middleware left a result for you in req.result 34 | //#D Get the best representation to serve from the Accept header 35 | //#E If HTML was requested, use json2html to transform the JSON into simple HTML 36 | //#F Encode the JSON result into MessagePack using the encoder and return the result to the client 37 | //#G For all other formats, default to JSON 38 | //#H If no result was present in req.result, there’s not much you can do, so call the next middleware 39 | -------------------------------------------------------------------------------- /chapter7-implementation/part1-2-direct-gateway/servers/http.js: -------------------------------------------------------------------------------- 1 | // Final version 2 | var express = require('express'), 3 | actuatorsRoutes = require('./../routes/actuators'), 4 | sensorRoutes = require('./../routes/sensors'), 5 | thingsRoutes = require('./../routes/things'), 6 | resources = require('./../resources/model'), 7 | converter = require('./../middleware/converter'), 8 | cors = require('cors'), 9 | bodyParser = require('body-parser'); 10 | 11 | var app = express(); 12 | 13 | app.use(bodyParser.json()); 14 | 15 | app.use(cors()); 16 | 17 | app.use('/pi/actuators', actuatorsRoutes); 18 | app.use('/pi/sensors', sensorRoutes); 19 | app.use('/things', thingsRoutes); 20 | 21 | app.get('/pi', function (req, res) { 22 | res.send('This is the WoT-Pi!') 23 | }); 24 | 25 | // For representation design 26 | app.use(converter()); 27 | module.exports = app; 28 | 29 | 30 | /* 31 | //Initial version: 32 | 33 | var express = require('express'), 34 | actuatorsRoutes = require('./../routes/actuators'), 35 | sensorRoutes = require('./../routes/sensors'), 36 | resources = require('./../resources/model'), //#A 37 | cors = require('cors'); 38 | 39 | var app = express(); //#B 40 | 41 | app.use(cors()); //#C 42 | 43 | app.use('/pi/actuators', actuatorsRoutes); //#D 44 | app.use('/pi/sensors', sensorRoutes); 45 | 46 | app.get('/pi', function (req, res) { //#E 47 | res.send('This is the WoT-Pi!') 48 | }); 49 | 50 | module.exports = app; 51 | 52 | //#A Requires the Express framework, your routes, and the model 53 | //#B Creates an application with the Express framework; this wraps an HTTP server 54 | //#C Enable CORS support (see section 6.1.5) 55 | //#D Binds your routes to the Express application; bind them to /pi/actuators/... and /pi/sensors/... 56 | //#E Create a default route for /pi 57 | 58 | */ -------------------------------------------------------------------------------- /chapter9-sharing/social-auth/config/change_me_caCert.pem: -------------------------------------------------------------------------------- 1 | -----BEGIN CERTIFICATE----- 2 | MIIE0DCCA7igAwIBAgIJAMnis+YL+r3QMA0GCSqGSIb3DQEBCwUAMIGgMQswCQYD 3 | VQQGEwJVSzEUMBIGA1UECBMLTG9uZG9uc2hpcmUxDzANBgNVBAcTBkxvbmRvbjEW 4 | MBQGA1UEChMNV2ViIG9mIFRoaW5nczEWMBQGA1UECxMNV2ViIG9mIFRoaW5nczEW 5 | MBQGA1UEAxMNV2ViIG9mIFRoaW5nczEiMCAGCSqGSIb3DQEJARYTYm9va0B3ZWJv 6 | ZnRoaW5ncy5pbzAeFw0xNTA4MTUxNjQ3MTdaFw0xODA4MTQxNjQ3MTdaMIGgMQsw 7 | CQYDVQQGEwJVSzEUMBIGA1UECBMLTG9uZG9uc2hpcmUxDzANBgNVBAcTBkxvbmRv 8 | bjEWMBQGA1UEChMNV2ViIG9mIFRoaW5nczEWMBQGA1UECxMNV2ViIG9mIFRoaW5n 9 | czEWMBQGA1UEAxMNV2ViIG9mIFRoaW5nczEiMCAGCSqGSIb3DQEJARYTYm9va0B3 10 | ZWJvZnRoaW5ncy5pbzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANKQ 11 | /bP/Ns5+WVm1w1PPl2GEUJXGG3LK3wcMkQuIYm2mm4luv/mnyoGZFklZ5/Hdv7+A 12 | cluLYivel4/nPvOdwgKg8/1nobP1D49dhLC8q6NneA5cMmyPXJzX/cBnVSg54cWP 13 | LUCxChumJ7JT1c7IKBfBAGX6D3X+aZ9vTQnhyquNQr0GmQ2gtUFwcizAXrsh9wYU 14 | jc0ndS4jNHm8qXLUggE2uP0T+uUUBCaC5vpEfh1DcNSpwzNlbfvFYK+R9WewlDkY 15 | 2UPPcLvg6+ptJcqbaX+NH1GiY9c2WeQ7gCZN0hA67tDABpGoBaI8HnBvUCHMN8c1 16 | C6PboUgn+FGOLFa5MSsCAwEAAaOCAQkwggEFMB0GA1UdDgQWBBTlxSQDM/ICUI6M 17 | rO9O0S7vpm711jCB1QYDVR0jBIHNMIHKgBTlxSQDM/ICUI6MrO9O0S7vpm711qGB 18 | pqSBozCBoDELMAkGA1UEBhMCVUsxFDASBgNVBAgTC0xvbmRvbnNoaXJlMQ8wDQYD 19 | VQQHEwZMb25kb24xFjAUBgNVBAoTDVdlYiBvZiBUaGluZ3MxFjAUBgNVBAsTDVdl 20 | YiBvZiBUaGluZ3MxFjAUBgNVBAMTDVdlYiBvZiBUaGluZ3MxIjAgBgkqhkiG9w0B 21 | CQEWE2Jvb2tAd2Vib2Z0aGluZ3MuaW+CCQDJ4rPmC/q90DAMBgNVHRMEBTADAQH/ 22 | MA0GCSqGSIb3DQEBCwUAA4IBAQB6pp9Dx0yYenBLaxUFUK+2oRzINW4h/uiqeS30 23 | YmNrAVUL8Q53Ri/q18+Gr1XQkl4A9MS0g2sBqG5fEP1b5JzBriIWrBJDBVazGM7U 24 | wE+ei+IqvDqb092bpfVDe+7g3+58PmuugrPcZw4eZ8qUAKAiIdQA6V6V0N038x6f 25 | GB6xHwwJ1BfHThI0oLioJrg/qS/bbLa3PVMZS/k4Ulpa2xTPO1SwwBJ89VRMz1AW 26 | mqk8aTpC5KyUKWqbD84efkOdG0epOW3YoWi5te48VxlOd0GQ91aOh1wyzT27N7x1 27 | XCPVWkOHtNfxgASdIo+yLdxOjlDePjlGGtzSi78FU1JTCY8Q 28 | -----END CERTIFICATE----- 29 | -------------------------------------------------------------------------------- /chapter9-sharing/social-auth/views/login.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
27 |
32 |
33 |
34 |
51 |
52 |
59 |
60 |
61 |
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/chapter3-node-js/listing-3.9-callbacks-named-functions.js:
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1 | var http = require("http"),
2 | request = require('request'),
3 | fs = require('fs');
4 |
5 | var serviceRootUrl = 'http://localhost:8686';
6 |
7 | http.createServer(function (req, res) {
8 | console.log('New incoming client request...');
9 |
10 | if (req.url === '/log') {
11 | getTemperature(res); //#A
12 |
13 | } else {
14 | res.writeHeader(200, {"Content-Type": "text/plain"});
15 | res.write('Please use /log');
16 | res.end();
17 | }
18 |
19 | }).listen(8787);
20 |
21 | function getTemperature(res) { //#B
22 | request({url: serviceRootUrl + '/temperature', json: true}, function (err, resp, body) {
23 | if (err) throw err;
24 | if (resp.statusCode === 200) {
25 | console.log(body);
26 | var temp = body.temperature;
27 |
28 | getLight(res, temp); //#C
29 | }
30 | });
31 | }
32 |
33 | function getLight(res, temp) {
34 | request({url: serviceRootUrl + '/light', json: true}, function (err, resp, body) {
35 | if (err) throw err;
36 | if (resp.statusCode === 200) {
37 | console.log(body);
38 | var light = body.light;
39 |
40 | logValuesReply(res, temp, light); //#D
41 | }
42 | });
43 | }
44 |
45 | function logValuesReply(res, temp, light) {
46 | var logEntry = 'Temperature: ' + temp + ' Light: ' + light;
47 | fs.appendFile('log.txt', logEntry + '\n', encoding = 'utf8', function (err) {
48 | if (err) throw err;
49 | res.writeHeader(200, {"Content-Type": "text/plain"}); //#E
50 | res.write(logEntry);
51 | res.end();
52 | });
53 | }
54 |
55 | //#A Get the temperature and start the chain of calls
56 | //#B A named temperature function
57 | //#C Once the callback for temperature has been called we proceed with calling the getLight function
58 | //#D We then call the named function to log values
59 | //#E Return to the client
60 |
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/chapter9-sharing/social-auth/config/change_me_privateKey.pem:
--------------------------------------------------------------------------------
1 | -----BEGIN RSA PRIVATE KEY-----
2 | Proc-Type: 4,ENCRYPTED
3 | DEK-Info: DES-EDE3-CBC,44A2DEDA261477B8
4 |
5 | LiB+m2sQTIWoP6h3Yl+lCNHtyF5B7htWuBILA4Xf4+87GJGWguTXZGh+av4YlnAI
6 | syl3Yiyr9QhBSFUbsIkfnN0MhfO6C2PogJ82vOSuB6phtZk88yIfLMgbL2xvcI6l
7 | EgcVWsOTkC+c8ORPHMYsuXmKAAEi75VxPw+OCIMeGhgaHGf1ZBjKn6GbPYyi1doH
8 | LGsSmmBM+fiRsWiBYO/4lUmzF12WZuQo/zzS4g+VqTkerTQRI/9loPQMvUx/08s6
9 | ZOQNj9JwflYJZfLqHd84ddN0oh06GSe672rKRle1R9V9siULlRW8To/kuYBSxZTm
10 | UMLSc8cXgoMLxtTnBkkxg+oiJmO3+Hrtab9nLsXcL42XXDxvZ5L0vl/dOZxqzAKN
11 | YSJlCspaeF261xTMdGPnAkdRUt18/8XtLmySD4RbrwDysngO+ZyV7K4mDsuJ5pyO
12 | 4iwSD1izb/rTWKec0LYZ+iEUGg1pvHWFbDI7RqxOuBLCUnxCKY7LfMSmkKGGF7nK
13 | K/4bviR9MkiVqaSPivxp9+Byfx1V+MnaKMBnxhqpmBkKK/BruYyYDsFxuxFgvg2t
14 | 8TfIuuGR3yNfzzSHMmj15Zwro7cuuAzmMJ2aQJTTdFJy4fc6ja4rsZtHQZh949gZ
15 | VpqJO7OpYRu1CpagedF1LmOufShyUTSbJzaGQiy8u4Jgt0WOCUzZerPDgyr1QfAo
16 | G2B1jPQ+uMVe07wZrVZhik2V+egnXCNHK6jmwpMk26woMRMqpuuuPDrrLtRIOEXh
17 | Lfa93pSdXPqUjgtiLzCWtXJJCdAPZkR2Ljs5UVtsh5x/km73mUqme+c4mBvIMxAB
18 | zqJZm+bB/PBWwvPXeVSuh+RHVv1n/n5yhBibJKSlYbo78dneMi9ec3nF1+Nx0uAp
19 | HAnNvmfOGBThM9/lkHz0ui9sjMmCiddypn9XoqAIXLxMUGbm/pqhMjKMHDY5zYWu
20 | teog0OfiCUWlft+tOTem2BqnbdG5cKxzee6wBKbuAQWaiMGtV0/Mae0tnuRnMYfd
21 | NvoxOA8Ha1cy9nkOT9nX8lUhpFOiYFXSNA4ei7JdhGB+4Goyyq2uwZq9BXuPltro
22 | haTfflsPu7C4u3yNxehahIY3bPdAE3qU4Y4znn5R4HornNWenc5k7vB/Etni8Yey
23 | ZaaBOUhiZEaO8GCTpBbvaZRU/diKpWiGn/EeJY/e2iBetg8Bsme4k7SupnD+nrmG
24 | iUG3aMB5fwp1kNceaRxw2ofYctP+hkoO80wRhxfhhpW68Wqic9/P38DHnYSWQMdi
25 | SCe30hbny/D/ATTY5vrjdj4/89pxxSJFaJk+G6Q15IhuaJwj8pcclmvlTtgUTQZy
26 | LYSm87CixnsqnMjqWaUyOQWoE4c4IcO3MGPWWpEpfQN0Wp8L7ht8bP+Y0vlwWSVu
27 | VSdyj/Io0TcuHtV2Av2K6F+PixXuMgQpYj9ktHCs0HkeWGsGiLJbZ3eDBgBEpG/d
28 | 9D4/Z1SVJ8DkbOgkp4DaN9jSc5FfyiUpHbN528Zwcl0nGuO6onJnsgbnURxBxf4d
29 | mK235I7vYLm5o9EHecbrDzLsH7G/XvIYwD2ZVy57142QHC4u4fd3Yg==
30 | -----END RSA PRIVATE KEY-----
31 |
--------------------------------------------------------------------------------
/chapter10-mashups/mashup.css:
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1 | .onoffswitch {
2 | position: relative; width: 200px;
3 | -webkit-user-select:none; -moz-user-select:none; -ms-user-select: none;
4 | }
5 | .onoffswitch-checkbox {
6 | display: none;
7 | }
8 | .onoffswitch-label {
9 | display: block; overflow: hidden; cursor: pointer;
10 | border: 2px solid #999999; border-radius: 20px;
11 | }
12 | .onoffswitch-inner {
13 | display: block; width: 200%; margin-left: -100%;
14 | -moz-transition: margin 0.3s ease-in 0s; -webkit-transition: margin 0.3s ease-in 0s;
15 | -o-transition: margin 0.3s ease-in 0s; transition: margin 0.3s ease-in 0s;
16 | }
17 | .onoffswitch-inner:before, .onoffswitch-inner:after {
18 | display: block; float: left; width: 50%; height: 74px; padding: 0; line-height: 74px;
19 | font-size: 14px; color: white; font-family: Trebuchet, Arial, sans-serif; font-weight: bold;
20 | -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box;
21 | }
22 | .onoffswitch-inner:before {
23 | content: "Intruder detected!";
24 | padding-left: 10px;
25 | background-color: #F70519; color: #FFFFFF;
26 | }
27 | .onoffswitch-inner:after {
28 | content: "No one detected!";
29 | padding-right: 10px;
30 | background-color: #0839FC; color: #999999;
31 | text-align: right;
32 | }
33 | .onoffswitch-switch {
34 | display: block; width: 50px; margin: 12px;
35 | background: #FFFFFF;
36 | border: 2px solid #999999; border-radius: 20px;
37 | position: absolute; top: 0; bottom: 0; right: 122px;
38 | -moz-transition: all 0.3s ease-in 0s; -webkit-transition: all 0.3s ease-in 0s;
39 | -o-transition: all 0.3s ease-in 0s; transition: all 0.3s ease-in 0s;
40 | }
41 | .onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-inner {
42 | margin-left: 0;
43 | }
44 | .onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-switch {
45 | right: 0px;
46 | }
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/chapter7-implementation/part1-2-direct-gateway/plugins/internal/pirPlugin.js:
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1 | var resources = require('./../../resources/model');
2 |
3 | var interval, sensor;
4 | var model = resources.pi.sensors.pir;
5 | var pluginName = resources.pi.sensors.pir.name;
6 | var localParams = {'simulate': false, 'frequency': 2000};
7 |
8 | exports.start = function (params) { //#A
9 | localParams = params;
10 | if (localParams.simulate) {
11 | simulate();
12 | } else {
13 | connectHardware();
14 | }
15 | };
16 |
17 | exports.stop = function () { //#A
18 | if (localParams.simulate) {
19 | clearInterval(interval);
20 | } else {
21 | sensor.unexport();
22 | }
23 | console.info('%s plugin stopped!', pluginName);
24 | };
25 |
26 | function connectHardware() { //#B
27 | var Gpio = require('onoff').Gpio;
28 | sensor = new Gpio(model.gpio, 'in', 'both'); //#C
29 | sensor.watch(function (err, value) { //#D
30 | if (err) exit(err);
31 | model.value = !!value;
32 | showValue();
33 | });
34 | console.info('Hardware %s sensor started!', pluginName);
35 | };
36 |
37 | function simulate() { //#E
38 | interval = setInterval(function () {
39 | model.value = !model.value;
40 | showValue();
41 | }, localParams.frequency);
42 | console.info('Simulated %s sensor started!', pluginName);
43 | };
44 |
45 | function showValue() {
46 | console.info(model.value ? 'there is someone!' : 'not anymore!');
47 | };
48 |
49 | //#A starts and stops the plugin, should be accessible from other Node.js files so we export them
50 | //#B require and connect the actual hardware driver and configure it
51 | //#C configure the GPIO pin to which the PIR sensor is connected
52 | //#D start listening for GPIO events, the callback will be invoked on events
53 | //#E allows the plugin to be in simulation mode. This is very useful when developing or when you want to test your code on a device with no sensors connected, such as your laptop.
54 |
55 |
56 |
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/chapter7-implementation/part1-2-direct-gateway/routes/actuators.js:
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1 | var express = require('express'),
2 | router = express.Router(),
3 | resources = require('./../resources/model');
4 |
5 | router.route('/').get(function (req, res, next) {
6 | req.result = resources.pi.actuators;
7 | next();
8 | });
9 |
10 | router.route('/leds').get(function (req, res, next) {
11 | req.result = resources.pi.actuators.leds;
12 | next();
13 | });
14 |
15 | router.route('/leds/:id').get(function (req, res, next) { //#A
16 | req.result = resources.pi.actuators.leds[req.params.id];
17 | next();
18 | }).put(function(req, res, next) { //#B
19 | var selectedLed = resources.pi.actuators.leds[req.params.id];
20 | selectedLed.value = req.body.value; //#C
21 | req.result = selectedLed;
22 | next();
23 | });
24 |
25 | module.exports = router;
26 |
27 | //#A Callback for a GET request on an LED
28 | //#B Callback for a PUT request on an LED
29 | //#C Update the value of the selected LED in the model
30 |
31 |
32 | /*
33 | //Initial version:
34 |
35 | var express = require('express'),
36 | router = express.Router(),
37 | resources = require('./../resources/model');
38 |
39 | router.route('/').get(function (req, res, next) { // #A
40 | res.send(resources.pi.actuators); // #B
41 | });
42 |
43 | router.route('/leds').get(function (req, res, next) { // #C
44 | res.send(resources.pi.actuators.leds);
45 | });
46 |
47 | router.route('/leds/:id').get(function (req, res, next) { //#D
48 | res.send(resources.pi.actuators.leds[req.params.id]); //#E
49 | });
50 |
51 | module.exports = router;
52 |
53 | //#A Create a new route for a GET request
54 | //#B Reply with the actuators model when this route is selected
55 | //#C This route serves a list of LEDs
56 | //#D with :id we inject a variable in the path which will be the LED number
57 | //#E the path variables are accessible via req.params.id we use this to select the right object in our model and return it
58 | */
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/chapter10-mashups/mashup.html:
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
55 |
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49 |
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57 |
61 |
62 |
63 |
64 |
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/chapter7-implementation/part1-2-direct-gateway/wot-server.js:
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1 | // Final version
2 | var httpServer = require('./servers/http'),
3 | wsServer = require('./servers/websockets'),
4 | resources = require('./resources/model');
5 |
6 | // Internal Plugins
7 | var ledsPlugin = require('./plugins/internal/ledsPlugin'), //#A
8 | pirPlugin = require('./plugins/internal/pirPlugin'), //#A
9 | dhtPlugin = require('./plugins/internal/DHT22SensorPlugin'); //#A
10 |
11 | // Internal Plugins for sensors/actuators connected to the PI GPIOs
12 | // If you test this with real sensors do not forget to set simulate to 'false'
13 | pirPlugin.start({'simulate': true, 'frequency': 2000}); //#B
14 | ledsPlugin.start({'simulate': true, 'frequency': 10000}); //#B
15 | dhtPlugin.start({'simulate': true, 'frequency': 10000}); //#B
16 |
17 | // External Plugins
18 | var coapPlugin = require('./plugins/external/coapPlugin');
19 | coapPlugin.start({'simulate': false, 'frequency': 10000});
20 |
21 | // HTTP Server
22 | var server = httpServer.listen(resources.pi.port, function () {
23 | console.log('HTTP server started...');
24 |
25 | // Websockets server
26 | wsServer.listen(server);
27 |
28 | console.info('Your WoT Pi is up and running on port %s', resources.pi.port);
29 | });
30 | //#A Require all the sensor plugins you need
31 | //#B Start them with a parameter object; here you start them on a laptop so you activate the simulation function
32 |
33 |
34 |
35 | /*
36 | // Initial version:
37 | var httpServer = require('./servers/http'), //#A
38 | resources = require('./resources/model');
39 |
40 | var server = httpServer.listen(resources.pi.port, function () { //#B
41 | console.info('Your WoT Pi is up and running on port %s', resources.pi.port); //#C
42 | });
43 |
44 | //#A Load the http server and the model
45 | //#B Start the HTTP server by invoking listen() on the Express application
46 | //#C Once the server is started the callback is invoked
47 | */
48 |
49 |
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/chapter9-sharing/social-auth/views/account.html:
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1 |
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3 |
4 |
5 |
6 |
7 |
8 |
9 |
32 |
47 |
48 |
49 |
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57 |
58 |
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/chapter7-implementation/part1-2-direct-gateway/plugins/internal/ledsPlugin.js:
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1 | var resources = require('./../../resources/model');
2 |
3 | var actuator, interval;
4 | var model = resources.pi.actuators.leds['1'];
5 | var pluginName = model.name;
6 | var localParams = {'simulate': false, 'frequency': 2000};
7 |
8 | exports.start = function (params) {
9 | localParams = params;
10 | observe(model); //#A
11 |
12 | if (localParams.simulate) {
13 | simulate();
14 | } else {
15 | connectHardware();
16 | }
17 | };
18 |
19 | exports.stop = function () {
20 | if (localParams.simulate) {
21 | clearInterval(interval);
22 | } else {
23 | actuator.unexport();
24 | }
25 | console.info('%s plugin stopped!', pluginName);
26 | };
27 |
28 | function observe(what) {
29 | Object.observe(what, function (changes) {
30 | console.info('Change detected by plugin for %s...', pluginName);
31 | switchOnOff(model.value); //#B
32 | });
33 | };
34 |
35 | function switchOnOff(value) {
36 | if (!localParams.simulate) {
37 | actuator.write(value === true ? 1 : 0, function () { //#C
38 | console.info('Changed value of %s to %s', pluginName, value);
39 | });
40 | }
41 | };
42 |
43 | function connectHardware() {
44 | var Gpio = require('onoff').Gpio;
45 | actuator = new Gpio(model.gpio, 'out'); //#D
46 | console.info('Hardware %s actuator started!', pluginName);
47 | };
48 |
49 | function simulate() {
50 | interval = setInterval(function () {
51 | // Switch value on a regular basis
52 | if (model.value) {
53 | model.value = false;
54 | } else {
55 | model.value = true;
56 | }
57 | }, localParams.frequency);
58 | console.info('Simulated %s actuator started!', pluginName);
59 | };
60 |
61 | //#A Observe the model for the LEDs
62 | //#B Listen for model changes, on changes call switchOnOff
63 | //#C Change the LED state by changing the GPIO state
64 | //#D Connect the GPIO in write (output) mode
65 |
66 |
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/chapter10-mashups/ui/code-bits/properties.txt:
--------------------------------------------------------------------------------
1 | "properties": {
2 | "link": "/properties",
3 | "title": "List of Properties",
4 | "resources": {
5 | "temperature": {
6 | "name": "Temperature Sensor",
7 | "description": "An ambient temperature sensor.",
8 | "values": {
9 | "temp": {
10 | "name": "Temperature sensor",
11 | "description": "The temperature in celsius",
12 | "unit": "celsius",
13 | "customFields": {
14 | "gpio": 21
15 | }
16 | }
17 | },
18 | "tags": ["sensor","public","indoors"]
19 | },
20 | "humidity": {
21 | "name": "Humidity Sensor",
22 | "description": "An ambient humidity sensor.",
23 | "values": {
24 | "h": {
25 | "name": "Humidity",
26 | "description": "Percentage of Humidity",
27 | "unit": "%",
28 | "customFields": {
29 | "gpio": 21
30 | }
31 | }
32 | },
33 | "tags": ["sensor","public"]
34 | },
35 | "pir": {
36 | "name": "Passive Infrared",
37 | "description": "A passive infrared sensor.",
38 | "values": {
39 | "presence": {
40 | "name": "Presence",
41 | "description": "Current sensor value (true=motion detected)",
42 | "type": "boolean",
43 | "customFields": {
44 | "gpio": 20
45 | }
46 | }
47 | },
48 | "tags": ["sensor","public"]
49 | },
50 | "leds": {
51 | "name": "LEDs",
52 | "description": "The LEDs of this device.",
53 | "values": {
54 | "1": {
55 | "name": "LED 1",
56 | "customFields": {
57 | "gpio": 17
58 | }
59 | },
60 | "2": {
61 | "name": "LED 2",
62 | "customFields": {
63 | "gpio": 19
64 | }
65 | }
66 | },
67 | "tags": ["sensor","public"]
68 | }
69 | }
70 | }
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/chapter3-node-js/listing-3.11-callbacks-control-flow.js:
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1 | var http = require("http"),
2 | request = require('request'),
3 | fs = require('fs'),
4 | async = require('async');
5 |
6 | var port = 8787;
7 | var serviceRootUrl = 'http://localhost:8686';
8 |
9 | http.createServer(function (req, res) {
10 | console.log('New incoming client request...');
11 | if (req.url === '/log') {
12 | async.series([ //#A
13 | getTemperature,
14 | getLight
15 | ],
16 | function (err, results) { //#B
17 | console.log(results); //#C
18 | var logEntry = 'Temperature: ' + results[0] + ' Light: ' + results[1];
19 | fs.appendFile('log.txt', logEntry + '\n', encoding = 'utf8', function (err) {
20 | if (err) throw err;
21 | res.writeHeader(200, {"Content-Type": "text/plain"});
22 | res.write(logEntry);
23 | res.end();
24 | })
25 | }
26 | );
27 |
28 | } else {
29 | res.writeHeader(200, {"Content-Type": "text/plain"});
30 | res.write('Please use /log');
31 | res.end();
32 | }
33 | }).listen(port);
34 | console.log('Server listening on http://localhost:' + port);
35 |
36 | function getTemperature(callback) {
37 | request({url: serviceRootUrl + '/temperature', json: true}, function (err, res, body) {
38 | if (err) callback(err);
39 | if (res && res.statusCode === 200) {
40 | console.log(body);
41 | var temp = body.temperature;
42 | callback(null, temp); //#D
43 | } else callback(null, null);
44 | });
45 | }
46 |
47 | function getLight(callback) {
48 | request({url: serviceRootUrl + '/light', json: true}, function (err, res, body) {
49 | if (err) callback(err);
50 | if (res && res.statusCode === 200) {
51 | console.log(body);
52 | var light = body.light;
53 | callback(null, light); //#D
54 | } else callback(null, null);
55 | });
56 | }
57 |
58 | //#A We create an array of functions to be invoked in series
59 | //#B This function is called when the last function in the series returned
60 | //#C results is now equal to [light, temperature]
61 | //#D Call the next function in the series
62 |
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/chapter7-implementation/part1-2-direct-gateway/routes/sensors.js:
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1 | // Final version
2 | var express = require('express'),
3 | router = express.Router(),
4 | resources = require('./../resources/model');
5 |
6 | router.route('/').get(function (req, res, next) {
7 | req.result = resources.pi.sensors; //#A
8 | next(); //#B
9 | });
10 |
11 | router.route('/pir').get(function (req, res, next) {
12 | req.result = resources.pi.sensors.pir;
13 | next();
14 | });
15 |
16 | router.route('/temperature').get(function (req, res, next) {
17 | req.result = resources.pi.sensors.temperature;
18 | next();
19 | });
20 |
21 | router.route('/humidity').get(function (req, res, next) {
22 | req.result = resources.pi.sensors.humidity;
23 | next();
24 | });
25 |
26 | module.exports = router;
27 |
28 | //#A Assign the results to a new property of the req object that you pass along from middleware to middleware
29 | //#B Call the next middleware; the framework will ensure the next middleware gets access to req (including the req.result) and res
30 |
31 |
32 |
33 | /*
34 | // Initial version
35 | var express = require('express'),
36 | router = express.Router(), //#A
37 | resources = require('./../resources/model');
38 |
39 | router.route('/').get(function (req, res, next) { //#B
40 | res.send(resources.pi.sensors); //#C
41 | });
42 |
43 | router.route('/pir').get(function (req, res, next) { //#D
44 | res.send(resources.pi.sensors.pir);
45 | });
46 |
47 | router.route('/temperature').get(function (req, res, next) { //#E
48 | res.send(resources.pi.sensors.temperature);
49 | });
50 |
51 | router.route('/humidity').get(function (req, res, next) { //#E
52 | res.send(resources.pi.sensors.humidity);
53 | });
54 |
55 | module.exports = router; //#F
56 |
57 | //#A We require and instantiate an Express Router to define the path to our resources
58 | //#B Create a new route for a GET request on all sensors and attach a callback function
59 | //#C Reply with the sensor model when this route is selected
60 | //#D This route serves the passive infrared sensor
61 | //#E These routes serve the temperature and humidity sensor
62 | //#F We export router to make it accessible for "requirers" of this file
63 | */
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/chapter7-implementation/part3-cloud/simple-plug.js:
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1 | var mqtt = require('mqtt');
2 |
3 | var config = require('./config.json'); // #A
4 | var thngId=config.thngId;
5 | var thngUrl='/thngs/'+thngId;
6 | var thngApiKey=config.thngApiKey;
7 | var interval;
8 |
9 | console.log('Using Thng #'+thngId+' with API Key: '+ thngApiKey);
10 |
11 | var client = mqtt.connect("mqtts://mqtt.evrythng.com:8883", {// #B
12 | username: 'authorization',
13 | password: thngApiKey
14 | });
15 |
16 | client.on('connect', function () { // #C
17 | client.subscribe(thngUrl+'/properties/'); //#D
18 | updateProperty('livenow', true); //#E
19 |
20 | if (!interval) interval = setInterval(updateProperties, 5000); //#F
21 | });
22 |
23 | client.on('message', function (topic, message) { // #G
24 | console.log(message.toString());
25 | });
26 |
27 |
28 | function updateProperties () {
29 | var voltage = (219.5 + Math.random()).toFixed(3); // #H
30 | updateProperty ('voltage',voltage);
31 |
32 | var current = (Math.random()*10).toFixed(3); // #I
33 | updateProperty ('current',current);
34 |
35 | var power = (voltage * current * (0.6+Math.random()/10)).toFixed(3); // #J
36 | updateProperty ('power',power);
37 | }
38 |
39 | function updateProperty (property,value) {
40 | client.publish(thngUrl+'/properties/'+property, '[{"value": '+value+'}]');
41 | }
42 |
43 | // Let's close this connection cleanly
44 | process.on('SIGINT', function() { // #K
45 | clearInterval(interval);
46 | updateProperty ('livenow', false);
47 | client.end();
48 | process.exit();
49 | });
50 | //#A Load configuration from file (Thng ID and Thng API key)
51 | //#B Connect to the secure MQTT server on EVRYTHNG
52 | //#C Callback called once when the MQTT connection suceeds
53 | //#D Subscribe to all properties
54 | //#E Set the property livenow to true
55 | //#F Call the function updateProperties() in 5 seconds
56 | //#G Called every time an MQTT message is received from the broker
57 | //#H Measures voltage (fluctuates around ~220 volts)
58 | //#I Measures current (fluctuates 0–10 amps)
59 | //#J Measures power using P=U*I*PF (PF=power factor fluctuates 60–70%)
60 | //#K Cleanly exit this code and set the livenow property to false
61 |
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/chapter3-node-js/listing-3.11-callbacks-control-flow-no-named.js:
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1 | var http = require("http"),
2 | request = require('request'),
3 | fs = require('fs'),
4 | async = require('async');
5 |
6 | var port = 8787;
7 | var serviceRootUrl = 'http://localhost:8686';
8 |
9 | http.createServer(function (req, res) {
10 | console.log('New incoming client request...');
11 | if (req.url === '/log') {
12 | async.series([ //#A
13 | function (callback) {
14 | request({url: serviceRootUrl + '/temperature', json: true}, function (err, res, body) {
15 | if (err) callback(err);
16 | if (res && res.statusCode === 200) {
17 | console.log(body);
18 | var temp = body.temperature;
19 | callback(null, temp); //#B
20 | } else callback(null, null);
21 | });
22 | },
23 | function (callback) {
24 | request({url: serviceRootUrl + '/light', json: true}, function (err, res, body) {
25 | if (err) callback(err);
26 | if (res && res.statusCode === 200) {
27 | console.log(body);
28 | var light = body.light;
29 | callback(null, light);
30 | } else callback(null, null);
31 | });
32 | }],
33 | function (err, results) { //#C
34 | console.log(results); //#D
35 | var logEntry = 'Temperature: ' + results[0] + ' Light: ' + results[1];
36 | fs.appendFile('log.txt', logEntry + '\n', encoding = 'utf8', function (err) {
37 | if (err) throw err;
38 | res.writeHeader(200, {"Content-Type": "text/plain"});
39 | res.write(logEntry);
40 | res.end();
41 | });
42 | });
43 |
44 | } else {
45 | res.writeHeader(200, {"Content-Type": "text/plain"});
46 | res.write('Please use /log');
47 | res.end();
48 | }
49 | }).listen(port);
50 | console.log('Server listening on http://localhost:' + port);
51 |
52 | //#A We create an array of functions to be invoked in series
53 | //#B Call the next function in the series
54 | //#C This function is called when the last function in the series returned
55 | //#D results is now equal to [light, temperature]
56 |
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/chapter3-node-js/mashupserver.js:
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1 | var http = require("http"),
2 | request = require('request'),
3 | fs = require('fs');
4 |
5 |
6 | var location = 'London, GB';
7 | var piRootUrl = 'http://localhost:3000/pi/';
8 | var name = 'Dom'
9 |
10 | http.createServer(function(webReq, webResp){
11 |
12 | // 1) Get Yahoo Weather
13 | request({
14 | url: prepareYahooWeatherUrl(location),
15 | json: true}, function (err, resp, yahooResult) {
16 | if (!err && resp.statusCode == 200) {
17 |
18 | console.log(yahooResult);
19 | var localTemp = yahooResult.query.results.channel.item.condition.temp;
20 | console.log('Local @ ' + location + ': ' + localTemp);
21 |
22 | // 2) Call the Pi
23 | request({
24 | url: piRootUrl + 'sensors/temperature',
25 | json: true}, function (err, resp, piResult) {
26 | if (!err && resp.statusCode == 200) {
27 |
28 | console.log(piResult);
29 | var piTemp = piResult.value;
30 | console.log('Pi @ London: ' + piTemp);
31 |
32 | // 3) Compare and log
33 | var message = prepareMessage(name, location, localTemp, piTemp);
34 | fs.appendFile('log.txt', message, encoding='utf8', function (err) {
35 | if (err) throw err;
36 | webResp.writeHeader(200, {"Content-Type": "text/plain"});
37 | webResp.write(message);
38 | webResp.end();
39 | });
40 | }
41 | });
42 | }
43 | });
44 |
45 | }).listen(8080);
46 |
47 | function prepareYahooWeatherUrl(location) {
48 | return "https://query.yahooapis.com/v1/public/yql?q=select item from weather.forecast where woeid in (select woeid from geo.places(1) where text='" + location + "') and u='c'&format=json";
49 | }
50 |
51 | function prepareMessage(name, location, localTemp, piTemp) {
52 | var diff = localTemp - piTemp;
53 | var qualifier = ' higher ';
54 | if(diff < 0) {
55 | qualifier = ' lower ';
56 | }
57 | var result = 'Hello I\'m ' + name + ' from ' + location;
58 | result += ' my local temperature is ' + Math.abs(diff) + ' degrees';
59 | result += qualifier + 'than yours!';
60 | return result;
61 | }
62 |
63 |
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/chapter2-hello-wot/client/ex-3.2-actuator-ajax-json.html:
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1 |
2 |
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6 |
7 |
8 | Send Message to WoT Pi (AJAX+JSON)
17 | 18 |
19 |
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/chapter10-mashups/node-red/pir-websockets-twitter.json:
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1 | [{"id":"f65a484f.a5375","type":"websocket-client","path":"ws://localhost:8484/properties/pir","wholemsg":"true"},{"id":"75ecda01.76cfa4","type":"http request","name":"get snapshot","method":"GET","ret":"bin","url":"http://devices.webofthings.io:9090/snapshot.cgi?user=snapshots&pwd=4MXfTSr0gH","x":602,"y":230,"z":"9d438066.56d85","wires":[["1df4799a.f61e1e"]]},{"id":"9d70a71d.27c8a8","type":"twitter out","twitter":"","name":"Tweet","x":959,"y":205,"z":"9d438066.56d85","wires":[]},{"id":"1df4799a.f61e1e","type":"function","name":"copy image","func":"msg.media = msg.payload;\nmsg.payload = 'Intruder Detected!';\nreturn msg;","outputs":1,"noerr":0,"x":805,"y":210,"z":"9d438066.56d85","wires":[["9d70a71d.27c8a8"]]},{"id":"f0212b36.2d5d58","type":"function","name":"check PIR value","func":"if(msg.presence) {\n return msg;\n}\nelse return null;","outputs":1,"noerr":0,"x":409,"y":237,"z":"9d438066.56d85","wires":[["75ecda01.76cfa4"]]},{"id":"eb0886fa.41c758","type":"http request","name":"turn led on/off","method":"POST","ret":"txt","url":"http://localhost:8484/actions/ledState","x":600,"y":306,"z":"9d438066.56d85","wires":[["1c339f4a.6ba069"]]},{"id":"1c339f4a.6ba069","type":"debug","name":"","active":false,"console":"false","complete":"true","x":797,"y":277,"z":"9d438066.56d85","wires":[]},{"id":"4e1f5118.fb3c38","type":"function","name":"prepare led msg","func":"msg.headers = {\n'Accept' : 'application/json',\n'Content-Type' : 'application/json',\n'Authorization' : 'cKXRTaRylYWQiF3MICaKndG4WJMcVLFz'\n}\nif(msg.presence) {\n msg.payload = {\"ledId\" : 1, \"state\" : true};\n return msg;\n} else {\n msg.payload = {\"ledId\" : 1, \"state\" : false};\n return msg;\n}\n","outputs":1,"noerr":0,"x":409,"y":280,"z":"9d438066.56d85","wires":[["eb0886fa.41c758","c7d4c3a5.f9ba28"]]},{"id":"f1bebcf6.694a5","type":"websocket in","name":"Listen for PIR","server":"","client":"f65a484f.a5375","x":203,"y":253,"z":"9d438066.56d85","wires":[["e1f1bbde.57fdc8","4e1f5118.fb3c38","f0212b36.2d5d58"]]},{"id":"e1f1bbde.57fdc8","type":"debug","name":"PIR event","active":true,"console":"false","complete":"true","x":345,"y":415,"z":"9d438066.56d85","wires":[]},{"id":"c7d4c3a5.f9ba28","type":"debug","name":"","active":true,"console":"false","complete":"false","x":574,"y":388,"z":"9d438066.56d85","wires":[]}]
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/chapter2-hello-wot/client/ex-2.2-polling-temp-chart.html:
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/chapter2-hello-wot/client/ex-3.2b-actuator-ajax-form.html:
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1 |
2 |
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4 |
5 |
6 |
7 | Send Message to WoT Pi (AJAX)
16 | 17 |
18 |
19 |
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/chapter10-mashups/node-red/pir-http-twitter.json:
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1 | [{"id":"885a0bcd.7ad9a8","type":"http request","name":"get snapshot","method":"GET","ret":"bin","url":"http://devices.webofthings.io:9090/snapshot.cgi?user=snapshots&pwd=4MXfTSr0gH","x":782,"y":173,"z":"97f3d27.f8926b","wires":[["dfd3a912.773cb"]]},{"id":"cad032de.88225","type":"inject","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"x":126,"y":229,"z":"97f3d27.f8926b","wires":[["790d4158.a29f8"]]},{"id":"a6dfd96f.782b","type":"twitter out","twitter":"","name":"Tweet","x":1139,"y":148,"z":"97f3d27.f8926b","wires":[]},{"id":"dfd3a912.773cb","type":"function","name":"copy image","func":"msg.media = msg.payload;\nmsg.payload = 'Intruder Detected!';\nreturn msg;","outputs":1,"noerr":0,"x":985,"y":153,"z":"97f3d27.f8926b","wires":[["a6dfd96f.782b"]]},{"id":"1532e2c2.b307bd","type":"http request","name":"get PIR","method":"GET","ret":"obj","url":"http://localhost:8484/properties/pir","x":374,"y":98,"z":"97f3d27.f8926b","wires":[["79d3d9fa.e2ae18","e4e3834f.36ea8"]]},{"id":"790d4158.a29f8","type":"function","name":"add headers","func":"msg.headers = {\n'Accept' : 'application/json',\n'Authorization' : 'cKXRTaRylYWQiF3MICaKndG4WJMcVLFz'\n}\nreturn msg;","outputs":1,"noerr":0,"x":235,"y":143,"z":"97f3d27.f8926b","wires":[["1532e2c2.b307bd"]]},{"id":"79d3d9fa.e2ae18","type":"function","name":"check PIR value","func":"if(msg.payload[0].presence) {\n return msg;\n}\nelse return null;","outputs":1,"noerr":0,"x":589,"y":180,"z":"97f3d27.f8926b","wires":[["885a0bcd.7ad9a8"]]},{"id":"a6601dbf.1d9e3","type":"http request","name":"turn led on/off","method":"POST","ret":"obj","url":"http://localhost:8484/actions/ledState","x":780,"y":249,"z":"97f3d27.f8926b","wires":[["cfdc357b.2e6338"]]},{"id":"cfdc357b.2e6338","type":"debug","name":"","active":true,"console":"false","complete":"true","x":977,"y":220,"z":"97f3d27.f8926b","wires":[]},{"id":"e4e3834f.36ea8","type":"function","name":"prepare led msg","func":"msg.headers = {\n'Accept' : 'application/json',\n'Content-Type' : 'application/json',\n'Authorization' : 'cKXRTaRylYWQiF3MICaKndG4WJMcVLFz'\n}\nif(msg.payload) {\n msg.payload = {\"ledId\" : 1, \"state\" : true};\n return msg;\n} else {\n msg.payload = {\"ledId\" : 1, \"state\" : false};\n return msg;\n}\n","outputs":1,"noerr":0,"x":571,"y":238,"z":"97f3d27.f8926b","wires":[["a6601dbf.1d9e3"]]}]
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/chapter2-hello-wot/client/ex-2.3-websockets-temp-graph.html:
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/chapter7-implementation/part1-2-direct-gateway/plugins/internal/DHT22SensorPlugin.js:
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1 | var resources = require('./../../resources/model'),
2 | utils = require('./../../utils/utils.js');
3 |
4 | var interval, sensor;
5 | var model = resources.pi.sensors;
6 | var pluginName = 'Temperature & Humidity';
7 | var localParams = {'simulate': false, 'frequency': 5000};
8 |
9 | exports.start = function (params) {
10 | localParams = params;
11 | if (params.simulate) {
12 | simulate();
13 | } else {
14 | connectHardware();
15 | }
16 | };
17 |
18 | exports.stop = function () {
19 | if (params.simulate) {
20 | clearInterval(interval);
21 | } else {
22 | sensor.unexport();
23 | }
24 | console.info('%s plugin stopped!', pluginName);
25 | };
26 |
27 | function connectHardware() {
28 | var sensorDriver = require('node-dht-sensor');
29 | var sensor = {
30 | initialize: function () {
31 | return sensorDriver.initialize(22, model.temperature.gpio); //#A
32 | },
33 | read: function () {
34 | var readout = sensorDriver.read(); //#B
35 | model.temperature.value = parseFloat(readout.temperature.toFixed(2));
36 | model.humidity.value = parseFloat(readout.humidity.toFixed(2)); //#C
37 | showValue();
38 |
39 | setTimeout(function () {
40 | sensor.read(); //#D
41 | }, localParams.frequency);
42 | }
43 | };
44 | if (sensor.initialize()) {
45 | console.info('Hardware %s sensor started!', pluginName);
46 | sensor.read();
47 | } else {
48 | console.warn('Failed to initialize sensor!');
49 | }
50 | };
51 |
52 | function simulate() {
53 | interval = setInterval(function () {
54 | model.temperature.value = utils.randomInt(0, 40);
55 | model.humidity.value = utils.randomInt(0, 100);
56 | showValue();
57 | }, localParams.frequency);
58 | console.info('Simulated %s sensor started!', pluginName);
59 | };
60 |
61 | function showValue() {
62 | console.info('Temperature: %s C, humidity %s \%',
63 | model.temperature.value, model.humidity.value);
64 | };
65 |
66 | //#A Initialize the driver for DHT22 on GPIO 12 (as specified in the model)
67 | //#B Fetch the values from the sensors
68 | //#C Update the model with the new temperature and humidity values; note that all observers will be notified
69 | //#D Because the driver doesn’t provide interrupts, you poll the sensors for new values on a regular basis with a regular timeout function and set sensor.read() as a callback
70 |
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/chapter2-hello-wot/client/parse-device-full.html:
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1 |
2 |
3 |
4 |
5 |
6 |
7 | Browse a new device
16 | 17 | 21 | 22 |23 | 24 |
25 |
28 |
29 | HTTP Response headers
26 | 27 |
30 |
33 |
34 | JSON Response
31 | 32 |Device Metadata
35 |Metadata (general model used by this device) :
36 |Doc (human-readable data for this device):
37 | 38 | 83 | 84 | 85 | 86 | 87 | -------------------------------------------------------------------------------- /chapter9-sharing/social-auth/middleware/auth.js: -------------------------------------------------------------------------------- 1 | var acl = require('../config/acl.json'), //#A 2 | https = require('https'), 3 | fs = require('fs'); 4 | 5 | exports.socialTokenAuth = function () { 6 | return function (req, res, next) { 7 | if (isOpen(req.path)) { //#B 8 | next(); 9 | } else { 10 | var token = req.body.token || req.get('authorization') || req.query.token; 11 | if (!token) { 12 | return res.status(401).send({success: false, message: 'API token missing.'}); 13 | } else { 14 | checkUserAcl(token, req.path, function (err, user) { //#C 15 | if (err) { 16 | return res.status(403).send({success: false, message: err}); //#D 17 | } 18 | next(); //#E 19 | }); 20 | } 21 | } 22 | } 23 | }; 24 | 25 | function checkUserAcl(token, path, callback) { //#F 26 | var userAcl = findInAcl(function (current) { 27 | return current.token === token && current.resources.indexOf(path) !== -1; 28 | }); 29 | if (userAcl) { 30 | callback(null, userAcl); 31 | } else { 32 | callback('Not authorized for this resource!', null); 33 | } 34 | }; 35 | function findInAcl(filter) { 36 | return acl.protected.filter(filter)[0]; 37 | }; 38 | 39 | 40 | function isOpen(path) { //#G 41 | // Access to any CSS is open... 42 | if (path.substring(0, 5) === "/css/") return true; 43 | 44 | // Is the path an open path? 45 | if (acl.open.indexOf(path) !== -1) return true; 46 | } 47 | 48 | exports.checkUser = checkUser; 49 | function checkUser(socialUserId, token, callback) { //#H 50 | var result = findInAcl(function (current) { 51 | return current.uid === socialUserId; //#I 52 | }); 53 | if (result) { 54 | result.token = token; //#J 55 | callback(null, result); 56 | } else { 57 | callback('User ' + socialUserId + ' not found! Did you add it to acl.json?', null); 58 | } 59 | }; 60 | 61 | exports.getToken = getToken; 62 | function getToken(socialUserId, callback) { 63 | var result = findInAcl(function (current) { 64 | return current.uid === socialUserId; 65 | }); 66 | if (result) { 67 | callback(null, result); 68 | } else { 69 | callback('User ' + socialUserId + ' not found! Did you add it to acl.json?', null); 70 | } 71 | }; 72 | 73 | 74 | //#A Require your ACL config file 75 | //#B If the request is for an open path, call the next middleware 76 | //#C Otherwise, get the access token and check the ACL for this token 77 | //#D If there’s an error, return a 403 Forbidden status code 78 | //#E Otherwise, the user is good to go, and you call the next middleware 79 | //#F Can we find a user with the given token and the given path, for example, /temp? 80 | //#G Handle open resources 81 | //#H Called by facebook.js when a user is authenticated 82 | //#I If the user ID you got from Facebook is present in your ACL, you have a winner! 83 | //#J Store the user token to allow them to make subsequent calls to resources they can access 84 | -------------------------------------------------------------------------------- /chapter7-implementation/part1-2-direct-gateway/plugins/external/coapPlugin.js: -------------------------------------------------------------------------------- 1 | var utils = require('./../../utils/utils.js'), 2 | resources = require('./../../resources/model'); 3 | 4 | var interval, me, pluginName, pollInterval; 5 | var localParams = {'simulate': false, 'frequency': 5000}; 6 | 7 | function connectHardware() { 8 | var coap = require('coap'), 9 | bl = require('bl'); //#A 10 | 11 | var sensor = { 12 | read: function () { //#B 13 | coap 14 | .request({ //#C 15 | host: 'localhost', 16 | port: 5683, 17 | pathname: '/co2', 18 | options: {'Accept': 'application/json'} 19 | }) 20 | .on('response', function (res) { //#D 21 | console.info('CoAP response code', res.code); 22 | if (res.code !== '2.05') 23 | console.log("Error while contacting CoAP service: %s", res.code); 24 | res.pipe(bl(function (err, data) { //#E 25 | var json = JSON.parse(data); 26 | me.value = json.co2; 27 | showValue(); 28 | })); 29 | }) 30 | .end(); 31 | } 32 | }; 33 | pollInterval = setInterval(function () { //#F 34 | sensor.read(); 35 | }, localParams.frequency); 36 | }; 37 | 38 | function configure() { //#G 39 | utils.addDevice('coapDevice', 'A CoAP Device', 40 | 'A CoAP Device', 41 | { 42 | 'co2': { 43 | 'name': 'CO2 Sensor', 44 | 'description' : 'An ambient CO2 sensor', 45 | 'unit': 'ppm', 46 | 'value': 0 47 | } 48 | }); 49 | me = resources.things.coapDevice.sensors.co2; 50 | pluginName = resources.things.coapDevice.name; 51 | }; 52 | //#A Require the CoAP and BL library, a Buffer helper 53 | //#B Create a sensor object and give it a read function 54 | //#C The read function wraps a coap over UDP request with the enclosed parameters; replace localhost with the IP of the machine you’re simulating the CoAP device from (e.g., your laptop) 55 | //#D When CoAP device sends the result, the on response event is triggered 56 | //#E Fetch the results and update the model 57 | //#F Poll the CoAP device for new CO2 readings on a regular basis 58 | //#G Add the resources managed by this plugin to the model 59 | 60 | 61 | exports.start = function (params, app) { 62 | localParams = params; 63 | configure(app); 64 | 65 | if (params.simulate) { 66 | simulate(); 67 | } else { 68 | connectHardware(); 69 | } 70 | }; 71 | 72 | exports.stop = function () { 73 | if (params.simulate) { 74 | clearInterval(interval); 75 | } else { 76 | clearInterval(pollInterval); 77 | } 78 | console.info('%s plugin stopped!', pluginName); 79 | }; 80 | 81 | function simulate() { 82 | interval = setInterval(function () { 83 | me.value = utils.randomInt(0, 1000); 84 | showValue(); 85 | }, localParams.frequency); 86 | console.info('Simulated %s sensor started!', pluginName); 87 | }; 88 | 89 | function showValue() { 90 | console.info('CO2 Level: %s ppm', me.value); 91 | }; -------------------------------------------------------------------------------- /chapter7-implementation/part3-cloud/plug-with-control.js: -------------------------------------------------------------------------------- 1 | var mqtt = require('mqtt'); 2 | var config = require('./config.json'); 3 | 4 | var thngId=config.thngId; 5 | var thngUrl='/thngs/'+thngId; 6 | var thngApiKey=config.thngApiKey; 7 | 8 | var status=false; 9 | var updateInterval; 10 | 11 | var client = mqtt.connect("mqtts://mqtt.evrythng.com:8883", { 12 | username: 'authorization', 13 | password: thngApiKey 14 | }); 15 | 16 | client.on('connect', function () { 17 | client.subscribe(thngUrl+'/properties/'); 18 | client.subscribe(thngUrl+'/actions/all'); // #A 19 | updateProperty('livenow',true); 20 | if (! updateInterval) updateInterval = setInterval(updateProperties, 5000); 21 | }); 22 | 23 | client.on('message', function(topic, message) { 24 | var resources = topic.split('/'); 25 | if (resources[1] && resources[1] === "thngs"){ // #B 26 | if (resources[2] && resources[2] === thngId){ // #C 27 | if (resources[3] && resources[3] === "properties"){ //#D 28 | var property = JSON.parse(message); 29 | console.log('Property was updated: '+property[0].key+'='+property[0].value); 30 | } else if (resources[3] && resources[3] === "actions"){ //#E 31 | var action = JSON.parse(message); 32 | handleAction(action); 33 | } 34 | } 35 | } 36 | }); 37 | 38 | function handleAction(action) { 39 | switch(action.type) { // #F 40 | case '_setStatus': 41 | console.log('ACTION: _setStatus changed to: '+action.customFields.status); // #G 42 | status=Boolean(action.customFields.status); 43 | updateProperty ('status',status); 44 | /* Do something else too */ 45 | break; 46 | case '_setLevel': 47 | console.log('ACTION: _setLevel changed to: '+action.customFields.level); 48 | break; 49 | default: 50 | console.log('ACTION: Unknown action type: '+action.type); 51 | break; 52 | } 53 | } 54 | 55 | //#A Subscribe to all actions on this thing 56 | //#B Verify if the MQTT message is on a Thng 57 | //#C Verify if the message is for the current Thng 58 | //#D Check if a property was changed; if so display it 59 | //#E Was it an action? If so call handleAction() 60 | //#F Check the type of this action 61 | //#G If action type is _setStatus, display the new value and do something with it 62 | 63 | 64 | function updateProperties() { 65 | var voltage = (219.5 + Math.random()).toFixed(3); // #H 66 | updateProperty ('voltage',voltage); 67 | 68 | var current = (Math.random()*10).toFixed(3); // #I 69 | if (status==false) current = 0.001; 70 | updateProperty ('current',current); 71 | 72 | var power = (voltage * current * (0.6+Math.random()/10)).toFixed(3); // #J 73 | updateProperty ('power',power); 74 | } 75 | 76 | function updateProperty(property,value) { 77 | client.publish(thngUrl+'/properties/'+property, '[{"value": '+value+'}]'); 78 | } 79 | 80 | process.on('SIGINT', function() { 81 | updateProperty('livenow',false); 82 | clearInterval(updateInterval); 83 | client.end(); 84 | process.exit(); 85 | }); -------------------------------------------------------------------------------- /chapter2-hello-wot/client/ex-4-parse-device.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |Browse a new device
17 | 18 | 22 | 23 |Device Metadata
24 | 25 |26 | Metadata. A general model used by this device can be found here:
27 | 28 | 29 |30 | Documentation. A human-readable documentation specifically for this device can be found here:
31 | 32 | 33 |34 | Sensors. The sensors offered by this device: 35 | 36 |
37 | 38 |-
39 |
Compare my Weather WoT Mashup
76 | 77 | 78 |
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212 | WoT UI
210 |Control any Web Thing!
211 |
215 | Web Thing Controller
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/LICENSE:
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2 | Version 2.0, January 2004
3 | http://www.apache.org/licenses/
4 |
5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
6 |
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/chapter3-node-js/hello-modules/.idea/workspace.xml:
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1 |
2 |
98 |
341 |
99 |
100 |
103 |
140 |
339 |
340 | My WoT Plug
101 | 102 |103 |
Actions
104 |
105 |
124 |
125 |
126 | _setStatus
106 | 107 | 123 |Response
127 | 128 |
129 |
138 |
139 |
130 |
137 |
131 |
133 | DEBUG (Show HTTP Response)
132 |
134 |
135 |
136 | 140 |
Properties
141 | 142 |-
143 |
- 144 | 0.0 145 | power 146 | 147 |
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272 |
- 273 | 0 274 | voltage 275 | 276 |
- 277 | 0 278 | current 279 | 280 |
- 281 | false 282 | status 283 | 284 |
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5 |
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194 |
- 195 |
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198 |
- 199 |