Support de cours sur Azure au Cnam d'Aymeric Weinbach mobile services

1. Cnam Azure
ZeCloud
17/01/2014

2. Windows Azure Mobile Services

3. Multi-Platform Apps

4. You don’t need a different Mobile Service
for each platform!

5. Connect them all!

6. Cross-Platform Support

7. Cross-Platform Support

8. Multi-Device Push

9. Windows Store
Single Platform Push Notifications
push.wns.sendToastText04(item.channel, {text1: text}, … );
Windows Phone
push.mpns.sendFlipTile(item.channel, {title: text}, …);
iOS
push.apns.send(item.token, { alert: text, payload:
inAppMessage: Details }}, …);
Android
push.gcm.send(item.registrationId, item.text, …);
{

11. Multi-Platform Push Notifications
function sendNotifications() {
var deviceInfoTable = tables.getTable('DeviceInfo');
deviceInfoTable.where({ userId : user.userId }).read({
success: function(deviceInfos){
deviceInfos.forEach(function(deviceInfo){
if (deviceInfo.uuid != request.parameters.uuid) {
if (deviceInfo.pushToken != null && deviceInfo.pushToken != 'SimulatorToken') {
if (deviceInfo.platform == 'iOS') {
push.apns.send(deviceInfo.pushToken, {
alert: "New something created"
} , { //success / error block});
} else if (deviceInfo.platform == 'Android') {
push.gcm.send(deviceInfo.pushToken, "New something created", { success / error block});
}
}
}
});
}
});
}

12. Don’t forget to check the response on error
(or getFeedback for APNS)
Also, check out
Delivering Push Notifications to Millions of
Devices – Friday @12pm

13. Virtual Tables

14. Create a table
Use it’s endpoint
Don’t call request.Execute

15. Custom API

16. •
•
•
•
•
•
•
•

17. Custom API Demo

18. Talking to Azure Storage

19. It’s doable
It’s not perfect
Scripts
and the Azure module

20. Reading Tables
var azure = require('azure');
function read(query, user, request) {
var accountName = 'accountname';
var accountKey = 'Accountkey------------nKHDsW2/0Jzg==';
var host = accountName + '.table.core.windows.net';
var tableService = azure.createTableService(accountName, accountKey, host);
tableService.queryTables(function (error, tables) {
if (error) {
request.respond(500, error);
} else {
request.respond(200, tables);
}
});
}

21. var azure = require('azure');
Reading Table Rows
function read(query, user, request) {
var accountName = 'accountname';
var accountKey = 'Accountkey------------nKHDsW2/0Jzg==';
var host = accountName + '.table.core.windows.net';
var tableService = azure.createTableService(accountName, accountKey, host);
var tq = azure.TableQuery
.select()
.from(request.parameters.table);
tableService.queryEntities(tq, function (error, rows) {
if (error) {
request.respond(500, error);
} else {
request.respond(200, rows)
}
});
}

22. var azure = require('azure');
function insert(item, user, request) {
Creating Containers
var accountName = 'accountname';
var accountKey = 'Accountkey------------nKHDsW2/0Jzg==';
var host = accountName + '.blob.core.windows.net';
var blobService = azure.createBlobService(accountName, accountKey, host);
if (request.parameters.isPublic == 1) {
blobService.createContainerIfNotExists(item.containerName
,{publicAccessLevel : 'blob'}
, function (error) {
if (!error) { request.respond(200, item); } else { /* error */ request.respond(500);}
});
} else {
blobService.createContainerIfNotExists(item.containerName, function (error) {
if (!error) { request.respond(200, item); } else { /*error */ request.respond(500);
}
});
}
}

23. Reading and “Creating” Blobs
var azure = require('azure'), qs = require('querystring');
function insert(item, user, request) {
var accountName = 'accountname';
var accountKey = 'Accountkey------------nKHDsW2/0Jzg==';
var host = accountName + '.blob.core.windows.net';
var blobService = azure.createBlobService(accountName, accountKey, host);
var sharedAccessPolicy = {
AccessPolicy: {
Permissions: 'rw', //Read and Write permissions
Expiry: minutesFromNow(5)
}
};
var sasUrl = blobService.generateSharedAccessSignature(request.parameters.containerName,
request.parameters.blobName, sharedAccessPolicy);
var sasQueryString = { 'sasUrl' : sasUrl.baseUrl + sasUrl.path + '?' + qs.stringify(sasUrl.queryString) };
request.respond(200, sasQueryString);
}
function minutesFromNow(minutes) {
var date = new Date()
date.setMinutes(date.getMinutes() + minutes);
return date;
}

24. Storage Demo

25. Talking REST

26. http://Mobileservice.azure-mobile.net/tables/*
Action
HTTP Verb
URL Suffix
Create
POST
/TodoItem
Retrieve
GET
/TodoItem?$filter=id%3D42
Update
PATCH
/TodoItem/id
Delete
DELETE
/TodoItem/id

27. JSON Value
T-SQL Type
Numeric values (integer,
decimal, floating point)
Float
Boolean
Bit
DateTime
DateTimeOffset(3)
String
Nvarchar(max)

28. Postman
&
Runscope Demo

29. Sending Emails

31. //var crypto = require('crypto');
//item.tempId = new Buffer(crypto.randomBytes(16)).toString('hex');
Sending an Email
function sendEmail(item) {
var sendgrid = new SendGrid('myaccount@azure.com', 'mypassword');
var email = {
to : item.email,
from : 'from-me@chrisrisner.com',
subject : 'Welcome to MyApp',
text: 'Thanks for installing My App!
Click this link to verify:nn'
+ 'http://myapp.azurewebsites.net/activate.html?id=' + item.id + '&tid=' + item.tempId,
createDate : new Date()
};
sendgrid.send({
to: item.email,
from: email.from,
subject: email.subject,
text: email.text
}, function(success, message) {
// If the email failed to send, log it as an error so we can investigate
if (!success) {
console.error(message);
} else {
saveSentEmail(email);
}
});
}

32. Setting up SendGrid Demo

33. The CLI

34. SOME
It’s awe

35. CLI Demo

36. Service Filters and DelegatingHandlers

37. Client side
Intercepts requests
Intercepts responses

38. Sending Version Info with Each Request
- (void)handleRequest:(NSURLRequest *)request next:(MSFilterNextBlock)next response:(MSFilterResponseBlock)response
{
MSFilterResponseBlock wrappedResponse = ^(NSHTTPURLResponse *innerResponse, NSData *data, NSError *error) {
response(innerResponse, data, error);
};
// add additional versioning information to the querystring for versioning purposes
NSString *append = [NSString stringWithFormat:@"build=%@&version=%@", self.build, self.version];
NSURL *url = nil;
NSRange range = [request.URL.absoluteString rangeOfString:@"?"];
if (range.length > 0) {
url = [NSURL URLWithString:[NSString stringWithFormat:@"%@&%@&p=iOS", request.URL.absoluteString, append]];
}
else {
url = [NSURL URLWithString:[NSString stringWithFormat:@"%@?%@&p=iOS", request.URL.absoluteString, append]];
}
NSMutableURLRequest *newRequest = [request mutableCopy];
newRequest.URL = url;
next(newRequest, wrappedResponse);
}

39. DelegatingHandlers are Service Filters
public static MobileServiceClient MobileService = new MobileServiceClient(
"https://<your subdomain>.azure-mobile.net/",
"<your app key>",
new VersionHandler()
);
using System;
using System.Net.Http;
using System.Threading.Tasks;
namespace WindowsStore
{
public class VersionHandler : DelegatingHandler
{
protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request,
System.Threading.CancellationToken cancellationToken)
{
request.RequestUri = new Uri(request.RequestUri.AbsoluteUri.ToString() + "?version=v2");
return base.SendAsync(request, cancellationToken);
}
}
}

40. Script Versioning

41. Checking the Version in Scripts
function insert(item, user, request) {
if (request.parameters.build < 2.0) {
item.description = 'Not entered';
}
request.execute({
success : function() {
if (request.parameters.build < 2.0) {
delete item.description;
}
request.respond();
}
});
}

42. For more on versioning, check out
Going Live and Beyond with Windows
Azure Mobile Services
Friday @ 10:30 am

43. Talking Twitter

44. v1 is dead
v1.1 is hard

45. function generateOAuthSignature(method, url, data){
var index = url.indexOf('?');
if (index > 0)
url = url.substring(0, url.indexOf('?'));
var signingToken = encodeURIComponent('Your Consumer Secret') + "&" + encodeURIComponent('Your Access Token Secret');
var keys = [];
for (var d in data){
if (d != 'oauth_signature') {
console.log('data: ' , d);
keys.push(d);
}
}
keys.sort();
var output = "GET&" + encodeURIComponent(url) + "&";
var params = "";
keys.forEach(function(k){
params += "&" + encodeURIComponent(k) + "=" + encodeURIComponent(data[k]);
});
params = encodeURIComponent(params.substring(1));
return hashString(signingToken, output+params, "base64");
}
function hashString(key, str, encoding){
var hmac = crypto.createHmac("sha1", key);
hmac.update(str);
return hmac.digest(encoding);
}
function generateNonce() {
var code = "";
for (var i = 0; i < 20; i++) {
code += Math.floor(Math.random() * 9).toString();
}
return code;
}
Part 1: The Helpers

46. var crypto = require('crypto');
var querystring = require('querystring');
function read(query, user, request) {
var result = {
id: query.id,
identities: user.getIdentities(),
userName: ''
};
var identities = user.getIdentities();
var userId = user.userId;
var twitterId = userId.substring(userId.indexOf(':') + 1);
//API 1.0
//url = 'https://api.twitter.com/1/users/show/' + twitterId + '.json';
//API 1.1
var url = 'https://api.twitter.com/1.1/users/show.json?user_id=' + twitterId;
var key = 'This is your consumer key';
var nonce = generateNonce();
var sigmethod = 'HMAC-SHA1';
var version = '1.0';
var twitterAccessToken = identities.twitter.accessToken;
var oauth_token = 'The Access Token';
var seconds = new Date() / 1000;
seconds = Math.round(seconds);
var requestType = 'GET';
var oauthData = { oauth_consumer_key: key, oauth_nonce: nonce, oauth_signature:null,
oauth_signature_method: sigmethod, oauth_timestamp: seconds,
oauth_token: oauth_token, oauth_version: version };
var sigData = {};
for (var k in oauthData){
sigData[k] = oauthData[k];
}
sigData['user_id'] = twitterId;
Part 2: The Work (part 1)

47. var sig = generateOAuthSignature('GET', url, sigData);
oauthData.oauth_signature = sig;
var oauthHeader = "";
for (k in oauthData){
oauthHeader += ", " + encodeURIComponent(k) + "="" + encodeURIComponent(oauthData[k]) + """;
}
oauthHeader = oauthHeader.substring(1);
var authHeader = 'OAuth' + oauthHeader;
//Generate callback for response from Twitter API
var requestCallback = function (err, resp, body) {
if (err || resp.statusCode !== 200) {
console.error('Error sending data to the provider: ', err);
request.respond(statusCodes.INTERNAL_SERVER_ERROR, body);
} else {
try {
var userData = JSON.parse(body);
if (userData.name != null)
result.UserName = userData.name;
else
result.UserName = "can't get username";
request.respond(200, [result]);
} catch (ex) {
console.error('Error parsing response from the provider API: ', ex);
request.respond(statusCodes.INTERNAL_SERVER_ERROR, ex);
}
}
}
//Create the request and execute it
var req = require('request');
var reqOptions = {
uri: url,
headers: { Accept: "application/json" }
};
if (authHeader != null)
reqOptions.headers['Authorization'] = authHeader;
req(reqOptions, requestCallback);
}
Part 2.2: The Work

48. That was terrible
Do this

49. The Easy Way
exports.post = function(request, response) {
var twitter = require(‘ctwitter.js’);
twitter.init(’consumer key',’consumer secret');
twitter.tweet(request.body.tweettext, request.user, request);
}
Get the script here: http://bit.ly/14b73Gg

50. Script Source Control

51. Enable on dashboard
Creates Git repo
Changes push from client

53. Shared Scripts

54. require(‘jsfile.js');
*Need a config change on update (for now)

55. Auth Part 1: Custom

56. Pass creds in
Validate
Hash your salt
Create a JWT

57. Part 1: The Helpers

58. Part 2: The Work

59. Part 3: Signing In

60. …or just use Auth0
http://aka.ms/authZeroZumo
Check out
Who’s that User? – Friday @ 2pm

61. Auth Part 2: Identity Caching

62. Storing Credentials in .NET

63. Getting and Setting Credentials

64. Auth Part 3: Expired Tokens

65. Expiration Flow

66. DelegationHandlers (again)

67. ServiceFilter (iOS)

68. Auth Demo

69. One-to-Many

70. Client
Server

71. Client

72. Server 1

73. Server 2

74. Remember API call #s when
considering client side one-to-many

75. Paging Data

76. Client
Server

77. Client

78. Server Scripts

79. On-Prem

80. On-Prem Solutions in Windows Azure
Data
Synchronization
SQL Data Sync
Application-Layer
Connectivity & Messaging
Service Bus
Secure Point-to-Site Network
Connectivity
Windows Azure Virtual Network
Secure Site-to-Site
Network Connectivity
Windows Azure Virtual Network

82. Windows Azure
Point-to-Site VPNs
<subnet 1>
<subnet 2>
<subnet 3>
DNS
Server
On-premises
VPN
Gateway
Route-based
VPN
Your datacenter
Individual
computers behind
corporate firewall
Virtual Network

83. Site-to-Site Connectivity
•
•
On-ramp for migrating services to the cloud
•
Windows Azure
Extend your premises to the cloud securely
Use your on-prem resources in Azure (monitoring, AD, …)
On-premises
<subnet 2>
<subnet 3>
DNS
Server
VPN
Gateway
Hardware VPN or
Windows RRAS
Your datacenter
<subnet 1>
Virtual Network