Hatena Goes Realtime #kansaipm 14

Transcript

1. Hatena Goes Realtime Kansai.pm #14 2011-11-26 (Sat.) @Hatena Kyoto

2. Realtime Web Push Notification Hatena::Notify APNs in Hatena

3. Kentaro Kuribayashi id:antipop @kentaro http://kentaro.hatenablog.com/

4. PrePAN Social reviewing site for Perl Modules @YAPC::Asia 2011 Application

   Engineer Working for Hatena, Inc. Media Artist To be popular with girls...

5. Perl Emacs Kyoto Momoclo Architecture Jazz Sake Chinese Tea Utsuwa

   Cooking Arduino Gastronomade Nabokov Media Art Girls

6. Realtime Web

7. Rapid Communication to be... Social Frequent Intimate More Looser

8. Twitter Facebook Hatena Google+

9. Laptops Smartphones Tablets

10. Push Notification

11. iPhone Android APNs: Apple Push Notification Service C2DM: Cloud to

    Device Messaging

12. iPhone APNs: Apple Push Notification Service

13. iOS4 to iOS5 • Alert → Banner • Doesn’t disturb

    interaction • Notification Center
14. None

15. APNs in 3 Minutes

16. •Provider (Web Service) •APNs •Device (iPhone) •Client App (Application)

17. 1. Device requests token 2. APNs gives it 3. Device

    (Client App)register it to Provider

18. 1. Provider sends notification with token 2. APNs verifies it

    and push notification to Device 3. Client App handles it

19. That’s All!

20. What you must implement: Client App Retrieves and register device

    token Provider Sends notification using the token

21. Hatena::Notify

22. Hatena::Notify

23. User adds ˒ to some entry ↓ Notification will be

    appear on “Global Header”

24. User comments on some entry ↓ Notification will be appear

    on “Global Header”

25. User starts following someone ↓ Notification will be appear on

    “Global Header”

26. Notification Center Hatena::Star Hatena::Blog UgoMemo::Hatena Hatena::Bookmark Hatena::Diary etc.

27. Applications just send notifications on each events Hatena::Notify is a

    hub of Hatena services

28. APNs in Hatena

29. Web Services Device +

30. ίϨφχ Questions with Images

31. None

32. 1. Services 2. Notification Center 3. Job Queue + Workers

    4. Daemon (apnsd) 5. APNs 6. iPhone

33. TheSchwartz with WorkerManager

34. 1. Services 2. Notification Center 3. Job Queue + Workers

    4. Daemon (apnsd) 5. APNs 6. iPhone

35. AnyEvent::MPRPC AnyEvent::APNS with daemontools

36. use AnyEvent::MPRPC; # server my $server = mprpc_server '127.0.0.1', '4423';

    $server->reg_cb( notify => sub { my ($res_cv, $params) = @_; # ... do something ... $res_cv->result($result); }, ); # client my $client = mprpc_client '127.0.0.1', '4423'; $client->call(notify => $params)->recv; AnyEvent::MPRPC

37. use AnyEvent::APNS; my $cv = AnyEvent->condvar; my $apns; $apns =

    AnyEvent::APNS->new( certificate => 'your apns certificate file', private_key => 'your apns private key file', on_error => sub { ... }, on_connect => sub { $apns->send($device_token => { aps => { alert => 'Message received from Bob', }, }); }, ); AnyEvent::APNS

38. 1. Opens socket to APNs 2. Writes notification data into

    it 3. Independent binary format

39. • Device Token • JSON-formatted Hash • aps (reserved) •

    alert / badge / sound • arbitrary keys

40. { aps => { alert => 'Something occurred!', badge =>

    1, sound => 'notification.wav', }, type => 'comment', foo => 'bar' }

41. To be sure to make connection persistent APNs may consider

    connections that are rapidly and repeatedly established and torn down as a denial-of-service attack. Upon error, APNs closes the connection on which the error occurred. https://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/CommunicatingWIthAPS/ CommunicatingWIthAPS.html#//apple_ref/doc/uid/TP40008194-CH101-SW1

42. $self->client->call(notify => { app_name => $self->app_name, device_token => pack('H*', $self-

    >device_token), payload => { aps => { alert => $message, badge => $badge, sound => $sound, }, subject => $self->subject || '', verb => $self->verb || '', }, })->recv; AnyEvent::MPRPC::Client

43. $self->server->reg_cb( notify => sub { my ($res_cv, $params) = @_;

    $params ||= {}; my $app_name = $params->{app_name}; my $device_token = $params->{device_token}; my $payload = $params->{payload}; my $connection = $self->connection($app_name); $res_cv->result( $connection->notify($device_token, $payload) ); }, ); AnyEvent::MPRPC::Server

44. • RPC using AE::MPRPC • Connection plooling • Some custom

    fields • subject •verb

45. • Notification cooperating with Web service • Scalable and stable

    system architecture • Combination of existing modules • Hold connections and make them persistent Recap

46. Any Questions?