Hatena Goes Realtime #kansaipm 14

How does Hatena do with so-called Realtime-Web, especially about Hatena::Notify and APNs.

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
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
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?