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![ExternalWeatherComponent.java public class ExternalWeatherComponent { public static void main(String[] args) { ExternalComponentManager manager = new ExternalComponentManager("example.com", 5275); // Set the secret key for this component, for authentication manager.setSecretKey("weather", "test"); // Register this component to a subdomain of the server manager.addComponent("weather", new WeatherComponent()); //... Component will now start processing requests } }](https://image.slidesharecdn.com/oscon2008cloudservicesxmpp-1216922007853475-8/85/Open-Source-XMPP-for-Cloud-Services-15-320.jpg)
![Questions? Blog Entry Link Email/IM: [email_address] www.igniterealtime.org](https://image.slidesharecdn.com/oscon2008cloudservicesxmpp-1216922007853475-8/85/Open-Source-XMPP-for-Cloud-Services-20-320.jpg)
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Open Source XMPP for Cloud Services
- 1. Open Source XMPPfor Cloud Services Matt Tucker, CTO Jive Software
- 2. Who am I?Member of the XMPP Standards Foundation and former chair of the board Behind Smack and Openfire at igniterealtime.org Keep giving talks about XMPP at OSCON…
- 3.
- 4. In This TalkBrief XMPP and cloud computing overview Problems in cloud architectures; how XMPP can help Open Source tools Tips and tricks
- 5. XMPP (Jabber) OverviewThe open protocol for instant messaging (it’s fair to declare victory) IETF standard and a robust org developing the protocol: XMPP Standards Foundation Simple for developers and very deep Open Source toolset and heritage
- 6. XMPP Building Blocks<iq to=‘weather.jivesoftware.com’ type=‘get’ id=‘123’><query xmlns=‘jabber:weather’><city>pdx</city></query></iq> <iq from=‘weather.jivesoftware.com’> type=‘result’ id=‘123’><query xmlns=‘jabber:weather’><weather>Not Raining!</weather></query></iq> Exchange information and perform queries using a request / response protocol. IQ <message to='matt@jivesoftware.com' from='gato@igniterealtime.org’> <body>How's that presentation going?</body> </message> Send data between users Message <presence from=‘matt@jivesoftware.com’> <status>Giving a talk...</status> </presence> Send presence data or manage presence subscriptions Presence Example Description
- 7. What is CloudComputing? Predominately based on web services (SOAP, REST, etc) Exploding in popularity – a critical trend of software architectures Started with simple services; now growing complex
- 8. Cloud Service Example:Salesforce.com Uses SOAP (not XML-RPC or REST) Huge percentage of traffic is polling for updates Introduced “Outbound Messaging” to cope with polling – but there are firewall issues
- 9. Cloud Architecture ProblemsPolling doesn’t scale and isn’t real-time Need two-way data exchange with easy firewall traversal Web services are feature poor (presence, binary data, etc) SOAP is what’s needed for complex services, but it’s overly complicated Thesis: web services are great for simple cloud services; XMPP is better for complex cloud services
- 10. XMPP vs. SOAPUbiquity Innovative Features Ease Security Performance SOAP XMPP
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- 12. Open Source Tools:Server Openfire Most popular XMPP server, with over 1 million downloads In production with many cloud services Massively scalable Support for even strict firewall environments -- BOSH
- 13. Open Source Tools:Client APIs Dozens of libraries in every major programming language – start at jabber.org Java: Smack library from igniterealtime.org Flex: XIFF library from igniterealtime.org Javascript: JSJac, dojox.xmpp
- 14. Open Source Tools:Cloud Components Whack (Java) – simple and high level API Components use XEP-114 (easy)
- 15. ExternalWeatherComponent.java public classExternalWeatherComponent { public static void main(String[] args) { ExternalComponentManager manager = new ExternalComponentManager("example.com", 5275); // Set the secret key for this component, for authentication manager.setSecretKey("weather", "test"); // Register this component to a subdomain of the server manager.addComponent("weather", new WeatherComponent()); //... Component will now start processing requests } }
- 16. WeatherComponent.java public classWeatherComponent implements Component { public String getName() { return "US Weather"; } public void processPacket(Packet packet) { // Get the request packet here, parse it and return a reply } public void initialize(JID jid, ComponentManager componentManager) { } public void shutdown() { } }
- 17. Example: Clearspace DocSharing
- 18. Example: Twitter FireHose Uses XMPP to provide access to all status updates, which would be impossible using web services polling Only provided to a small number of services (most recently Gnip)
- 19. Openfire Cloud Services:Tips and Tricks External components allow for hot-deploy of new or updated services Run on separate hardware for scalability Openfire allows components to connect multiple times for scalability and redundancy Epoll on Linux provides great performance Ad-hoc command available to listen for all traffic Use XMPP federation for federating cloud services
- 20. Questions? Blog EntryLink Email/IM: [email_address] www.igniterealtime.org