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Open Source XMPP for Cloud Services

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Build next generation cloud services using XMPP and Open Source tools.

Build next generation cloud services using XMPP and Open Source tools.

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  • Transcript

    • 1. Open Source XMPP for 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 Talk
      • Brief XMPP and cloud computing overview
      • Problems in cloud architectures; how XMPP can help
      • Open Source tools
      • Tips and tricks
    • 5. XMPP (Jabber) Overview
      • The 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 Cloud Computing?
      • 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 Problems
      • Polling 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. SOAP Ubiquity Innovative Features Ease Security Performance SOAP XMPP
    • 11. XMPP Cloud Architecture
    • 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 class ExternalWeatherComponent {
      • public static void main(String[] args) {
      • ExternalComponentManager manager =
      • new ExternalComponentManager(&quot;example.com&quot;, 5275);
      • // Set the secret key for this component, for authentication
      • manager.setSecretKey(&quot;weather&quot;, &quot;test&quot;);
      • // Register this component to a subdomain of the server
      • manager.addComponent(&quot;weather&quot;, new WeatherComponent());
      • //... Component will now start processing requests
      • }
      • }
    • 16. WeatherComponent.java
      • public class WeatherComponent implements Component {
      • public String getName() {
      • return &quot;US Weather&quot;;
      • }
      • 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 Doc Sharing
    • 18. Example: Twitter Fire Hose
      • 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 Entry Link
      • Email/IM: [email_address]
      • www.igniterealtime.org

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