XREST Protocol
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  • 1. eXtensible REST Services Protocol Plug-in Architectural Style for the Cloud http://xrest.googlecode.com
  • 2. Protocol Objectives • Running the Web as Platform • Unify the Experience and Implementation of Programmable Web Services Pub/Sub Browser Blog Plug-in Social Twitter Desktop Network Plug-in ... Mail Your Tool
  • 3. Protocol Model Clients: • Consume services on the host • Add plug-in references (extensions) to the host extension registry Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 4. Protocol Model Hosts: • Restful application (HTTP: RFC2616) • Extension registry (AtomPub: RFC5023) • Callback to plug-ins (Web Hooks: http://webhooks.org) Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 5. Protocol Model Plug-ins: • Receive callback parameters from the host • Can decorate the host response to the client. Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 6. Protocol Runtime POST Plug-in A extension Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 7. Protocol Runtime GET Plug-in A acknowledgement Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 8. Protocol Runtime OK Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 9. Protocol Runtime OK Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 10. Protocol Runtime Browser Plug-in A Desktop Host Plug-in B ... Plug-in C The service has been extended
  • 11. Protocol Runtime REST call Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 12. Protocol Runtime Compute response Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 13. Protocol Runtime POST response body + extension header Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 14. Protocol Runtime Decorated response body Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 15. Protocol Runtime Decorated response body Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  • 16. Scheduling Asynchronous Callbacks: • May be executed concurrently • Cannot decorate the host response Synchronous Callbacks: • Sequential execution • Can decorate the host response • Flexible to failures
  • 17. Resources Specification: http://tiny.cc/xrest Questions and feedbacks: xrest@googlegroups.com More infos: http://xrest.googlecode.com