eXtensible REST Services Protocol
Plug-in Architectural Style for the Cloud
http://xrest.googlecode.com
Protocol Objectives

• Running the Web as Platform
• Unify the Experience and Implementation of
  Programmable Web Service...
Protocol Model

Clients:
 • Consume services on the host
 • Add plug-in references (extensions) to the host
   extension r...
Protocol Model

Hosts:
 • Restful application (HTTP: RFC2616)
 • Extension registry (AtomPub: RFC5023)
 • Callback to plug...
Protocol Model


Plug-ins:
 • Receive callback parameters from the host
 • Can decorate the host response to the client.

...
Protocol Runtime


               POST Plug-in A
               extension

     Browser                     Plug-in A


  ...
Protocol Runtime


                            GET Plug-in A
                          acknowledgement


     Browser     ...
Protocol Runtime


                                 OK



     Browser              Plug-in A


     Desktop       Host   ...
Protocol Runtime




                          OK

     Browser                   Plug-in A


     Desktop       Host     ...
Protocol Runtime




     Browser                          Plug-in A


     Desktop       Host               Plug-in B


 ...
Protocol Runtime



               REST call

     Browser                      Plug-in A


     Desktop               Hos...
Protocol Runtime



                          Compute
                          response

     Browser                    ...
Protocol Runtime

                                POST
                           response body +
                        ...
Protocol Runtime

                                  Decorated
                               response body


     Browser ...
Protocol Runtime



                        Decorated
                     response body
     Browser                     ...
Scheduling



             Asynchronous Callbacks:
              • May be executed concurrently
              • Cannot dec...
Resources


Specification: http://tiny.cc/xrest



Questions and feedbacks:
xrest@googlegroups.com

More infos:
http://xre...
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XREST Protocol

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eXtensible RESTful Services Protocol

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XREST Protocol

  1. 1. eXtensible REST Services Protocol Plug-in Architectural Style for the Cloud http://xrest.googlecode.com
  2. 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. 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. 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. 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. 6. Protocol Runtime POST Plug-in A extension Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  7. 7. Protocol Runtime GET Plug-in A acknowledgement Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  8. 8. Protocol Runtime OK Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  9. 9. Protocol Runtime OK Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  10. 10. Protocol Runtime Browser Plug-in A Desktop Host Plug-in B ... Plug-in C The service has been extended
  11. 11. Protocol Runtime REST call Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  12. 12. Protocol Runtime Compute response Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  13. 13. Protocol Runtime POST response body + extension header Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  14. 14. Protocol Runtime Decorated response body Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  15. 15. Protocol Runtime Decorated response body Browser Plug-in A Desktop Host Plug-in B ... Plug-in C
  16. 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. 17. Resources Specification: http://tiny.cc/xrest Questions and feedbacks: xrest@googlegroups.com More infos: http://xrest.googlecode.com
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