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Advanced Seaside

E
ESUG

The document summarizes a presentation on the Seaside web framework. It discusses the core components of Seaside, including the request handler, session, and request context. It describes new features in Seaside 3.x like improved REST support, custom session tracking, and changes to document handlers and streaming. The presentation announces an upcoming Seaside sprint to contribute to its development.

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Advanced ESUG 2012 Ghent Aug 30, 2012 Thursday, August 30, 12
Seaside 2.x Seaside Thursday, August 30, 12
Seaside 3.x Core Javascript JQuery Session Component Thursday, August 30, 12
What is Seaside-Core • “Seaside Meta” • Web Framework Framework • HTTP Abstraction • Servlet API • Rack • WSGI Thursday, August 30, 12
Why Seaside-Core • portable (dialect and server) • battle tested • objects, not strings • familiar objects • negligible overhead Thursday, August 30, 12
Seaside 3.x Core Component Thursday, August 30, 12
Seaside 3.x Core Component REST Thursday, August 30, 12
Seaside 3.x Core Component REST … Thursday, August 30, 12
WARequestHandler Request Response RH Thursday, August 30, 12
WARequestHandler /conferences /esug /2012 RH RH RH Thursday, August 30, 12
WARequestFilter RH Thursday, August 30, 12
WASession 2.8 • current request • jump to • last continuation • continuations • monitor •… Thursday, August 30, 12
WASession 3.x • continuations • properties • (document handlers) Thursday, August 30, 12
WARequestContext • request • response • handler stack Thursday, August 30, 12
Request Handler Stack 1 2 3 1 1 1 2 2 3 Thursday, August 30, 12
WAPathConsumer /conferences/esug/2012/… RH RH RH /esug/2012/… /2012/… /… Thursday, August 30, 12
WADispatcher ‘conferences’ -> aRequestHandler ‘sponsors’ -> aRequestHandler ‘…’ -> aRequestHanlder Thursday, August 30, 12
WASeverAdapter provides template methods for converting provides start and stop hooks provides easy integration with ser ver manager UI you don’t have to use it sets up request context XXRequest WARequest SA RH XXRespone WARespone WARequestContext Thursday, August 30, 12
Frank a micro framework inspired by Sinatra Thursday, August 30, 12
Seaside-REST Thursday, August 30, 12
Disclaimer • REST in this context simply means “pretty URLs” • pretty URLs for web services, not web applications • this will feel a little weird Thursday, August 30, 12
index <get> ^ ‘Hello World’ Thursday, August 30, 12
index <get> <path: ‘index.html’> ^ ‘Hello World’ Thursday, August 30, 12
indexHtml <get> <path: ‘index’> <produces: ‘text/html’> ^ ‘<h1>Hello World</h1>’ Accept: text/html Thursday, August 30, 12
indexXml <get> <path: ‘index’> <produces: ‘text/xml’> ^ ‘<hello><world/></hello>’ Accept: text/xml Thursday, August 30, 12
uploadXml <post> <consumes: ‘text/xml’> … Content-Type: text/xml Thursday, August 30, 12
uploadCsv <post> <consumes: ‘text/csv’> … Content-Type: text/csv Thursday, August 30, 12
getAllStartingAt: start limit: limit named: name <get> <path: ‘/{name}/_all_docs?start={start}&limit={limit}’> ... Thursday, August 30, 12
#shouldCacheRoutes Thursday, August 30, 12
WARestfulComponentFilter count: count <get> <path: '/{count}'> self startSessionWithRoot: (WACounter new count: count greaseInteger; yourself) Thursday, August 30, 12
Data Binding • XML or JSON canvas • Magritte-XML • Magritte-JSON Thursday, August 30, 12
Dialects • GemStone • Pharo • VAST Thursday, August 30, 12
Seaside 3.1 Thursday, August 30, 12
Session Tracking Fully Customizable • query fields • cookie only • cookie if supported, query field otherwise • cookie for browser, IP for crawler • SSL session id (*) • path parameter (*) Thursday, August 30, 12
Path Parameter • /;_s=KAAWl0x3c6KLnN6Q • doesn’t need to be hidden form parameter • required by some load balancers Thursday, August 30, 12
WAMain gone • specify initial continuation • subclass WASessionContinuation if you used to subclass WAMain Thursday, August 30, 12
WAPluggableActionContinuation • replace WAActionPhaseContinuation subclasses with WACallbackProcessingActionContinuation subclasses Thursday, August 30, 12
JSON • separate from JavaScript • various subtle bugs fixed • canvas API Thursday, August 30, 12
Streaming Redone • on demand flushing • continuation that flushes after rendering </head> • better portability to other servers Thursday, August 30, 12
HTML 5 •#multipleValuesCallback: Thursday, August 30, 12
Document Handlers • stored in session • no longer stored alongside sessions • _d Thursday, August 30, 12
Other News • Nick now part of core team • experimental Pharo 2.0 support • walkback should open at correct place in VW • platforms can implement optimized HTML escaping Thursday, August 30, 12
Help Wanted • Morphic Control panel for Pharo 2.0 Thursday, August 30, 12
Seaside Sprint • Friday at Vooruit • Saturday at Camp location • (Sunday) Thursday, August 30, 12
Seaside Sprint Sponsors • Reza Razavi • 2Rivers Thursday, August 30, 12
Links • https://github.com/marschall/esug-2012-presentation • http://ss3.gemstone.com/ss/frank • http://code.google.com/p/seaside/wiki/Seaside310Changelog • http://book.seaside.st/book/advanced/restful • http://code.google.com/p/seaside/wiki/SeasideRest Thursday, August 30, 12

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Advanced Seaside

  • 1. Advanced ESUG 2012 Ghent Aug 30, 2012 Thursday, August 30, 12
  • 2. Seaside 2.x Seaside Thursday, August 30, 12
  • 3. Seaside 3.x Core Javascript JQuery Session Component Thursday, August 30, 12
  • 4. What is Seaside-Core • “Seaside Meta” • Web Framework Framework • HTTP Abstraction • Servlet API • Rack • WSGI Thursday, August 30, 12
  • 5. Why Seaside-Core • portable (dialect and server) • battle tested • objects, not strings • familiar objects • negligible overhead Thursday, August 30, 12
  • 6. Seaside 3.x Core Component Thursday, August 30, 12
  • 7. Seaside 3.x Core Component REST Thursday, August 30, 12
  • 8. Seaside 3.x Core Component REST … Thursday, August 30, 12
  • 9. WARequestHandler Request Response RH Thursday, August 30, 12
  • 10. WARequestHandler /conferences /esug /2012 RH RH RH Thursday, August 30, 12
  • 11. WARequestFilter RH Thursday, August 30, 12
  • 12. WASession 2.8 • current request • jump to • last continuation • continuations • monitor •… Thursday, August 30, 12
  • 13. WASession 3.x • continuations • properties • (document handlers) Thursday, August 30, 12
  • 14. WARequestContext • request • response • handler stack Thursday, August 30, 12
  • 15. Request Handler Stack 1 2 3 1 1 1 2 2 3 Thursday, August 30, 12
  • 16. WAPathConsumer /conferences/esug/2012/… RH RH RH /esug/2012/… /2012/… /… Thursday, August 30, 12
  • 17. WADispatcher ‘conferences’ -> aRequestHandler ‘sponsors’ -> aRequestHandler ‘…’ -> aRequestHanlder Thursday, August 30, 12
  • 18. WASeverAdapter provides template methods for converting provides start and stop hooks provides easy integration with ser ver manager UI you don’t have to use it sets up request context XXRequest WARequest SA RH XXRespone WARespone WARequestContext Thursday, August 30, 12
  • 19. Frank a micro framework inspired by Sinatra Thursday, August 30, 12
  • 21. Disclaimer • REST in this context simply means “pretty URLs” • pretty URLs for web services, not web applications • this will feel a little weird Thursday, August 30, 12
  • 22. index <get> ^ ‘Hello World’ Thursday, August 30, 12
  • 23. index <get> <path: ‘index.html’> ^ ‘Hello World’ Thursday, August 30, 12
  • 24. indexHtml <get> <path: ‘index’> <produces: ‘text/html’> ^ ‘<h1>Hello World</h1>’ Accept: text/html Thursday, August 30, 12
  • 25. indexXml <get> <path: ‘index’> <produces: ‘text/xml’> ^ ‘<hello><world/></hello>’ Accept: text/xml Thursday, August 30, 12
  • 26. uploadXml <post> <consumes: ‘text/xml’> … Content-Type: text/xml Thursday, August 30, 12
  • 27. uploadCsv <post> <consumes: ‘text/csv’> … Content-Type: text/csv Thursday, August 30, 12
  • 28. getAllStartingAt: start limit: limit named: name <get> <path: ‘/{name}/_all_docs?start={start}&limit={limit}’> ... Thursday, August 30, 12
  • 30. WARestfulComponentFilter count: count <get> <path: '/{count}'> self startSessionWithRoot: (WACounter new count: count greaseInteger; yourself) Thursday, August 30, 12
  • 31. Data Binding • XML or JSON canvas • Magritte-XML • Magritte-JSON Thursday, August 30, 12
  • 32. Dialects • GemStone • Pharo • VAST Thursday, August 30, 12
  • 34. Session Tracking Fully Customizable • query fields • cookie only • cookie if supported, query field otherwise • cookie for browser, IP for crawler • SSL session id (*) • path parameter (*) Thursday, August 30, 12
  • 35. Path Parameter • /;_s=KAAWl0x3c6KLnN6Q • doesn’t need to be hidden form parameter • required by some load balancers Thursday, August 30, 12
  • 36. WAMain gone • specify initial continuation • subclass WASessionContinuation if you used to subclass WAMain Thursday, August 30, 12
  • 37. WAPluggableActionContinuation • replace WAActionPhaseContinuation subclasses with WACallbackProcessingActionContinuation subclasses Thursday, August 30, 12
  • 38. JSON • separate from JavaScript • various subtle bugs fixed • canvas API Thursday, August 30, 12
  • 39. Streaming Redone • on demand flushing • continuation that flushes after rendering </head> • better portability to other servers Thursday, August 30, 12
  • 40. HTML 5 •#multipleValuesCallback: Thursday, August 30, 12
  • 41. Document Handlers • stored in session • no longer stored alongside sessions • _d Thursday, August 30, 12
  • 42. Other News • Nick now part of core team • experimental Pharo 2.0 support • walkback should open at correct place in VW • platforms can implement optimized HTML escaping Thursday, August 30, 12
  • 43. Help Wanted • Morphic Control panel for Pharo 2.0 Thursday, August 30, 12
  • 44. Seaside Sprint • Friday at Vooruit • Saturday at Camp location • (Sunday) Thursday, August 30, 12
  • 45. Seaside Sprint Sponsors • Reza Razavi • 2Rivers Thursday, August 30, 12
  • 46. Links • https://github.com/marschall/esug-2012-presentation • http://ss3.gemstone.com/ss/frank • http://code.google.com/p/seaside/wiki/Seaside310Changelog • http://book.seaside.st/book/advanced/restful • http://code.google.com/p/seaside/wiki/SeasideRest Thursday, August 30, 12