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REST- baserade tjänster med WCF ASP.NET Web API

REST- baserade tjänster med WCF ASP.NET Web API. Robert Folkesson. Active Solution. Who AM I?. REST?. Dissertation by Roy Fielding 2000 “Architectural Styles and the Design of Network-based Software Architectures” ReST = Representational State Transfer. Architectural constraints.

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REST- baserade tjänster med WCF ASP.NET Web API

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  1. REST-baseradetjänster med WCF ASP.NET Web API Robert Folkesson Active Solution

  2. Who AM I?

  3. REST? • Dissertation by Roy Fielding 2000 • “Architectural Styles and the Design of Network-based Software Architectures” • ReST = Representational State Transfer

  4. Architecturalconstraints • Client–server • Stateless • Cacheable • Layered system • Uniform Interface

  5. Scalability GET http://fabrikam.com/API/User/42

  6. Guiding principles of REST-interfaces • Identificationofresources • Manipulation of resources through representations of these resources • Self-descriptivemessages • Hypermedia as the engine of application state

  7. HATEOASHypermedia as the engineofapplicationstate

  8. Exampleof hypermedia representation (Netflix)

  9. Richardsons maturitymodel Gloryof REST Level 3: Hypermedia Controls Level 2: HTPP Verbs Level 1: Resources Level 0: The swampof POX

  10. REST on Microsoft – somehistory • WCF pre-3.5: painful… • WCF 3.5: WebHttpBinding. • WCF REST Starter Kit (no longer supported) • WCF Data Services (OData) • WCF Web API - Preview 1 - 6

  11. WCF ASP.NET Web API

  12. http://www.asp.net/web-api • Goal: One HTTP/ REST / Hypermedia API Fx • Integrated in ASP.NET: Best ofbothworld

  13. WCF to ASP.NET Web API WCF Web APIASP.NET Web API Service => Web API controller Operation => Action Service contract => n/a Endpoint => n/a URI templates => ASP.NET Routing Messagehandlers => Same Formatters => Same Operation handlers => Filters, modelbinders

  14. DEMO – File new

  15. Media types & Media Formatters

  16. Media types & Media Formatters • Built in support for: • XML • JSON • form-urlencodeddata • Can be extendedwithcustomMedia Formatters

  17. DEMO – Media Typeformatter

  18. Web API on NuGet • Web API hosted in ASP.NET: • AspNetWebApi • Self-hostedWeb API: • AspNetWebApi.Selfhost • HttpClientincluding XML and JSON formatters: • System.Net.Http.Formatting • JsonValuefor navigating and manipulating JSON: • System.JsonNewtonsoft.Json

  19. Node-style Web API? http://blogs.msdn.com/b/youssefm/archive/2012/02/24/writing-a-lightweight-web-service-using-webapi-building-blocks.aspx

  20. DEMO – SELF HOSTING

  21. Web API can be used for all levels Gloryof REST Level 3: Hypermedia Controls Level 2: HTPP Verbs ASP.NET Web API Level 1: Resources Level 0: The swampof POX

  22. OAuth/Claimsbasedsecurity http://zamd.net/

  23. Open Source: http://aspnetwebapi.codeplex.com

  24. Somegoodreading

  25. Thank you! Robert Folkesson | Active Solution robert.folkesson@activesolution.se | @rfolkes www.robertfolkesson.se

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