MID307. Article source: /2011/05/02/6569632-facebook- marriage-killer?gt1=43001 .
38
Make Yourself Comfortable and REST with Microsoft .NET Howard Dierking Program Manager, WCF Microsoft MID307
-
Upload
calvin-manning -
Category
Documents
-
view
217 -
download
2
Transcript of MID307. Article source: /2011/05/02/6569632-facebook- marriage-killer?gt1=43001 .
Make Yourself Comfortable and REST with Microsoft .NET
Howard DierkingProgram Manager, WCFMicrosoft
MID307
Agenda
Why REST?REST and WCF 4.0A Look Into the Future
REST is an architectural style grounded in the characteristics that make the Web successful
Broad Interoperability
Proliferation of Devices
Increased Scale Demands
“The Server”
Traditional Web Service
[ServiceContract(Namespace = "http://samples.microsoft.com/wcf/restcart")]public interface ICartService{ [OperationContract(Action = "GetCart")] CartDto GetCart();
[OperationContract(Action = "ClearCart")] void ClearCart();
[OperationContract(Action = "UpdateCartItem")] CartDto UpdateCartItem(int itemId, int qty);
[OperationContract(Action="RemoveCartItem")] CartDto RemoveCartItem(int itemId);
[OperationContract(Action = "AddCartItem")] CartDto AddCartItem(int itemId, int qty);}
Resources and Representations
Howard Dierking
Voice
HTMLEmail
Teleportation
A Simple Product CatalogProductResource
http://myhost/product/
GET
POST
GET (id)
PUT (id)
DELETE (id)
GET http://restcartwcf4/products
POST http://restcartwcf4/products
GET http://restcartwcf4/products/1
PUT http://restcartwcf4/products/1
DELETE http://restcartwcf4/products/1
Setting Up the Product Catalog
Demo
Content Negotiation
Content Negotiation
HTTP/1.1 200 OKCache-Control: privateContent-Length: 553Content-Type: application/json; charset=utf-8
{ "description":"Erik Evans magnum opus on DDD", "links":null,"name":"Domain Driven Design", "price":59.99,"productNumber":"200", "quantityOnHand":1}
ProductResourcehttp://myhost/product/
GET
POST
GET (id)
PUT (id)
DELETE (id)
GET http://myhost/product/1Accept: application/json
HTTP/1.1 200 OKContent-Type: application/json
Automatic Content Negotiation
Demo
Intermediaries and Caching
What did he just say?
Cache Control and Revalidation
GET http://myhost/product/1HTTP/1.1 304 Not Modified
GET http://myhost/product/1If-None-Match: “1”
HTTP/1.1 304 Not Modified
2
3
GET http://myhost/product/1
HTTP/1.1 200 OKCache-Control: max-age=60Etag:“1”...
1ProductResource
http://myhost/product/
GET
POST
GET (id)
PUT (id)
DELETE (id)
GET (id)
Optimistic ConcurrencyPUT http://myhost/product/1If-Match: “1”
HTTP/1.1 200 OKEtag: “2”...
PUT http://myhost/product/1If-Match: “1”
HTTP/1.1 412 Precondition Failed
GET http://myhost/product/1
HTTP/1.1 200 OKEtag: “2”
PUT http://myhost/product/1If-Match: “2”HTTP/1.1 200 OKEtag: “8”...
1
2
3
4
ProductResourcehttp://myhost/product/
GET
POST
GET (id)
PUT (id)
DELETE (id)
GET (id)
PUT (id)
Control Caching and Validation
Demo
Hypermedia
Hypermedia
GET http://myhost/product/Accept: application/atom+xml
GET http://myhost/product/1
HTTP/1.1 200 OK
HTTP/1.1 200 OK
<feed xmlns="http://www.w3.org/2005/Atom"> <title type="text">All Products</title> <subtitle type="text">All my products</subtitle> <id>ProductsFeed</id> <updated>2011-05-10T22:30:30-07:00</updated> <entry> <id>2</id> <title type="text">Domain Driven Design</title> <updated>2011-05-10T22:30:30-07:00</updated> <link rel="self" href="http://myhost/product/1"/> ... </entry></feed>
<link rel="self" href="http://myhost/product/1"/>
1
2
ProductResourcehttp://myhost/product/
GET
POST
GET (id)
PUT (id)
DELETE (id)
GET
GET (id)
Reduce Coupling with Hypermedia
Demo
Future: WCF Web API Improvements
Symmetric HTTP object model on the client and serverSimplified extensibility pipelineIoC and code-based configAsync (task of T on the client)…and more to come…
Extended Content Negotiation with Web API
Demo
Let’s Recap
REST BenefitsBroad interoperabilityDevice integrationNaturally suited for horizontal scale
Implementing REST with WCFResources and representations (WCF 4.0)Content negotiation (WCF 4.0, expanded in Web API)Leverage intermediaries (WCF 4.0)Hypermedia (WCF 4.0, expanded in Web API)
Learn more about WCF and REST
http://wcf.codeplex.com Roy Fielding’s thesisIANA registry of media typesIANA registry of link relationshipsREST in PracticeMSDN WCF Developer Center
http://msdn.microsoft.com/en-US/netframework/aa663324.aspx
MeBlog: http://codebetter.com/howarddierkingEmail: [email protected]: howard_dierking
Related ContentBreakout Sessions
MID302 AppFabric Caching: How It Works and When You Should Use ItMID314 Services Made Easy with WCF 4, Microsoft Visual Studio 2010 and Windows Server AppFabricMID311 Windows Communication Foundation RIA: Ready for Business MID310 Windows Communication Foundation Futures MID315 Building Highly Scalable and Available WCF Services with Windows Azure AppFabric
Hands-on LabsMID374-HOL | Windows Communication Foundation (WCF) 4: Configuration is Much More Simple - Learn How MID378-HOL | Windows Server AppFabric Hosting: Developer Basics - Workflow Services MID377-HOL | Windows Server AppFabric Hosting: Developer Basics - Windows Communication Foundation (WCF) Services
Track Resources
Windows Azure Platform Training Kit
Windows Server AppFabric Training Kit
BizTalk 2010 Developer Training Kit
Windows Azure AppFabric on MSDN
Windows Server AppFabric on MSDN
AppFabric Team Blog
Resources
www.microsoft.com/teched
Sessions On-Demand & Community Microsoft Certification & Training Resources
Resources for IT Professionals Resources for Developers
www.microsoft.com/learning
http://microsoft.com/technet http://microsoft.com/msdn
Learning
http://northamerica.msteched.com
Connect. Share. Discuss.
Complete an evaluation on CommNet and enter to win!
Scan the Tag to evaluate this session now on myTech•Ed Mobile
© 2011 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to
be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS
PRESENTATION.
WCF and HTTP: A Brief History
.NET Framework
3.0
• No support for REST – SOAP only
.NET Framework
3.5
• Basic infrastructure for non-SOAP HTTP services
REST Starter Kit Preview 1
• Visual Studio templates for RESTful services
• Request interceptors
REST Starter Kit Preview 2
• HTTP client library
.NET Framework
4.0
• ASPNET routes integration
• Automatic content negotiation
The RESTful Path
Level 3: Hypermedia
Level 2: HTTP
Level 1: URIs
Level 0: Web Services
Richardson’s HTTP maturity model
Traditional Web ServiceCartService.svc
GetCart()
ClearCart()
UpdateCartItem(itemId, Qty)
RemoveCartItem(itemId)
AddCartItem(itemId, Qty)
ApplyShippingInfo(shippingOption, shippingAddress)
ApplyBillingInfo(billingAddress, paymentType, paymentInfo)
…
POST http://localhost/CartService.svc HTTP/1.1Content-Type: text/xml; charset=utf-8SOAPAction: "GetCart"Content-Length: 154
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Body> <GetCart xmlns="http://samples.microsoft.com/wcf/restcart"/> </s:Body></s:Envelope>
HTTP/1.1 200 OKContent-Length: 984Content-Type: text/xml; charset=utf-8Date: Tue, 26 Apr 2011 01:22:53 GMT
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Body> <GetCartResponse xmlns="http://samples.microsoft.com/wcf/restcart"> <GetCartResult xmlns:i="http://www.w3.org/2001/XMLSchema-instance"> <DateCreated>2011-04-25T18:22:53.5759314-07:00</DateCreated> <Items> <CartItemDto> <Description>Product 1</Description> <ProductNumber>1</ProductNumber> <Quantity>2</Quantity> <Subtotal>5</Subtotal> <UnitPrice>2.5</UnitPrice> </CartItemDto> </Items> <LastUpdated>2011-04-25T18:22:53.5759314-07:00</LastUpdated> ... </s:Body></s:Envelope>
POST http://localhost/CartService.svc
SOAPAction: "GetCart"
200 OK
Content-Type: text/xml
<LastUpdated>2011-04-25T18:22:53.5759314-07:00</LastUpdated>
Traditional Web ServiceCartService.svc
GetCart()
ClearCart()
UpdateCartItem(itemId, Qty)
RemoveCartItem(itemId)
AddCartItem(itemId, Qty)
ApplyShippingInfo(shippingOption, shippingAddress)
ApplyBillingInfo(billingAddress, paymentType, paymentInfo)
…
POST http://localhost/CartService.svc HTTP/1.1Content-Type: text/xml; charset=utf-8SOAPAction: "GetCart"Content-Length: 154
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Body> <GetCart xmlns="http://samples.microsoft.com/wcf/restcart"/> </s:Body></s:Envelope>
HTTP/1.1 500 Internal Server ErrorContent-Length: 734Content-Type: text/xml; charset=utf-8Date: Wed, 27 Apr 2011 00:15:00 GMT
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Body> <s:Fault> <faultcode>a:InternalServiceFault</faultcode> <faultstring xml:lang="en-US">...</faultstring> </s:Fault> </s:Body></s:Envelope>
500 Internal Server Error
<faultcode>a:InternalServiceFault</faultcode><faultstring xml:lang="en-US">...</faultstring>
Simplify Etag Validation with Web API MessageHandlers
Demo
© 2011 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to
be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS
PRESENTATION.
