OWIN AND WEB API 2.2

Oslo/NNUG

Tomas Jansson

26/08/2014

THIS IS ME

Tomas Jansson

Manager & Practice Lead .NETBEKK Oslo

@TomasJanssontomas.jansson@bekk.nogithub.com/mastojblog.tomasjansson.com

AGENDA

What is OWIN

Show me MORE CODE!

TerminologyShow me the

code!

RESTWeb API 2.2

WHAT IS OWIN?

OWIN defines a standard interface between .NET web servers and web applications.

The goal of the OWIN interface is to decouple server and application, encourage the development of simple modules for .NET web development, and, by being an open standard, stimulate the open source ecosystem of .NET web development tools.

http://owin.org/

WHAT IS OWIN?

OWIN defines a standard interface between .NET web servers and web applications.

The goal of the OWIN interface is to decouple server and application, encourage the development of simple modules for .NET web development, and, by being an open standard, stimulate the open source ecosystem of .NET web development tools.

http://owin.org/WhatOWIN is

WHAT IS OWIN?

OWIN defines a standard interface between .NET web servers and web applications.

The goal of the OWIN interface is to decouple server and application, encourage the development of simple modules for .NET web development, and, by being an open standard, stimulate the open source ecosystem of .NET web development tools.

http://owin.org/

The goal

TERMINOLOGY

Actors Environment AppFunc

ACTORS

Host: The process an application and server execute inside of, primarily responsible for application startup.

Example: Self-host, Nowin, IIS

http://owin.org/spec/owin-1.0.0.html

ACTORS

http://owin.org/spec/owin-1.0.0.html

Server: The HTTP server that directly communicates with the client and then uses OWIN semantics to process requests.

Examples: SystemWeb, Self-Host, Nowin

Host: The process an application and server execute inside of, primarily responsible for application startup.

Example: Self-host, Nowin, IIS

ACTORS

Middleware: A pass through component that handles cross cutting concerns. Acts as a pipeline between server and application.

Example: Security stuff

http://owin.org/spec/owin-1.0.0.html

Server: The HTTP server that directly communicates with the client and then uses OWIN semantics to process requests.

Examples: SystemWeb, Self-Host, Nowin

Host: The process an application and server execute inside of, primarily responsible for application startup.

Example: Self-host, Nowin, IIS

ACTORS

Middleware: A pass through component that handles cross cutting concerns. Acts as a pipeline between server and application.

Example: Security stuff

Web Framework: Self-contained components that you can base your applicationon.

Example: Web API, NancyFx, SignalR

http://owin.org/spec/owin-1.0.0.html

Server: The HTTP server that directly communicates with the client and then uses OWIN semantics to process requests.

Examples: SystemWeb, Self-Host, Nowin

Host: The process an application and server execute inside of, primarily responsible for application startup.

Example: Self-host, Nowin, IIS

ACTORS

Middleware: A pass through component that handles cross cutting concerns. Acts as a pipeline between server and application.

Example: Security stuff

Web Framework: Self-contained components that you can base your applicationon.

Example: Web API, NancyFx, SignalR

Web Application: This is the stuff you’re most likely to write.

http://owin.org/spec/owin-1.0.0.html

Server: The HTTP server that directly communicates with the client and then uses OWIN semantics to process requests.

Examples: SystemWeb, Self-Host, Nowin

Host: The process an application and server execute inside of, primarily responsible for application startup.

Example: Self-host, Nowin, IIS

ENVIRONMENT

http://mashable.com/2013/06/13/dictionary-new-words-2013/

ENVIRONMENT

The Environment dictionary stores information about the request, the response, and any relevant server state.

The server is responsible for providing body streams and header collections for both the request and response in the initial call.

The application then populates the appropriate fields with response data, writes the response body, and returns when done.

APPFUNC – THE APPLICATION DELEGATE

http://casopisinterfon.org/2014/03/11/da-li-funk-od-balkana-pravi-pesme-ili-balkan-od-funka-pravi-slona/

APPFUNC – THE APPLICATION DELEGATE

using AppFunc = Func<IDictionary<string, object>, // Environment

Task>; // Done

WEB API 2.2

Full OWIN support

Attribute routing

Global error handling

Multiple OData improvements

REST/RICHARDSON’S MATURITY MODEL

http://martinfowler.com/articles/images/richardsonMaturityModel/overview.png

REST/RICHARDSON’S MATURITY MODEL

This is our goal today!

http://martinfowler.com/articles/images/richardsonMaturityModel/overview.png

https://github.com/mastoj/OwinLinkyApi

Summary

Time to pick up OWIN

Key components

of OWIN: Environment and AppFunc

REST level 3 is doable!

RESOURCES

OWIN: http://owin.org/

Katana: https://katanaproject.codeplex.com/

Presentation: http://www.slideshare.net/mastoj/owin-web-api-with-linky

Source code: https://github.com/mastoj/OwinLinkyApi

Linky: https://github.com/zudio/Linky

Questions?

Thank you!

@TomasJansson