ASP.NET vNext the future of ASP

Where we go?
ASP : Summary
New structure + Demo
OWIN
Grunt
Bower
Dependancy Injection + Demo
Kruntime + Demo
OmniSharp & YO

ASP : Summary (1/2)
ASP.NET = 2002 :
◦ Webform, (ViewState)
◦ System.Web (releases sync with releases of the framework)
◦ HttpContext (designed for webform)
More than 30Ko of server’s memory each request (HttpContext)
◦ Even for REST API’s !

ASP : Summary (2/2)
ASP .NET MVC = 2007
◦ MVC, WebAPI, SignalR, Razor are all Nuget packages
WebAPI = 2012
ASP.NET vNext = 2015
◦ OWIN (Open Web Interface for .NET - Katana)
◦ CIAO system.Web!
◦ Modular framework in packages
◦ Cloud optimized (200 -> 10MB for the framework)
◦ Official support of Mono (mono in integration build)
◦ Grunt and Bower integration
◦ Kruntime: deal framework packages thanks to KVM & KPM
◦ Dependancy injection built-in
◦ EF7 (Wphone , Mono Azure & SQLite(?) compliant)
◦ Identity 3
◦ …

New structure! (1/2)
Solution items
◦ Global.json : information about solution
Src : contains projects, source files (not unit test)
Wwwroot : static files (scripts, css, pictures, font,…)
Config.json: new config file
Project.json : contains all packages used and dependancies (ex: asp.net MVC), file for NuGet
Startup.js (entry point for OWIN (before: global.asax)) :
◦ Startup : Setup configuration
◦ ConfigureServices : called by the runtime: loads EF, Identity, MVC, Singleton for DI
◦ Configure : called after after ConfigureServices : loads and configure
◦ HTTP request pipeline, identity, error handling, routing, …

New structure (2/2)
Global information on the project
◦ WebRoot: web server root (public folder)
◦ Metadata as version, authors, description
◦ Things to exclude for compilation
Dependencies section lists :
◦ all the dependencies of your application
Target frameworks that will be built, and dependencies
that are specific to the configuration.

Demo
Launch of starter
The new compiler Roslyn is there! (control+F5 in order to use the AOT compilation : build is done
when you save, VS just do semantic check)

OWIN
Open Web Interface for .NET runs MVC applications on a very thin Katana server, or on a Project
Helios managed IIS instance.
Interaction between webhost and web app that allow to be ran on different platforms (Linux, OSX,
Windows) thanks to their 4 layers:

Grunt
Grunt = JS Task-Runner
◦ Automate everything !
◦ CSS concat
◦ JS minifier
◦ Picture optimization
◦ …
◦ Package.json ->
◦ GruntFile.js

Bower
Client-side package manager (dependency mgmt tool)
Configuration in bower.json

Dependancy Injection (1/5)
Dependency Injection" is a 25-dollar term for a 5-cent concept. [...]
Dependency injection is basically providing the objects that an object needs (its dependencies)
instead of having it construct them itself. It's a very useful technique for testing, since it allows
dependencies to be mocked or stubbed out.
Dependency injection == giving an object its instance variables.

Example application that shows TODO items
The demo front-end just show the items but there are some backend methods as example.

TodoRepository that implements ITodoRepository

Controller

ConfigureServices is the global place where dependencies are registered that can be used
through the whole application stack.
AddSingleton method register the Interface and the specific implementation of the global
DI container.

Demo !
Let’s launch that beautiful app ( sorry, no more pictures  )

K* (1/2)
KRE = K Runtime Engine : code to bootstrap apd run ASP.NET vNext (Compilation system, SDK, tools,
CLR hosts, …). KRE = packages !
KVM : K Version Manager : to manage install different version of KRE present on the machine. Used
to set default KRE version (powershell script)
KLR = K Language Runtime: used to launch one self hosted app. When used, KLR find and launch CLR
native host of the app
KPM : K Package Manager : to manage NuGet packages and dependancies needed to run the app

K* (2/2)
Kvm help !!!
kvm list : list all versions of the framework and the one that is selected (the one with a *). When
there is a « C », it’s cloud optimized!
Kvm alias default 1.0.xxx (and restart VS) : put alias default to 1.0.xxx
Kvm use 1.0.xxx : set active version for machine
Kvm use default : set active version for machine but by specifying that one that is default
k run: execute the application on CLI & K web: for webapplication
K web --server.urls=http://localhost:5001 in order to specify url if not specified in config file

Demo
Test project with commands!
◦ Console
◦ Web
◦ Web with different version of runtime

OmniSharp
Tool To enable great .NET development in lots of editors:
◦ Atom
◦ Sublime text 3
◦ Brackets
◦ VIM
◦ Emacs
◦ CLI

YO !
Yeoman : tool to generate code : a scaffolding too for aspnet from the CLI:

Sources
http://en.wikipedia.org/wiki/ASP.NET_MVC_Framework
http://developer.telerik.com/featured/microsofts-special-k-an-introduction-to-asp-net-vnext/
http://gruntjs.com/
http://gunnarpeipman.com/2014/10/asp-net-5-new-structure-of-solutions-and-projects/
http://www.omnisharp.net/
https://robinsedlaczek.wordpress.com/2014/11/22/dependency-injection-in-asp-net-vnext/
http://fiscammc.com/wordpress/category/owin/
www.owin.com
www.yeoman.io
www.omnisharp.com

ASP.NET vNext the future of ASP

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