Unravel.Startup

Unravel.Startup

Unravel provides a fully configurable ASP.NET Core IWebHost on top of System.Web via OWIN, with forward-compatible dependency injection, configuration and logging.

• Unravel.Application
  • Inherits from System.Web.HttpApplication
  • Provides OWIN Startup
  • Provides ASP.NET Core Startup, including ConfigureServices(IServiceCollection)
  • Builds an ASP.NET Core IWebHost, including an IServiceProvider
    • Static Unravel.Application.Services service locator
    • Scoped per HttpContext
    • With GetRequestServices() extension methods
• OwinHost.CreateDefaultBuilder(), equivalent to WebHost.CreateDefaultBuilder().
  • Microsoft.Extensions.Configuration
    • ConfigurationManagerConfigurationProvider inspired by @benfoster
    • appsettings.json and appsettings.{env}.json
    • User Secrets (Development only)
    • Environment Variables
  • Microsoft.Extensions.DependencyInjection
  • Microsoft.Extensions.Logging
    • Configured from IConfiguration
    • Debug Logger

Setup

1. Install Unravel.Startup in your Web Application project

2. Search the project for an existing OWIN Startup Class:

   • There may be an OwinStartup attribute, e.g.

     [assembly: OwinStartup(typeof(UnravelExamples.Web.OwinStartup))]
     

   • Web.config may contain owin:appStartup, e.g.

     <appSettings>
       <add key="owin:appStartup" value="UnravelExamples.Web.OwinStartup" />
     </appSettings>
     

   In the instructions that follow, use that class name instead of Startup (or rename it to Startup).

3. Open Global.asax.cs:

   • Rename the class to Startup
   • Make the class partial
   • Inherit from Unravel.Application

   -public class MvcApplication : System.Web.HttpApplication
   +public partial class Startup : Unravel.Application
   

   Make sure the Inherits in Global.asax updated, too

   -<%@ Application CodeBehind="Global.asax.cs" Inherits="UnravelExamples.Web.MvcApplication" Language="C#" %>
   +<%@ Application CodeBehind="Global.asax.cs" Inherits="UnravelExamples.Web.Startup" Language="C#" %>
   

4. If you already have a Startup.cs:

   1. Make it partial
   2. Replace void Configuration(IAppBuilder app) with override void ConfigureOwin(IAppBuilder app)

   If you don't, create one.

   Then you can override ConfigureServices(), too.

   // Startup.cs
   public partial class Startup
   {
       public override void ConfigureServices(IServiceCollection services)
       {
       }
   
       public override void ConfigureOwin(IAppBuilder app)
       {
       }
   }