ASP.NET Core 2.0.0-preview2 high-level planning

[DamianEdwards]

Roughly in impact/priority order. This is high-level only and doesn't include all issues, bugs, etc. from every repo, just intended to give a general idea of milestone scope and direction.

• Support .NET Framework
  • Min supported version 4.6.1 (to align with netstandard2.0)
  • Retarget all Microsoft.AspNetCore.* packages to netstandard2.0
    • Excludes the Microsoft.AspNetCore.All meta-package. This package will remain netcoreapp2.0 only as it is intended to be used along with the .NET Core 2.0 runtime store
  • Cross-compile packages to netcoreapp2.0 where necessary for API, e.g. cert generation in Identity Services diagnostics middleware
  • Fix issues of running on .NET Framework by way of:
    • Updating code to use new APIs in netstandard2.0
    • Disabling the feature when running on .NET Framework if APIs are only available in netcoreapp2.0
    • Cross-compiling to net461 when APIs are only available in net461 and netcoreapp2.0
  • Ensure all project tools work on .NET Framework
    • Tools that have to load the application are of particular importance, e.g. Razor view compilation (Make the tool here work with apps that target .NET Framework 4.6.1 MvcPrecompilation#128), Scaffolding (already works), EF (already works)
  • Add .NET Framework project templates (Add project templates for ASP.NET Core 2.0 apps running on .NET Framework dotnet/templating#813)
    • These will specify their package dependencies much like the 1.1.x templates, using the smaller Microsoft.AspNetCore meta-package and other packages explicitly as necessary
• Revisit logging changes (Logger refactoring Logging#623)
  • Consider ILoggerFactory wrapping as supported approach to "replacing" ILoggerFactory
  • Re-do the configuration-driven logger filtering design to address issues
• Agree on design for convention-based configuration in our sub-systems (Add Microsoft.AspNet.Configuration targeting default configuration schema MetaPackages#117) (cut)
  • We should always have IOptions<T> delegates as the first layer
  • Have IServiceCollection extension methods of agreed overloads for various scenarios, e.g. default configuration schema, specifying different section, etc.
  • Default schema for Kestrel endpoints (Update kestrel config binding KestrelHttpServer#1875)
  • Default schema for identity service settings (Switch Identity service config to ConfigureDefaultOptions/format Identity#1255)
  • Default schema for authentication settings (Bind shared Default schemes to config Security#1245)
• Harden hosting startup (Harden hosting startup Hosting#1074)
  • Aggressively force loading of dependencies in our own implementations of IHostingStartup to avoid delayed load exceptions
  • Ensure VS doesn't attempt to enable hosting startup for AppInsights if application already depends on it explicitly
• Add Identity options to Razor Pages project template (Add authentication to Razor Pages project template dotnet/templating#669) (cut)
• Investigate ideas for improving throughput when running on the runtime store due to use of CrossGen (https://github.com/aspnet/Performance/issues/232) (cut)
• Packagize HealthChecks (Have builds of this repo go to a nightly feed dotnet-architecture/HealthChecks#7) (cut)
• SPA Services
  • Update for 2.0.0 (Include JavaScript Services in ASP.NET Core 2.0 build JavaScriptServices#948)
  • Get SPA Services templates in to dotnet new and VS by default (Can't use 'script' post action to run 'npm install' dotnet/templating#849)
• Kestrel
  • Edge-server readiness features, e.g. timeouts, limits
• Dynamically register ITagHelperComponents per request ([Feature] Inject TagHelperComponents at runtime Mvc#6282)
• Finish Security redesign (Auth 2.0 Part II: Revenge of AuthZ Security#1190)
• Finalize design-time service provider (Interface to formalize how tooling obtains the application's service provider DependencyInjection#524) (cut)
  • Agree on and implement final design for tools that wish to discover application services (including configuration) at design/build-time (cut)
• Identity as a service updates (cut)
  • XPlat tooling for setting up development HTTPS certificate (Add tool for creating HTTPS development certificate DotNetTools#296)
  • Template cleanup work: get rid of Extensions code, chain off of identity builder, simplify certificate configuration (Add a helper extension for setting up authentication with Azure AD Security#1214, Add a helper extension for setting up authentication with Azure AD B2C Security#1215)
  • Proof of key for code exchange (Proof of key for code exchange Identity#1205)
  • Key Vault certificate source (Support signing certificates from key vault Identity#1211)
  • Integrated Web API client (Integrated Web API client Identity#1206) (cut)
  • UI for app management (App management UI Identity#1207) (cut)

Discussion for this issue is at dotnet/aspnetcore#2032