Serving DocFX static site from .NET and adding Authentication
Restricting access to static site generated using DocFX
For those of you who are new to DocFX
, DocFX is static site generator from source code files and markdown. it is mainly used for documentation, however it is important to mention that it is flexible to be used for many different purposes. some use it for blogging, profile site,... really its up to you to define what to use it for. for more information on DocFX
you can visit their official website.
Why serve it from .NET?
There are different advantages to serving the static site generated by DocFX
from .NET
since it provides the ability to add different functionalities on top of the static site. one of the practical advantages is to add authentication to access the static site. the reason to adding the authentication could be if you have internal documentation with in your company and you want it to be accessible only by authorized person. this scenario is only to demonstrate practical use case, & the use case can be different depending on your scenario. with that being said, lets get started...
Pre-request
- IdentityServer4: For authentication
- DocFX: For generating static site
- Add
DocFX
to environment variable for smooth build process
I used IdentityServer4
for authentication in this article, however this implementation works fine with other methods of authentications as well.
Setting up IdentityServer4
Create IdentityServer4 project
dotnet new is4inmem -n Identity
The templates for IdentityServer4
projects can be found on IdentityServer's Github repo.once the Identity project is created there is no need to make any change.
Setting up Static site server
Create ASP.NET Api project
dotnet new webapi -n StaticSiteServer
Add reference to Microsoft.AspNetCore.Authentication.OpenIdConnect
Nuget package.
In setting up the authentication there are couple of changes to be made here and there. not to go off topic I will not covering that in this article. however the source code can be found in my Github repository.
Setting up static site
In the same directory as StaticSiteServer
create static site project
docfx init -q -o Docs
Setting up the build process
Update StaticSiteServer.csproj
to define the root directory of the DocFX
file system
<PropertyGroup>
.
.
.
<DocFXRoot>Docs\</DocFXRoot>
</PropertyGroup>
Update the StaticSiteServer.csproj
to generate static site on both during build & publish.
<ItemGroup>
<Content Remove="$(DocFXRoot)**" />
<None Remove="$(DocFXRoot)**" />
<None Include="$(DocFXRoot)**" Exclude="$(DocFXRoot)_site\**" />
</ItemGroup>
<Target Name="DebugEnsureDocFXEnv" BeforeTargets="Build" Condition=" '$(Configuration)' == 'Debug' And !Exists('$(DocFXRoot)node_modules') ">
<Exec Command="docfx --version" ContinueOnError="true">
<Output TaskParameter="ExitCode" PropertyName="ErrorCode" />
</Exec>
<Error Condition="'$(ErrorCode)' != '0'" Text="DocFX is required to build and run this project. To continue, please install DocFX from https://github.com/dotnet/docfx/releases, and then restart your command prompt or IDE." />
<Message Importance="high" Text="Generate static sites from Markdown and code files. This may take several minutes..." />
<Exec WorkingDirectory="$(DocFXRoot)" Command="docfx build" />
</Target>
<Target Name="PublishRunWebpack" AfterTargets="ComputeFilesToPublish">
<Exec WorkingDirectory="$(DocFXRoot)" Command="docfx build" />
<ItemGroup>
<DistFiles Include="$(DocFXRoot)_site\**" />
<ResolvedFileToPublish Include="@(DistFiles->'%(FullPath)')" Exclude="@(ResolvedFileToPublish)">
<RelativePath>%(DistFiles.Identity)</RelativePath>
<CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
<ExcludeFromSingleFile>true</ExcludeFromSingleFile>
</ResolvedFileToPublish>
</ItemGroup>
</Target>
Now with these changes the static site will be generated build time. but the static site is still not being server from the StaticSiteServer
web API. for that lets update the Startup.cs
...
In ConfigureServices
method add authorization
public void ConfigureServices(IServiceCollection services)
{
.
.
.
services.AddAuthorization(options =>
{
options.FallbackPolicy = new
AuthorizationPolicyBuilder()
.RequireAuthenticatedUser()
.Build();
});
.
.
.
}
Again in the Startup.cs
file update the Configure
method to serve static files.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
.
.
.
app.UseFileServer(new FileServerOptions
{
FileProvider = new
PhysicalFileProvider(
Path.Combine(env.ContentRootPath,
"Docs", "_site")),
});
.
.
.
}
NOTE
app.UseFileServer*
must be added afterapp.UseAuthentication()
andapp.UseAuthorization()
.
That's it. now when trying to access the StaticSiteServer
it will redirects user for authentication, once the user is authenticated he will be presented with the static site as shown below.
1. StaticSiteServer
2. Authentication page
3. Documentation static site
4. Documentation static site
Complete source code can be found on Github
Thanks for reading, cheers!