IServerStartup implementation

Oqtane.Client/Modules/ModuleBase.cs

@@ -9,7 +9,7 @@ using Oqtane.UI;
 
 namespace Oqtane.Modules
 {
-    public class ModuleBase : ComponentBase, IModuleControl
+    public abstract class ModuleBase : ComponentBase, IModuleControl
     {
         private Logger _logger;
 

Oqtane.Server/Extensions/ApplicationBuilderExtensions.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Linq;
+using System.Reflection;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Oqtane.Infrastructure;
+
+namespace Oqtane.Extensions
+{
+    public static class ApplicationBuilderExtensions
+    {
+        public static IApplicationBuilder ConfigureOqtaneAssemblies(this IApplicationBuilder app, IWebHostEnvironment env)
+        {
+            var startUps = AppDomain.CurrentDomain
+                .GetOqtaneAssemblies()
+                .SelectMany(x => x.GetInstances<IServerStartup>());
+
+            foreach (var startup in startUps)
+            {
+                startup.Configure(app, env);
+            }
+            
+            return app;
+        }
+    }
+}

Oqtane.Server/Extensions/AssemblyExtensions.cs

@@ -31,7 +31,24 @@ namespace System.Reflection
             }
 
             return assembly.GetTypes()
-                .Where(t => t.GetInterfaces().Contains(interfaceType));
+                //.Where(t => t.GetInterfaces().Contains(interfaceType));
+                .Where(x => interfaceType.IsAssignableFrom(x) && !x.IsInterface && !x.IsAbstract);
+        }
+        
+        public static IEnumerable<T> GetInstances<T>(this Assembly assembly) where T : class
+        {
+            if (assembly is null)
+            {
+                throw new ArgumentNullException(nameof(assembly));
+            }
+            var type = typeof(T);
+            var list = assembly.GetTypes()
+                .Where(x => type.IsAssignableFrom(x) && !x.IsInterface && !x.IsAbstract && !x.IsGenericType);
+
+            foreach (var type1 in list)
+            {
+                if (Activator.CreateInstance(type1) is T instance) yield return instance;
+            }
         }
 
         public static bool IsOqtaneAssembly(this Assembly assembly)

Oqtane.Server/Extensions/OqtaneMvcBuilderExtensions.cs

@@ -3,6 +3,7 @@ using System.Linq;
 using System.Reflection;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.ApplicationParts;
+using Oqtane.Infrastructure;
 
 // ReSharper disable once CheckNamespace
 namespace Microsoft.Extensions.DependencyInjection
@@ -30,6 +31,22 @@ namespace Microsoft.Extensions.DependencyInjection
                     }
                 }
             }
+
+            return mvcBuilder;
+        }
+
+
+        public static IMvcBuilder ConfigureOqtaneMvc(this IMvcBuilder mvcBuilder)
+        {
+            var startUps = AppDomain.CurrentDomain
+                .GetOqtaneAssemblies()
+                .SelectMany(x => x.GetInstances<IServerStartup>());
+
+            foreach (var startup in startUps)
+            {
+                startup.ConfigureMvc(mvcBuilder);
+            }
+
             return mvcBuilder;
         }
     }

Oqtane.Server/Extensions/OqtaneServiceCollectionExtensions.cs

@@ -53,11 +53,17 @@ namespace Microsoft.Extensions.DependencyInjection
                         services.AddSingleton(hostedServiceType, serviceType);
                     }
                 }
-            }
                 
+                var startUps = assembly.GetInstances<IServerStartup>();
+                foreach (var startup in startUps)
+                {
+                    startup.ConfigureServices(services);
+                }
+            }
             return services;
         }
 
+        
         private static void LoadAssemblies()
         {
             var assemblyPath = Path.GetDirectoryName(Assembly.GetEntryAssembly()?.Location);

Oqtane.Server/Infrastructure/Interfaces/IServerStartup.cs

@@ -0,0 +1,17 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Oqtane.Infrastructure
+{
+    public interface IServerStartup
+    {
+        // This method gets called by the runtime. Use this method to add services to the container.
+        // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
+        void ConfigureServices(IServiceCollection services);
+        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+        void Configure(IApplicationBuilder app, IWebHostEnvironment env);
+        void ConfigureMvc(IMvcBuilder mvcBuilder);
+    }
+}
+

Oqtane.Server/Startup.cs

@@ -14,6 +14,7 @@ using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.OpenApi.Models;
+using Oqtane.Extensions;
 using Oqtane.Infrastructure;
 using Oqtane.Repository;
 using Oqtane.Security;
@@ -187,14 +188,13 @@ namespace Oqtane
             services.AddTransient<ISqlRepository, SqlRepository>();
             services.AddTransient<IUpgradeManager, UpgradeManager>();
 
-            // load the external assemblies into the app domain
+            // load the external assemblies into the app domain, install services 
             services.AddOqtaneParts();
 
             services.AddMvc()
+                .AddNewtonsoftJson()
                 .AddOqtaneApplicationParts() // register any Controllers from custom modules
-                .AddNewtonsoftJson();
+                .ConfigureOqtaneMvc();       // any additional configuration from IStart classes.
-
-
 
             services.AddSwaggerGen(c =>
             {
@@ -217,14 +217,12 @@ namespace Oqtane
                 // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                 app.UseHsts();
             }
-
             app.UseHttpsRedirection();
             app.UseStaticFiles();
             app.UseBlazorFrameworkFiles();
             app.UseRouting();
             app.UseAuthentication();
             app.UseAuthorization();
-
             app.UseSwagger();
             app.UseSwaggerUI(c =>
             {
@@ -237,6 +235,7 @@ namespace Oqtane
                 endpoints.MapControllers();
                 endpoints.MapFallbackToPage("/_Host");
             });
+            app.ConfigureOqtaneAssemblies(env);
         }
     }
 }