AspNetCoreFmSample.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using AzureFromTheTrenches.Commanding;
using AzureFromTheTrenches.Commanding.Abstractions;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using RestAspNetCoreExample.Commands;
using RestAspNetCoreExample.Model;

namespace RestAspNetCoreExample
{
    public class Startup
    {
        private IServiceProvider _serviceProvider;
        
        // 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
        public void ConfigureServices(IServiceCollection services)
        {
            CommandingDependencyResolverAdapter adapter = new CommandingDependencyResolverAdapter(
                (fromType, toInstance) => services.AddSingleton(fromType, toInstance),
                (fromType, toType) => services.AddTransient(fromType, toType),
                resolveType => _serviceProvider.GetService(resolveType)
            );

            ICommandRegistry registry = adapter.AddCommanding();
            registry.Discover<Startup>();

            services.AddControllers();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            _serviceProvider = app.ApplicationServices;
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseRouting();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }
    }
    
    [ApiController]
    [Route("todo")]
    public class CreateTodoItemController : ControllerBase
    {
        private readonly ICommandDispatcher _dispatcher;

        public CreateTodoItemController(ICommandDispatcher dispatcher)
        {
            _dispatcher = dispatcher;
        }
            
        [HttpPost]
        public async Task<ActionResult<TodoItem>> Handler(CreateTodoItemCommand command)
        {
            TodoItem result = await _dispatcher.DispatchAsync(command);
            return result;
        }
    }
}