DotNetCore.Mediator 18.7.0

.NET 8.0
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dotnet add package DotNetCore.Mediator --version 18.7.0
NuGet\Install-Package DotNetCore.Mediator -Version 18.7.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="DotNetCore.Mediator" Version="18.7.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add DotNetCore.Mediator --version 18.7.0
#r "nuget: DotNetCore.Mediator, 18.7.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install DotNetCore.Mediator as a Cake Addin
#addin nuget:?package=DotNetCore.Mediator&version=18.7.0

// Install DotNetCore.Mediator as a Cake Tool
#tool nuget:?package=DotNetCore.Mediator&version=18.7.0

DotNetCore.Mediator

The smallest, simplest and fastest implementation of the mediator pattern.

Tests

[TestClass]
public class MediatorTests
{
   private readonly IMediator _mediator;

   public MediatorTests()
   {
       var services = new ServiceCollection();

       services.AddMediator("Namespace");

       _mediator = services.BuildServiceProvider().GetRequiredService<IMediator>();
   }

   [TestMethod]
   public void CategoryByIdQuery()
   {
       var query = new CategoryByIdQuery(1);

       var response = _mediator.HandleAsync<CategoryByIdQuery, Category>(query).Result;

       Assert.IsTrue(response.Succeeded && response.Value != default);
   }

   [TestMethod]
   [ExpectedException(typeof(AggregateException))]
   public void DeleteCategoryCommandShouldThrowException()
   {
       var command = new DeleteCategoryCommand(1);

       _mediator.HandleAsync(command).Wait();
   }

   [TestMethod]
   public void InsertCategoryCommand()
   {
       var command = new InsertCategoryCommand("Name");

       var response = _mediator.HandleAsync<InsertCategoryCommand, long>(command).Result;

       Assert.IsTrue(response.Succeeded && response.Value > 0);
   }

   [TestMethod]
   public void InsertCategoryCommandShouldValidationFail()
   {
       var command = new InsertCategoryCommand(string.Empty);

       var response = _mediator.HandleAsync<InsertCategoryCommand, long>(command).Result;

       Assert.IsTrue(response.Failed);
   }

   [TestMethod]
   public void UpdateCategoryCommand()
   {
       var command = new UpdateCategoryCommand(1, "Name");

       var response = _mediator.HandleAsync(command).Result;

       Assert.IsTrue(response.Succeeded);
   }
}

ASP.NET Core Startup Example

public sealed class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddMediator("Namespace");
    }
}

ASP.NET Core Controller Example

public sealed class Controller : ControllerBase
{
    private readonly IMediator _mediator;

    public Controller(IMediator mediator)
    {
        _mediator = mediator;
    }
}

Query

public sealed record CategoryByIdQuery(long Id);

QueryHandler

public sealed class CategoryByIdQueryHandler : IHandler<CategoryByIdQuery, Category>
{
    public Task<Result<Category>> HandleAsync(CategoryByIdQuery request)
    {
        var category = new Category(request.Id, nameof(Category));

        return Task.FromResult(category.Success());
    }
}

Command

public sealed record InsertCategoryCommand(string Name);

CommandHandler

public sealed class InsertCategoryCommandHandler : IHandler<InsertCategoryCommand, long>
{
    public Task<Result<long>> HandleAsync(InsertCategoryCommand request)
    {
        return Task.FromResult(1L.Success());
    }
}

CommandValidator

public class InsertCategoryCommandValidator : AbstractValidator<InsertCategoryCommand>
{
    public InsertCategoryCommandValidator()
    {
        RuleFor(category => category.Name).NotEmpty();
    }
}

Command

public sealed record UpdateCategoryCommand(long Id, string Name);

CommandHandler

public sealed class UpdateCategoryCommandHandler : IHandler<UpdateCategoryCommand>
{
    private readonly IMediator _mediator;

    public UpdateCategoryCommandHandler(IMediator mediator)
    {
        _mediator = mediator;
    }

    public async Task<Result> HandleAsync(UpdateCategoryCommand request)
    {
        var category = new Category(request.Id, request.Name);

        var updatedCategoryEvent = new UpdatedCategoryEvent(category);

        await _mediator.HandleAsync(updatedCategoryEvent).ConfigureAwait(false);

        return Result.Success();
    }
}

Event

public sealed record UpdatedCategoryEvent(Category Category);

EventHandler

public sealed class UpdatedCategoryEventHandler : IHandler<UpdatedCategoryEvent>
{
    public Task<Result> HandleAsync(UpdatedCategoryEvent request)
    {
        return Task.FromResult(Result.Success());
    }
}

Mediator

public interface IMediator
{
    Task<Result> HandleAsync<TRequest>(TRequest request);

    Task<Result<TResponse>> HandleAsync<TRequest, TResponse>(TRequest request);
}

public sealed class Mediator : IMediator
{
    public async Task<Result> HandleAsync<TRequest>(TRequest request) { }

    public async Task<Result<TResponse>> HandleAsync<TRequest, TResponse>(TRequest request) { }
}

public interface IHandler<TRequest>
{
    Task<Result> HandleAsync(TRequest request);
}

public interface IHandler<TRequest, TResponse>
{
    Task<Result<TResponse>> HandleAsync(TRequest request);
}
Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories (1)

Showing the top 1 popular GitHub repositories that depend on DotNetCore.Mediator:

Repository Stars
rafaelfgx/Architecture
.NET 8, Angular 17, Clean Architecture, Clean Code, SOLID Principles, KISS Principle, DRY Principle, Fail Fast Principle, Common Closure Principle, Common Reuse Principle, Acyclic Dependencies Principle, Mediator Pattern, Result Pattern, Folder-by-Feature Structure, Separation of Concerns.
Version Downloads Last updated
18.8.0 263 3/30/2024