EasyCommand

Installation

EasyCommand.AspNetCore is in pre-release and is available as a NuGet package.

What's this?

EasyCommand trivialises the use of the command pattern in .NET Core and ASP.NET Core.

this.ExecuteAsync(this.Command<GetCommand>());

It is an opinionated, light, command pattern framework.

public class GetCommandParamId : AsyncAspCommand<int, string>
{
    protected override Task<string> ExecuteCommandAsync(int request)
    {
        return Task.FromResult("value");
    }
}

You can execute commands straight from an ASP.NET Core controller (so you can better componentise your code) and this can assist with separating application protocol and business logic.

[HttpGet]
public async Task<ActionResult<IEnumerable<string>>> Get()
{
    return await this.ExecuteAsync(this.Command<GetCommand>());
}

You can call commands from other commands.

public class FirstCommand : AsyncAspCommand<int, int>
{
    protected override async Task<int> ExecuteCommandAsync(int request)
    {
        return await this.ExecuteAsync(this.Command<SecondCommand>(), request);
    }
}

As with ASP.NET controllers, EasyCommand supports the .NET Core service dependency registration and injection model.

public class SecondCommand : AsyncAspCommand<int, int>
{
    private readonly IRandomService randomService;

    public SecondCommand(IRandomService randomService)
    {
        this.randomService = randomService;
    }

    protected override Task<int> ExecuteCommandAsync(int request)
    {
        return Task.FromResult(request + randomService.Next());
    }
}