Zionet.Extensions.Command 0.1.6

ZionetCommander

An elementary command dispatcher library that works with .NET Microsoft Dependency Injection

A simple example:

Add the following code to the services setup code:

builder.Services.ConfigureCommander();
builder.Services.AddSingleton<ICommandHandler, Zionet.Extension.Command.Example.Controllers.CommandHandler>();

You may register multiple ICommandHandler types.

Create a handler class:

class CommandHandler : ICommandHandler
{
    private readonly ILogger<WeatherForecastController> _logger;
    private static readonly string[] Summaries = new[]
    {
        "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
    };

    public CommandHandler(ILogger<WeatherForecastController> logger)
    {

        _logger = logger;
    }

    [Command("UpdateForecast")]
    private void OnUpdateForecast(string message, CommandWeatherResult weatherResult)
    {
        weatherResult.Result = Enumerable.Range(1, 5).Select(index => new WeatherForecast
        {
            Date = DateTime.Now.AddDays(index),
            TemperatureC = Random.Shared.Next(-20, 55),
            Summary = Summaries[Random.Shared.Next(Summaries.Length)]
        })
        .ToArray();
    }

    [Command("DoSomething")]
    private void OnCommandB(string message)
    {
        _logger.LogInformation(message);
    }
}

Use the handler:

public class CommandWeatherResult
{
    public WeatherForecast[] Result { get; set; } = Array.Empty<WeatherForecast>();
}

[ApiController]
[Route("[controller]")]
public class WeatherForecastController : ControllerBase, ICommandHandler
{
    private readonly ILogger<WeatherForecastController> _logger;
    private readonly ICommandManager _commandManager;

    public WeatherForecastController(ILogger<WeatherForecastController> logger, ICommandManager commandManager)
    {
        _logger = logger;
        _commandManager = commandManager;
    }

    [HttpGet(Name = "GetWeatherForecast")]
    public IEnumerable<WeatherForecast> Get()
    {
        CommandWeatherResult forecast = new CommandWeatherResult();
        _commandManager.Execute("UpdateForecast", forecast);

        return forecast.Result;
    }

    [HttpPost(Name = "DoSomething")]
    public void Post()
    {
        _commandManager.Execute("DoSomething");
    }
}