Use your distributed system easier. Based on DotNetCore.CAP.
First, you need to configure CAP in your Startup.cs：
public void ConfigureServices(IServiceCollection services)
{
//......
services.AddSimpleCap(q =>
{
q.UseInMemoryStorage(); // If you don't have a storage
q.UseKafka("ConnectionString"); // If you use kafka
});
// Optional
// services.Configure<CallbackOptions>(q => q.Timeout = TimeSpan.FromMilliseconds(10));
}Implement handlers. Use one of two interfaces:
ICapEventHandler<MyRequestModel, MyResponseModel>ICapEventHandler<MyRequestModel>
// Optional
// [OverrideSubscribe(Name = "my topic name", Group = "my group name")]
public class MyHandler : ICapEventHandler<MyRequestModel, MyResponseModel>
{
public Task<MyResponseModel> HandleAsync(MyRequestModel model)
{
var res = new MyResponseModel {Message = $"Hi {model.Name}! Are you {model.Age} years old?" };
return Task.FromResult(res);
}
}By default the topic name is MyRequestModel and Group is null, but you can override this by meance of using the attribute OverrideSubscribe. Furthermore, you can use this attribute with a request class MyRequestModel.
Inject ISimpleCapBus in your Controller, Service, etc.
This interface has three methods:
Task SendAsync<TRequest>(TRequest model, string name = null)Task<TResponse> SendAsync<TRequest, TResponse>(TRequest model, string name = null)SimpleCapBusWrapper<TRequest> Request<TRequest>(TRequest model, string name = null)
Controller for example:
[ApiController]
public class Web1Controller : ControllerBase
{
private readonly ISimpleCapBus _bus;
public Web1Controller(ISimpleCapBus bus)
{
_bus = bus;
}
[HttpGet("/api/send")]
public async Task<MyResponseModel> Get()
{
var model = new MyRequestModel
{
Name = "Vitaly",
Age = 26.256m
};
// if you don't need a result
// await _bus.SendAsync(model);
// return default;
// if you need a result
// var res = await _bus.SendAsync<MyRequestModel, MyResponseModel>(model);
// return res;
// If you don't want to write a request type in generic method
// var res = await _bus.Request(model).SendAsync<MyResponseModel>();
// return res;
}
}