How to implement Dapr Subscriber in .net Windows Service? - dapr

Question

I need to implement the Dapr Subscriber in the windows service, I am able to implement it in Asp.Net API. But not in Windows service, Is there any workaround to do this?

Answer 1

There is a trick to implementing this in windows service.
We need to add a controller
[ApiController]
public class DaprController : ControllerBase
{
public DaprController()
{
}
[Topic("pubSubName", "topicName")]
[HttpPost("/topicName")]
public ActionResult ProcessData([FromBody] string data)
{
return Ok();
}
}
Also, we need to add a startup.cs file like this.
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
namespace Publisher
{
public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
services.AddControllers().AddDapr();
services.AddLogging();
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseRouting();
app.UseAuthorization();
app.UseCloudEvents();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
endpoints.MapSubscribeHandler();
});
}
}
}
And add the below code in the Program.cs file.
.ConfigureWebHostDefaults((builder) =>
{
builder.UseStartup<Startup>();
})
Reference: https://learn.microsoft.com/en-us/dotnet/architecture/dapr-for-net-developers/publish-subscribe#use-the-dapr-net-sdk