Webhook support for Amazon SNS in ASP.NET Core

Accept inbound Amazon SNS notification messages.

Configuring Project

1. Add SnsWebHook NuGet package into your project
2. Modify your ConfigureServices method in Startup.cs file

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc()
      .SetCompatibilityVersion(CompatibilityVersion.Version_2_1)
      .AddSnsWebHooks();
}

3. Add Controller class with [SnsWebHook] attribute

public class SnsController : ControllerBase
{
    [SnsWebHook]
    public async Task<IActionResult> SnsHandler(string @event, JObject data)
    {
        if (ModelState.IsValid)
        {
            Console.WriteLine(data.Value<string>("Message"));

            if (@event == "SubscriptionConfirmation")
            {
                var url = data.Value<string>("SubscribeURL");
                var response = await new HttpClient().GetAsync(url);
            }
            else
            {
                Console.WriteLine("Type {0} with payload {1}", @event, data);
            }

            return NoContent();
        }
        else
        {
            return BadRequest(ModelState);
        }
    }
}

Configuring Webhook

See instructions for Getting Started with Amazon SNS on Amazon.

The callback address will be https://server/api/webhooks/incoming/sns and you'll need to replace server with your host.