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Receivers

Receiving Webhooks

The framework also provides a set of services that can be used to receive webhooks from external systems and to process them.

To do so, you need to add the Deveel.Webhooks.Receiver.AspNetCore library to your project, which must be an ASP.NET Core application.

You can add the library to your project using the dotnet command line tool:

dotnet add package Deveel.Webhooks.Receiver.AspNetCorebas

or add the following line to your csproj file:

<PackageReference Include="Deveel.Webhooks.Receiver.AspNetCore" Version="1.1.6" />

Configuring the Receiver

The receiver is configured using the AddWebhooksReceiver extension method on the IServiceCollection interface.

To run the receiver, you need to add the UseWebhooksReceiver middleware to the pipeline of your application, specifying the path where the receiver will be listening for the incoming webhooks.

When the service is configured with a webhook receiver, this will be invoked when a webhook is received, allowing the processing of the incoming webhook.

using System;

using Microsoft.Extensions.Configuration;

using Deveel.Webhooks;

namespace Example {
    public class Startup {
        public Startup(IConfiguration configuration) {
            Configuration = configuration;
        }
        
        public IConfiguration Configuation { get; }
        
        public void Configure(IServiceCollection services) {
            services.AddWebhooksReceiver<MyWebhook>()
                .AddHandler<MyWebhookHandler>();
        }
        
        public void Configure(IApplicationBuilder app) {
            app.UseRouting();
            app.UseWebhooksReceiver("/my-webhook");
        }
    }
}

The AddWebhooksReceiver method accepts a generic type parameter that specifies the type of the webhook that will be received by the receiver: this allows to accept and process multiple webhooks in the same application.

Handling Webhooks

The receiver will invoke the registered handlers in the order they are registered, that allows to process the incoming webhook in a pipeline.

Handlers can use dependency injection to access the services registered in the application.

using System;

using Deveel.Webhooks;

namespace Example {
    public class MyWebhookHandler : IWebhookHandler<MyWebhook> {
        private readonly ILogger<MyWebhookHandler> logger;
        
        public MyWebhookHandler(ILogger<MyWebhookHandler> logger) {
            this.logger = logger;
         }
         
         public Task HandleAsync(MyWebhook webhook, CancellationToken cancellationToken) {
             logger.LogInformation("Received webhook {0}", webhook.Id);
             
             // Do something with the webhook
         }
     }
}

The framework provides a set of libraries that can be used to receive webhooks from external sources.

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