feat: create request projects for basic CQRS

src/request.dispatcher/IStreamPipelineBehavior.cs

@@ -0,0 +1,35 @@
+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+#pragma warning disable CA1711
+#pragma warning disable CA1716
+
+namespace Geekeey.Request.Dispatcher;
+
+/// <summary>
+/// Represents a behavior in the request pipeline, allowing interception, modification,
+/// or chaining of asynchronous stream requests and responses.
+/// </summary>
+/// <typeparam name="TRequest">The type of the request being processed. Must implement <see cref="IStreamRequest{TResponse}"/>.</typeparam>
+/// <typeparam name="TResponse">The type of the response produced by the implementing request handler.</typeparam>
+public interface IStreamRequestBehavior<in TRequest, TResponse> where TRequest : IStreamRequest<TResponse>
+{
+	/// <summary>
+	/// Handles the asynchronous processing of a request, allowing behavior customization
+	/// such as interception, modification, or chaining of the request and its response.
+	/// </summary>
+	/// <param name="request">The request instance being processed.</param>
+	/// <param name="next">The next delegate in the pipeline to execute after the custom behavior.</param>
+	/// <param name="cancellationToken">A token to monitor for cancellation requests.</param>
+	/// <returns>An asynchronous stream of <typeparamref name="TResponse"/> representing the processed response.</returns>
+	IAsyncEnumerable<TResponse> HandleAsync(TRequest request, StreamHandlerDelegate<TResponse> next, CancellationToken cancellationToken);
+}
+
+/// <summary>
+/// Represents the delegate responsible for handling asynchronous requests in a pipeline.
+/// </summary>
+/// <typeparam name="TResponse">The type of the response produced by the implementing request handler.</typeparam>
+/// <param name="request">The asynchronous request being processed.</param>
+/// <param name="cancellationToken">A token for monitoring cancellation requests.</param>
+/// <returns>An asynchronous stream of responses of type <typeparamref name="TResponse"/>.</returns>
+public delegate IAsyncEnumerable<TResponse> StreamHandlerDelegate<TResponse>(IStreamRequest<TResponse> request, CancellationToken cancellationToken);