Netcode-Hub

1. Product Controller Test Description  This class, ProductControllerTest , is a set of integration tests for the ProductController in a .NET Web API project. The tests are implemented using xUnit, a popular testing framework for .NET, and they utilize FluentAssertions for assertions and Newtonsoft.Json for JSON serialization and deserialization. The class uses IClassFixture to create a test fixture, which ensures that a single instance of the ProductWebApplicationFactory<Program> is used across all tests, enabling shared setup and teardown logic. Purpose The purpose of these tests is to ensure that the ProductController behaves correctly under various conditions. Each test method simulates an HTTP request to the API and verifies the response. This setup allows the tests to cover a range of scenarios, including retrieving products, handling cases where no products exist, and managing operations like creating, updating, and deleting products. Key Components HttpClient : The _c

  Description | Custom AuthenticationHandler This code defines a custom authentication handler for a .NET Web API using access tokens. The handler is implemented by the CustomAuthenticationHandler class, which inherits from AuthenticationHandler<AuthenticationSchemeOptions> . Here's a breakdown of its functionality: Namespace and Imports : The code is organized under the DemoAccessTokenAuthInWebApi.Scheme namespace and uses various namespaces for authentication, Entity Framework Core, logging, and security. Constructor : The constructor initializes the handler with necessary services such as options, logger, URL encoder, and an instance of AuthDbContext , which is used for database interactions. HandleAuthenticateAsync Method : This method handles the authentication logic: It retrieves the authorization header from the incoming request. If the header is missing, it returns an authentication failure result. The token is extracted, decoded, and parsed to retrieve the user ID.

Authentication Detailed Description Add Database Connection We start by setting up a database connection using Entity Framework Core. In this example, SQLite is used as the database provider. By specifying a connection string, we ensure that the application has a designated database file ( DemoDb.db ) where all data, including user and role information, will be stored and managed. Add Identity ASP.NET Core Identity is integrated to handle user authentication and authorization. This setup includes: User and Role Management: Configuring Identity to use default classes for users and roles. Entity Framework Integration: Specifying that Identity should utilize Entity Framework Core with our designated DbContext for managing user and role data. Role-Based Authorization: Enabling the application to support roles, which can be used to enforce access control throughout the application. Add JWT Authentic

Load Balancing Description   The provided code snippet demonstrates how to set up load balancing using YARP (Yet Another Reverse Proxy) in an ASP.NET Core application. The GetClusters method returns a list of cluster configurations, each defining how traffic is distributed among multiple destinations. Below is a detailed explanation focusing on the load balancing aspect. Method Overview The GetClusters method defines clusters, which are logical groups of destinations (service instances) that can handle incoming requests. Each cluster can have a unique load balancing policy to distribute traffic efficiently. Defining Clusters The method returns a list of ClusterConfig objects, each representing a cluster with specific settings and destinations. Product Cluster ClusterId : A unique identifier for the cluster, in this case, product-cluster . Destinations : A dictionary of destination configurations. Each destination has a unique key and an address. This cluster includes three destinati

  Memory Cache Service Description This code provides a robust implementation of an in-memory caching service using the IMemoryCache interface from the Microsoft.Extensions.Caching.Memory namespace. The implementation is divided into an interface and a concrete class to promote abstraction and dependency injection. IMemoryCacheService Interface The IMemoryCacheService interface defines the contract for the caching service, ensuring that any implementation of this interface will provide the following methods: SetCache : Parameters : string key : The unique identifier for the cached item. object value : The object to be stored in the cache. int expirationInSeconds : The time in seconds after which the cached item will expire. Description : This method stores a value in the cache with the specified key and sets an expiration time for the cached item. GetCache : Parameters : string key : The unique identifier for the cached item. Returns : string Description : This method retrieves the

  Description The BasicConfiguration class in the ApiGateway.Configurations namespace provides the configuration settings for YARP (Yet Another Reverse Proxy). This class defines the routing and clustering configurations required to direct API requests to appropriate backend services. Routes Configuration PRODUCT API Route ID : product-route Cluster ID : product-cluster Match : Configures the URL path pattern to route requests with paths starting with /api/product/{**catch-all} to the product-cluster . ORDER API Route ID : order-route Cluster ID : order-cluster Match : Configures the URL path pattern to route requests with paths starting with /api/order/{**catch-all} to the order-cluster . Clusters Configuration Product Cluster Cluster ID : product-cluster Destinations : A dictionary defining the destination for the product-cluster . It maps to the backend service located at http://localhost:5001 . Order Cluster Cluster ID : order-cluster Destinations : A dictionary defining the de

Reading Excel Files in a Blazor App This Blazor component allows users to upload and read Excel files, displaying the contents in an HTML table. It leverages the EPPlus library for reading Excel files and incorporates a custom file upload component from NetcodeHub . Key Features File Upload Component The component integrates NetcodeHubFileUpload , a custom file upload component designed to handle file uploads in Blazor applications. It is configured to accept only .xlsx files by setting the RequiredExtensions property to [".xlsx"] . The Multiple property is set to false , restricting the upload to a single file at a time. The ShowDisplay property is set to true , which likely displays a progress bar or some visual indicator during the upload process. The Notify event is hooked to a method called RetrieveFiles , which processes the uploaded file. Error Display Any errors encountered during

  Unit Testing OrdersController in .NET 8 Web API with FakeItEasy and FluentAssertions - OrdersControllerTest.cs In this tutorial, we explore how to unit test the OrdersController in a .NET 8 Web API project. By leveraging the power of FakeItEasy for mocking dependencies and FluentAssertions for writing expressive assertions, we ensure that our controller behaves as expected. We'll cover various scenarios to validate the controller's actions, including retrieving client orders and order details. Here’s what we’ll cover: 1. Setting Up the Test Environment We'll start by configuring our test environment. Using FakeItEasy , we create mock instances of our service dependencies, and we initialize the OrdersController with these mocks. 2. Testing GetClientOrders Action Valid Client ID : We'll verify that when a valid client ID is provided, the controller returns an OK result with the expected list of orders. No Orders Found : We'll handle the scenario where no orders

Ocelot Configuration File - ocelot.json This configuration file sets up routes for an API Gateway using Ocelot. The gateway manages requests for three main services: Authentication, Product, and Order APIs. Here's a detailed description of each section: Authentication Routes Path : /api/authentication/{everything} Host : localhost:5000 Methods : GET, POST, PUT, DELETE Rate Limiting : Allows 1 request per 10 seconds. Product Routes Get All Products Path : /api/products Host : localhost:5001 Method : GET Caching : 60 seconds with custom header eCommerce-Caching-Control . Get Product By ID Path : /api/products/{id} Host : localhost:5001 Method : GET Caching : 60 seconds with custom header eCommerce-Caching-Control . Modify Products Path : /api/products/{everything} Host : localhost:5001 Methods : POST, PUT, DELETE Authentication : Bearer token required. Order Routes Get All Orders Path : /api/orders Host : localhost:5002 Method : GET Caching : 20 seconds with custom header eCommerce-C