ASP.NET Core Extensions

A library that provides extensions and utilities for ASP.NET Core applications, enhancing the framework with additional features and patterns.

Intended Usage

Use this library to extend your ASP.NET Core applications with features such as enhanced exception handling, HTTPS security configuration, action result extensions, and transaction handling.

Installation

Add the package to your project:

dotnet add package Enigmatry.Entry.AspNetCore

Usage Examples

Using the Exception Handling Extensions

using Enigmatry.Entry.AspNetCore.Exceptions; using Microsoft.AspNetCore.Builder; public class Startup { public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { // Add global exception handling middleware app.UseEntryExceptionHandler(); // Other middleware //... } }

Using HTTPS Configuration Extensions

using Enigmatry.Entry.AspNetCore.Security; using Microsoft.AspNetCore.Builder; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Hosting; public class Startup { public void ConfigureServices(IServiceCollection services) { // Setup HTTPS with appropriate settings based on environment services.AddEntryHttps(Environment); } public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { // Configure HTTPS middleware with appropriate settings for the environment app.UseEntryHttps(env); // Other middleware... } }

Using Action Result Extensions

using Enigmatry.Entry.AspNetCore; using Microsoft.AspNetCore.Mvc; using AutoMapper; [ApiController] [Route("api/products")] public class ProductController : ControllerBase { private readonly ProductService _productService; private readonly IMapper _mapper; public ProductController(ProductService productService, IMapper mapper) { _productService = productService; _mapper = mapper; } [HttpGet("{id}")] public ActionResult<ProductDto> GetProduct(int id) { // Use extension method to automatically return NotFound if null var product = _productService.GetProductById(id); return product.ToActionResult(); } [HttpGet("{id}/details")] public ActionResult<ProductDetailsDto> GetProductDetails(int id) { // Use extension method to map and handle not found in one call var product = _productService.GetProductById(id); return _mapper.MapToActionResult<ProductDetailsDto>(product); } }

Using Transaction Filter Attributes

using Enigmatry.Entry.AspNetCore.Filters; using Microsoft.AspNetCore.Mvc; [ApiController] [Route("api/orders")] public class OrdersController : ControllerBase { private readonly OrderService _orderService; public OrdersController(OrderService orderService) { _orderService = orderService; } [HttpPost] [TransactionFilter] // Automatically starts and commits a transaction public async Task<ActionResult<OrderDto>> CreateOrder(CreateOrderRequest request) { var order = await _orderService.CreateOrderAsync(request); return Created($"api/orders/{order.Id}", order); } [HttpDelete("{id}")] [CancelSavingTransaction] // Prevents transaction from being saved when needed public async Task<IActionResult> CancelOrder(int id) { await _orderService.CancelOrderAsync(id); return NoContent(); } }

Summary of Available Features

The Enigmatry.Entry.AspNetCore package provides several utilities and extensions:

1. Exception Handling:

   • UseEntryExceptionHandler() - Configures global exception handling

2. HTTPS Security:

   • AddEntryHttps() - Configures HTTPS services with environment-specific settings
   • UseEntryHttps() - Adds HTTPS middleware with environment-specific settings

3. Action Result Extensions:

   • ToActionResult() - Converts models to ActionResult, handling null cases
   • MapToActionResult<T>() - Maps and converts models to ActionResult in one call

4. Transaction Handling:

   • [TransactionFilter] - Filter attribute for transaction management
   • [CancelSavingTransaction] - Prevents saving in a transaction

5. Validation Extensions:

   • CamelCasePropertyNameResolver - Helps with FluentValidation integration

Integration Example

Here's how to integrate multiple features from the package:

using Enigmatry.Entry.AspNetCore.Exceptions; using Enigmatry.Entry.AspNetCore.Security; using Microsoft.AspNetCore.Builder; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Hosting; public class Startup { public void ConfigureServices(IServiceCollection services) { // Add HTTPS services services.AddEntryHttps(Environment); // Add other services services.AddControllers(); services.AddAutoMapper(typeof(Startup).Assembly); } public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { // Add exception handling app.UseEntryExceptionHandler(); // Add HTTPS middleware app.UseEntryHttps(env); // Other middleware app.UseRouting(); app.UseAuthorization(); app.UseEndpoints(endpoints => { endpoints.MapControllers(); }); } }