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Merge pull request #23 from TechNobre/main
Deploy nuget v1.1.0
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‎CHANGELOG.md‎

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## [1.1.0] - 2022-05-29
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[Full Changelog](https://github.com/TechNobre/PowerUtils.AspNetCore.ErrorHandler/compare/v1.0.1...v1.1.0)
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### Enhancements
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- Added support to error code 413 when the payload too large;
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## [1.0.1] - 2022-05-28
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[Full Changelog](https://github.com/TechNobre/PowerUtils.AspNetCore.ErrorHandler/compare/v1.0.0...v1.0.1)
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‎media/test_3_23mb.jpg‎

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‎samples/PowerUtils.AspNetCore.ErrorHandler.Samples/Controllers/FilesController.cs‎

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using Microsoft.AspNetCore.Mvc;
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using PowerUtils.AspNetCore.ErrorHandler.Samples.Models;
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using PowerUtils.Net.Constants;
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namespace PowerUtils.AspNetCore.ErrorHandler.Samples.Controllers;
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[ApiController]
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[Route("files")]
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public class FilesController : ControllerBase
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{
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[HttpPost]
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[Consumes(ExtendedMediaTypeNames.Multipart.FORM_DATA)]
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public IActionResult Upload([FromForm] FileRequest _)
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=> Ok();
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}

‎samples/PowerUtils.AspNetCore.ErrorHandler.Samples/Controllers/ModelStateController.cs‎

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@@ -8,7 +8,7 @@ namespace PowerUtils.AspNetCore.ErrorHandler.Samples.Controllers;
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public class ModelStateController : ControllerBase
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{
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[HttpPost]
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public IActionResult Post(Product _)
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public IActionResult Post(ProductRequest _)
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{
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if(!ModelState.IsValid)
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{

‎samples/PowerUtils.AspNetCore.ErrorHandler.Samples/Models/FileRequest.cs‎

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using Microsoft.AspNetCore.Http;
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namespace PowerUtils.AspNetCore.ErrorHandler.Samples.Models;
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public class FileRequest
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{
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public IFormFile File { get; set; }
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}

samples/PowerUtils.AspNetCore.ErrorHandler.Samples/Models/Product.cs renamed to samples/PowerUtils.AspNetCore.ErrorHandler.Samples/Models/ProductRequest.cs

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namespace PowerUtils.AspNetCore.ErrorHandler.Samples.Models;
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public class Product
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public class ProductRequest
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{
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[Required]
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public string Name { get; set; }

‎samples/PowerUtils.AspNetCore.ErrorHandler.Samples/Startup.cs‎

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using Microsoft.AspNetCore.Authentication.JwtBearer;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Http.Features;
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using Microsoft.Extensions.DependencyInjection;
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using PowerUtils.AspNetCore.Authentication.BasicAuth.Attributes;
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using PowerUtils.AspNetCore.ErrorHandler.Samples.Exceptions;
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options.ExceptionMapper<TestException>(exception => StatusCodes.Status503ServiceUnavailable);
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options.ExceptionMapper<TimeoutException>(exception => StatusCodes.Status504GatewayTimeout);
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});
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// Configurations to payload size
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services.Configure<FormOptions>(options =>
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{
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options.ValueLengthLimit = 1048576; // Default value (4194304 Bytes -> 4 MB) - 1048576 = 1MB
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options.MultipartBodyLengthLimit = 1048576; // Default value (134217728 Bytes -> 128 MB) - 1048576 = 1MB
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options.MemoryBufferThreshold = 1048576; // Default value (65536 Bytes -> 128 MB) - 1048576 = 1MB
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});
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}
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public void Configure(IApplicationBuilder app)

‎src/Handlers/ModelStateMiddleware.cs‎

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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Logging;
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using PowerUtils.Net.Constants;
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var loggerFactory = actionContext.HttpContext.RequestServices.GetRequiredService<ILoggerFactory>();
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var logger = loggerFactory.CreateLogger("ModelStateHandler");
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actionContext.HttpContext.Response.StatusCode = StatusCodes.Status400BadRequest;
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var problemDetails = problemDetailsFactory.Create(actionContext);
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logger.Debug(problemDetails);
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actionContext.HttpContext.ResetResponse();
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actionContext.HttpContext.Response.StatusCode = problemDetails.Status;
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return new BadRequestObjectResult(problemDetails)
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return new ObjectResult(problemDetails)
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{
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StatusCode = problemDetails.Status,
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ContentTypes = { ExtendedMediaTypeNames.ProblemApplication.JSON }
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};
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});

‎src/ModelStateExtensions.cs‎

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using Microsoft.AspNetCore.Mvc.ModelBinding;
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namespace PowerUtils.AspNetCore.ErrorHandler
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{
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internal static class ModelStateExtensions
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{
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private const string BODY_PROPERTY_NAME = "RequestBody";
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public static IDictionary<string, string> MappingModelState(this ModelStateDictionary modelState)
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{
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var modelStateErrors = modelState.Where(s => s.Value.Errors.Count > 0);
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var errors = new Dictionary<string, string>();
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foreach(var modelStateError in modelStateErrors)
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{
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(var property, var error) = modelStateError._mappingModelStateErrors();
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errors.Add(property, error);
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}
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return errors;
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}
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public static IDictionary<string, string> CheckPayloadTooLargeAndReturnError(this ModelStateDictionary modelState)
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{
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var modelStateErrors = modelState.Where(s => s.Value.Errors.Count > 0);
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if(modelStateErrors.Count() != 1)
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{
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return new Dictionary<string, string>();
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}
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var errorMessage = modelStateErrors
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.Single()
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.Value.Errors
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.Select(s => s.ErrorMessage)
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.First()
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.ToLower();
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if("failed to read the request form. multipart body length limit 1048576 exceeded.".Equals(errorMessage))
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{
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var maxSize = errorMessage
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.Replace("failed to read the request form. multipart body length limit ", "")
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.Replace(" exceeded.", "");
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return new Dictionary<string, string>()
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{
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{ BODY_PROPERTY_NAME, "MAX:" + maxSize }
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};
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}
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return new Dictionary<string, string>();
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}
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private static (string Property, string Error) _mappingModelStateErrors(this KeyValuePair<string, ModelStateEntry> modelStateError)
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{
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if(modelStateError.Key.StartsWith("$."))
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{
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return (
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modelStateError.Key[2..],
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"INVALID"
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);
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}
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var error = modelStateError
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.Value
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.Errors
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.Select(s => s.ErrorMessage)
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.First();
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return _mappingError(modelStateError.Key, error);
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}
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private static (string Property, string Error) _mappingError(string property, string error)
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{
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if(property == "$")
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{
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return (BODY_PROPERTY_NAME, "INVALID");
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}
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if("A non-empty request body is required.".Equals(error, StringComparison.InvariantCultureIgnoreCase))
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{
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return (BODY_PROPERTY_NAME, "REQUIRED");
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}
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return (property, error);
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}
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}
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}

‎src/PowerUtils.AspNetCore.ErrorHandler.csproj‎

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<PackageId>PowerUtils.AspNetCore.ErrorHandler</PackageId>
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<title>PowerUtils.AspNetCore.ErrorHandler</title>
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<Product>PowerUtils.AspNetCore.ErrorHandler</Product>
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<Version>1.0.1</Version>
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<Version>1.1.0</Version>
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<Authors>Nelson Nobre</Authors>
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<Company>TechNobre</Company>

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