Improve API Error Handling #169
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| using Elzik.Breef.Domain; | ||
| using Microsoft.AspNetCore.Diagnostics; | ||
| using Serilog.Context; | ||
| using System.Diagnostics; | ||
|
|
||
| namespace Elzik.Breef.Api.ExceptionHandling; | ||
|
|
||
| public static class ExceptionHandlingExtensions | ||
| { | ||
| public static void AddExceptionHandling(this IServiceCollection services) | ||
| { | ||
| services.AddProblemDetails(); | ||
| } | ||
|
|
||
| public static void UseExceptionHandling(this WebApplication app) | ||
| { | ||
| app.UseExceptionHandler(errorApp => | ||
| { | ||
| errorApp.Run(async context => | ||
| { | ||
| var exceptionHandlerFeature = context.Features.Get<IExceptionHandlerFeature>(); | ||
| var exception = exceptionHandlerFeature?.Error; | ||
| int statusCode; | ||
| string title; | ||
| string detail; | ||
|
|
||
| if (exception is ICallerFixableException) | ||
| { | ||
| if (string.IsNullOrWhiteSpace(exception.Message)) | ||
| { | ||
| throw new InvalidOperationException( | ||
| "Caller-fixable exception must have a non-empty message for the caller to fix.", | ||
| exception); | ||
| } | ||
| statusCode = StatusCodes.Status400BadRequest; | ||
| title = "There was a problem with your request"; | ||
| detail = exception.Message; | ||
| } | ||
| else | ||
| { | ||
| statusCode = StatusCodes.Status500InternalServerError; | ||
| title = "An error occurred while processing your request"; | ||
| detail = "Contact your Breef administrator for a solution."; | ||
| } | ||
|
|
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| var problemDetails = new Microsoft.AspNetCore.Mvc.ProblemDetails | ||
| { | ||
| Status = statusCode, | ||
| Title = title, | ||
| Detail = detail | ||
| }; | ||
|
|
||
| if(Activity.Current != null) | ||
| { | ||
| problemDetails.Extensions["traceId"] = Activity.Current.TraceId.ToString(); | ||
| } | ||
|
|
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| context.Response.StatusCode = statusCode; | ||
| context.Response.ContentType = "application/problem+json"; | ||
| await context.Response.WriteAsJsonAsync(problemDetails); | ||
| }); | ||
| }); | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| namespace Elzik.Breef.Domain | ||
| { | ||
| /// <summary> | ||
| /// Marker interface for exceptions that can be fixed by the requester/user. | ||
| /// </summary> | ||
| public interface ICallerFixableException | ||
| { | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| using Elzik.Breef.Domain; | ||
|
|
||
| namespace Elzik.Breef.Infrastructure | ||
| { | ||
| public class CallerFixableHttpRequestException : HttpRequestException, ICallerFixableException | ||
| { | ||
| public CallerFixableHttpRequestException(string message, Exception? innerException = null) | ||
| : base(message, innerException) | ||
| { | ||
| } | ||
| } | ||
| } |
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