53 lines
2.0 KiB
C#
53 lines
2.0 KiB
C#
using Microsoft.AspNetCore.Http;
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using Microsoft.Extensions.Logging;
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using Microsoft.Extensions.Options;
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namespace DigitalData.Core.Exceptions.Middleware;
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/// <summary>
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/// Middleware for handling exceptions globally in the application.
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/// Captures exceptions thrown during the request pipeline execution,
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/// logs them, and returns an appropriate HTTP response with a JSON error message.
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/// </summary>
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public class GlobalExceptionHandlerMiddleware
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{
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private readonly RequestDelegate _next;
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private readonly ILogger<GlobalExceptionHandlerMiddleware>? _logger;
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private readonly GlobalExceptionHandlerOptions? _options;
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/// <summary>
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/// Initializes a new instance of the <see cref="GlobalExceptionHandlerMiddleware"/> class.
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/// </summary>
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/// <param name="next">The next middleware in the request pipeline.</param>
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/// <param name="logger">The logger instance for logging exceptions.</param>
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public GlobalExceptionHandlerMiddleware(RequestDelegate next, ILogger<GlobalExceptionHandlerMiddleware>? logger = null, IOptions<GlobalExceptionHandlerOptions>? options = null)
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{
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_next = next;
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_logger = logger;
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_options = options?.Value;
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}
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/// <summary>
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/// Invokes the middleware to handle the HTTP request.
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/// </summary>
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/// <param name="context">The HTTP context of the current request.</param>
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/// <returns>A task that represents the asynchronous operation.</returns>
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public async Task InvokeAsync(HttpContext context)
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{
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try
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{
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await _next(context); // Continue down the pipeline
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}
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catch (Exception ex)
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{
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if(ex.GetType() == typeof(Exception) && _options?.DefaultHandler is not null)
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await _options.DefaultHandler.HandleExceptionAsync(context, ex, _logger);
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if (_options?.Handlers.TryGetValue(ex.GetType(), out var handler) ?? false)
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await handler.HandleExceptionAsync(context, ex, _logger);
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}
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}
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}
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