Task <ProblemDetails> IExceptionHandler <TException> .Handle(TException exception, ExceptionHandlerContext context)
{
Log(exception, context);
return(Handle(exception, context));
}
/// <summary> /// Handles an exception of <typeparamref name="TException"/>. /// </summary> /// <param name="exception">Exception to handle.</param> /// <param name="context">Context information.</param> /// <returns>A machine-readable format for specifying errors in HTTP API responses based on https://tools.ietf.org/html/rfc7807. </returns> public abstract Task <ProblemDetails> Handle(TException exception, ExceptionHandlerContext context);
/// <summary>
/// Logs exception through ILogger.LogError.
/// </summary>
/// <param name="exception">Exception to log</param>
/// <param name="context">Context information.</param>
protected virtual void Log(TException exception, ExceptionHandlerContext context)
{
Logger.LogError(exception, "{TraceId}: An unexpected error occurred.", context.TraceId);
}
private async Task <ProblemDetails> InvokeHandler(object exceptionHandler, Exception exception, Type exceptionType, ExceptionHandlerContext handlerContext)
{
try
{
return(await(Task <ProblemDetails>) InvokeGenericHandlerMethodInfo
.MakeGenericMethod(exceptionType)
.Invoke(null, new[] { exceptionHandler, exception, handlerContext }));
}
catch (Exception e)
{
var handlerType = exceptionHandler.GetType();
_logger?.LogError(e, $"Handler of type {handlerType.FullName} threw an unexpected error. " +
"Exception handler middleware will not handle this exception.");
}
return(default);