All Languages >> C# >> authenticatecoreasync owin not hadling exception handlers

“authenticatecoreasync owin not hadling exception handlers” Code Answer

authenticatecoreasync owin not hadling exception handlers

csharp by Wandering Walrus on Jun 23 2020 Comment

using AppFunc = Func<IDictionary<string, object>, Task>;

public class OwinExceptionHandlerMiddleware
{
    private readonly AppFunc _next;

    public OwinExceptionHandlerMiddleware(AppFunc next)
    {
        if (next == null)
        {
            throw new ArgumentNullException("next");
        }

        _next = next;
    }

    public async Task Invoke(IDictionary<string, object> environment)
    {
        try
        {
            await _next(environment);
        }
        catch (Exception ex)
        {
            try
            {

                var owinContext = new OwinContext(environment);

                NLogLogger.LogError(ex, owinContext);

                HandleException(ex, owinContext);

                return;
            }
            catch (Exception)
            {
                // If there's a Exception while generating the error page, re-throw the original exception.
            }
            throw;
        }
    }
    private void HandleException(Exception ex, IOwinContext context)
    {
        var request = context.Request;

        //Build a model to represet the error for the client
        var errorDataModel = NLogLogger.BuildErrorDataModel(ex);

        context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
        context.Response.ReasonPhrase = "Internal Server Error";
        context.Response.ContentType = "application/json";
        context.Response.Write(JsonConvert.SerializeObject(errorDataModel));

    }

}

public static class OwinExceptionHandlerMiddlewareAppBuilderExtensions
{
    public static void UseOwinExceptionHandler(this IAppBuilder app)
    {
        app.Use<OwinExceptionHandlerMiddleware>();
    }
}

Source: stackoverflow.com

Add a Grepper Answer