public static async Task ProcessRequest(HttpContext context, ErrorLog errorLog)
{
var response = context.Response;
response.ContentType = "application/xml";
//
// Retrieve the ID of the requested error and read it from
// the store.
//
var errorId = context.Request.Query["id"].FirstOrDefault();
if (string.IsNullOrEmpty(errorId))
{
throw new ApplicationException("Missing error identifier specification.");
}
var entry = await errorLog.GetErrorAsync(errorId);
//
// Perhaps the error has been deleted from the store? Whatever
// the reason, pretend it does not exist.
//
if (entry == null)
{
context.Response.StatusCode = 404;
}
//
// Stream out the error as formatted XML.
//
var wrappedError = new ErrorWrapper(entry?.Error, errorLog.SourcePaths);
var xmlSerializer = new XmlSerializer(wrappedError.GetType(), new XmlRootAttribute("Error"));
using (var textWriter = new StringWriter())
{
xmlSerializer.Serialize(textWriter, wrappedError);
await response.WriteAsync(textWriter.ToString(), Encoding.UTF8);
}
}