I have a labeled model with a "label table". This model works well with the latest REST API, but not with the .NET Client Library 3.1.0-beta.4.
In cases where the model predicts an empty cell in the "label table", an InvalidOperationException occurs when the library deserializes the result.
Exception Details
System.InvalidOperationException: The requested operation requires an element of type 'Object', but the target element has type 'Null'. at System.Text.Json.JsonElement.EnumerateObject() at Azure.AI.FormRecognizer.Models.FieldValue_internal.DeserializeFieldValue_internal(JsonElement element) at Azure.AI.FormRecognizer.Models.FieldValue_internal.DeserializeFieldValue_internal(JsonElement element) at Azure.AI.FormRecognizer.Models.FieldValue_internal.DeserializeFieldValue_internal(JsonElement element) at Azure.AI.FormRecognizer.Models.DocumentResult.DeserializeDocumentResult(JsonElement element) at Azure.AI.FormRecognizer.Models.AnalyzeResult.DeserializeAnalyzeResult(JsonElement element) at Azure.AI.FormRecognizer.Models.AnalyzeOperationResult.DeserializeAnalyzeOperationResult(JsonElement element) at Azure.AI.FormRecognizer.FormRecognizerRestClient.GetAnalyzeFormResultAsync(Guid modelId, Guid resultId, CancellationToken cancellationToken) at Azure.AI.FormRecognizer.Models.RecognizeCustomFormsOperation.UpdateStatusAsync(Boolean async, CancellationToken cancellationToken) at Azure.AI.FormRecognizer.Models.RecognizeCustomFormsOperation.UpdateStatusAsync(CancellationToken cancellationToken) at Azure.Core.OperationHelpers.DefaultWaitForCompletionAsync[TResult](Operation1 operation, TimeSpan pollingInterval, CancellationToken cancellationToken) at System.Threading.Tasks.ValueTask1.get_Result() at KKELBelegAnalyzer.BelegAnalyzer.AnalyzeBeleg(Stream streamInput)
For those with the same problem, this will be fixed on the next beta release in May.
See the GitHub issue OP submitted for more details.
Related
I have a Razor Class Library (RCL) that contains both Razor components and pages. This RCL has a folder named "Pages" which contains an Index.razor page and one named Details.razor. I have added the RCL to a Blazor Server project, referenced it, and am trying to let the router in the host project know where to find the Details.razor page (the host project already contains an Index page and will not use the RCL version). Here is my router code from App.razor:
<Router AppAssembly="#typeof(App).Assembly"
AdditionalAssemblies="new[] {
typeof(MyRcl.Pages.Details).Assembly
}">
<Found Context="routeData">
<RouteView RouteData="#routeData" DefaultLayout="#typeof(MainLayout)" />
<FocusOnNavigate RouteData="#routeData" Selector="h1" />
</Found>
<NotFound>
<PageTitle>Not found</PageTitle>
<LayoutView Layout="#typeof(MainLayout)">
<p role="alert">Sorry, there's nothing at this address.</p>
</LayoutView>
</NotFound>
</Router>
Building the project throws the following exception from the last line of the _Host.cshtml file:
#page "/"
#namespace MyProject.Pages
#addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
#{
Layout = "_Layout";
}
<component type="typeof(App)" render-mode="ServerPrerendered" />
System.NullReferenceException: 'Object reference not set to an instance of an object.'
Call stack:
>
MyProject.dll!MyProject.Pages.Pages__Host.ExecuteAsync() Line 8 C#
Microsoft.AspNetCore.Mvc.RazorPages.dll!Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.RazorPageAdapter.ExecuteAsync() Unknown
Microsoft.AspNetCore.Mvc.Razor.dll!Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(Microsoft.AspNetCore.Mvc.Razor.IRazorPage page, Microsoft.AspNetCore.Mvc.Rendering.ViewContext context) Unknown
Microsoft.AspNetCore.Mvc.Razor.dll!Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(Microsoft.AspNetCore.Mvc.Razor.IRazorPage page, Microsoft.AspNetCore.Mvc.Rendering.ViewContext context, bool invokeViewStarts) Unknown
Microsoft.AspNetCore.Mvc.Razor.dll!Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(Microsoft.AspNetCore.Mvc.Rendering.ViewContext context) Unknown
Microsoft.AspNetCore.Mvc.ViewFeatures.dll!Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(Microsoft.AspNetCore.Mvc.Rendering.ViewContext viewContext, string contentType, int? statusCode) Unknown
Microsoft.AspNetCore.Mvc.RazorPages.dll!Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.PageResultExecutor.ExecuteAsync(Microsoft.AspNetCore.Mvc.RazorPages.PageContext pageContext, Microsoft.AspNetCore.Mvc.RazorPages.PageResult result) Unknown
Microsoft.AspNetCore.Mvc.RazorPages.dll!Microsoft.AspNetCore.Mvc.RazorPages.PageResult.ExecuteResultAsync(Microsoft.AspNetCore.Mvc.ActionContext context) Unknown
Microsoft.AspNetCore.Mvc.Core.dll!Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultAsync(Microsoft.AspNetCore.Mvc.IActionResult result) Unknown
Microsoft.AspNetCore.Mvc.RazorPages.dll!Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.PageActionInvoker.InvokeResultAsync(Microsoft.AspNetCore.Mvc.IActionResult result) Unknown
Microsoft.AspNetCore.Mvc.Core.dll!Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext<Microsoft.AspNetCore.Mvc.Filters.IResultFilter, Microsoft.AspNetCore.Mvc.Filters.IAsyncResultFilter>(ref Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.State next, ref Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Scope scope, ref object state, ref bool isCompleted) Unknown
Microsoft.AspNetCore.Mvc.Core.dll!Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeNextResultFilterAsync<Microsoft.AspNetCore.Mvc.Filters.IResultFilter, Microsoft.AspNetCore.Mvc.Filters.IAsyncResultFilter>() Unknown
Microsoft.AspNetCore.Mvc.Core.dll!Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext<Microsoft.AspNetCore.Mvc.Filters.IResultFilter, Microsoft.AspNetCore.Mvc.Filters.IAsyncResultFilter>(ref Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.State next, ref Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Scope scope, ref object state, ref bool isCompleted) Unknown
Microsoft.AspNetCore.Mvc.Core.dll!Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultFilters() Unknown
Microsoft.AspNetCore.Mvc.Core.dll!Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(ref Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.State next, ref Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Scope scope, ref object state, ref bool isCompleted) Unknown
Microsoft.AspNetCore.Mvc.Core.dll!Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeNextResourceFilter() Unknown
Microsoft.AspNetCore.Mvc.Core.dll!Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(ref Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.State next, ref Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Scope scope, ref object state, ref bool isCompleted) Unknown
Microsoft.AspNetCore.Mvc.Core.dll!Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeFilterPipelineAsync() Unknown
Microsoft.AspNetCore.Mvc.Core.dll!Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeAsync() Unknown
Microsoft.AspNetCore.Mvc.RazorPages.dll!Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.PageRequestDelegateFactory.CreateRequestDelegate.AnonymousMethod__0(Microsoft.AspNetCore.Http.HttpContext context) Unknown
Microsoft.AspNetCore.Routing.dll!Microsoft.AspNetCore.Routing.EndpointMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext httpContext) Unknown
Microsoft.AspNetCore.Routing.dll!Microsoft.AspNetCore.Routing.EndpointRoutingMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext httpContext) Unknown
Microsoft.AspNetCore.StaticFiles.dll!Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context) Unknown
Microsoft.AspNetCore.HttpsPolicy.dll!Microsoft.AspNetCore.HttpsPolicy.HttpsRedirectionMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context) Unknown
Microsoft.AspNetCore.HttpsPolicy.dll!Microsoft.AspNetCore.HttpsPolicy.HstsMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context) Unknown
Microsoft.AspNetCore.Diagnostics.dll!Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context) Unknown
Microsoft.AspNetCore.Diagnostics.dll!Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context) Unknown
Microsoft.AspNetCore.HostFiltering.dll!Microsoft.AspNetCore.HostFiltering.HostFilteringMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context) Unknown
Microsoft.WebTools.BrowserLink.Net.dll!Microsoft.WebTools.BrowserLink.Net.BrowserLinkMiddleware.ExecuteWithFilterAsync(Microsoft.WebTools.BrowserLink.Net.IHttpSocketAdapter injectScriptSocket, string requestId, Microsoft.AspNetCore.Http.HttpContext httpContext) Unknown
Microsoft.WebTools.BrowserLink.Net.dll!Microsoft.WebTools.BrowserLink.Net.BrowserLinkMiddleware.InvokeAsync(Microsoft.AspNetCore.Http.HttpContext context) Unknown
Microsoft.AspNetCore.Watch.BrowserRefresh.dll!Microsoft.AspNetCore.Watch.BrowserRefresh.BrowserRefreshMiddleware.InvokeAsync(Microsoft.AspNetCore.Http.HttpContext context) Unknown
Microsoft.AspNetCore.Http.Abstractions.dll!Microsoft.AspNetCore.Builder.Extensions.MapWhenMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext context) Unknown
Microsoft.AspNetCore.Hosting.dll!Microsoft.AspNetCore.Hosting.HostingApplication.ProcessRequestAsync(Microsoft.AspNetCore.Hosting.HostingApplication.Context context) Unknown
Microsoft.AspNetCore.Server.Kestrel.Core.dll!Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests<Microsoft.AspNetCore.Hosting.HostingApplication.Context>(Microsoft.AspNetCore.Hosting.Server.IHttpApplication<Microsoft.AspNetCore.Hosting.HostingApplication.Context> application) Unknown
Microsoft.AspNetCore.Server.Kestrel.Core.dll!Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequestsAsync<Microsoft.AspNetCore.Hosting.HostingApplication.Context>(Microsoft.AspNetCore.Hosting.Server.IHttpApplication<Microsoft.AspNetCore.Hosting.HostingApplication.Context> application) Unknown
Microsoft.AspNetCore.Server.Kestrel.Core.dll!Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2.Http2Stream<Microsoft.AspNetCore.Hosting.HostingApplication.Context>.Execute() Unknown
System.Private.CoreLib.dll!System.Threading.ThreadPoolWorkQueue.Dispatch() Unknown
System.Private.CoreLib.dll!System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() Unknown
System.Private.CoreLib.dll!System.Threading.Thread.StartCallback() Unknown
If I remove the "AdditionalAssemblies" statement from the router configuration the app builds and runs fine, so I am pretty sure that is triggering the error but am unsure on what is causing it (I have double-checked the syntax and compared it with other apps where I have consumed Razor pages from RCLs and the code seems correct). Any help or ideas for further clarifying what the underlying problem might be is appreciated.
Found the issue - will post here in case someone else encounters the same problem as is difficult to identify. It is a variation of a .NET 6 issue described here and here which is slotted for consideration in .NET 7. In my case the issue was the duplicate Index.razor files in the host project and RCL (not the Details.razor file I was trying to consume from the RCL). The duplicate files should not be an issue per MS documentation as the file in the hosting app should take precedence. This was indeed the case until I tried to modify App.razor to consume the Details page from the RCL, at which point the exception occurs (even though I am only referencing the unduplicated Details page and not the Index page in the router code). I can resolve the exception by removing the unused Index page in the RCL (but this is not a permanent solution as it is used in other projects). My workaround for now is to override both of the RCL pages and remove the AdditionalAssemblies statement from App.razor.
we developed an API using .net core 3.1 with async methods.
here the issue is current object value has been overwritten by the subsequent request value.
example:
async Task function(request)
{
var devUser = GetUserDetail(request.userType, request.userId);
var response = await ExecureRequest(request, devUser.name);
}
in the above example
"devUser" object value of Api Request 1 call has been overwritten by the Api Request 2 call
is there any possibilities get this issue in async methods.?
please share me your experience and comments.
The async keyword turns a method into an async method, which allows you to use the await keyword in its body. When the await keyword is applied, it suspends the calling method and yields control back to its caller until the awaited task is complete. await can only be used inside an async method.
"devUser" local variable is no possibilities get this issue in async methods.
Is there any suggestion for PostgreSQL to add type Nvarchar?
This is the error that I am getting:
Npgsql.PostgresException (0x80004005): 42704: type "nvarchar" does not exist
at Npgsql.NpgsqlConnector.<ReadMessage>g__ReadMessageLong|194_0(NpgsqlConnector connector, Boolean async, DataRowLoadingMode dataRowLoadingMode, Boolean readingNotifications, Boolean isReadingPrependedMessage)
at Npgsql.NpgsqlDataReader.NextResult(Boolean async, Boolean isConsuming, CancellationToken cancellationToken)
at Npgsql.NpgsqlDataReader.NextResult()
at Npgsql.NpgsqlCommand.ExecuteReader(CommandBehavior behavior, Boolean async, CancellationToken cancellationToken)
at Npgsql.NpgsqlCommand.ExecuteReader(CommandBehavior behavior, Boolean async, CancellationToken cancellationToken)
at Npgsql.NpgsqlCommand.ExecuteNonQuery(Boolean async, CancellationToken cancellationToken)
at Npgsql.NpgsqlCommand.ExecuteNonQuery()
at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteNonQuery(RelationalCommandParameterObject parameterObject)
at Microsoft.EntityFrameworkCore.Migrations.MigrationCommand.ExecuteNonQuery(IRelationalConnection connection, IReadOnlyDictionary`2 parameterValues)
at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationCommandExecutor.ExecuteNonQuery(IEnumerable`1 migrationCommands, IRelationalConnection connection)
at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration)
at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.UpdateDatabase(String targetMigration, String connectionString, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabaseImpl(String targetMigration, String connectionString, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_0.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Exception data:
Severity: ERROR
SqlState: 42704
MessageText: type "nvarchar" does not exist
Position: 94
File: d:\pginstaller_13.auto\postgres.windows-x64\src\backend\parser\parse_type.c
Line: 274
Routine: typenameType
42704: type "nvarchar" does not exist
Thank you.
"National" string data types are a vestige from the dim and distant past when people still used single-byte encodings like ISO 8859-1 or Windows-1252.
Nowadays we store data using UNICODE encodings, in the case of PostgreSQL, UTF-8. Since you can store any character that way, there is no need for a special data type.
This error occured to me when my last migration (which the update-database command uses) was not for a PostgreSQL connection.
You can try this:
create a new migration with add-migration <name>
clear the database with update-database 0
apply the newly created migration on the database with update-database
In my case, first I was using SQL Server as DB and changed to PostgreSQL. Old migrations were caused the problem type "nvarchar" does not exist. Deleted old migrations and created new migration, updated everything worked fine.
I have an ASP.NET framework web application that processes documents and returns it in a template contract. If I send it a smaller document (143KB) it processes fine and sets the template contract properly (ie. template contract is not null):
Template set properly for smaller file
If I try a larger file (5MB), it receives the request but the template contract is null:
Template contract set to null for larger file
This is the code where the template object is recieved:
[Route("v2/document")]
[HttpPost]
public IHttpActionResult ReportsV2([FromBody] Template template)
{
if (template.Data == null && string.IsNullOrEmpty(template.ConnectionString))
{
if (Log.IsDebugEnabled)
{
LogDebugHeaders();
LogRawIncomingContent();
}
throw new ReportGeneratorException("Template not provided. Specify the Data or Uri element.");
}
So when I use the larger file it hits the conditional statement and throws an error.
Ive also added the following lines to the following lines to the web.config but still got the error:
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="2147483648" />
</requestFiltering>
</security>
This is the exception I get:
System.NullReferenceException
HResult=0x80004003
Message=Object reference not set to an instance of an object.
Source=RESTfulEngine
StackTrace:
at RESTfulEngine.Controllers.ReportsController.ReportsV2(Template template) in C:\Jenova\restfulengine\RESTfulEngine\Controllers\ReportsController.cs:line 95
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass6_2.<GetExecutor>b__2(Object instance, Object[] methodParameters)
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(Object instance, Object[] arguments)
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)
Any ideas as to why this is happening?
I'm building RESTful service using Microsoft ASP.NET Web API.
My problem concerns HttpErrors that Web API throws back to user when something go wrong (e.g. 400 Bad Request or 404 Not Found).
The problem is, that I don't want to get serialized HttpError in response content, as it sometimes provides too much information, therefore it violates OWASP security rules, for example:
Request:
http://localhost/Service/api/something/555555555555555555555555555555555555555555555555555555555555555555555
As a response, I get 400 of course, but with following content information:
{
"$id": "1",
"Message": "The request is invalid.",
"MessageDetail": "The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'MyNamespaceAndMethodHere(Int32)' in 'Service.Controllers.MyController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter."
}
Something like this not only indicates that my WebService is based on ASP.NET WebAPI technology (which isn't that bad), but also it gives some information about my namespaces, method names, parameters, etc.
I tried to set IncludeErrorDetailPolicy in Global.asax
GlobalConfiguration.Configuration.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Never;
Yeah, that did somehow good, now the result doesn't contain MessageDetail section, but still, I don't want to get this HttpError at all.
I also built my custom DelegatingHandler, but it also affects 400s and 404s that I myself generate in controllers, which I don't want to happen.
My question is:
Is there any convinient way to get rid of serialized HttpError from response content? All I want user to get back for his bad requests is response code.
What about using a custom IHttpActionInvoker ?
Basically, you just have to send an empty HttpResponseMessage.
Here is a very basic example :
public class MyApiControllerActionInvoker : ApiControllerActionInvoker
{
public override Task<HttpResponseMessage> InvokeActionAsync(HttpActionContext actionContext, System.Threading.CancellationToken cancellationToken)
{
var result = base.InvokeActionAsync(actionContext, cancellationToken);
if (result.Exception != null)
{
//Log critical error
Debug.WriteLine("unhandled Exception ");
return Task.Run<HttpResponseMessage>(() => new HttpResponseMessage(HttpStatusCode.InternalServerError));
}
else if (result.Result.StatusCode!= HttpStatusCode.OK)
{
//Log critical error
Debug.WriteLine("invalid response status");
return Task.Run<HttpResponseMessage>(() => new HttpResponseMessage(result.Result.StatusCode));
}
return result;
}
}
In Global.asax
GlobalConfiguration.Configuration.Services.Replace(typeof(IHttpActionInvoker), new MyApiControllerActionInvoker());
One other important thing you could do, not related to Web Api, is to remove excessive asp.net & IIS HTTP headers. Here is a good explanation.
I believe your approach of using the message handler is correct because regardless of the component in the Web API pipeline that sets the status code to 4xx, message handler can clear out response body. However, you do want to differentiate between the ones you explicitly set versus the ones set by the other components. Here is my suggestion and I admit it is a bit hacky. If you don't get any other better solution, give this a try.
In your ApiController classes, when you throw a HttpResponseException, set a flag in request properties, like so.
Request.Properties["myexception"] = true;
throw new HttpResponseException(...);
In the message handler, check for the property and do not clear the response body, if the property is set.
var response = await base.SendAsync(request, cancellationToken);
if((int)response.StatusCode > 399 && !request.Properties.Any(p => p.Key == "myException"))
response.Content = null;
return response;
You can package this a bit nicely by adding an extension method to HttpRequestMessage so that neither the ApiController nor the message handler knows anything about the hard-coded string "myException" that I use above.