I have a simple servicestack self-host app which aside of everything else tries to use authentication. In AppHost constructor i make a call
Plugins.Add(new AuthFeature(() => new AuthUserSession(),
new IAuthProvider[]
{
new RoomsAuthProvider(),
}));
but i always get null reference exception during that call. I've tried separating the calls - create the auth feature in one string, add in another - AuthFeature creation fails. I've also tried calling
Container.Register(new MemoryCacheClient());
This changes nothing. Any ideas are welcome.Stacktrace attached
ServiceStack.AuthFeature.<.ctor>b__a(String s)
ServiceStack.AuthFeature..ctor(Func`1 sessionFactory, IAuthProvider[] authProviders, String htmlRedirect)
CoreServer.Program.AppHost..ctor() в C:\Users\Sorrow\documents\visual studio 2015\Projects\RoomsServicestack\CoreServer\Program.cs
CoreServer.Program.Main(String[] args) в C:\Users\Sorrow\documents\visual studio 2015\Projects\RoomsServicestack\CoreServer\Program
System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
System.Threading.ThreadHelper.ThreadStart()
In AppHost constructor i make a call
Don't register any plugins inside the AppHost constructor, all configuration should happen within AppHost.Configure(), e.g:
public override void Configure(Container container)
{
Plugins.Add(new AuthFeature(() => new AuthUserSession(),
new IAuthProvider[] {
new RoomsAuthProvider(),
}));
}
This is unrelated to your issue, but if you want to register a Caching Provider you need to register against the ICacheClient interface, e.g:
Container.Register<ICacheClient>(new MemoryCacheClient());
Which will let you resolve the dependency via the ICacheClient interface:
var cache = Container.Resolve<ICacheClient>();
This is needed because any built-in Service that uses caching resolves the registered ICacheClient dependency.
Related
Executing this code on Windows 10 Pro with microphone enabled throws an exception.
Any idea why?
using Microsoft.Speech.Recognition;
...
static void Main(string[] args)
{
// Create a SpeechRecognitionEngine object for the default recognizer in the en-US locale.
using (
SpeechRecognitionEngine recognizer =
new SpeechRecognitionEngine(
new System.Globalization.CultureInfo("en-GB")))
{
// Create a grammar for finding services in different cities.
Choices locations = new Choices(new string[] { "office" });
Choices devices = new Choices(new string[] { "lights" ,"shades"});
Choices actions = new Choices(new string[] { "off" , "on", "up", "down"});
GrammarBuilder findServices = new GrammarBuilder("Jarvis");
findServices.Append(locations);
findServices.Append(devices);
findServices.Append(actions);
// Create a Grammar object from the GrammarBuilder and load it to the recognizer.
Grammar servicesGrammar = new Grammar(findServices);
recognizer.LoadGrammarAsync(servicesGrammar);
// Add a handler for the speech recognized event.
recognizer.SpeechRecognized +=
new EventHandler<SpeechRecognizedEventArgs>(recognizer_SpeechRecognized);
// Configure the input to the speech recognizer.
recognizer.SetInputToDefaultAudioDevice();
// throws:
// An unhandled exception of type 'System.InvalidOperationException' occurred in Microsoft.Speech.dll
// Cannot find the requested data item, such as a data key or value.
// Start asynchronous, continuous speech recognition.
recognizer.RecognizeAsync(RecognizeMode.Multiple);
// Keep the console window open.
while (true)
{
Console.ReadLine();
}
}
}
Microphone enabled:
Exception:
'System.InvalidOperationException'
{"Cannot find the requested data item, such as a data key or value."}
at Microsoft.Speech.Recognition.RecognizerBase.SetInputToDefaultAudioDevice()
at Napoleon.Program.Main(String[] args) in C:\voice_recognition\Program.cs:line 42
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
In my company we are using SimpleInjector as our IoC framework and are now looking at using Rebus as a wrapper for sending messages via RabbitMq. I am looking for help in creating a working example. I have tried the following code:
using Rebus.Activation;
using Rebus.Config;
using Rebus.Handlers;
using Rebus.Pipeline;
using Rebus.RabbitMq;
using Rebus.SimpleInjector;
using SimpleInjector;
using System;
using System.Threading.Tasks;
namespace SearchType.ProjectionA
{
class Program
{
static void Main(string[] args)
{
var container = new Container();
container.Register<IContainerAdapter, SimpleInjectorContainerAdapter>();
container.Register<IHandleMessages<string>, Handler>();
var adapter = container.GetInstance<IContainerAdapter>();
var bus = Configure.With(adapter)
.Logging(l => l.ColoredConsole())
.Transport(t => t.UseRabbitMq("amqp://localhost", "simpleinjector_consumer"))
.Start();
bus.Subscribe<string>().Wait();
Console.WriteLine("Projection A listening - press ENTER to quit");
Console.ReadLine();
}
}
public class Handler : IHandleMessages<string>
{
public Task Handle(string message)
{
return Task.Run(() =>
{
Console.WriteLine(string.Format("{0} - {1}", MessageContext.Current.Message.Headers["rbs2-corr-id"], message));
});
}
}
}
When i try and run this console application I am getting the following error:
System.InvalidOperationException was unhandled
HResult=-2146233079
Message=The container can't be changed after the first call to GetInstance, GetAllInstances and Verify. The following stack trace describes the location where the container was locked:
at SearchType.ProjectionA.Program.Main(String[] args) in C:\HRG\TravTech\Springboard\SearchType\SearchType.ProjectionA\Program.cs:line 34
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
Source=SimpleInjector
StackTrace:
at SimpleInjector.Container.ThrowWhenContainerIsLocked()
at SimpleInjector.Container.AddRegistration(Type serviceType, Registration registration)
at SimpleInjector.Container.RegisterSingleton[TService](TService instance)
at Rebus.SimpleInjector.SimpleInjectorContainerAdapter.SetBus(IBus bus)
at Rebus.Config.RebusConfigurer.Start()
at SearchType.ProjectionA.Program.Main(String[] args) in C:\HRG\TravTech\Springboard\SearchType\SearchType.ProjectionA\Program.cs:line 36
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
Does anyone know what I can do to fix this? I don't want to have to declare all the dependencies myself.
Edit: thank you Steven for your reply. I have changed the code according to your answer and am now getting a different error.
System.InvalidOperationException was unhandled
HResult=-2146233079
Message=The configuration is invalid. Creating the instance for type IMessageContext failed. The registered delegate for type IMessageContext threw an exception. Attempted to inject the current message context from MessageContext.Current, but it was null! Did you attempt to resolve IMessageContext from outside of a Rebus message handler?
Source=SimpleInjector
StackTrace:
at SimpleInjector.InstanceProducer.VerifyInstanceCreation()
at SimpleInjector.Container.VerifyInstanceCreation(InstanceProducer[] producersToVerify)
at SimpleInjector.Container.VerifyThatAllRootObjectsCanBeCreated()
at SimpleInjector.Container.VerifyInternal(Boolean suppressLifestyleMismatchVerification)
at SimpleInjector.Container.Verify()
at SearchType.ProjectionA.Program.Main(String[] args) in C:\HRG\TravTech\Springboard\SearchType\SearchType.ProjectionA\Program.cs:line 27
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
HResult=-2146233088
Message=The registered delegate for type IMessageContext threw an exception. Attempted to inject the current message context from MessageContext.Current, but it was null! Did you attempt to resolve IMessageContext from outside of a Rebus message handler?
Source=SimpleInjector
StackTrace:
at SimpleInjector.InstanceProducer.GetInstance()
at SimpleInjector.InstanceProducer.VerifyInstanceCreation()
InnerException:
HResult=-2146233079
Message=Attempted to inject the current message context from MessageContext.Current, but it was null! Did you attempt to resolve IMessageContext from outside of a Rebus message handler?
Source=Rebus.SimpleInjector
StackTrace:
at Rebus.SimpleInjector.SimpleInjectorContainerAdapter.<SetBus>b__7()
at lambda_method(Closure )
at SimpleInjector.InstanceProducer.BuildAndReplaceInstanceCreatorAndCreateFirstInstance()
at SimpleInjector.InstanceProducer.GetInstance()
InnerException:
The error indicates that IMessageContext can only be instantiated inside a message handler. Is there a way to ignore certain errors?
I think the exception is clear; Simple Injector prevents registration after you already resolved. Reasons for doing this are described here.
The solution is to manually create the SimpleInjectorContainerAdapter and prevent relying on the container's auto-wiring capability for the adapter:
var container = new Container();
IContainerAdapter adapter = new SimpleInjectorContainerAdapter(container);
container.Register<IHandleMessages<string>, Handler>();
var bus = Configure.With(adapter)
.Logging(l => l.ColoredConsole())
.Transport(t => t.UseRabbitMq("amqp://localhost", "simpleinjector_consumer"))
.Start();
container.Verify();
When viewing the page source for a page I use CTRL-F to find all occurrences of "id=", which gives me 82 results. What I want to do is to extract only the numbers after the "id=". For example, if the attribute is id=344 then I only want to get the 344 as string and add it to the List.
The way I'm doing it now I'm not getting links I thought I will get all the links this way and make filter after it but I'm getting empty string and some texts nothing from what I wanted. I guess doing InnerText is wrong.
Source View
idsnumbers = new List<string>();
HtmlWeb hw = new HtmlWeb();
HtmlAgilityPack.HtmlDocument doc = hw.Load("http://www.tapuz.co.il/forums2008/");
foreach (HtmlNode link in doc.DocumentNode.SelectNodes("//a[#href]"))
{
idsnumbers.Add(link.InnerText);
}
Update getting null exception:
System.NullReferenceException was unhandled
_HResult=-2147467261
_message=Object reference not set to an instance of an object.
HResult=-2147467261
IsTransient=false
Message=Object reference not set to an instance of an object.
Source=WindowsFormsApplication1
StackTrace:
at WindowsFormsApplication1.Form1..ctor() in d:\C-Sharp\Tapuz Images\WindowsFormsApplication1\WindowsFormsApplication1\Form1.cs:line 50
at WindowsFormsApplication1.Program.Main() in d:\C-Sharp\Tapuz Images\WindowsFormsApplication1\WindowsFormsApplication1\Program.cs:line 19
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
You should read ids from the attributes. InnerText is just for the text inside the tag, between the opening and closing brackets. So:
foreach (HtmlNode link in doc.DocumentNode.SelectNodes("//a[#href]"))
{
idsnumbers.Add(link.Attributes["id"].Value);
}
And if you want to further extract only numbers from ids, you could use RegEx or int.TryParse.
I am using Fluent Migrator 1.2.1
and i am getting exception while i am trying to create synonym
Object reference not set to an instance of an object.
StackTrace :
at FluentMigrator.Builders.Execute.ExecuteExpressionRoot.Sql(String sqlStatement)
at Tavisca.Catapult.Database.Rates.Migrations._004TagsAtProductLevel.Up() in d:\Projects\IMS\Git Source\tavisca-catapult-databases\Tavisca.Catapult.Database.Migrations\Tavisca.Catapult.Database.Rates\Migrations\004TagsAtProductLevel.cs:line 27
at Tavisca.Catapult.Database.Migrator.Program.Main(String[] args) in d:\Projects\IMS\Git Source\tavisca-catapult-databases\Tavisca.Catapult.Database.Migrations\Tavisca.Catapult.Database.Migrator\Program.cs:line 17
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
migration code is as follows
var contentDbConnectionString =
ConfigurationManager.ConnectionStrings["DBContent"].ConnectionString;
var ratesDbConnectionString =
ConfigurationManager.ConnectionStrings["DBRate"].ConnectionString;
var contentDbConnectionStringBuilder = new SqlConnectionStringBuilder(contentDbConnectionString);
var sqlConnectionBuilder = new SqlConnectionStringBuilder(ratesDbConnectionString);
var command = "CREATE SYNONYM [dbo].[Table1] FOR [" + sqlConnectionBuilder.DataSource + "].[" + contentDbConnectionStringBuilder.InitialCatalog + "].[dbo].[Table1];" +
"CREATE SYNONYM [dbo].[Table2] FOR [" + sqlConnectionBuilder.DataSource + "].["+ contentDbConnectionStringBuilder.InitialCatalog + "].[dbo].[Table2];";
Execute.Sql(command); // Exception will come here.
same script runs perfectly fine in query analyzer and synonym works too.
My library is using isolated storage but only does so on demand. So I'm using Lazy<T>.
However, this throws:
System.IO.IsolatedStorage.IsolatedStorageException "Unable to determine granted permission for assembly."
Does Lazy do something weird with threads that confuses isolated storage initialization?
Sample code:
using System;
using System.IO.IsolatedStorage;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
var thisWorks = IsolatedStorageFile.GetMachineStoreForAssembly();
thisWorks.Dispose();
var lazyStorage = new Lazy<IsolatedStorageFile>(IsolatedStorageFile.GetMachineStoreForAssembly);
var thisFails = lazyStorage.Value;
thisFails.Dispose();
}
}
}
Full stack trace:
System.IO.IsolatedStorage.IsolatedStorageException was unhandled
Message=Unable to determine granted permission for assembly.
Source=mscorlib
StackTrace:
Server stack trace:
at System.IO.IsolatedStorage.IsolatedStorage.InitStore(IsolatedStorageScope scope, Type domainEvidenceType, Type assemblyEvidenceType)
at System.IO.IsolatedStorage.IsolatedStorageFile.GetMachineStoreForAssembly()
at System.Lazy`1.CreateValue()
Exception rethrown at [0]:
at System.IO.IsolatedStorage.IsolatedStorage.InitStore(IsolatedStorageScope scope, Type domainEvidenceType, Type assemblyEvidenceType)
at System.IO.IsolatedStorage.IsolatedStorageFile.GetMachineStoreForAssembly()
at System.Lazy`1.CreateValue()
at System.Lazy`1.LazyInitValue()
at System.Lazy`1.get_Value()
at ConsoleApplication1.Program.Main(String[] args) in C:\Users\Andrew Davey\AppData\Local\Temporary Projects\ConsoleApplication1\Program.cs:line 19
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
Looks like it's because you're passing in a MethodGroup (rather than a delegate/lambda directly), and it's unable to figure out where the call originally came from. If you switch it to this:
var lazyStorage = new Lazy<IsolatedStorageFile>(() => IsolatedStorageFile.GetMachineStoreForAssembly());
It should work ok.