There are no instrumentationInfos found

[vgary06]

Hi,

I always got this exception when I try to install it. (not API 2)
System.InvalidOperationException: There are no instrumentationInfos found by the discoverer!

    `public override void Install(IDictionary stateSaver)
    {
        base.Install(stateSaver);
        PerfItRuntime.Install(Assembly.GetExecutingAssembly(), new FilterDiscoverer());
    }

    public override void Uninstall(IDictionary savedState)
    {
        base.Uninstall(savedState);
        PerfItRuntime.Uninstall(Assembly.GetExecutingAssembly());
    }`

I did what's in the readme but still cannot see the counters in the PerfMon, neither my PerFit web API project name.

Did I miss something? Because I didn't found any similar Issue in here.

Thanks in advanced.

[aliostad]

Would it be possible to send a repro? Just the project with any sensitive stuff removed.
Also which version are you using? And also what instrumenters are you using? Web API, MVC, SimpleInstrumentor?

[vgary06]

I just created an asp.net Web Api project with default controller and put the PerfitFilter attribute just like in the readme file. After created the installer like I sent you. In the end I ran cmd and tried to register the counter. Which was totally the same as in the "Getting started" phase.
So it isn't necessary to send any kind of code, because I did what the readme showed me. But on the registration I got the error message in cmd that "System.InvalidOperationException: There are no instrumentationInfos found by the discoverer!"
So, I stuck there and I don't know what kind of instrumentationInfos should I create or add and where.
But if you insist, I can send you just not today, only tomorrow I can.

[aliostad]

Assembly loading issues is a common one. This is from Wiki and could be related:

A common problem is to encounter FileNotFoundException when registering your counters using InstallUtil. This is more common when your use Web API 2. In any case, this is a problem with InstallUtil not honouring your assembly redirects. To solve the problem (and it is just a workaround), simply copy the assembly redirect directives to InstallUtil.exe.config, run the installation and then remove them.

This has been raised a few times (see the issues, for example #11) but the problem is simply the way InstallUtil works - or rather doesn't.

What I found the best solution is to include a copy of InstallUtil.exe and its custom config (which works for your project by copying content of assemblyBinding section of the web.config) along with your deployables and have a script to install the counter, rather than relying on the standard InstallUtil on the box. These files are small and certainly a good solution.

Point is here: include a copy of InstallUtil.exe and its custom config (which works for your project by copying content of assemblyBinding section of the web.config

[vgary06]

I copied it and filled the config with the assemblyBinding section but I cannot run the InstallUtil because it still says that:
"System.IO.FileNotFoundException: A(z) "System.Web.Http, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" cannot be loaded, and the system doesn't find the file.

But I have 5.2.3.0. for System.Web.Http. I hope that the .Net Framework 4.6 is not a problem.
Tried to reinstall nuget but still...

[aliostad]

you need you run it from your bin. This is the problem with InstallUtil not perfit.

[vgary06]

I did it right now as you said, but the same problem appeared with a little more extra: "the except HRESULT: 0x80131040."
Which means the located assembly's manifest definition does not match the assembly reference. But how's possible?

[aliostad]

Can you please join gitter?
https://gitter.im/perfIt-dotnet/Lobby?utm_source=share-link&utm_medium=link&utm_campaign=share-link

[aliostad]

OK a couple of things

• you are using PerfIt.WebApi filter against an MVC action. So uninstall Perfit.WebApi and install PerfIt.Mvc. That was the main issue.
• "GetApiCategory" not a good name for the category. category is usually the while API hence change it to "BdNetApiTest".
• Use this code for installer:

        public override void Install(IDictionary stateSaver)
        {
            base.Install(stateSaver);
            CounterInstaller.InstallStandardCounters("BdNetApiTest");
        }

        public override void Uninstall(IDictionary savedState)
        {
            base.Uninstall(savedState);
            CounterInstaller.Uninstall("BdNetApiTest");
        }

That should do the trick. Give it a try and let me know.

[vgary06]

Thank you, I'll try it as soon as I can.
Just one thing: Why was a problem to use PerfIt.WebApi on a MVC API project? I used it because
the exact reason of MVC API should work with PerfIt.WebApi.

[vgary06]

Now It's working and can see the counters, but I can't see the instances of the selected objects.
How can I make it showed in the PerfMon?

UPD: I read the closed issues and got the answer.
Thanks for your help, very much :)