issues while Configuring Event Grid on IoT hub

Pooja Kumari 31

Hi,

While configuring Event Grid on the IoT hub in creating event subscription > endpoint details > select an endpoint > function I am unable to get function name.

Could anyone please let me know where I am missing or doing this incorrect.

I have attached the screenshot for the reference.

Also I am following this document "https://learn.microsoft.com/en-us/learn/modules/ingest-data-into-azure-digital-twins/5-set-up-iot-hub" and in step "Configure Event Grid on your IoT hub" I am getting error.

Regrads,
Pooja Kumari

QuantumCache 20,271 Reputation points

2021-09-23T03:21:11.443+00:00

Hello, @Pooja Kumari Could you please confirm if the Azure Function App & Azure IoTHub are created in the same subscription's resource group?

Please include the full error message so that we help you in a better way!
Pooja Kumari 31 Reputation points

2021-09-23T07:21:38.643+00:00

Hi @QuantumCache , yes both Azure function app and azure IoT hub using the same subscription's resource group.

Also, I don't see any error the only problem I am facing is that I am not getting function details in function while configuring Event Grid on the IoT hub.
Pooja Kumari 31 Reputation points

2021-09-23T07:34:42.323+00:00

one more thing I would like to add on here, while deploying the function in visual studio it deployed successfully but throwed few errors below

Restored C:\Users\My Laptop\Documents\twin\azure_func\azure_func.csproj (in 565 ms).
C:\Users\My Laptop\Documents\twin\azure_func\TwinsFunction.cs(24,27): error AZF0001: Async void can lead to unexpected behavior. Return Task instead. [C:\Users\My Laptop\Documents\twin\azure_func\azure_func.csproj]
The terminal process "C:\Program Files\dotnet\dotnet.exe 'publish', '--configuration', 'Release', '/property:GenerateFullPaths=true', '/consoleloggerparameters:NoSummary'" terminated with exit code: 1.

I guess this can be the reason behind not getting function name.

Accepted answer

QuantumCache 20,271 Reputation points

2021-09-24T04:05:35.657+00:00
Hello, @Pooja Kumari Sorry for the inconvenience caused!

I was able to repro the issue, as the error gives a more accurate reason.

Your Azure FunctionApp is Ready, but the Function code is not ready. That means there is an issue in the Function code.

Please make use of this piece of code: Remove the void word and use the Task

--> public async Task Run([EventGridTrigger] EventGridEvent eventGridEvent, ILogger log)

Please add the declaration as well:

using System.Threading.Tasks;

Note: I have submitted a report to update the MSLearn content on the page, so please make use of the above workaround to get unblocked until it is fixed!!!

Please comment in the below section for further help in this matter!.
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Pooja Kumari 31 Reputation points

2021-09-27T06:11:57.497+00:00

Hi Satish,

Thanks for the solution. It worked and my deployment was successful this time without any errors but as I mentioned I am still not getting function name While configuring Event Grid on the IoT hub in creating event subscription > endpoint details > select an endpoint > function.

Do you think we need to create function in function app on portal? I have pasted the image below for the reference what I am trying to say.

QuantumCache 20,271 Reputation points

2021-09-27T14:09:43.663+00:00

Hello Pooja, When we try to deploy the Function code from the Visual Studio, we select the FunctionApp from our subscription's resource group, and then the deployment happens.

Below, I am trying to revisit the Azure Function code deployment steps, Just FYI.

Yes, in the Azure portal, i have created the Function App as a first step.

Right-click the solution and select Publish -->select the Function App while starting the Deployment.

We see the Publish\Deployment of Function code is a success!

I see the Function is deployed to the selected FunctionApp.

If you need further help in this matter, please comment in the below section and we will be happy to help you offline.

Pooja Kumari 31 Reputation points

2021-09-30T08:25:49.337+00:00

Hi Satish,

I am still getting lot of issues. Is there any way to contact you online apart from here as I have to wait for your reply here and its getting delayed for me.

QuantumCache 20,271 Reputation points

2021-09-30T12:57:30.57+00:00

Hello @Pooja Kumari Sure thing! We are happy to help you offline on this issue.
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