Dynamic Functions settings

Question

Dynamic Functions settings

Jona 925

Hi everyone

Let's suppose an app functions's code as follows:

dynamic function

This functions is listening to some event hub inside a event hubs namespace (as you know, a namespace can host several event hubs).

The configuration of the function requires the event hub name. So, my question is ¿can this name be dymamic?

Let's suppose I have 10 event hubs. All this message, not matter the event hub it belongs to, will be proccessed by the same source code. Eventually, I would have to deploy 10 functions changing the event hub name ...

This sounds well (a little weird for me, however), since every function will scale to adapt to the streaming flows of its corresponding event hub ...

¿Can I have just one functions listening to several event hubs dinamically? Like having a Env file to change the event hub name parameter.

Is this a good architectural approach?? the function will scale to adapt to all the event hubs?

Regards

Jonathan

VenkateshDodda-MSFT 25,241 Reputation points Microsoft Employee Moderator

2023-11-28T05:00:11.84+00:00

@Jona Thanks for reaching out of Microsoft Q&A, apologize for any inconvenience caused on this.

No this is not possible using event hub trigger. To achieve your requirement, you need to use Event Hub SDK with any of these triggers such as (HTTP trigger or Timer trigger).

Feel free to reach back to me if you have any further questions on this.
Jona 925 Reputation points

2023-11-28T14:18:55.9433333+00:00

Hi

I don't fully understand you very well. You tell me to use Event Hub SDK with a function with some trigger, but I don't see how my requirement could be fulfilled.

Some process will be pushing messages to these event hubs (ten of them), and my question is wheter a good architectural approach says that each event hub mus have its own function app.

I this case, the same functions would be deployed several times, being parametrized by the event hub name.

Regards

1 answer

Your answer

VenkateshDodda-MSFT 25,241 Reputation points Microsoft Employee Moderator

2023-11-28T05:00:11.84+00:00

@Jona Thanks for reaching out of Microsoft Q&A, apologize for any inconvenience caused on this.

No this is not possible using event hub trigger. To achieve your requirement, you need to use Event Hub SDK with any of these triggers such as (HTTP trigger or Timer trigger).

Feel free to reach back to me if you have any further questions on this.
Jona 925 Reputation points

2023-11-28T14:18:55.9433333+00:00

Hi

I don't fully understand you very well. You tell me to use Event Hub SDK with a function with some trigger, but I don't see how my requirement could be fulfilled.

Some process will be pushing messages to these event hubs (ten of them), and my question is wheter a good architectural approach says that each event hub mus have its own function app.

I this case, the same functions would be deployed several times, being parametrized by the event hub name.

Regards

Answer 1

VenkateshDodda-MSFT 25,241 Microsoft Employee Moderator

@Jona Thanks for your response. Apologize for the confusion here.

I understand your concern but with one function app you can configure one event hub only. there is no way to call event hub dynamically with event hub trigger.

Thats were you I have suggested to use either Http trigger or timer trigger to call different event hub.

In case if any of the function trigger doesn't fill your requirement then you can use container apps or webapps and leverage the event hub SDK to read/listens the events continuously and pass the event hub names dynamically.

Feel free to reach back to me if you have any further question on this.

Jona 925 Reputation points

2023-11-29T16:32:23.21+00:00

Thanks @VenkateshDodda-MSFT ... Could you convert the last comment in a response so that I can mark it as the right answer?

regards
VenkateshDodda-MSFT 25,241 Reputation points Microsoft Employee Moderator

2023-11-30T04:27:02.8366667+00:00

Jona Thanks for your response. I have converted my comment to answer.

Please accept as Yes if the answer provided is useful, so that you can help others in the community looking for remediation for similar issues.

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Dynamic Functions settings

1 answer

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