Support for Azure Function endpoints on EventGrid Subscriptions

[CodingAnarchy]

Community Note

• Please vote on this issue by adding a 👍 reaction to the original issue to help the community and maintainers prioritize this request
• Please do not leave "+1" or "me too" comments, they generate extra noise for issue followers and do not help prioritize the request
• If you are interested in working on this issue or have submitted a pull request, please leave a comment

Description

Azure Functions are a supported endpoint for EventGrid subscription handling, as described in the documentation here.

Currently, azurerm_eventgrid_event_subscription does not support adding such a function as the endpoint.

New or Affected Resource(s)

• azurerm_function_app
• azurerm_eventgrid_event_subscription

Potential Terraform Configuration

resource "azurerm_resource_group" "example" {
  name     = "exampleResourceGroup"
  location = "West US 2"
}

resource "azurerm_eventgrid_event_subscription" "example" {
    name = "example"
    scope = azurerm_resource_group.example.id

   function_endpoint {
       function_app_id = azurerm_function_app.example.id
       function_name = "ExampleFunction"
  }

References

• #0000

[jrauschenbusch]

I already started with an implementation of this. But one has to reference the function endpoint itself (by id) residing inside a function app. Hence one needs to have an already existing function with input binding type eventGridTrigger. As there is currently no way to create a function resource (important: function, not function app) out of the terraform-azurerm-provide, it's nearly impossible to create an acceptance test for it. Hence this would be an only manual tested feature.

One bright spot: there is also a way to deploy Azure functions via the azure-sdk-for-go lib. I've tested a bit using the AppsClient, but it feels like it's not a CRUD-like API. Hence it will not be that easy to write a clean resource type for it.

[ghost]

This has been released in version 2.14.0 of the provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading. As an example:

provider "azurerm" {
    version = "~> 2.14.0"
}
# ... other configuration ...

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. If you feel I made an error 🤖 🙉 , please reach out to my human friends 👉 [email protected]. Thanks!