azurerm_windows_function_app not correctly created with Java 11 application stack

[AaldertVanWijk-TomTom]

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Terraform Version

1.1.7

AzureRM Provider Version

3.1.0

Affected Resource(s)/Data Source(s)

azurerm_windows_function_app

Terraform Configuration Files

resource "azurerm_windows_function_app" "this" {
  name                       = local.computed_name
  location                   = azurerm_resource_group.this.location
  resource_group_name        = azurerm_resource_group.this.name
  service_plan_id            = azurerm_service_plan.this.id
  storage_account_name       = azurerm_storage_account.this.name
  storage_account_access_key = azurerm_storage_account.this.primary_access_key

  functions_extension_version = "~4"

  https_only   = true
  app_settings = {
    "API_TOMTOM_KEY" = var.api_tomtom_key
    "WEBSITE_RUN_FROM_PACKAGE" = "1"
    "WEBSITE_ADD_SITENAME_BINDINGS_IN_APPHOST_CONFIG" = 1
    "SCALYR_KEY" = var.scalyr_key
    "STAGE" = var.stage
  }

  site_config {
    application_stack {
      java_version = "11"
    }
    default_documents = []
    http2_enabled = true
    always_on = var.service_plan_sku != "Y1"

    dynamic "ip_restriction" {
      for_each = local.all_ips
      content {
        name       = ip_restriction.key
        ip_address = ip_restriction.value
        action     = "Allow"
        headers    = []
      }
    }
  }

  tags = local.tags
}

Debug Output/Panic Output

none

Expected Behaviour

with azurerm 3.0.2 this deploys a perfectly functional java function app.

Actual Behaviour

with azurerm 3.1.0 the configuration regarding Java is missing/wrong and the app does not function

Steps to Reproduce

deploy a functioning azurerm_windows_function_app with java 11 with azurerm 3.0.2
redeploy with 3.1.0

Important Factoids

No response

References

No response

[AaldertVanWijk-TomTom]

Actually, upon further working with this and going back to azurerm 3.0.2. I Als see it happening there intermittently.
to be honest I don't really have a consistent way of reproducing the issue. (I did taint -> plan -> apply ±10 times and failed 80% of the time)

Also as a general observation. It is worrying to me that if the deployment fails. I see quite different things in the UI of azure, However Terraform does not see any differences.
This indicates to me that the azurerm provider gets an incomplete view of the actual resources in azure. and is unable to compare it properly against it's actual and desired state 🤯

[xiaxyi]

Thanks @AaldertVanWijk-TomTom ,this is Java version issue in TF, I will submit a pr to fix it.

[MajaStojkovic-TomTom]

Is there any ETA on when we could expect the PR with the fix to be merged?

[rcskosir]

Thanks for taking the time to submit this issue. #19685 supersedes #18076, and has been merged. As such I am going to mark this issue as closed. If you are still seeing this issue, please let us know so we can reopen this issue.

[github-actions]

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 have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.