Support for creating Azure Function without File Share

[shibayan]

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Description

Azure Functions has an option to operate without File Share, so I think it's more appropriate to add a property (e.g. disabled_builtin_file_share or etc) to not auto-generate WEBSITE_CONTENTSHARE and WEBSITE_CONTENTAZUREFILECONNECTIONSTRING. As mentioned in the documentation, without File Share is a special use case, so it is preferable to use File share by default in Premium plan and non-Linux Consumption.

Currently, there is no way to control the use of File Share, so deployment may fail when using a Storage Account with restricted access.

New or Affected Resource(s)

• azurerm_function_app

Potential Terraform Configuration

# Copy-paste your Terraform configurations here - for large Terraform configs,
# please use a service like Dropbox and share a link to the ZIP file. For
# security, you can also encrypt the files using our GPG public key.
resource "azurerm_function_app" "example" {
  name                       = "test-azure-functions"
  location                   = azurerm_resource_group.example.location
  resource_group_name        = azurerm_resource_group.example.name
  app_service_plan_id        = azurerm_app_service_plan.example.id
  storage_account_name       = azurerm_storage_account.example.name
  storage_account_access_key = azurerm_storage_account.example.primary_access_key

  # Do not set `WEBSITE_CONTENTAZUREFILECONNECTIONSTRING` and `WEBSITE_CONTENTSHARE`.
  disabled_builtin_file_share = true
}

References

• https://docs.microsoft.com/en-us/azure/azure-functions/storage-considerations#create-an-app-without-azure-files
• azurerm_function_app throws error when upgrading from 2.76.0 to 2.77.0 #13566