terraform-workaround

terraform-workaround.tf

## Get an access token using standard cli functionality
data "external" "token" {
  program = ["az", "account", "get-access-token"]
}

## Put the access token in a local variable for ease of use
locals {
  accessToken = data.external.token.result["accessToken"]
}

## Get the app settings for the function app, if the app doesn't exist, this will not fail/terminate the terraform apply
data "http" "resource" {
  url    = "https://management.azure.com/subscriptions/${var.subscription_id}/resourceGroups/${var.resource_group_name}/providers/Microsoft.Web/sites/${var.site_name}/config/appsettings/list?api-version=2022-03-01"
  method = "POST"

  request_headers = {
    Accept        = "application/json"
    Authorization = "Bearer ${local.accessToken}"
  }
}

# # Just for debug purposes
# output "result" {
#   value = data.http.resource.response_body
# }

locals {
  appsettings = data.http.resource.status_code == 200 ? jsondecode(data.http.resource.response_body)["properties"] : null
}

output "appsettings" {
  value = local.appsettings
}