infra/terraform/modules/a3/common/resource_policy/main.tf

/*
 Copyright 2024 Google LLC

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

      https://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */

resource "google_compute_resource_policy" "new_placement_policy" {
  provider = google-beta
  count    = var.existing_resource_policy_name != null ? 0 : 1
  name     = var.new_resource_policy_name
  project  = var.project_id
  region   = var.region
  group_placement_policy {
    collocation  = "COLLOCATED"
    max_distance = 2
  }

  lifecycle {
    precondition {
      condition     = var.existing_resource_policy_name == null || var.new_resource_policy_name == null
      error_message = "Both existing_resource_policy_name and new_placement_policy cannot be specified together."
    }
  }
}

data "google_compute_resource_policy" "existing_placement_policy" {
  provider = google-beta
  count    = var.existing_resource_policy_name == null ? 0 : 1
  name     = var.existing_resource_policy_name
  project  = var.project_id
  region   = var.region
  lifecycle {
    precondition {
      condition     = var.existing_resource_policy_name == null || var.new_resource_policy_name == null
      error_message = "Both existing_resource_policy_name and new_placement_policy cannot be specified together."
    }
  }
}