From ac115774b73fdc7e75902ad18ff0c8463b95836e Mon Sep 17 00:00:00 2001
From: Elie CHARRA <eliecharra@users.noreply.github.com>
Date: Wed, 18 Dec 2024 12:45:37 +0100
Subject: [PATCH] feat: allow to disable deploying database (#23)

---
 README.md    |  3 ++-
 main.tf      |  1 +
 outputs.tf   | 18 +++++++++---------
 variables.tf |  6 ++++++
 4 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/README.md b/README.md
index f8c5dbc..a88e908 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,8 @@ The module creates:
 | ip_cidr_range                   | The IP CIDR range for the subnetwork used by the GKE cluster                                                                                                                                                                                           | string      | 10.0.0.0/16           | no       |
 | secondary_ip_range_for_services | The secondary IP range for the subnetwork used by the GKE cluster. This range is used for services                                                                                                                                                     | string      | 192.168.16.0/22       | no       |
 | secondary_ip_range_for_pods     | The secondary IP range for the subnetwork used by the GKE cluster. This range is used for pods                                                                                                                                                         | string      | 192.168.0.0/20        | no       |
-| enable_external_workers         | Switch this to true if you want to run workers from outside of the GCP infrastructure.                                                                                                                                                                 | string      | false                 | no       |
+| enable_external_workers         | Switch this to true if you want to run workers from outside of the GCP infrastructure.                                                                                                                                                                 | bool      | false                 | no       |
+| enable_database                 | Switch this to false if you don't want to deploy a new Cloud SQL instance for Spacelift.                                                                                                                                                               | bool      | true                  | no       |
 
 ### Outputs
 
diff --git a/main.tf b/main.tf
index c42b67f..7e6070a 100644
--- a/main.tf
+++ b/main.tf
@@ -50,6 +50,7 @@ module "gke" {
 module "db" {
   source = "./modules/db"
   seed   = random_id.seed.hex
+  count = var.enable_database ? 1 : 0
 
   backend_service_account_email = module.iam.backend_service_account_email
   compute_network_id            = module.network.network_id
diff --git a/outputs.tf b/outputs.tf
index 098f6e0..46c5459 100644
--- a/outputs.tf
+++ b/outputs.tf
@@ -81,27 +81,27 @@ output "artifact_repository_url" {
 
 ### Database ###
 output "db_instance_name" {
-  value       = module.db.instance_name
+  value       = var.enable_database ? module.db[0].instance_name : ""
   description = "Name of the database instance"
 }
 
 output "db_connection_name" {
-  value       = module.db.database_connection_name
+  value       = var.enable_database ? module.db[0].database_connection_name : ""
   description = "Connection name of the database cluster. Needs to be passed to the Cloud SQL sidecar proxy See https://cloud.google.com/sql/docs/mysql/connect-kubernetes-engine#proxy"
 }
 
 output "db_private_ip_address" {
-  value       = module.db.database_private_ip_address
+  value       = var.enable_database ? module.db[0].database_private_ip_address : ""
   description = "Private IP address of the database instance."
 }
 
 output "db_database_name" {
-  value       = module.db.database_name
+  value       = var.enable_database ? module.db[0].database_name : ""
   description = "Internal PostgreSQL db name inside the Cloud SQL instance."
 }
 
 output "db_root_password" {
-  value       = module.db.database_root_password
+  value       = var.enable_database ? module.db[0].database_root_password : ""
   description = "The database root password"
   sensitive   = true
 }
@@ -201,10 +201,10 @@ output "shell" {
       OBJECT_STORAGE_BUCKET_UPLOADS_URL              = "https://storage.googleapis.com"
 
       # Database
-      DATABASE_NAME            = module.db.database_name
-      DATABASE_USER            = module.db.database_iam_user
-      DATABASE_CONNECTION_NAME = module.db.database_connection_name
-      DB_ROOT_PASSWORD         = module.db.database_root_password
+      DATABASE_NAME            = var.enable_database ? module.db[0].database_name : ""
+      DATABASE_USER            = var.enable_database ? module.db[0].database_iam_user : ""
+      DATABASE_CONNECTION_NAME = var.enable_database ? module.db[0].database_connection_name : ""
+      DB_ROOT_PASSWORD         = var.enable_database ? module.db[0].database_root_password : ""
 
       #GKE
       GKE_CLUSTER_NAME = module.gke.gke_cluster_name
diff --git a/variables.tf b/variables.tf
index 8b93cbe..8eb6ae6 100644
--- a/variables.tf
+++ b/variables.tf
@@ -28,6 +28,12 @@ variable "app_service_account_name" {
   default     = "spacelift-backend"
 }
 
+variable "enable_database" {
+  type = bool
+  default = true
+  description = "Switch this to false if you don't want to deploy a new Cloud SQL instance for Spacelift."
+}
+
 variable "database_edition" {
   description = "Edition of the Cloud SQL instance. Can be either ENTERPRISE or ENTERPRISE_PLUS."
   default     = "ENTERPRISE"