Merge pull request #764 from Hestia-Homes/deploy-backend-with-terraform

Deploy backend with terraform #1: create Engine Lambda ECR

infrastructure/terraform/lambda/engine/main.tf

@@ -0,0 +1,25 @@
+data "terraform_remote_state" "shared" {
+  backend = "s3"
+  config = {
+    bucket = "assessment-model-terraform-state"
+    key = "env:/${var.stage}/terraform.tfstate"
+    region = "eu-west-2"
+  }
+}
+
+module "lambda" {
+  source = "../modules/lambda_with_sqs"
+
+  name  = "engine"
+  stage = var.stage
+
+  image_uri = local.image_uri
+
+  # Optional: Set maximum_concurrency to limit concurrent SQS-triggered invocations (2-1000)
+  maximum_concurrency = var.maximum_concurrency
+
+  environment = {
+    STAGE = var.stage
+    LOG_LEVEL = "info"
+  }
+}

infrastructure/terraform/lambda/engine/provider.tf

@@ -0,0 +1,16 @@
+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 4.16"
+    }
+  }
+
+  backend "s3" {
+    bucket = "engine-terraform-state"
+    key    = "terraform.tfstate"
+    region = "eu-west-2"
+  }
+
+  required_version = ">= 1.2.0"
+}

infrastructure/terraform/lambda/engine/variables.tf

@@ -0,0 +1,32 @@
+variable "lambda_name" {
+  type        = string
+  description = "Logical name of the lambda (e.g. address2uprn)"
+}
+
+variable "stage" {
+  description = "Deployment stage (e.g. dev, prod)"
+  type        = string
+}
+variable "ecr_repo_url" {
+  type        = string
+  description = "ECR repository URL (no tag, no digest)"
+}
+
+variable "image_digest" {
+  type        = string
+  description = "Image digest (sha256:...)"
+}
+
+variable "maximum_concurrency" {
+  type        = number
+  default     = 12
+  description = "Maximum number of concurrent Lambda invocations from SQS (2-1000). null = no limit."
+}
+
+locals {
+  image_uri = "${var.ecr_repo_url}@${var.image_digest}"
+}
+
+output "resolved_image_uri" {
+  value = local.image_uri
+}

infrastructure/terraform/shared/main.tf

@@ -414,4 +414,19 @@ module "categorisation_registry" {
   source = "../modules/container_registry"
   name   = "categorisation"
   stage = var.stage
+}
+
+################################################
+# Engine – Lambda ECR
+################################################
+module "engine_state_bucket" {
+  source      = "../modules/tf_state_bucket"
+  bucket_name = "engine-terraform-state"
+
+}
+
+module "engine_registry" {
+  source = "../modules/container_registry"
+  name   = "engine"
+  stage = var.stage
 }