CCM-10257: Implement Eventpub in Core

Author: jamesthompson26-nhs

infrastructure/modules/eventpub/archive_file_lambda.tf

@@ -0,0 +1,17 @@
+resource "archive_file" "lambda" {
+  type       = "zip"
+  source_dir = "${path.module}/lambda/eventpub/src"
+
+  # Timestamp in path to resolve https://github.com/hashicorp/terraform-provider-archive/issues/39
+  output_path = "${path.module}/lambda/eventpub_${timestamp()}.zip"
+  excludes = [
+    # NodeJS Exclusions
+    "**/__tests__",
+    "**/node_modules",
+    "**/package.json",
+    "**/package-lock.json",
+  ]
+  lifecycle {
+    create_before_destroy = true
+  }
+}

infrastructure/modules/eventpub/lambda_function.tf

@@ -9,8 +9,8 @@ resource "aws_lambda_function" "main" {
   memory_size = 128
   timeout     = 20
 
-  filename         = "${path.module}/lambda/eventpub/eventpub.zip"
-  source_code_hash = base64encode(filesha256("${path.module}/lambda/eventpub/eventpub.zip"))
+  filename         = archive_file.lambda.output_path
+  source_code_hash = archive_file.lambda.output_base64sha256
 
   logging_config {
     application_log_level = var.log_level
@@ -27,6 +27,4 @@ resource "aws_lambda_function" "main" {
       THROTTLE_DELAY_MS           = "0"
     }
   }
-
-  depends_on = [ "null_resource.lambda_zip" ]
 }