From 998e33564865bde3abdb7501b9efe78173381413 Mon Sep 17 00:00:00 2001
From: "Matthew C. Morgan" <matthew.c.morgan@census.gov>
Date: Wed, 16 Apr 2025 12:55:17 -0400
Subject: [PATCH] use data to set version in module

---
 README.md       |  4 ++++
 requirements.tf |  4 ++++
 version.tf      | 27 +++++++++++++++++++++++++--
 3 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index ef22a3a..7134c2a 100644
--- a/README.md
+++ b/README.md
@@ -98,12 +98,14 @@ efs-csi-controller    0         5m
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | ~> 5.14 |
+| <a name="requirement_null"></a> [null](#requirement\_null) | ~> 3.2 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
 | <a name="provider_aws"></a> [aws](#provider\_aws) | 5.88.0 |
+| <a name="provider_null"></a> [null](#provider\_null) | 3.2.3 |
 | <a name="provider_terraform"></a> [terraform](#provider\_terraform) | n/a |
 
 ## Modules
@@ -125,6 +127,8 @@ efs-csi-controller    0         5m
 | [aws_security_group.all_worker_mgmt](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/security_group) | resource |
 | [aws_security_group.extra_cluster_sg](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/security_group) | resource |
 | [aws_security_group_rule.allow_sidecar_injection](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/security_group_rule) | resource |
+| [null_resource.git_version](https://registry.terraform.io/providers/hashicorp/null/latest/docs/resources/resource) | resource |
+| [null_resource.module_name](https://registry.terraform.io/providers/hashicorp/null/latest/docs/resources/resource) | resource |
 | [terraform_data.subnet_validation](https://registry.terraform.io/providers/hashicorp/terraform/latest/docs/resources/data) | resource |
 | [aws_arn.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/arn) | data source |
 | [aws_caller_identity.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/caller_identity) | data source |
diff --git a/requirements.tf b/requirements.tf
index 83145db..ea1dad6 100644
--- a/requirements.tf
+++ b/requirements.tf
@@ -6,5 +6,9 @@ terraform {
       source  = "hashicorp/aws"
       version = "~> 5.14"
     }
+    null = {
+      source  = "hashicorp/null"
+      version = "~> 3.2"
+    }
   }
 }
diff --git a/version.tf b/version.tf
index 12b0e9a..a91119e 100644
--- a/version.tf
+++ b/version.tf
@@ -1,4 +1,27 @@
+resource "null_resource" "git_version" {
+  triggers = {
+    # Force this to run on every apply to get the latest tag value
+    always_run = timestamp()
+  }
+
+  provisioner "local-exec" {
+    command    = "git describe --tags --abbrev=0 2>/dev/null || echo 'unknown' > ${path.module}/.git_tag"
+    on_failure = continue
+  }
+}
+
+resource "null_resource" "module_name" {
+  triggers = {
+    module_path = path.module
+  }
+
+  provisioner "local-exec" {
+    command    = "basename $(pwd) > ${path.module}/.module_name"
+    on_failure = continue
+  }
+}
+
 locals {
-  module_name    = "tfmod-eks"
-  module_version = "0.1.1"
+  module_name    = fileexists("${path.module}/.module_name") ? trimspace(file("${path.module}/.module_name")) : "tfmod-eks"
+  module_version = fileexists("${path.module}/.git_tag") ? trimspace(file("${path.module}/.git_tag")) : "latest"
 }