From 88f4bb7ddf4e795a99d143211d254b87e914153e Mon Sep 17 00:00:00 2001
From: "Matthew C. Morgan" <matthew.c.morgan@census.gov>
Date: Thu, 17 Apr 2025 23:33:39 -0400
Subject: [PATCH] dynamic version

---
 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 f8a148d..79431b7 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,7 @@ resource "kubernetes_manifest" "example_grafana_datasource" {
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.14.0 |
 | <a name="requirement_helm"></a> [helm](#requirement\_helm) | >= 2.11.0 |
 | <a name="requirement_kubernetes"></a> [kubernetes](#requirement\_kubernetes) | >= 2.23.0 |
+| <a name="requirement_null"></a> [null](#requirement\_null) | >= 3.2.1 |
 
 ## Providers
 
@@ -69,6 +70,7 @@ resource "kubernetes_manifest" "example_grafana_datasource" {
 | <a name="provider_aws"></a> [aws](#provider\_aws) | 5.94.1 |
 | <a name="provider_aws.eecr"></a> [aws.eecr](#provider\_aws.eecr) | 5.94.1 |
 | <a name="provider_helm"></a> [helm](#provider\_helm) | 2.17.0 |
+| <a name="provider_null"></a> [null](#provider\_null) | 3.2.3 |
 | <a name="provider_terraform"></a> [terraform](#provider\_terraform) | n/a |
 
 ## Modules
@@ -84,6 +86,8 @@ resource "kubernetes_manifest" "example_grafana_datasource" {
 | Name | Type |
 |------|------|
 | [helm_release.loki](https://registry.terraform.io/providers/hashicorp/helm/latest/docs/resources/release) | 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.bucket_name_validator](https://registry.terraform.io/providers/hashicorp/terraform/latest/docs/resources/data) | resource |
 | [aws_caller_identity.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/caller_identity) | data source |
 | [aws_ecr_authorization_token.ecr_token](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ecr_authorization_token) | data source |
diff --git a/requirements.tf b/requirements.tf
index ae62e15..32e5c6f 100644
--- a/requirements.tf
+++ b/requirements.tf
@@ -14,5 +14,9 @@ terraform {
       source  = "hashicorp/kubernetes"
       version = ">= 2.23.0"
     }
+    null = {
+      source  = "hashicorp/null"
+      version = ">= 3.2.1"
+    }
   }
 }
diff --git a/version.tf b/version.tf
index 33ac557..ac138e0 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) > ${path.module}/.module_name"
+    on_failure = continue
+  }
+}
+
 locals {
-  module_name    = "tfmod-loki"
-  module_version = "0.1.1"
+  module_name    = fileexists("${path.module}/.module_name") ? trimspace(file("${path.module}/.module_name")) : "tfmod-loki"
+  module_version = fileexists("${path.module}/.git_tag") ? trimspace(file("${path.module}/.git_tag")) : "latest"
 }