From 4d03bf99733f1e438ece00ecbbe759bdc2e984dc Mon Sep 17 00:00:00 2001
From: "Matthew C. Morgan" <matthew.c.morgan@census.gov>
Date: Thu, 17 Apr 2025 23:32:08 -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 e0caedb..7aeaa20 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ This modules installs the OpenTelemetry Collector operator and two Collectors. O
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13 |
 | <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_null"></a> [null](#requirement\_null) | >= 3.2.1 |
 
 ## Providers
 
@@ -22,6 +23,7 @@ This modules installs the OpenTelemetry Collector operator and two Collectors. O
 | <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 |
 
 ## Modules
 
@@ -35,6 +37,8 @@ This modules installs the OpenTelemetry Collector operator and two Collectors. O
 |------|------|
 | [helm_release.opentelemetry-operator](https://registry.terraform.io/providers/hashicorp/helm/latest/docs/resources/release) | resource |
 | [helm_release.otel-resources](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 |
 | [aws_ecr_authorization_token.ecr_token](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ecr_authorization_token) | data source |
 | [aws_ecr_authorization_token.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 2e678e4..5cd741d 100644
--- a/requirements.tf
+++ b/requirements.tf
@@ -10,5 +10,9 @@ terraform {
       source  = "hashicorp/helm"
       version = ">= 2.11.0"
     }
+    null = {
+      source  = "hashicorp/null"
+      version = ">= 3.2.1"
+    }
   }
 }
diff --git a/version.tf b/version.tf
index 7f30ac4..665110b 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) > ${path.module}/.module_name"
+    on_failure = continue
+  }
+}
+
 locals {
-  module_name    = "tfmod-open-telemetry"
-  module_version = "0.0.1"
+  module_name    = fileexists("${path.module}/.module_name") ? trimspace(file("${path.module}/.module_name")) : "tfmod-open-telemetry"
+  module_version = fileexists("${path.module}/.git_tag") ? trimspace(file("${path.module}/.git_tag")) : "latest"
 }