fix: fix null previous image tags being provided to rollback step

.github/workflows/deploy-environment.yaml

@@ -157,6 +157,16 @@ jobs:
         id: init
         run: terraform init -no-color -input=false -upgrade
 
+      - name: Get Current Versions from Terraform State
+        id: get_current_versions
+        run: |
+          terraform output -json > outputs.json || true
+          if [ -s outputs.json ] && [ "$(jq -r 'length' outputs.json)" -gt 0 ]; then
+            jq -r 'to_entries[] | select(.key | startswith("deployed_")) | "\(.key | ltrimstr("deployed_"))=\(.value.value // "")"' outputs.json >> $GITHUB_OUTPUT
+          else
+            echo "No outputs found, could be first run"
+          fi
+
       - name: Select workspace
         if: ${{ inputs.workspace }}
         run: terraform workspace select -or-create ${{ inputs.workspace }}
@@ -277,16 +287,6 @@ jobs:
               })
             }
 
-      - name: Get Current Versions from Terraform State
-        id: get_current_versions
-        run: |
-          terraform output -json > outputs.json
-          echo "api_image_tag=$(jq -r '.api_image_tag.value' outputs.json)" >> $GITHUB_OUTPUT
-          echo "cli_image_tag=$(jq -r '.cli_image_tag.value' outputs.json)" >> $GITHUB_OUTPUT
-          echo "selfserve_image_tag=$(jq -r '.selfserve_image_tag.value' outputs.json)" >> $GITHUB_OUTPUT
-          echo "internal_image_tag=$(jq -r '.internal_image_tag.value' outputs.json)" >> $GITHUB_OUTPUT
-          echo "assets_version=$(jq -r '.assets_version.value' outputs.json)" >> $GITHUB_OUTPUT
-
       - name: Apply
         id: apply
         if: ${{ inputs.apply }}

infra/terraform/environments/dev/main.tf

@@ -506,3 +506,13 @@ module "service" {
     ]
   }
 }
+
+resource "null_resource" "deployed_versions" {
+  triggers = {
+    deployed_api_image_tag       = var.api_image_tag
+    deployed_internal_image_tag  = var.internal_image_tag
+    deployed_selfserve_image_tag = var.selfserve_image_tag
+    deployed_cli_image_tag       = var.cli_image_tag
+    deployed_assets_version      = var.assets_version
+  }
+}

infra/terraform/environments/dev/outputs.tf

@@ -0,0 +1,19 @@
+output "deployed_api_image_tag" {
+  value = null_resource.deployed_versions.triggers["deployed_api_image_tag"]
+}
+
+output "deployed_internal_image_tag" {
+  value = null_resource.deployed_versions.triggers["deployed_internal_image_tag"]
+}
+
+output "deployed_selfserve_image_tag" {
+  value = null_resource.deployed_versions.triggers["deployed_selfserve_image_tag"]
+}
+
+output "deployed_cli_image_tag" {
+  value = null_resource.deployed_versions.triggers["deployed_cli_image_tag"]
+}
+
+output "deployed_assets_version" {
+  value = null_resource.deployed_versions.triggers["deployed_assets_version"]
+}

infra/terraform/environments/dev/provider.tf

@@ -4,6 +4,10 @@ terraform {
       source  = "hashicorp/aws"
       version = ">= 5.72.1"
     }
+    null = {
+      source  = "hashicorp/null"
+      version = "~> 3.2"
+    }
   }
 
   required_version = ">= 1.0"

infra/terraform/environments/int/main.tf

@@ -472,3 +472,13 @@ module "service" {
     ]
   }
 }
+
+resource "null_resource" "deployed_versions" {
+  triggers = {
+    deployed_api_image_tag       = var.api_image_tag
+    deployed_internal_image_tag  = var.internal_image_tag
+    deployed_selfserve_image_tag = var.selfserve_image_tag
+    deployed_cli_image_tag       = var.cli_image_tag
+    deployed_assets_version      = var.assets_version
+  }
+}

infra/terraform/environments/int/outputs.tf

@@ -0,0 +1,19 @@
+output "deployed_api_image_tag" {
+  value = null_resource.deployed_versions.triggers["deployed_api_image_tag"]
+}
+
+output "deployed_internal_image_tag" {
+  value = null_resource.deployed_versions.triggers["deployed_internal_image_tag"]
+}
+
+output "deployed_selfserve_image_tag" {
+  value = null_resource.deployed_versions.triggers["deployed_selfserve_image_tag"]
+}
+
+output "deployed_cli_image_tag" {
+  value = null_resource.deployed_versions.triggers["deployed_cli_image_tag"]
+}
+
+output "deployed_assets_version" {
+  value = null_resource.deployed_versions.triggers["deployed_assets_version"]
+}

infra/terraform/environments/int/provider.tf

@@ -4,6 +4,10 @@ terraform {
       source  = "hashicorp/aws"
       version = ">= 5.72.1"
     }
+    null = {
+      source  = "hashicorp/null"
+      version = "~> 3.2"
+    }
   }
 
   required_version = ">= 1.0"