Add CI/CD updates

.github/workflows/terraform-deploy.yml

@@ -0,0 +1,104 @@
+name: Terraform CI/CD
+
+on:
+  pull_request:
+    branches: [deploy]
+  push:
+    branches: [deploy]
+
+permissions:
+  id-token: write
+  contents: write
+  pull-requests: write
+
+env:
+  TF_VAR_application_name: ${{ vars.APPLICATION_NAME }}
+  TF_VAR_application_oauth_client_id: ${{ secrets.APPLICATION_OAUTH_CLIENT_ID }}
+  TF_VAR_application_oauth_client_secret: ${{ secrets.APPLICATION_OAUTH_CLIENT_SECRET }}
+  TF_VAR_location: ${{ vars.AZURE_LOCATION }}
+  TF_VAR_execution_mode: ci
+  ACR_NAME: ${{ vars.ACR_NAME }}
+
+jobs:
+  terraform:
+    runs-on: ubuntu-latest
+
+    steps:
+      # Checkout repo
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Install Terraform
+      - name: Setup Terraform
+        uses: hashicorp/setup-terraform@v2
+        with:
+          terraform_version: 1.10.5
+
+      # Temporarily remove repo provider configuration
+      - name: Disable repo azurerm provider
+        working-directory: terraform/azure
+        run: mv providers.tf providers.tf.bak
+
+      # Create CI-only backend + OIDC provider
+      - name: Create CI Azure backend/provider
+        working-directory: terraform/azure
+        run: |
+          cat <<EOF > azure_ci.tf
+          terraform {
+            backend "azurerm" {}
+          }
+
+          provider "azurerm" {
+            features {}
+          }
+          EOF
+
+      - name: Configure Azure OIDC environment
+        run: |
+          echo "ARM_USE_OIDC=true" >> $GITHUB_ENV
+          echo "ARM_CLIENT_ID=${{ secrets.AZURE_CLIENT_ID }}" >> $GITHUB_ENV
+          echo "ARM_TENANT_ID=${{ secrets.AZURE_TENANT_ID }}" >> $GITHUB_ENV
+          echo "ARM_SUBSCRIPTION_ID=${{ secrets.AZURE_SUBSCRIPTION_ID }}" >> $GITHUB_ENV
+
+      - name: Azure Login
+        uses: azure/login@v1
+        with:
+          client-id: ${{ secrets.AZURE_CLIENT_ID }}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+
+      - name: Login to ACR
+        run: |
+          TOKEN=$(az acr login --name ${{ env.ACR_NAME }} --expose-token --output tsv --query accessToken)
+          docker login -u 00000000-0000-0000-0000-000000000000 --password-stdin ${{ env.ACR_NAME }}.azurecr.io <<< $TOKEN
+
+      - name: Terraform Init
+        working-directory: terraform/azure
+        run: |
+          terraform init -upgrade -reconfigure\
+            -backend-config="resource_group_name=${{ vars.AZURE_RG }}" \
+            -backend-config="storage_account_name=${{ vars.AZURE_STORAGE_ACCOUNT }}" \
+            -backend-config="container_name=${{ vars.AZURE_CONTAINER }}" \
+            -backend-config="key=${{ vars.AZURE_TFSTATE_KEY }}" \
+            -backend-config="use_oidc=true"
+
+      # Terraform plan (PR only)
+      - name: Terraform Plan
+        if: github.event_name == 'pull_request'
+        working-directory: terraform/azure
+        run: terraform plan -out=tfplan
+
+      # Terraform apply (merge to main only)
+      - name: Terraform Apply
+        if: github.event_name == 'push'
+        working-directory: terraform/azure
+        run: |
+          terraform plan -out=tfplan
+          terraform apply -auto-approve tfplan
+
+      # Cleanup CI-only files
+      - name: Cleanup CI Terraform files
+        working-directory: terraform/azure
+        run: |
+          rm -f azure_ci.tf
+          mv providers.tf.bak providers.tf 

terraform/azure/main.tf

@@ -61,6 +61,7 @@ module "manifest" {
     "${basename(dirname(var.manifest_files_paths[count.index]))}.${basename(var.manifest_files_paths[count.index])}"
   ])
 
+  execution_mode = var.execution_mode
   client_id     = local.application_oauth_client_id
   client_secret = local.application_oauth_client_secret
   base_url      = local.application_service_url

terraform/azure/variables.tf

@@ -274,3 +274,9 @@ variable "tags" {
   description = "A map of the tags to apply to various resources"
   default     = {}
 }
+
+variable "execution_mode" {
+  description = "Execution mode: 'local' or 'ci'"
+  type        = string
+  default     = "local"
+}

terraform/common/modules/template/main.tf

@@ -25,11 +25,15 @@ locals {
       ]...
     )
   ])
-
-  output_file_path = nonsensitive(local_sensitive_file.this.filename != "/dev/null" ? local_sensitive_file.this.filename : "")
 }
 
 resource "local_sensitive_file" "this" {
+  count    = var.execution_mode == "local" ? 1 : 0
   content  = local.output_file_content
   filename = local.enabled ? var.output_file_path : "/dev/null"
 }
+
+output "manifest_file_path" {
+  description = "The intended output file path"
+  value       = var.output_file_path
+}

terraform/common/modules/template/outputs.tf

@@ -1,4 +1,4 @@
 output "output_file_path" {
   description = "The absolute path to the output file"
-  value       = local.output_file_path
+  value       = var.output_file_path
 }

terraform/common/modules/template/variables.tf

@@ -1,3 +1,14 @@
+variable "execution_mode" {
+  description = "Controls whether Terraform writes manifests to disk (local) or only renders them (ci)"
+  type        = string
+  default     = "local"
+
+  validation {
+    condition     = contains(["local", "ci"], var.execution_mode)
+    error_message = "execution_mode must be 'local' or 'ci'."
+  }
+}
+
 variable "input_file_path" {
   description = "The absolute path to the input file. If it doesn't exist, the module will not do anything"
   type        = string