Migrate CD from Terraform HCP to GitHub Actions

.github/workflows/terraform-plan.yml

@@ -0,0 +1,42 @@
+name: Create terraform plan
+
+on:
+  pull_request:
+    branches:
+      - main
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  plan:
+    runs-on: ubuntu-latest
+    environment: production
+    name: Create a plan for a terraform configuration (and comment on PR for review)
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # - name: Setup environment variables
+      #   run: |
+      #     echo "$ALLMYVARS"
+      #   shell: bash
+      #   env:
+      #     ALLMYVARS: ${{ toJSON(vars) }}
+
+      - name: terraform plan
+        uses: dflook/terraform-plan@v1
+        env:
+          TF_VAR_aws_secret_key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          TF_VAR_cloudflare_api_token: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          TF_VAR_api_address_domain: ${{ vars.API_ADDRESS_DOMAIN }}
+          TF_VAR_api_address_subdomain: ${{ vars.API_ADDRESS_SUBDOMAIN }}
+          TF_VAR_aws_region: ${{ vars.AWS_REGION }}
+          TF_VAR_aws_access_key: ${{ vars.AWS_ACCESS_KEY_ID }}
+          TF_VAR_domain_cert_arn: ${{ vars.DOMAIN_CERT_ARN }}
+        with:
+          path: terraform
+

terraform/api.tf

@@ -1,5 +1,5 @@
 locals {
-  fqdn = "${var.api_address.subdomain}.${var.api_address.domain}"
+  fqdn = "${var.api_address_subdomain}.${var.api_address_domain}"
 }
 
 module "api_gateway" {

terraform/dns.tf

@@ -4,17 +4,17 @@ provider "cloudflare" {
 
 data "cloudflare_zones" "skyfenton_com" {
   filter {
-    name = var.api_address.domain
+    name = var.api_address_domain
   }
 }
 
 # create a DNS record for the API gateway
 resource "cloudflare_record" "api_gateway_record" {
   zone_id = data.cloudflare_zones.skyfenton_com.zones[0].id
-  name    = var.api_address.subdomain
+  name    = var.api_address_subdomain
   content = module.api_gateway.domain_name_target_domain_name
   type    = "CNAME"
   proxied = true
 
   comment = "CNAME record for the Waller API gateway; Terraform"
-}
+}

terraform/main.tf

@@ -1,7 +1,7 @@
 provider "aws" {
-  shared_config_files      = var.aws_config.shared_config_files
-  shared_credentials_files = var.aws_config.shared_credentials_files
-  profile                  = var.aws_config.profile
+  access_key = var.aws_access_key
+  secret_key = var.aws_secret_key
+  region     = var.aws_region
 
   default_tags {
     tags = {

terraform/variables.tf

@@ -1,26 +1,32 @@
-variable "aws_config" {
-  type = object({
-    shared_config_files      = list(string)
-    shared_credentials_files = list(string)
-    profile                  = string
-  })
+variable "aws_access_key" {
+  type = string
+}
+
+variable "aws_secret_key" {
+  type = string
+}
 
-  default = {
-    shared_config_files      = []
-    shared_credentials_files = []
-    profile                  = "default"
-  }
+variable "aws_region" {
+  type = string
 }
 
 variable "cloudflare_api_token" {
   type = string
 }
 
-variable "api_address" {
-  type = object({
-    subdomain = string
-    domain    = string
-  })
+# variable "api_address" {
+#   type = object({
+#     subdomain = string
+#     domain    = string
+#   })
+# }
+
+variable "api_address_subdomain" {
+  type = string
+}
+
+variable "api_address_domain" {
+  type = string
 }
 
 variable "domain_cert_arn" {