constellation/.github/actions/terraform_apply/action.yml

name: Terraform provider apply
description: "Create/Apply a Constellation cluster using the Terraform provider."

inputs:
  cloudProvider:
    description: "The cloud provider the test runs on."
    required: true

runs:
  using: "composite"
  steps:
    - name: Create Terraform file
      shell: bash
      run: |
        attestationVariant=""
        case "$(yq '.attestation | keys | .[0]' constellation-conf.yaml)" in
          "awsSEVSNP")
            attestationVariant="aws-sev-snp"
            ;;
          "azureSEVSNP")
            attestationVariant="azure-sev-snp"
            ;;
          "azureTDX")
            attestationVariant="azure-tdx"
            ;;
          "gcpSEVES")
            attestationVariant="gcp-sev-es"
            ;;
          # TODO(msanft): Enable once stable GCP SEV-SNP images exist.
          # "gcpSEVSNP")
          #  attestationVariant="gcp-sev-snp"
          #  ;;
          *)
            echo "Unknown attestation variant: $(yq '.attestation | keys | .[0]' constellation-conf.yaml)"
            exit 1
            ;;
        esac

        cat << EOF > main.tf
        terraform {
          required_providers {
            constellation = {
              source  = "edgelesssys/constellation"
              version = "$(yq '.microserviceVersion' constellation-conf.yaml | sed 's/^v//')"
            }
            random = {
              source  = "hashicorp/random"
              version = "3.6.0"
            }
          }
        }

        resource "random_bytes" "master_secret" {
          length = 32
        }

        resource "random_bytes" "master_secret_salt" {
          length = 32
        }

        resource "random_bytes" "measurement_salt" {
          length = 32
        }

        data "constellation_attestation" "con_attestation" {
          csp                 = "${{ inputs.cloudProvider }}"
          attestation_variant = "${attestationVariant}"
          image               = data.constellation_image.con_image.image
          maa_url             = "$(yq '.infrastructure.azure.attestationURL' constellation-state.yaml)"
          insecure            = true
        }

        data "constellation_image" "con_image" {
          version             = "$(yq '.image' constellation-conf.yaml)"
          attestation_variant = "${attestationVariant}"
          csp                 = "${{ inputs.cloudProvider }}"
          region              = "$(yq '.provider.aws.region' constellation-conf.yaml)"
        }

        resource "constellation_cluster" "cluster" {
          csp                                = "${{ inputs.cloudProvider }}"
          constellation_microservice_version = "$(yq '.microserviceVersion' constellation-conf.yaml)"
          name                               = "$(yq '.name' constellation-conf.yaml)"
          uid                                = "$(yq '.infrastructure.uid' constellation-state.yaml)"
          image                              = data.constellation_image.con_image.image
          attestation                        = data.constellation_attestation.con_attestation.attestation
          init_secret                        = "$(yq '.infrastructure.initSecret' constellation-state.yaml | xxd -r -p)"
          master_secret                      = random_bytes.master_secret.hex
          master_secret_salt                 = random_bytes.master_secret_salt.hex
          measurement_salt                   = random_bytes.measurement_salt.hex
          out_of_cluster_endpoint            = "$(yq '.infrastructure.clusterEndpoint' constellation-state.yaml)"
          in_cluster_endpoint                = "$(yq '.infrastructure.inClusterEndpoint' constellation-state.yaml)"
          kubernetes_version                 = "$(yq '.kubernetesVersion' constellation-conf.yaml)"
          azure = {
            count = "$(yq '.provider | keys | .[0]' constellation-conf.yaml)" == "azure" ? 1 : 0
            tenant_id                   = "$(yq '.provider.azure.tenant' constellation-conf.yaml)"
            subscription_id             = "$(yq '.infrastructure.azure.subscriptionID' constellation-state.yaml)"
            uami_client_id              = "$(yq '.infrastructure.azure.userAssignedIdentity' constellation-state.yaml)"
            uami_resource_id            = "$(yq '.provider.azure.userAssignedIdentity' constellation-conf.yaml)"
            location                    = "$(yq '.provider.azure.location' constellation-conf.yaml)"
            resource_group              = "$(yq '.infrastructure.azure.resourceGroup' constellation-state.yaml)"
            load_balancer_name          = "$(yq '.infrastructure.azure.loadBalancerName' constellation-state.yaml)"
            network_security_group_name = "$(yq '.infrastructure.azure.networkSecurityGroupName' constellation-state.yaml)"
          }
          gcp = {
            count = "$(yq '.provider | keys | .[0]' constellation-conf.yaml)" == "gcp" ? 1 : 0
            project_id          = "$(yq '.infrastructure.gcp.projectID' constellation-state.yaml)"
            service_account_key = sensitive("$(cat $(yq '.provider.gcp.serviceAccountKeyPath' constellation-conf.yaml) | base64 -w0)")
          }
          network_config = {
            ip_cidr_node    = "$(yq '.infrastructure.ipCidrNode' constellation-state.yaml)"
            ip_cidr_service = "$(yq '.serviceCIDR' constellation-conf.yaml)"
            ip_cidr_pod     = "$(yq '.infrastructure.gcp.ipCidrPod' constellation-state.yaml)" # This is null for everything but GCP
          }
        }

        output "master_secret" {
          value = random_bytes.master_secret.base64
          sensitive = true
        }

        output "master_secret_salt" {
          value = random_bytes.master_secret_salt.base64
          sensitive = true
        }

        output "measurement_salt" {
          value = random_bytes.measurement_salt.hex
          sensitive = true
        }

        output "cluster_id" {
          value = constellation_cluster.cluster.cluster_id
        }

        output "owner_id" {
          value = constellation_cluster.cluster.owner_id
        }

        output "kubeconfig" {
          value = constellation_cluster.cluster.kubeconfig
          sensitive = true
        }
        EOF        

    - name: Apply Terraform configuration
      shell: bash
      run: |
        terraform init
        terraform apply -auto-approve        

    - name: Write output
      shell: bash
      run: |
        terraform output -raw kubeconfig > "$(pwd)/constellation-admin.conf"
        yq -i ".clusterValues.measurementSalt = $(terraform output measurement_salt)" constellation-state.yaml
        yq -i ".clusterValues.clusterID = $(terraform output cluster_id)" constellation-state.yaml
        yq -i ".clusterValues.ownerID = $(terraform output owner_id)" constellation-state.yaml
        cat << EOF > constellation-mastersecret.json
        {
          "key": "$(terraform output -raw master_secret)",
          "salt": "$(terraform output -raw master_secret_salt)"
        }
        EOF