orb.yml

version: 2.1
description: Terraform Orb

# Orb Dependencies
#orbs:
#  gcloud: circleci/gcp-cli@1.0.6

executors:
  default:
    docker:
      - image: hashicorp/terraform:light

commands:
  create-keyfile:
    description: "Persists Google credentials as a file"
    steps:
      - run: |
          echo "$<<parameters.var>>" > <<parameters.file>>
    parameters:
      file:
        description: "File full path to persist the credentials"
        type: string
        default: ./secrets/service-account.json
      var:
        description: "Environment variable to retrieve the credentials from"
        type: env_var_name
        default: GOOGLE_CREDENTIALS
  install:
    description: "Installs terraform cli"
    steps:
      - run: |
          wget "https://releases.hashicorp.com/terraform/<<parameters.version>>/terraform_<<parameters.version>>_linux_amd64.zip" && \
          unzip terraform_*_linux_amd64.zip && \
          sudo mv terraform /usr/local/bin/
          rm terraform_*_linux_amd64.zip
    parameters:
      version:
        description: "Version of terraform cli to be installed"
        type: string
        default: "0.12.24"
  multi-project-terraform:
    description: "Applies terraform command to multiple projects"
    steps:
      - run:
          name: "multi project terraform <<parameters.command>>"
          command: |
            _pwd=$(pwd)
            (
              for project_path in <<parameters.path>>/*
              do
                echo "###############################################"
                echo "###### project: $project_path"
                echo "###############################################"
                echo ""
                cd "${_pwd}/${project_path}" || exit
                terraform <<parameters.command>> || exit
              done
            )
    parameters:
      command:
        description: "Terraform command to be executed on all projects"
        type: string
      path:
        description: "path to the projects folder"
        type: string
        default: projects

jobs:
  validate:
    description: "Execute terraform validate"
    executor: default
    steps:
      - checkout
      - create-keyfile
      - run:
          name: Print Terraform version
          command: |
            terraform --version
      - multi-project-terraform:
          command: init
      - multi-project-terraform:
          command: validate

  check:
    description: "Execute terraform plan and fail if state changed"
    executor: default
    parameters:
      cluster:
        description: "The Kubernetes cluster name."
        type: string
    steps:
      - checkout
      - create-keyfile
      - run:
          name: Print Terraform version
          command: |
            terraform --version
      - multi-project-terraform:
          command: init
      - multi-project-terraform:
          command: plan -detailed-exitcode

example:
  plan-apply:
    description: |
      "The simplest example of using this Orb. Checks out the code
      performs a terraform validate and plan."
    usage:
      version: 2.1
      orbs:
        tf: titel-media/terraform@dev:testing-3
      workflows:
        main:
          jobs:
            - tf/validate