codefresh.yml

version: '1.0'
stages:
  - checkout
  - prepare
  - plan
  - deploy
  - destroy
steps:
  main_clone:
    title: Cloning main repository...
    stage: checkout
    type: git-clone
    repo: 'sandrogattuso/terraform-sample-app'
    revision: master
    git: github
  Setup:
    image: 'google/cloud-sdk'
    title: Setting up Google cloud auth and Variables
    stage: prepare
    shell: bash
    commands:
      - STACK_ARRAY=($STACKS)
      - echo "$ACCOUNT_JSON_CONTENT" | base64 -d > /codefresh/volume/account.json
      - cf_export GOOGLE_CLOUD_KEYFILE_JSON=/codefresh/volume/account.json
      - cf_export GOOGLE_APPLICATION_CREDENTIALS=/codefresh/volume/account.json
      - echo gcp_project = \"$GCLOUD_PROJECT\" > vars.auto.tfvars
      - gcloud auth activate-service-account --key-file=/codefresh/volume/account.json
      - gsutil cp "gs://$STORAGE_BUCKET/codefresh/$STACK_FILE" $STACK_FILE || echo "0" > $STACK_FILE
      - export CURRENT_STACK=$(cat $STACK_FILE)
      - export OLD_STACK="$(( ($CURRENT_STACK+1) %2 ))"
      - export CURRENT_STACK_NAME="${STACK_ARRAY[$CURRENT_STACK]}"
      - cf_export CURRENT_STACK OLD_STACK CURRENT_STACK_NAME
  TerraformPlan:
    image: hashicorp/terraform:0.12.0
    title: Terraform plan
    stage: plan
    commands:
      - echo 'yes' | terraform init -force-copy -backend-config="bucket=$STORAGE_BUCKET"
      - terraform workspace select $CURRENT_STACK_NAME || terraform workspace new $CURRENT_STACK_NAME
      - export BLUE_GREEN=false
      - terraform plan -detailed-exitcode || if [[ $? == 2 ]]; then export BLUE_GREEN=true; export OLD_STACK=$CURRENT_STACK; export CURRENT_STACK=$(( ($CURRENT_STACK+1) %2 )); else echo "Error excuting plan"; exit 1; fi
      - cf_export BLUE_GREEN OLD_STACK CURRENT_STACK
  SetCurrentStackName:
    image: 'google/cloud-sdk'
    title: Setting Stack Name
    stage: plan
    shell: bash
    commands:
      - export STACK_ARRAY=($STACKS)
      - export OLD_STACK_NAME="${STACK_ARRAY[$OLD_STACK]}"
      - export CURRENT_STACK_NAME="${STACK_ARRAY[$CURRENT_STACK]}"
      - cf_export OLD_STACK_NAME CURRENT_STACK_NAME
  TerraformApply:
    image: hashicorp/terraform:0.12.0
    title: Terraform apply
    stage: deploy
    commands:
      - terraform workspace select $CURRENT_STACK_NAME || terraform workspace new $CURRENT_STACK_NAME
      - terraform apply -auto-approve 
  UpdateLiveStack:
    image: 'google/cloud-sdk'
    title: Update Live stack information
    stage: deploy
    commands:
      - echo "$CURRENT_STACK" > $STACK_FILE
      - gcloud auth activate-service-account --key-file=/codefresh/volume/account.json
      - gsutil cp $STACK_FILE "gs://$STORAGE_BUCKET/codefresh/$STACK_FILE"
  TerraformDestroy:
    image: hashicorp/terraform:0.12.0
    title: Terraform destroy
    stage: destroy
    commands:
      - terraform workspace select $OLD_STACK_NAME || terraform workspace new $OLD_STACK_NAME
      - terraform destroy -auto-approve
    when:
      condition:
        all:
          executedBlueGreen: '${{BLUE_GREEN}}'