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| name: "Terraform Infrastructure Change Management Pipeline with GitHub Actions" | |
| on: | |
| push: | |
| branches: | |
| - main | |
| - prod | |
| pull_request: | |
| branches: | |
| - main | |
| - prod | |
| env: | |
| # verbosity setting for Terraform logs | |
| TF_LOG: INFO | |
| # environment | |
| IS_PROD: ${{ ((github.ref_name == 'prod') || (github.base_ref == 'prod')) }} | |
| # Terraform workspace is prod when pushing or merging to prod branch, otherwise dev | |
| TF_WORKSPACE: ${{ ((github.ref_name == 'prod') || (github.base_ref == 'prod')) && 'prod' || 'dev' }} | |
| TF_VAR_harbor_username: ${{ secrets.HARBOR_USER }} | |
| TF_VAR_harbor_password: ${{ secrets.HARBOR_PASSWORD }} | |
| AWS_REGION: eu-west-1 | |
| jobs: | |
| terraform: | |
| name: "Terraform Infrastructure Change Management" | |
| runs-on: ubuntu-latest | |
| environment: ${{ ((github.ref_name == 'prod') || (github.base_ref == 'prod')) && 'prod' || 'dev' }} | |
| defaults: | |
| run: | |
| shell: bash | |
| # We keep Terraform files in the terraform directory. | |
| working-directory: ./infra | |
| permissions: | |
| issues: write | |
| pull-requests: write | |
| contents: read | |
| id-token: write | |
| steps: | |
| - name: Checkout the repository to the runner | |
| uses: actions/checkout@v2 | |
| - name: Configure AWS credentials from Test account | |
| uses: aws-actions/configure-aws-credentials@v4 | |
| with: | |
| role-to-assume: arn:aws:iam::654654181948:role/github-actions-terraform-role | |
| aws-region: ${{ env.AWS_REGION }} | |
| - name: Setup Terraform with specified version on the runner | |
| uses: hashicorp/setup-terraform@v2 | |
| with: | |
| terraform_version: 1.5.7 | |
| - name: Terraform init | |
| id: init | |
| run: | | |
| terraform init | |
| - name: Terraform format | |
| id: fmt | |
| run: terraform fmt -check | |
| - name: Terraform validate | |
| id: validate | |
| run: terraform validate | |
| - name: Terraform plan | |
| id: plan | |
| if: github.event_name == 'pull_request' | |
| run: terraform plan -no-color -input=false | |
| continue-on-error: true | |
| - uses: actions/github-script@v6 | |
| if: github.event_name == 'pull_request' | |
| env: | |
| PLAN: "terraform\n${{ steps.plan.outputs.stdout }}" | |
| with: | |
| script: | | |
| // 1. Retrieve existing bot comments for the PR | |
| const { data: comments } = await github.rest.issues.listComments({ | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| issue_number: context.issue.number, | |
| }) | |
| const botComment = comments.find(comment => { | |
| return comment.user.type === 'Bot' && comment.body.includes('Terraform Format and Style') | |
| }) | |
| // 2. Prepare format of the comment | |
| const output = `#### Terraform Format and Style 🖌\`${{ steps.fmt.outcome }}\` | |
| #### Terraform Initialization ⚙️\`${{ steps.init.outcome }}\` | |
| #### Terraform Validation 🤖\`${{ steps.validate.outcome }}\` | |
| <details><summary>Validation Output</summary> | |
| \`\`\`\n | |
| ${{ steps.validate.outputs.stdout }} | |
| \`\`\` | |
| </details> | |
| #### Terraform Plan 📖\`${{ steps.plan.outcome }}\` | |
| <details><summary>Show Plan</summary> | |
| \`\`\`\n | |
| ${process.env.PLAN} | |
| \`\`\` | |
| </details> | |
| *Pusher: @${{ github.actor }}, Action: \`${{ github.event_name }}\`, Working Directory: \`./infra\`, Workflow: \`${{ github.workflow }}\`*`; | |
| // 3. If we have a comment, update it, otherwise create a new one | |
| if (botComment) { | |
| github.rest.issues.updateComment({ | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| comment_id: botComment.id, | |
| body: output | |
| }) | |
| } else { | |
| github.rest.issues.createComment({ | |
| issue_number: context.issue.number, | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| body: output | |
| }) | |
| } | |
| - name: Terraform Plan Status | |
| if: steps.plan.outcome == 'failure' | |
| run: exit 1 | |
| - name: Terraform Apply | |
| if: github.event_name == 'push' | |
| run: terraform apply -auto-approve -input=false |