Tokyo Drift Detector #3
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| name: Tokyo Drift Detector | |
| on: | |
| workflow_dispatch: | |
| schedule: | |
| - cron: "0 0 * * *" | |
| jobs: | |
| get-tofu-directories: | |
| outputs: | |
| tf-dirs: ${{ steps.get-tf-dirs.outputs.tf-dirs }} | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Checkout repository | |
| uses: actions/checkout@v4 | |
| - name: Get list of directories with Tofu | |
| id: get-tf-dirs | |
| run: | | |
| tfdirsraw=$(find . -type f -name "*.tf" ! -path "*/modules/*" -exec dirname {} \; | sort -u) | |
| echo "List of Tofu directories" | |
| echo $tfdirsraw | |
| # Convert into JSON array | |
| tfdirs=$(echo $tfdirsraw | jq -R -s -c 'split("\n") | map(select(length > 0))' | |
| echo tfdirs=$tfdirs >> $GITHUB_OUTPUT | |
| check-drift: | |
| needs: get-tofu-directories | |
| runs-on: ubuntu-latest | |
| strategy: | |
| matrix: | |
| tf-dirs: ${{fromJson(needs.get-tofu-directories.outputs.tf-dirs)}} | |
| outputs: | |
| tfplan-exitcode: ${{ steps.tf-plan.outputs.exitcode }} | |
| steps: | |
| - name: Checkout repository | |
| uses: actions/checkout@v4 | |
| - name: Setup OpenTofu | |
| uses: opentofu/setup-opentofu@v1 | |
| - name: Set up AWS credentials | |
| uses: aws-actions/configure-aws-credentials@v4 | |
| with: | |
| role-to-assume: ${{ secrets.AWS_GHA_ROLE }} | |
| aws-region: ap-southeast-1 | |
| - name: Check drift in Tofu directories | |
| id: tf-plan | |
| run: | | |
| echo "Running plan in ${{ matrix.tf-dirs }}" | |
| cd ${{ matrix.tf-dirs }} | |
| export exitcode=0 | |
| tofu plan -detailed-exitcode -no-color -out tfplan || export exitcode=$? | |
| echo "exitcode=$exitcode" >> $GITHUB_OUTPUT | |
| if [ $exitcode -eq 1 ]; then | |
| echo Tofu Plan Failed! | |
| exit 1 | |
| else | |
| exit 0 | |
| fi | |
| # Save plan to artifacts | |
| - name: Publish Tofu Plan | |
| uses: actions/upload-artifact@v4 | |
| with: | |
| name: tfplan | |
| path: tfplan | |
| # Create string output of Tofu Plan | |
| - name: Create String Output | |
| id: tf-plan-string | |
| run: | | |
| TOFU_PLAN=$(tofu show -no-color tfplan) | |
| delimiter="$(openssl rand -hex 8)" | |
| echo "summary<<${delimiter}" >> $GITHUB_OUTPUT | |
| echo "## Tofu Plan Output" >> $GITHUB_OUTPUT | |
| echo "<details><summary>Click to expand</summary>" >> $GITHUB_OUTPUT | |
| echo "" >> $GITHUB_OUTPUT | |
| echo '```tofu' >> $GITHUB_OUTPUT | |
| echo "$TOFU_PLAN" >> $GITHUB_OUTPUT | |
| echo '```' >> $GITHUB_OUTPUT | |
| echo "</details>" >> $GITHUB_OUTPUT | |
| echo "${delimiter}" >> $GITHUB_OUTPUT | |
| # Publish Terraform Plan as task summary | |
| - name: Publish Terraform Plan to Task Summary | |
| env: | |
| SUMMARY: ${{ steps.tf-plan-string.outputs.summary }} | |
| run: | | |
| echo "$SUMMARY" >> $GITHUB_STEP_SUMMARY | |
| # If changes are detected, create a new issue | |
| - name: Publish Drift Report | |
| if: steps.tf-plan.outputs.exitcode == 2 | |
| uses: actions/github-script@v7 | |
| env: | |
| SUMMARY: "${{ steps.tf-plan-string.outputs.summary }}" | |
| with: | |
| github-token: ${{ secrets.GITHUB_TOKEN }} | |
| script: | | |
| const body = `${process.env.SUMMARY}`; | |
| const title = 'Terraform Configuration Drift Detected'; | |
| const creator = 'github-actions[bot]' | |
| // Look to see if there is an existing drift issue | |
| const issues = await github.rest.issues.listForRepo({ | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| state: 'open', | |
| creator: creator, | |
| title: title | |
| }) | |
| if( issues.data.length > 0 ) { | |
| // We assume there shouldn't be more than 1 open issue, since we update any issue we find | |
| const issue = issues.data[0] | |
| if ( issue.body == body ) { | |
| console.log('Drift Detected: Found matching issue with duplicate content') | |
| } else { | |
| console.log('Drift Detected: Found matching issue, updating body') | |
| github.rest.issues.update({ | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| issue_number: issue.number, | |
| body: body | |
| }) | |
| } | |
| } else { | |
| console.log('Drift Detected: Creating new issue') | |
| github.rest.issues.create({ | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| title: title, | |
| body: body | |
| }) | |
| } | |
| # If changes aren't detected, close any open drift issues | |
| - name: Publish Drift Report | |
| if: steps.tf-plan.outputs.exitcode == 0 | |
| uses: actions/github-script@v7 | |
| with: | |
| github-token: ${{ secrets.GITHUB_TOKEN }} | |
| script: | | |
| const title = 'Terraform Configuration Drift Detected'; | |
| const creator = 'github-actions[bot]' | |
| // Look to see if there is an existing drift issue | |
| const issues = await github.rest.issues.listForRepo({ | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| state: 'open', | |
| creator: creator, | |
| title: title | |
| }) | |
| if( issues.data.length > 0 ) { | |
| const issue = issues.data[0] | |
| github.rest.issues.update({ | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| issue_number: issue.number, | |
| state: 'closed' | |
| }) | |
| } | |
| # Mark the workflow as failed if drift detected | |
| - name: Error on Failure | |
| if: steps.tf-plan.outputs.exitcode == 2 | |
| run: exit 1 |