Cost Monitoring #9
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| name: Cost Monitoring | |
| on: | |
| schedule: | |
| # Run daily at 08:00 UTC | |
| - cron: '0 8 * * *' | |
| workflow_dispatch: | |
| jobs: | |
| cost-report: | |
| name: Generate Cost Report | |
| runs-on: ubuntu-latest | |
| permissions: | |
| actions: read | |
| issues: write | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - name: Fetch GitHub Actions usage | |
| id: usage | |
| env: | |
| GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| run: | | |
| # Billing API — available on paid plans; returns 0 on free plans | |
| RESPONSE=$(gh api /repos/${{ github.repository }}/actions/billing/usage 2>/dev/null || echo '{}') | |
| MINUTES_USED=$(echo "$RESPONSE" | jq -r '.total_minutes_used // 0') | |
| MINUTES_LIMIT=$(echo "$RESPONSE" | jq -r '.included_minutes // 2000') | |
| PAID_MINUTES=$(echo "$RESPONSE" | jq -r '.total_paid_minutes_used // 0') | |
| echo "minutes_used=$MINUTES_USED" >> "$GITHUB_OUTPUT" | |
| echo "minutes_limit=$MINUTES_LIMIT" >> "$GITHUB_OUTPUT" | |
| echo "paid_minutes=$PAID_MINUTES" >> "$GITHUB_OUTPUT" | |
| - name: Calculate costs | |
| id: costs | |
| run: | | |
| MINUTES_USED=${{ steps.usage.outputs.minutes_used }} | |
| MINUTES_LIMIT=${{ steps.usage.outputs.minutes_limit }} | |
| PAID_MINUTES=${{ steps.usage.outputs.paid_minutes }} | |
| # CI cost: $0.008/min for Linux overage | |
| CI_COST=$(python3 -c "print(round($PAID_MINUTES * 0.008, 2))") | |
| # Usage percentage | |
| if [ "$MINUTES_LIMIT" -gt 0 ]; then | |
| PCT=$(python3 -c "print(round($MINUTES_USED / $MINUTES_LIMIT * 100, 1))") | |
| else | |
| PCT=0 | |
| fi | |
| echo "ci_cost=$CI_COST" >> "$GITHUB_OUTPUT" | |
| echo "usage_pct=$PCT" >> "$GITHUB_OUTPUT" | |
| - name: Run cost optimization check | |
| run: | | |
| chmod +x scripts/cost_optimization.sh | |
| scripts/cost_optimization.sh | |
| - name: Post cost summary as issue comment (weekly) | |
| if: github.event_name == 'schedule' | |
| env: | |
| GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| run: | | |
| DAY=$(date +%u) # 1=Mon … 7=Sun | |
| [ "$DAY" != "1" ] && exit 0 # only post on Mondays | |
| MINUTES_USED=${{ steps.usage.outputs.minutes_used }} | |
| MINUTES_LIMIT=${{ steps.usage.outputs.minutes_limit }} | |
| CI_COST=${{ steps.costs.outputs.ci_cost }} | |
| PCT=${{ steps.costs.outputs.usage_pct }} | |
| BODY="## 📊 Weekly Cost Report — $(date +%Y-%m-%d) | |
| | Metric | Value | | |
| |--------|-------| | |
| | CI minutes used | ${MINUTES_USED} / ${MINUTES_LIMIT} (${PCT}%) | | |
| | CI overage cost | \$${CI_COST} | | |
| > Full details: [Cost Monitoring dashboard](http://localhost:3000/d/stellar-save-costs) | |
| > Optimization tips: run \`scripts/cost_optimization.sh\`" | |
| gh issue create \ | |
| --title "Weekly Cost Report $(date +%Y-%m-%d)" \ | |
| --body "$BODY" \ | |
| --label "cost-monitoring" \ | |
| || true # don't fail if label doesn't exist | |
| - name: Fail if CI minutes > 90% of limit | |
| run: | | |
| PCT=${{ steps.costs.outputs.usage_pct }} | |
| python3 -c " | |
| pct = float('$PCT') | |
| if pct >= 90: | |
| print(f'::warning::CI minutes at {pct}% of monthly limit — overage charges imminent') | |
| if pct >= 100: | |
| print(f'::error::CI minutes limit exceeded — overage charges active') | |
| exit(1) | |
| print(f'CI minutes usage: {pct}% — OK') | |
| " |