ci-check-bundle-size.yml

name: Check Binaries binary size

on:
  push:
    branches: [main]

  pull_request:
    branches: [main]

concurrency:
  group: ${{ github.workflow }}-${{ (github.event.pull_request && github.event.pull_request.number) || github.ref || github.run_id }}
  cancel-in-progress: true

# See https://github.com/ossf/scorecard/blob/main/docs/checks.md#token-permissions
permissions:
  contents: read

jobs:
  build-and-check:
    runs-on: ubuntu-latest
    steps:
    - uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
      with:
        egress-policy: audit 

    - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
      with:
        submodules: true

    - name: Fetch git tags
      run: |
        git fetch --prune --unshallow --tags

    - uses: actions/setup-go@3041bf56c941b39c61721a86cd11f3bb1338122a # v5.2.0
      with:
        go-version: 1.23.x

    - name: Setup Node.js version
      uses: ./.github/actions/setup-node.js

    - name: Build jaeger binary
      run: make build-jaeger

    - name: Calculate jaeger binary size
      run: |
        TOTAL_SIZE=$(du -sb ./cmd/jaeger/jaeger-linux-amd64 | cut -f1)
        echo "$TOTAL_SIZE" > ./new_jaeger_binary_size.txt
        echo "Total binary size: $TOTAL_SIZE bytes"
        
    - name: Restore previous binary size
      id: cache-binary-size
      uses: actions/cache/restore@1bd1e32a3bdc45362d1e726936510720a7c30a57      #v4.2.0
      with:
        path: ./jaeger_binary_size.txt
        key: jaeger_binary_size
        restore-keys: |
          jaeger_binary_size

    - name: Compare jaeger binary sizes
      if: steps.cache-binary-size.outputs.cache-hit == 'true'
      run: |
        OLD_BINARY_SIZE=$(cat ./jaeger_binary_size.txt)
        NEW_BINARY_SIZE=$(cat ./new_jaeger_binary_size.txt)
        echo "Previous binary size: $OLD_BINARY_SIZE bytes"
        echo "New binary size: $NEW_BINARY_SIZE bytes"
        
        SIZE_CHANGE=$(( $NEW_BINARY_SIZE - $OLD_BINARY_SIZE ))
        PERCENTAGE_CHANGE=$(( SIZE_CHANGE * 100 / $OLD_BINARY_SIZE ))
        echo "Size change: $PERCENTAGE_CHANGE%"
        if [ $PERCENTAGE_CHANGE -gt 2 ]; then
          echo "❌ binary size increased by more than 2% ($PERCENTAGE_CHANGE%)"
          exit 1
        else
          echo "✅ binary size change is within acceptable range ($PERCENTAGE_CHANGE%)"
        fi
 

    - name: Remove previous *_binary_*.txt
      run: |
        rm -rf ./jaeger_binary_size.txt
        mv ./new_jaeger_binary_size.txt ./jaeger_binary_size.txt
      
    - name: Save new jaeger binary size
      if: ${{ (github.event_name == 'push') && (github.ref == 'refs/heads/main') }}
      uses: actions/cache/save@1bd1e32a3bdc45362d1e726936510720a7c30a57     #v4.2.0
      with:
        path: ./jaeger_binary_size.txt
        key: jaeger_binary_${{ github.run_id }}