cloudbeat/.github/workflows/binary-size-monitor.yml at main · elastic/cloudbeat · GitHub

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name: Binary Size Monitor

on:
  pull_request:
    branches:
      - main
      - "[0-9]+.[0-9]+"
    types: [opened, synchronize, reopened]

env:
  # Binary size threshold in MiB
  SIZE_THRESHOLD_MIB: 5

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true

jobs:
  binary-size-monitor:
    name: Monitor Binary Size
    runs-on: ubuntu-latest
    timeout-minutes: 30
    permissions:
      contents: read
      pull-requests: write

    steps:
      - name: Check out PR
        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5

      - name: Hermit Environment
        uses: ./.github/actions/hermit
        with:
          init-tools: "true"
          free-disk: "true"

      - name: Build PR branch binary
        run: |
          mage build
          mv cloudbeat /tmp/cloudbeat-pr

      - name: Check out target branch
        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
        with:
          ref: ${{ github.base_ref }}
          clean: true

      - name: Build target branch binary
        run: |
          echo "Building target branch binary..."
          mage build
          mv cloudbeat /tmp/cloudbeat-target

      # Checkout PR branch to get latest script
      - name: Check out PR (again)
        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5

      - name: Get binary sizes and compare
        id: size-check
        run: |
          ./.ci/scripts/binary-size-compare.sh /tmp/cloudbeat-pr /tmp/cloudbeat-target ${{ env.SIZE_THRESHOLD_MIB }}

      - name: Comment on PR with size information
        if: steps.size-check.outputs.threshold_exceeded == '1'
        uses: marocchino/sticky-pull-request-comment@773744901bac0e8cbb5a0dc842800d45e9b2b405 # v2
        with:
          header: Binary Size Monitor
          message: |
            ## 📊 Binary Size Monitor Report

            | Branch | Size (MiB) | Size (bytes) |
            |--------|-------------|-------------|
            | **PR Branch** | ${{ steps.size-check.outputs.pr_size_mib }} MiB | ${{ steps.size-check.outputs.pr_size }} bytes |
            | **Target Branch** | ${{ steps.size-check.outputs.target_size_mib }} MiB | ${{ steps.size-check.outputs.target_size }} bytes |
            | **Difference** | ${{ steps.size-check.outputs.size_diff_mib }} MiB | ${{ steps.size-check.outputs.size_diff }} bytes |

            **Size Change:** ${{ steps.size-check.outputs.percentage }}% | **Absolute Change:** ${{ steps.size-check.outputs.size_diff_mib }} MiB

            ${{ steps.size-check.outputs.threshold_exceeded == '1' && format('⚠️ **WARNING:** Binary size increased by {0} MiB, which exceeds the {1} MiB threshold!', steps.size-check.outputs.size_diff_mib, env.SIZE_THRESHOLD_MIB) || '✅ Binary size change is within acceptable limits.' }}

      - name: Delete previous comment if it exists
        uses: marocchino/sticky-pull-request-comment@773744901bac0e8cbb5a0dc842800d45e9b2b405 # v2
        if: steps.size-check.outputs.threshold_exceeded == '0'
        with:
          header: Binary Size Monitor
          delete: true

      - name: Fail job if size threshold exceeded
        if: steps.size-check.outputs.threshold_exceeded == '1'
        run: |
          echo "❌ Binary size increased by ${{ steps.size-check.outputs.size_diff_mib }} MiB (${{ steps.size-check.outputs.percentage }}%), exceeding the ${{ env.SIZE_THRESHOLD_MIB }} MiB threshold"
          echo "This indicates a significant increase in the cloudbeat binary size."
          echo "Please review your changes to understand the size impact."
          exit 1