# this name is used in report-backend-memory.yml so be careful when change name
name: Get backend memory usage

on:
  pull_request:
    branches:
      - master
      - develop
    paths:
      - packages/backend/**
      - packages/misskey-js/**
      - .github/scripts/utility.mts
      - .github/scripts/backend-memory-report.mts
      - .github/scripts/measure-backend-memory-comparison.mts
      - .github/scripts/backend-js-footprint.mjs
      - .github/scripts/backend-js-footprint-loader.mjs
      - .github/scripts/backend-js-footprint-require.cjs
      - .github/workflows/get-backend-memory.yml
      - .github/workflows/report-backend-memory.yml

jobs:
  get-memory-usage:
    runs-on: ubuntu-latest
    permissions:
      contents: read

    services:
      postgres:
        image: postgres:18
        ports:
          - 54312:5432
        env:
          POSTGRES_DB: test-misskey
          POSTGRES_HOST_AUTH_METHOD: trust
      redis:
        image: redis:8
        ports:
          - 56312:6379

    steps:
    - name: Checkout base
      uses: actions/checkout@v6.0.2
      with:
        ref: ${{ github.base_ref }}
        path: base
        submodules: true
    - name: Checkout head
      uses: actions/checkout@v6.0.2
      with:
        ref: refs/pull/${{ github.event.number }}/merge
        path: head
        submodules: true
    - name: Setup pnpm
      uses: pnpm/action-setup@v6.0.3
      with:
        package_json_file: head/package.json
    - name: Use Node.js
      uses: actions/setup-node@v6.4.0
      with:
        node-version-file: 'head/.node-version'
        cache: 'pnpm'
        cache-dependency-path: |
          base/pnpm-lock.yaml
          head/pnpm-lock.yaml
    - name: Install base dependencies
      working-directory: base
      run: pnpm i --frozen-lockfile
    - name: Check base pnpm-lock.yaml
      working-directory: base
      run: git diff --exit-code pnpm-lock.yaml
    - name: Configure base
      working-directory: base
      run: |
        cp .github/misskey/test.yml .config/default.yml
        pnpm compile-config
    - name: Build base
      working-directory: base
      run: pnpm build
    - name: Install head dependencies
      working-directory: head
      run: pnpm i --frozen-lockfile
    - name: Check head pnpm-lock.yaml
      working-directory: head
      run: git diff --exit-code pnpm-lock.yaml
    - name: Configure head
      working-directory: head
      run: |
        cp .github/misskey/test.yml .config/default.yml
        pnpm compile-config
    - name: Build head
      working-directory: head
      run: pnpm build
    - name: Measure backend memory usage
      env:
        MK_MEMORY_COMPARE_ROUNDS: 5
        MK_MEMORY_COMPARE_WARMUP_ROUNDS: 1
        MK_MEMORY_HEAP_SNAPSHOT: 1
      run: node head/.github/scripts/measure-backend-memory-comparison.mts base head memory-base.json memory-head.json
    - name: Measure backend loaded JS footprint
      run: |
        node head/.github/scripts/backend-js-footprint.mjs base js-footprint-base.json
        node head/.github/scripts/backend-js-footprint.mjs head js-footprint-head.json
    - name: Upload Artifact
      uses: actions/upload-artifact@v7
      with:
        name: memory-artifact-results
        path: |
          memory-base.json
          memory-head.json
          js-footprint-base.json
          js-footprint-head.json

  save-pr-number:
    runs-on: ubuntu-latest
    permissions: {}
    steps:
      - name: Save PR number
        env:
          PR_NUMBER: ${{ github.event.number }}
        run: |
          echo "$PR_NUMBER" > ./pr_number
      - uses: actions/upload-artifact@v7
        with:
          name: memory-artifact-pr-number
          path: pr_number