code/.github/workflows/warm-caches.yml at main · PostHog/code · GitHub

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name: Warm caches

# GitHub only shares caches saved on main with other branches, and the PR
# workflows never run on main. This job seeds the caches they restore.

on:
  push:
    branches: [main]
  workflow_dispatch:

concurrency:
  group: warm-caches-${{ github.ref }}
  cancel-in-progress: true

jobs:
  linux:
    runs-on: ubuntu-latest
    timeout-minutes: 15
    permissions:
      contents: read
    steps:
      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      - name: Setup pnpm
        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9

      - name: Setup Node.js
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version: 22
          cache: "pnpm"

      # No restore-keys: a fresh save per commit keeps the cache from growing
      # forever, at the cost of a cold build on every main push.
      - name: Cache turbo artifacts
        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
        with:
          path: .turbo/cache
          key: turbo-${{ github.sha }}

      # Same key as code-storybook.yml's storybook job.
      - name: Cache Playwright browsers
        id: playwright-cache
        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
        with:
          path: ~/.cache/ms-playwright
          key: playwright-chromium-${{ runner.os }}-${{ hashFiles('pnpm-lock.yaml') }}

      - name: Install dependencies
        run: pnpm install --frozen-lockfile
        env:
          SKIP_ELECTRON_REBUILD: "1"

      - name: Seed turbo cache (build + typecheck)
        run: |
          pnpm run build:deps
          pnpm run typecheck

      - name: Install Playwright Chromium
        if: steps.playwright-cache.outputs.cache-hit != 'true'
        working-directory: apps/code
        run: pnpm exec playwright install chromium

  macos:
    runs-on: macos-latest
    timeout-minutes: 30
    permissions:
      contents: read
    steps:
      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      - name: Setup pnpm
        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9

      - name: Setup Node.js
        id: node
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version: 22
          cache: "pnpm"

      # Same keys as test.yml's integration-test job.
      - name: Cache Electron binary
        id: electron-cache
        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
        with:
          path: ~/Library/Caches/electron
          key: electron-${{ runner.os }}-${{ hashFiles('pnpm-lock.yaml') }}

      - name: Cache Playwright browsers
        id: playwright-cache
        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
        with:
          path: ~/Library/Caches/ms-playwright
          key: playwright-${{ runner.os }}-${{ hashFiles('pnpm-lock.yaml') }}

      # macOS minutes are 10x; do nothing when every cache is already warm.
      - name: Install dependencies
        if: >-
          steps.node.outputs.cache-hit != 'true' ||
          steps.electron-cache.outputs.cache-hit != 'true' ||
          steps.playwright-cache.outputs.cache-hit != 'true'
        # Electron's own postinstall fills ~/Library/Caches/electron; the sqlite
        # rebuild only touches node_modules, which is not cached, so skip it.
        run: pnpm install --frozen-lockfile
        env:
          SKIP_ELECTRON_REBUILD: "1"

      - name: Install Playwright Chromium
        if: steps.playwright-cache.outputs.cache-hit != 'true'
        run: pnpm --filter code exec playwright install chromium