cache-prepare.yml

name: Cache - Prepare

on:
  push:
    branches: [ master ]
    paths-ignore:
      - 'docs/**'

  pull_request:
    branches: [ master ]
    paths-ignore:
      - 'docs/**'

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

  schedule:
    # * is a special character in YAML so you have to quote this string
    - cron:  '0 4 * * *'

concurrency:
  group: "workflow = ${{ github.workflow }}, ref = ${{ github.event.ref }}, pr = ${{ github.event.pull_request.id }}"
  cancel-in-progress: ${{ github.event_name == 'pull_request' || github.repository != 'cdi-unit/cdi-unit' }}

defaults:
  run:
    shell: bash

jobs:
  prepare:
    strategy:
      fail-fast: false
      matrix:
        os: [ ubuntu-latest, windows-latest ]

    runs-on: ${{ matrix.os }}

    steps:
      - name: Generate cache key
        id: cache-key
        run: |
          CURRENT_BRANCH="${{ github.repository != 'cdi-unit/cdi-unit' && 'fork' || github.base_ref || github.ref_name }}"
          CURRENT_MONTH=$(/bin/date -u "+%Y-%m")
          CURRENT_DAY=$(/bin/date -u "+%d")
          ROOT_CACHE_KEY="m2-cache"
          echo "m2-monthly-cache-key=${ROOT_CACHE_KEY}-${CURRENT_MONTH}" >> $GITHUB_OUTPUT
          echo "m2-monthly-branch-cache-key=${ROOT_CACHE_KEY}-${CURRENT_MONTH}-${CURRENT_BRANCH}" >> $GITHUB_OUTPUT
          echo "m2-cache-key=${ROOT_CACHE_KEY}-${CURRENT_MONTH}-${CURRENT_BRANCH}-${CURRENT_DAY}" >> $GITHUB_OUTPUT

      - uses: actions/checkout@v4

      - name: Set up JDK 17
        uses: actions/setup-java@v4
        with:
          java-version: 17
          distribution: 'temurin'

      - name: Cache Maven Repository
        id: cache-maven
        uses: actions/cache@v4
        with:
          enableCrossOsArchive: true
          path: ~/.m2/repository
          # A new cache will be stored daily. After that first store of the day, cache save actions will fail because the cache is immutable but it's not a problem.
          # The whole cache is dropped monthly to prevent unlimited growth.
          # The cache is per branch but in case we don't find a branch for a given branch, we will get a cache from another branch.
          key: ${{ steps.cache-key.outputs.m2-cache-key }}
          restore-keys: |
            ${{ steps.cache-key.outputs.m2-monthly-branch-cache-key }}-
            ${{ steps.cache-key.outputs.m2-monthly-cache-key }}-

      - name: Populate Cache
        run: ./ci-support/prepare-build.sh