check_update.yml

#
# Copyright (C) 2020-2024 Lin Song <linsongui@gmail.com>
#
# This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
# Unported License: http://creativecommons.org/licenses/by-sa/3.0/
#
# Attribution required: please include my name in any derivative and let me
# know how you have improved it!

name: check_update

on:
  workflow_call:
    inputs:
      os_type:
        required: true
        type: string
    secrets:
      CACHE_NAME:
        required: true
    outputs:
      should_test:
        value: ${{ jobs.check_update.outputs.should_test }}
      should_update:
        value: ${{ jobs.check_update.outputs.should_update }}

jobs:
  check_update:
    runs-on: ubuntu-22.04
    if: github.repository_owner == 'hwdsl2'
    env:
      DOCKER_USER: ${{ github.repository_owner }}
      OS_TYPE: ${{ inputs.os_type }}
    outputs:
      should_test: ${{ steps.check.outputs.should_test }}
      should_update: ${{ steps.check.outputs.should_update }}
    steps:
      - name: Cache
        uses: actions/cache@v4
        with:
          path: |
            ${{ runner.temp }}/.buildx-bin
            ${{ runner.temp }}/.buildx-cache
            ${{ runner.temp }}/.docker-images
          key: ${{ secrets.CACHE_NAME }}-${{ github.sha }}-${{ github.run_id }}-check
          restore-keys: |
            ${{ secrets.CACHE_NAME }}-
      - name: Prepare
        run: |
          if [ "$OS_TYPE" = "alpine" ]; then
            docker pull alpine:3.20
            docker pull "$DOCKER_USER/ipsec-vpn-server"
          elif [ "$OS_TYPE" = "debian" ]; then
            docker pull debian:bookworm-slim
            docker pull "$DOCKER_USER/ipsec-vpn-server:debian"
          else
            exit 1
          fi
      - name: Check
        id: check
        run: |
          BASE_UPDATED=false

          if [ "$OS_TYPE" = "alpine" ]; then
            base_ts=$(docker inspect --format='{{.Created}}' alpine:3.20)
            image_ts=$(docker inspect --format='{{.Created}}' "$DOCKER_USER/ipsec-vpn-server")
          elif [ "$OS_TYPE" = "debian" ]; then
            base_ts=$(docker inspect --format='{{.Created}}' debian:bookworm-slim)
            image_ts=$(docker inspect --format='{{.Created}}' "$DOCKER_USER/ipsec-vpn-server:debian")
          else
            exit 1
          fi

          if [ -n "$base_ts" ] && [ -n "$image_ts" ]; then
            base_ts_s=$(date -d "$base_ts" +%s)
            image_ts_s=$(date -d "$image_ts" +%s)
            ts_now=$(date -u +'%Y-%m-%dT%H:%M:%SZ')
            ts_now_s=$(date -d "$ts_now" +%s)
            diff_s=$((ts_now_s - base_ts_s))
            diff=$(printf '%dd %dh:%dm:%ds\n' $(($diff_s/86400)) $(($diff_s%86400/3600)) $(($diff_s%3600/60)) $(($diff_s%60)))

            echo "Base update time:  $base_ts"
            echo "Image update time: $image_ts"
            echo "Current time:      $ts_now"
            echo "Time diff (cur-base): $diff (${diff_s}s)"

            if [ -n "$base_ts_s" ] && [ -n "$image_ts_s" ] \
              && [ "$base_ts_s" -ge "$image_ts_s" ] \
              && [ "$diff_s" -ge 14400 ]; then
              echo "Starting build..."
              BASE_UPDATED=true
            else
              echo "Not starting build."
            fi
          fi
          echo "should_test=${BASE_UPDATED}" >> "$GITHUB_OUTPUT"
          echo "should_update=${BASE_UPDATED}" >> "$GITHUB_OUTPUT"