.github/workflows/twister-prep.yaml

name: Prep

on:
  workflow_call:
    outputs:
      subset:
        description: subset
        value: ${{ jobs.prep_push.outputs.subset != '' && jobs.prep_push.outputs.subset ||  jobs.prep_pr.outputs.subset }}
      size:
        description: size
        value: ${{ jobs.prep_push.outputs.size != '' && jobs.prep_push.outputs.size || jobs.prep_pr.outputs.size }}
      fullrun:
        description: fullrun
        value: ${{ jobs.prep_push.outputs.fullrun != '' && jobs.prep_push.outputs.fullrun || jobs.prep_pr.outputs.size }}

jobs:
  prep_pr:
    if: github.repository_owner == 'zephyrproject-rtos' && github.event_name == 'pull_request_target'
    runs-on:
      group: zephyr-runner-v2-linux-x64-4xlarge
    container:
      image: ghcr.io/zephyrproject-rtos/ci-repo-cache:v0.27.4.20241026
      options: '--entrypoint /bin/bash'
    outputs:
      subset: ${{ steps.output-services.outputs.subset }}
      size: ${{ steps.output-services.outputs.size }}
      fullrun: ${{ steps.output-services.outputs.fullrun }}
    env:
      MATRIX_SIZE: 10
      PUSH_MATRIX_SIZE: 20
      DAILY_MATRIX_SIZE: 80
      BSIM_OUT_PATH: /opt/bsim/
      BSIM_COMPONENTS_PATH: /opt/bsim/components
      TESTS_PER_BUILDER: 700
      COMMIT_RANGE: ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }}
      BASE_REF: ${{ github.base_ref }}
    steps:
      - name: Apply container owner mismatch workaround
        run: |
          # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
          #        match the container user UID because of the way GitHub
          #        Actions runner is implemented. Remove this workaround when
          #        GitHub comes up with a fundamental fix for this problem.
          git config --global --add safe.directory ${GITHUB_WORKSPACE}

      - name: Print cloud service information
        run: |
          echo "ZEPHYR_RUNNER_CLOUD_PROVIDER = ${ZEPHYR_RUNNER_CLOUD_PROVIDER}"
          echo "ZEPHYR_RUNNER_CLOUD_NODE = ${ZEPHYR_RUNNER_CLOUD_NODE}"
          echo "ZEPHYR_RUNNER_CLOUD_POD = ${ZEPHYR_RUNNER_CLOUD_POD}"

      - name: Clone cached Zephyr repository
        continue-on-error: true
        run: |
          git clone --shared /repo-cache/zephyrproject/zephyr .
          git remote set-url origin ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}

      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 0
          persist-credentials: false

      - name: Environment Setup
        run: |
          git config --global user.email "bot@zephyrproject.org"
          git config --global user.name "Zephyr Bot"
          rm -fr ".git/rebase-apply"
          git rebase origin/${BASE_REF}
          git clean -f -d
          git log  --pretty=oneline | head -n 10
          west init -l . || true
          west config manifest.group-filter -- +ci,+optional
          west config --global update.narrow true
          west update --path-cache /repo-cache/zephyrproject 2>&1 1> west.update.log || west update --path-cache /repo-cache/zephyrproject 2>&1 1> west.update.log || ( rm -rf ../modules ../bootloader ../tools && west update --path-cache /repo-cache/zephyrproject)
          west forall -c 'git reset --hard HEAD'

          echo "ZEPHYR_SDK_INSTALL_DIR=/opt/toolchains/zephyr-sdk-$( cat SDK_VERSION )" >> $GITHUB_ENV

      - name: Generate Test Plan with Twister
        id: test-plan
        run: |
          export ZEPHYR_BASE=${PWD}
          export ZEPHYR_TOOLCHAIN_VARIANT=zephyr
          python3 ./scripts/ci/test_plan.py -c origin/${BASE_REF}.. --pull-request -t $TESTS_PER_BUILDER
          if [ -s .testplan ]; then
            cat .testplan >> $GITHUB_ENV
          else
            echo "TWISTER_NODES=${MATRIX_SIZE}" >> $GITHUB_ENV
          fi
          rm -f testplan.json .testplan

      - name: Determine matrix size
        id: output-services
        run: |
          if [ -n "${TWISTER_NODES}" ]; then
            subset="[$(seq -s',' 1 ${TWISTER_NODES})]"
          else
            subset="[$(seq -s',' 1 ${MATRIX_SIZE})]"
          fi
          size=${TWISTER_NODES}

          echo "subset=${subset}" >> $GITHUB_OUTPUT
          echo "size=${size}" >> $GITHUB_OUTPUT
          echo "fullrun=${TWISTER_FULL}" >> $GITHUB_OUTPUT

  prep_push:
    if: github.repository_owner == 'zephyrproject-rtos' && (github.event_name == 'push' || github.event_name == 'schedule')
    runs-on: ubuntu-22.04
    outputs:
      subset: ${{ steps.output-services.outputs.subset }}
      size: ${{ steps.output-services.outputs.size }}
      fullrun: ${{ steps.output-services.outputs.fullrun }}
    env:
      MATRIX_SIZE: 10
      PUSH_MATRIX_SIZE: 20
      DAILY_MATRIX_SIZE: 80
      BSIM_OUT_PATH: /opt/bsim/
      BSIM_COMPONENTS_PATH: /opt/bsim/components
      TESTS_PER_BUILDER: 700
      COMMIT_RANGE: ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }}
      BASE_REF: ${{ github.base_ref }}
    steps:
      - name: Print cloud service information
        run: |
          echo "ZEPHYR_RUNNER_CLOUD_PROVIDER = ${ZEPHYR_RUNNER_CLOUD_PROVIDER}"
          echo "ZEPHYR_RUNNER_CLOUD_NODE = ${ZEPHYR_RUNNER_CLOUD_NODE}"
          echo "ZEPHYR_RUNNER_CLOUD_POD = ${ZEPHYR_RUNNER_CLOUD_POD}"

      - name: Determine matrix size
        id: output-services
        run: |
          if [ "${{github.event_name}}" = "push" ]; then
            subset="[$(seq -s',' 1 ${PUSH_MATRIX_SIZE})]"
            size=${MATRIX_SIZE}
          elif [ "${{github.event_name}}" = "schedule" -a "${{github.repository}}" = "zephyrproject-rtos/zephyr" ]; then
            subset="[$(seq -s',' 1 ${DAILY_MATRIX_SIZE})]"
            size=${DAILY_MATRIX_SIZE}
          else
            size=0
          fi

          echo "subset=${subset}" >> $GITHUB_OUTPUT
          echo "size=${size}" >> $GITHUB_OUTPUT
          echo "fullrun=${TWISTER_FULL}" >> $GITHUB_OUTPUT