cache-sdks.yaml

name: Seed SDK cache

on:
    push:
        branches:
            - main
            - "release_*"
        paths:
            - .gitmodules
            - third_party/simplicity_sdk
            - third_party/wifi_sdk
    workflow_dispatch:

permissions:
    contents: read
    actions: write

jobs:
    check-branch:
        name: Require main or release_*
        runs-on: ubuntu-latest
        steps:
            - name: Verify branch
              run: |
                  set -euo pipefail
                  if [[ "${{ github.ref_name }}" != "main" && ! "${{ github.ref_name }}" =~ ^release_ ]]; then
                      echo "Seed SDK cache can only run on main or release_*. Current ref: ${{ github.ref_name }}"
                      exit 1
                  fi

    cache-sdks:
        name: Seed simplicity_sdk and wifi_sdk cache
        needs: check-branch
        runs-on: ubuntu-latest
        outputs:
            cache-key: ${{ steps.cache-sdks.outputs.cache-key }}
            cache-hit: ${{ steps.cache-sdks.outputs.cache-hit }}
        steps:
            - name: Checkout
              uses: actions/checkout@v7
              with:
                  submodules: false
            - name: Cache SDKs
              id: cache-sdks
              uses: ./.github/actions/cache-sdks

    delete-previous-sdk-cache:
        name: Delete previous SDK cache
        needs: cache-sdks
        if: always() && needs.cache-sdks.result == 'success'
        runs-on: ubuntu-latest
        permissions:
            actions: write
        steps:
            - name: Delete old branch cache and PR SDK caches
              env:
                  GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
                  SDK_CACHE_KEY: ${{ needs.cache-sdks.outputs.cache-key }}
                  CACHE_HIT: ${{ needs.cache-sdks.outputs.cache-hit }}
              run: |
                  set -euo pipefail
                  if [[ -z "${SDK_CACHE_KEY}" ]]; then
                      echo "No SDK cache key; skipping"
                      exit 0
                  fi

                  CURRENT_REF="${{ github.ref }}"
                  echo "Seed cache-hit=${CACHE_HIT}"
                  echo "Required SDK cache key: ${SDK_CACHE_KEY}"
                  echo "Current ref: ${CURRENT_REF}"

                  CACHES=$(gh cache list --repo "${{ github.repository }}" --json id,key,ref --limit 100)
                  echo "${CACHES}" | jq -c '.[] | select(.key | startswith("silabs-sdks-"))'

                  persisted=$(echo "${CACHES}" | jq --arg key "${SDK_CACHE_KEY}" --arg ref "${CURRENT_REF}" \
                    '[.[] | select(.key == $key and .ref == $ref)] | length')
                  if [[ "${persisted}" -eq 0 ]]; then
                      echo "New key is not listed on ${CURRENT_REF}."
                      echo "actions/cache/save can succeed without persisting (soft-lock/reserve failure)."
                      echo "Keeping previous main/release_* caches."
                      exit 1
                  fi

                  echo "${CACHES}" | jq -c '.[] | select(.key | startswith("silabs-sdks-"))' \
                    | while read -r entry; do
                        id=$(echo "${entry}" | jq -r '.id')
                        key=$(echo "${entry}" | jq -r '.key')
                        ref=$(echo "${entry}" | jq -r '.ref')
                        if [[ "${ref}" == "${CURRENT_REF}" && "${key}" != "${SDK_CACHE_KEY}" ]]; then
                            echo "Deleting previous SDK cache id=${id} ref=${ref} key=${key}"
                            gh cache delete "${id}" --repo "${{ github.repository }}" || echo "Failed to delete ${id}"
                        elif [[ "${ref}" != "refs/heads/main" && ! "${ref}" =~ ^refs/heads/release_ ]]; then
                            echo "Deleting PR SDK cache id=${id} ref=${ref} key=${key}"
                            gh cache delete "${id}" --repo "${{ github.repository }}" || echo "Failed to delete ${id}"
                        else
                            echo "Keeping SDK cache id=${id} ref=${ref} key=${key}"
                        fi
                      done