sync-lockfiles.yml

name: Sync Cargo lockfiles

on:
  schedule:
    - cron: "0 0 * * *" # At the end of every day
  workflow_dispatch:
    inputs:
      branch:
        type: string
        description:
          The branch to sync across all depedant repositories. Defaults to the default branch on each repository
        required: false

defaults:
  run:
    shell: bash

jobs:
  fetch:
    name: Fetch Zenoh's lockfile
    runs-on: ubuntu-latest
    outputs:
      zenoh-head-hash: ${{ steps.info.outputs.head-hash }}
      zenoh-head-date: ${{ steps.info.outputs.head-date }}
    steps:
      - name: Checkout Zenoh
        uses: actions/checkout@v4
        with:
          repository: eclipse-zenoh/zenoh
          ref: ${{ inputs.branch }}

      - id: info
        name: Get HEAD info
        run: |
          echo "head-hash=$(git log -1 --format=%h)" >> $GITHUB_OUTPUT
          echo "head-date=$(git log -1 --format=%as)" >> $GITHUB_OUTPUT

      - name: Upload lockfile
        uses: actions/upload-artifact@v4
        with:
          name: Cargo.lock
          path: Cargo.lock

  sync:
    name: Sync Cargo lockfile with ${{ matrix.dependant }}
    needs: fetch
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        dependant:
          - zenoh-c
          - zenoh-python
          - zenoh-java
          - zenoh-kotlin
          - zenoh-plugin-dds
          - zenoh-plugin-mqtt
          - zenoh-plugin-ros1
          - zenoh-plugin-ros2dds
          - zenoh-plugin-webserver
          - zenoh-backend-filesystem
          - zenoh-backend-influxdb
          - zenoh-backend-rocksdb
          - zenoh-backend-s3
    steps:
      - name: Checkout ${{ matrix.dependant }}
        uses: actions/checkout@v4
        with:
          repository: eclipse-zenoh/${{ matrix.dependant }}
          ref: ${{ inputs.branch }}
          submodules: true
          token: ${{ secrets.BOT_TOKEN_WORKFLOW }}

      - name: Install Rust toolchain
        # NOTE: Showing the active Rust toolchain (defined by the rust-toolchain.toml file)
        # will have the side effect of installing it; if it's not installed already.
        run: rustup show

      # NOTE: Not all Zenoh dependants have their Cargo manifest and lockfile
      # at the repository's toplevel. The only exception being zenoh-kotlin and
      # zenoh-java. Thus the need for this ugly workaround.
      - name: Compute crate path of ${{ matrix.dependant }}
        id: crate-path
        run: |
          if [[ "${{ matrix.dependant }}" =~ zenoh-(java|kotlin) ]]; then
            echo "value=zenoh-jni" >> $GITHUB_OUTPUT
          else
            echo "value=." >> $GITHUB_OUTPUT
          fi

      - name: Override ${{ matrix.dependant }} lockfile with Zenoh's
        uses: actions/download-artifact@v4
        with:
          name: Cargo.lock
          path: ${{ steps.crate-path.outputs.value }}

      - name: Rectify lockfile
        # NOTE: Checking the package for errors will rectify the Cargo.lock while preserving
        # the dependency versions fetched from source.
        run: cargo check --manifest-path ${{ steps.crate-path.outputs.value }}/Cargo.toml

      - name: Create/Update a pull request if the lockfile changed
        id: cpr
        # NOTE: If there is a pending PR, this action will simply update it with a forced push.
        uses: peter-evans/create-pull-request@v6
        with:
          title: Sync `Cargo.lock` with Zenoh `${{ needs.fetch.outputs.zenoh-head-hash }}` from `${{needs.fetch.outputs.zenoh-head-date }}`
          body: |
            This pull request synchronizes ${{ matrix.dependant }}'s Cargo lockfile with Zenoh's. This is done to ensure ABI compatibility between Zenoh applications, backends & plugins.

            - **sha**: eclipse-zenoh/zenoh@${{ needs.fetch.outputs.zenoh-head-hash }}
            - **date**: ${{ needs.fetch.outputs.zenoh-head-date }}
            - **workflow**: [${{ github.run_id}}](https://github.com/eclipse-zenoh/ci/actions/runs/${{ github.run_id }})
          commit-message: "build: Sync Cargo lockfile with Zenoh's"
          committer: eclipse-zenoh-bot <eclipse-zenoh-bot@users.noreply.github.com>
          author: eclipse-zenoh-bot <eclipse-zenoh-bot@users.noreply.github.com>
          base: ${{ inputs.branch }}
          branch: eclipse-zenoh-bot/sync-lockfile
          delete-branch: true
          labels: dependencies
          token: ${{ secrets.BOT_TOKEN_WORKFLOW }}

      - name: Enable auto merge for the pull request
        if: ${{ steps.cpr.outputs.pull-request-operation == 'created' }}
        run: >
          gh pr merge "${{ steps.cpr.outputs.pull-request-number }}"
          --subject "build: Sync `Cargo.lock` with eclipse-zenoh/zenoh@${{ needs.fetch.outputs.zenoh-head-hash }} from ${{ needs.fetch.outputs.zenoh-head-date }} (#${{ steps.cpr.outputs.pull-request-number }})"
          --repo "eclipse-zenoh/${{ matrix.dependant }}"
          --squash
          --auto
        env:
          GH_TOKEN: ${{ secrets.BOT_TOKEN_WORKFLOW }}