nightly.yaml

# Part of the Crubit project, under the Apache License v2.0 with LLVM
# Exceptions. See /LICENSE for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
name: Crubit Nightly Test Matrix
on:
  workflow_dispatch:

permissions:
  contents: write
  issues: write

jobs:
  update-and-generate:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          submodules: true
          fetch-depth: 0
          ref: test-matrix

      - name: Update Crubit Submodule
        run: |
          git submodule update --init --remote crubit

      - name: Fetch Versions and Generate Matrix
        id: set-matrix
        run: |
          # Fetch and format the versions into a JSON object
          VERSIONS=$(curl -s https://rust-lang.github.io/rustup-components-history/x86_64-unknown-linux-gnu/rustc-dev.json | \
            jq -c 'del(.last_available) | keys | sort | reverse | to_entries | {include: [.[] | {version: ("nightly-" + .value), id: .key}]}')
          
          # Write to file for repo persistence
          echo "$VERSIONS" > matrix.json
          
          # Set output for the next job
          echo "matrix=$VERSIONS" >> $GITHUB_OUTPUT

      - name: Commit and Push Updates
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          
          git add crubit matrix.json
          if git diff --staged --quiet; then
            echo "No changes detected."
          else
            git commit -m "chore: update crubit and matrix.json"
            git push origin test-matrix
          fi

  build:
    needs: update-and-generate
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix: ${{ fromJSON(needs.update-and-generate.outputs.matrix) }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          submodules: true
          fetch-depth: 0
          ref: test-matrix

      - name: Install Rust Toolchain
        uses: actions-rust-lang/setup-rust-toolchain@v1
        with:
          toolchain: ${{ matrix.version }}
          components: "rust-src, rustc-dev, llvm-tools-preview"

      - name: Build Binary
        env:
          RUSTUP_TOOLCHAIN: ${{ matrix.version }}
          RUSTFLAGS: -Awarnings
        run: |
          cd crubit
          cargo check --bin cc_bindings_from_rs

      - name: Create Badge JSON
        if: always()
        run: |
          STATUS="${{ job.status }}"
          COLOR="brightgreen"
          MESSAGE="passing"
          if [ "$STATUS" != "success" ]; then
            COLOR="red"
            MESSAGE="failing"
          fi
          echo "{\"schemaVersion\": 1, \"label\": \"${{ matrix.version }}\", \"message\": \"$MESSAGE\", \"color\": \"$COLOR\"}" > nightly-${{ matrix.id }}.json

      - name: Upload JSON Artifact
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: badge-${{ matrix.id }}
          path: nightly-${{ matrix.id }}.json

  upload-badges:
    needs: build
    if: always()
    runs-on: ubuntu-latest
    steps:
      - name: Checkout main branch
        uses: actions/checkout@v4
        with:
          ref: test-matrix

      - name: Download all JSON artifacts
        uses: actions/download-artifact@v4
        with:
          path: badges_temp
          pattern: badge-*
          merge-multiple: true

      - name: Push JSONs to target branch
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          
          mv badges_temp/*.json .
          git add *.json
          
          if git diff --staged --quiet; then
            echo "No changes in badges."
          else
            git commit -m "chore: update status badges"
            git push origin test-matrix
          fi

  notify-failures:
    needs: build
    if: false
    runs-on: ubuntu-latest
    steps:
      - name: Checkout main branch
        uses: actions/checkout@v4
        with:
          ref: test-matrix
      - name: Report failure in issue
        env:
          GH_TOKEN: ${{ github.token }}
          TEAM_HANDLE: "@google/crubit-readers"
        run: |
          TITLE="🚨 Nightly Test Matrix Failure: $(date +'%Y-%m-%d')"
          
          BODY="Attention $TEAM_HANDLE: The nightly test matrix has failed.

          **Run Details:** [View Workflow Run](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})"

          gh issue create \
            --title "$TITLE" \
            --body "$BODY" \
            --label "bug,automated-report"