ci-pr.yml

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0

# This workflow runs CI and the PR Bot on pull requests.

name: CI
on:
  pull_request:

# Allow one instance of this workflow per pull request, and cancel older runs when new changes are pushed
concurrency:
  group: ci-yaml-${{ github.ref }}
  cancel-in-progress: true

jobs:
  # This job detects if the PR made changes to build tools. If it did, then it builds a new
  # build Docker image. Otherwise, it downloads a build image from Public ECR. In both cases,
  # it uploads the image as a build artifact for other jobs to download and use.
  acquire-base-image:
    name: Acquire Base Image
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with:
        path: smithy-rs
        fetch-depth: 0
    - name: Acquire base image
      id: acquire
      run: ./smithy-rs/tools/ci-build/acquire-build-image
    - name: Upload base image
      uses: actions/upload-artifact@v3
      with:
        name: smithy-rs-base-image
        path: smithy-rs-base-image
        retention-days: 1

  # Run shared CI after the Docker build image has either been rebuilt or found in ECR
  ci:
    needs: acquire-base-image
    uses: ./.github/workflows/ci.yml

  # The PR bot requires a Docker build image, so make it depend on the `acquire-base-image` job.
  pr_bot:
    name: PR Bot
    needs: acquire-base-image
    # Only run this job on pull requests (not directly on main)
    if: ${{ github.head_ref }}
    uses: ./.github/workflows/pull-request-bot.yml
    secrets:
      SMITHY_RS_PULL_REQUEST_CDN_S3_BUCKET_NAME: ${{ secrets.SMITHY_RS_PULL_REQUEST_CDN_S3_BUCKET_NAME }}
      SMITHY_RS_PULL_REQUEST_CDN_ROLE_ARN: ${{ secrets.SMITHY_RS_PULL_REQUEST_CDN_ROLE_ARN }}