release.yml

name: Release

# Creates the tag and GitHub release for a new controller version once it lands
# on main. The version comes from the operator image in controller.yaml, the
# notes from its CHANGELOG.md section.

on:
  push:
    branches:
      - main
    paths:
      - controller.yaml
  workflow_dispatch:

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Read version
        id: version
        run: |
          VERSION=$(grep -oE 'localstack/localstack-k8s-operator:v[0-9]+\.[0-9]+\.[0-9]+' controller.yaml | head -1 | cut -d: -f2)
          if [ -z "$VERSION" ]; then
            echo "::error::controller.yaml doesn't reference a localstack/localstack-k8s-operator:vX.Y.Z image"
            exit 1
          fi
          if git rev-parse -q --verify "refs/tags/$VERSION" >/dev/null; then
            echo "$VERSION is already released"
            echo "exists=true" >> "$GITHUB_OUTPUT"
          else
            echo "exists=false" >> "$GITHUB_OUTPUT"
          fi
          echo "version=$VERSION" >> "$GITHUB_OUTPUT"

      # The section for the new version, up to the next heading or the reference links
      - name: Extract release notes
        if: steps.version.outputs.exists == 'false'
        env:
          VERSION: ${{ steps.version.outputs.version }}
        run: |
          awk -v heading="## [${VERSION#v}]" '
            in_section && ($0 ~ "^## \\[" || $0 ~ "^\\[[0-9]") { exit }
            in_section { print; next }
            index($0, heading) == 1 { in_section = 1 }
          ' CHANGELOG.md | sed -e '/./,$!d' > notes.md
          if [ ! -s notes.md ]; then
            echo "::error::No '## [${VERSION#v}]' section found in CHANGELOG.md"
            exit 1
          fi

      - name: Create release
        if: steps.version.outputs.exists == 'false'
        env:
          GH_TOKEN: ${{ github.token }}
          VERSION: ${{ steps.version.outputs.version }}
        run: |
          gh release create "$VERSION" --target "$GITHUB_SHA" --title "$VERSION" \
            --notes-file notes.md controller.yaml api-docs.md