check-go-versions.yml

name: Check Supported Go Versions
on:
  schedule:
  - cron: "0 17 * * *"
  workflow_dispatch:

jobs:
  check-go-eol:
    runs-on: ubuntu-latest
    outputs:
        latest: ${{ steps.parse.outputs.latest }}
        penultimate: ${{ steps.parse.outputs.penultimate }}
    timeout-minutes: 2
    steps:
      - uses: actions/checkout@v4
        # Perform a GET request to endoflife.date for the Go language. The response
        # contains all Go releases; we're interested in the 0'th and 1'th (latest and penultimate.)
      - name: Fetch officially supported Go versions
        uses: JamesIves/fetch-api-data-action@396ebea7d13904824f85b892b1616985f847301c
        with:
          endpoint: https://endoflife.date/api/go.json
          configuration: '{ "method": "GET" }'
          debug: true
        # Parse the response JSON and insert into environment variables for the next step.
      - name: Parse officially supported Go versions
        id: parse
        run: |
          echo "latest=${{ fromJSON(env.fetch-api-data)[0].latest }}" >> $GITHUB_OUTPUT
          echo "penultimate=${{ fromJSON(env.fetch-api-data)[1].latest }}" >> $GITHUB_OUTPUT


  create-prs:
    permissions:
      contents: write
      pull-requests: write
    needs: check-go-eol
    runs-on: ubuntu-latest
    strategy:
      matrix:
        branch: ["v7", "v8"]
      fail-fast: false
    env:
      officialLatestVersion: ${{ needs.check-go-eol.outputs.latest }}
      officialPenultimateVersion: ${{ needs.check-go-eol.outputs.penultimate }}
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ matrix.branch }}

      - name: Get current Go versions
        id: go-versions
        run:  cat ./.github/variables/go-versions.env > $GITHUB_OUTPUT

      - name: Run update script
        if: steps.go-versions.outputs.latest != env.officialLatestVersion
        id: update
        run: ./scripts/update-go-release-version.sh ${{ env.officialLatestVersion }} ${{ env.officialPenultimateVersion }} \

      - name: Create pull request
        if: steps.update.outcome == 'success'
        uses: peter-evans/create-pull-request@6d6857d36972b65feb161a90e484f2984215f83e
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          add-paths: |
            Dockerfile
            .github/variables/go-versions.env
          branch: "launchdarklyreleasebot/update-to-go${{ env.officialLatestVersion }}-${{ matrix.branch }}"
          author: "LaunchDarklyReleaseBot <LaunchDarklyReleaseBot@launchdarkly.com>"
          committer: "LaunchDarklyReleaseBot <LaunchDarklyReleaseBot@launchdarkly.com>"
          labels: ${{ matrix.branch }}
          title: "fix(deps): bump supported Go versions to ${{ env.officialLatestVersion }} and ${{ env.officialPenultimateVersion }}"
          commit-message: "Bumps from Go ${{ steps.go-versions.outputs.latest }} -> ${{ env.officialLatestVersion }} and ${{ steps.go-versions.outputs.penultimate }} -> ${{ env.officialPenultimateVersion }}."
          body: |
            It's time to update Relay's supported Go versions, due to a recent upstream Go release.

            The Go major release cadence is ~every 6 months; the two most recent major versions are supported. 
            Note that between major releases, the Go team often ships multiple minor versions. 
            
            
            |             | Current repo configuration         | Desired repo configuration                                                                                          |
            |-------------|------------------------------------|---------------------------------------------------------------------------------------------------------------------|
            | Latest      | ${{ steps.go-versions.outputs.latest }}      | [${{ env.officialLatestVersion }}](https://go.dev/doc/devel/release#go${{ env.officialLatestVersion }})           |
            | Penultimate | ${{ steps.go-versions.outputs.penultimate }}| [${{ env.officialPenultimateVersion }}](https://go.dev/doc/devel/release#go${{ env.officialPenultimateVersion }}) |


            This PR's change was generated by running:
            ```bash
            ./scripts/update-go-release-version.sh ${{ env.officialLatestVersion }} ${{ env.officialPenultimateVersion }}
            ```
            
            - [ ] I have triggered CI on this PR (either close & reopen this PR in Github UI, or `git commit -m "run ci" --allow-empty && git push`)