publish-release.yml

name: Publish release

on:
  push:
    tags:
      - '*'

jobs:

  release:
    name: Publish release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout the source
        uses: actions/checkout@v2

      - name: Setup Python
        uses: actions/setup-python@v3
        with:
          python-version: '3.10'
          cache: 'pip'

      - name: Install Python modules
        run: pip install -r .github/workflows/requirements.txt

      - name: Setup Go
        uses: actions/setup-go@v4
        with:
          go-version: '1.21'

      - name: Create release
        shell: python
        run: |
          import os
          import re
          import requests
          import shutil
          import subprocess
          
          # Get the context and secret data that we will need:
          repository = "${{ github.repository }}"
          reference = "${{ github.ref }}"
          token = "${{ secrets.GITHUB_TOKEN }}"
          
          # Calculate the version number:
          version = re.sub(r"^refs/tags/v(.*)$", r"\1", reference)
          
          # Make sure that the assets directory exists and is empty:
          assets = "assets"
          shutil.rmtree(assets, ignore_errors=True)
          os.mkdir(assets)
          
          def build(goos: str, goarch: str):
              # Set the environment variables that tell the Go compiler which
              # operating system and architecture to build for:
              env = dict(os.environ)
              env["GOOS"] = goos
              env["GOARCH"] = goarch
          
              # Build the binary:
              args = ["make", "build"]
              subprocess.run(check=True, env=env, args=args)
          
              # Copy the generated binary to the assets directory:
              binary = "rosa-support"
              asset = os.path.join(assets, f"rosa-support-{goos}-{goarch}")
              os.rename(binary, asset)
          
          # Build for the supported operating systems and architectures:
          build("darwin", "amd64")
          build("linux", "amd64")
          build("linux", "arm64")
          build("linux", "ppc64le")
          build("linux", "s390x")
          
          # Calculate the SHA256 digests:
          for asset in os.listdir(assets):
              digest = os.path.join(assets, f"{asset}.sha256")
              with open(digest, "wb") as stream:
                  args = ["sha256sum", asset]
                  subprocess.run(check=True, cwd=assets, stdout=stream, args=args)
          
          # Get the list of changes:
          body = ""
          with open("CHANGES.md", "r") as stream:
              while True:
                  line = stream.readline()
                  if line == "" or line.startswith("## " + version):
                      break
              while True:
                  line = stream.readline()
                  if line == "" or line.startswith("## "):
                      break
                  body += line
          
          # Send the request to create the release:
          response = requests.post(
              headers={
                  "Authorization": f"Bearer {token}",
                  "Content-Type": "application/json",
                  "Accept": "application/json",
              },
              json={
                  "tag_name": f"v{version}",
                  "name": f"Release {version}",
                  "body": body,
              },
              url=(
                  "https://api.github.com"
                  f"/repos/{repository}/releases"
              ),
          )
          response.raise_for_status()
          
          # Get the release identifier:
          release = response.json()["id"]
          
          # Upload the assets:
          for asset in os.listdir(assets):
              file = os.path.join(assets, asset)
              with open(file, "rb") as stream:
                  response = requests.post(
                      headers={
                          "Authorization": f"Bearer {token}",
                          "Content-Type": "application/octet-stream",
                          "Accept": "application/json",
                      },
                      data=stream,
                      url=(
                          "https://uploads.github.com"
                          f"/repos/{repository}/releases/{release}/assets?name={asset}"
                      ),
                  )
                  response.raise_for_status()