publish-helm.yml

# Copyright 2024 CS Group
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
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# See the License for the specific language governing permissions and
# limitations under the License.

name: Publish Helm charts

# TODO: is it possible to run this workflow only if the check-code-quality workflow has completed successfully ?
# I've tried workflow_run but see:
# https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#workflow_run
# Note: This event will only trigger a workflow run if the workflow file is on the default branch.

# Run workflow only for new git tags (including hierarchical tags like v1.0/beta), or manually
on:
  push:
    tags:
      - '**'
    branches:
      - 'feat**'  
  workflow_dispatch:

env:
  DOCKER_REGISTRY: ghcr.io

jobs:

  #######################
  # Publish Helm charts #
  #######################

  rs-server-helm-chart:
    runs-on: ubuntu-latest
    name: "rs-server Helm chart"
    permissions: write-all

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0 # fetch all history for all branches and tags.

      - name: Get the rs-server version tag
        id: get_version
        shell: bash
        run: |
          # Enable pipefail so git command failures do not result in null versions downstream
          set -x

          if [ "$GITHUB_REF_TYPE" == "tag" ]; then
            if [[ "$GITHUB_REF_NAME" =~ v[0-9].[0-9][ab] || "$GITHUB_REF_NAME" =~ v[0-9][ab] ]] ; then
              # Sprint release
              # v0.1a10
              echo "APP_VERSION=$(\
                git ls-remote --tags --refs --sort="v:refname" \
                https://github.com/RS-PYTHON/rs-server.git | grep -E 'v[0-9](.)?([0-9])?[ab]' | tail -n1 | sed 's/.*\///' \
              )" >> $GITHUB_OUTPUT
              # v0.1a10

              # Ugly workaround to transform the chart_version into SemVer 2, required by Helm
              CHART_VERSION_TMP=$(echo $GITHUB_REF_NAME | sed 's/.*\///' | sed 's/^v//')
              CHART_VERSION_PREFIX=${CHART_VERSION_TMP%[ab]*}
              CHART_VERSION_SUFFIX=${CHART_VERSION_TMP/#$CHART_VERSION_PREFIX}
              while [[ ${#CHART_VERSION_PREFIX} -lt 5 ]]; do
                CHART_VERSION_PREFIX+=".0"
              done
              if [[ ${#CHART_VERSION_PREFIX} -eq 5 ]]; then
                echo "CHART_VERSION=$CHART_VERSION_PREFIX-$CHART_VERSION_SUFFIX" >> $GITHUB_OUTPUT
              fi
              # v0.1a7 => 0.1.0-a7
              # v1a7 => 1.0.0-a7
            elif [[ "$GITHUB_REF_NAME" = v[0-9].[0-9] || "$GITHUB_REF_NAME" = v[0-9] ]] ; then
              # Checkpoint release
              # v0.1 or v1
              echo "APP_VERSION=$(\
                git ls-remote --tags --refs --sort="v:refname" \
                https://github.com/RS-PYTHON/rs-server.git | grep -E 'v[0-9](.)?([0-9])?$' | tail -n1 | sed 's/.*\///' \
              )" >> $GITHUB_OUTPUT
              # v0.1

              CHART_VERSION=$(echo $GITHUB_REF_NAME | sed 's/.*\///' | sed 's/^v//')
              while [[ ${#CHART_VERSION} -lt 5 ]]; do
                CHART_VERSION+=".0"
              done
              if [[ ${#CHART_VERSION} -eq 5 ]]; then
                echo "CHART_VERSION=$CHART_VERSION" >> $GITHUB_OUTPUT
              fi
              # v0.1 => 0.1.0
              # v1   => 1.0.0 
            fi
          elif [ "$GITHUB_REF_TYPE" == "branch" ]; then
            echo "APP_VERSION=$(\
              git ls-remote --tags --refs --sort="v:refname" \
              https://github.com/RS-PYTHON/rs-server.git | grep -E 'v[0-9](.)?([0-9])?[ab]' | tail -n1 | sed 's/.*\///' \
            )" >> $GITHUB_OUTPUT
            # v0.1a10

            # Ugly workaround to transform the chart_version into SemVer 2, required by Helm
            CHART_VERSION_TMP=$(git ls-remote --tags --refs --sort="v:refname" \
                https://github.com/RS-PYTHON/rs-server.git | grep -E 'v[0-9](.)?([0-9])?[ab]' | tail -n1 | sed 's/.*\///' | sed 's/^v//')
            CHART_VERSION_PREFIX=${CHART_VERSION_TMP%[ab]*}
            CHART_VERSION_SUFFIX=${CHART_VERSION_TMP/#$CHART_VERSION_PREFIX}
            while [[ ${#CHART_VERSION_PREFIX} -lt 5 ]]; do
              CHART_VERSION_PREFIX+=".0"
            done
            if [[ ${#CHART_VERSION_PREFIX} -eq 5 ]]; then
              echo "CHART_VERSION=$CHART_VERSION_PREFIX-$CHART_VERSION_SUFFIX-$(git rev-parse --short "$GITHUB_SHA")" >> $GITHUB_OUTPUT
            fi
            # v0.1a7 => 0.1.0-a7-1tr5hrt
            # v1a7 => 1.0.0-a7-1tr5hrt
          fi

      - name: Update version number in chart.yaml
        shell: bash
        run: |
          for chart in $(find charts -name Chart.yaml); do          
            sed -i "s,{{APP_VERSION}},${{ steps.get_version.outputs.APP_VERSION }}," $chart
            sed -i "s,{{CHART_VERSION}},${{ steps.get_version.outputs.CHART_VERSION }}," $chart
          done

      - id: publish-chart
        uses: ./.github/actions/publish-chart
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}