labeler.yml

#
# Copyright (C) 2019-2023 vdaas.org vald team <vald@vdaas.org>
#
# 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
#
#    https://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,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
name: "Pull Request Labeler"
on:
  - pull_request

jobs:
  dump-contexts-to-log:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: ./.github/actions/dump-context

  triage:
    name: Triage
    runs-on: ubuntu-latest
    if: ${{ (github.event_name == 'pull_request' && github.event.pull_request.head.repo.fork == false) }}
    steps:
      - uses: actions/labeler@v4
        with:
          repo-token: "${{ secrets.GITHUB_TOKEN }}"

      - uses: actions/checkout@v3
        with:
          ref: ${{ github.head_ref }}
          fetch-depth: 0

      - name: Set Git config
        run: |
          git config --global --add safe.directory ${GITHUB_WORKSPACE}

      - name: Add labels
        run: |
          pr_num=`cat $GITHUB_EVENT_PATH | jq -r ".number"`
          branch_name=`cat $GITHUB_EVENT_PATH | jq -r ".pull_request.head.ref"`
          type_labels=($(curl -s "https://api.github.com/repos/${REPOSITORY}/labels?per_page=5000" | jq -r ".[].name" | grep -e "^type/"))
          send_labels=()

          git fetch origin main

          echo "branch name: " $branch_name
          for label in ${type_labels[@]}
          do
            if [[ "${label#type/}" =~ "${branch_name%%/*}" ]] || [[ "${branch_name%%/*}" =~ "${label#type/}" ]]; then
              send_labels+=(\"$label\")
            fi
          done

          size=0
          diff=`git diff --shortstat origin/main...${branch_name} ':!./*\.yaml' ':!./*\.yml' ':!./*\.svg' ':!./apis/*' ':!./design/*'`
          if [ -n "$diff" ]; then
            echo $diff
            size=`echo $diff | awk '{print $4+$6}'`
          fi

          echo "pull request size: " $size

          if [ $size -le 29 ]; then
            send_labels+=(\"size/S\")
          elif [ $size -le 99 ]; then
            send_labels+=(\"size/M\")
          elif [ $size -le 499 ]; then
            send_labels+=(\"size/L\")
          elif [ $size -le 999 ]; then
            send_labels+=(\"size/XL\")
          elif [ $size -le 4999 ]; then
            send_labels+=(\"size/XXL\")
          else
            send_labels+=(\"size/XXXL\")
          fi

          if [ ${#send_labels[@]} -gt 0 ]; then
            str="$(IFS=,; echo "${send_labels[*]}")"
            data="{\"labels\": [$str]}"
            echo "send data: " $data
            curl --request POST \
                 --url "https://api.github.com/repos/${REPOSITORY}/issues/${pr_num}/labels" \
                 --header "authorization: Bearer ${GITHUB_TOKEN}" \
                 --header 'content-type: application/json' \
                 --data "$data"
          fi
        env:
          REPOSITORY: ${{ github.repository }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  remove-duplication:
    name: Remove duplication
    needs:
      - triage
    runs-on: ubuntu-latest
    steps:
      - name: Remove duplication
        run: |
          declare -A SIZES
          declare -A PRIORITIES
          SIZES=(
            ["size/S"]=0
            ["size/M"]=30
            ["size/L"]=100
            ["size/XL"]=500
            ["size/XXL"]=1000
            ["size/XXXL"]=5000
          )
          PRIORITIES=(
            ["priority/low"]=10
            ["priority/medium"]=20
            ["priority/high"]=30
          )

          pr_num=`cat $GITHUB_EVENT_PATH | jq -r ".number"`
          existing_labels=($(curl -s "https://api.github.com/repos/${REPOSITORY}/issues/${pr_num}/labels" | jq -r ".[].name"))
          send_labels=()
          size_label="size/S"
          priority_label="priority/low"

          for label in ${existing_labels[@]}
          do
            if [ "${label%%/*}" = "size" ]; then
              if [ -z "${size_label}" ]; then
                size_label=$label
              else
                c="${SIZES[$size_label]}"
                s="${SIZES[$label]}"
                if [ ! -z "${s}" ] && [ $c -lt $s ]; then
                  size_label=$label
                fi
              fi
            elif [ "${label%%/*}" = "priority" ]; then
              if [ -z "${priority_label}" ]; then
                priority_label=$label
              else
                c="${PRIORITIES[$priority_label]}"
                s="${PRIORITIES[$label]}"
                if [ ! -z "${s}" ] && [ $c -lt $s ]; then
                  priority_label=$label
                fi
              fi
            else
              send_labels+=(\"$label\")
            fi

            if [ "${label}" = "type/security" ]; then
              l="priority/high"
              c="${PRIORITIES[$priority_label]}"
              s="${PRIORITIES[$l]}"
              if [ ! -z "${s}" ] && [ $c -lt $s ]; then
                priority_label=$l
              fi
            elif [ "${label}" = "type/bug" ] || [ "${label}" = "type/feature" ]; then
              l="priority/medium"
              c="${PRIORITIES[$priority_label]}"
              s="${PRIORITIES[$l]}"
              if [ ! -z "${s}" ] && [ $c -lt $s ]; then
                priority_label=$l
              fi
            fi
          done

          if [ ! -z "${size_label}" ]; then
            send_labels+=(\"$size_label\")
          fi

          if [ ! -z "${priority_label}" ]; then
            send_labels+=(\"$priority_label\")
          fi

          if [ ${#send_labels[@]} -gt 0 ]; then
            str="$(IFS=,; echo "${send_labels[*]}")"
            data="{\"labels\": [$str]}"
            echo "send data: " $data
            curl --request PUT \
                 --url "https://api.github.com/repos/${REPOSITORY}/issues/${pr_num}/labels" \
                 --header "authorization: Bearer ${GITHUB_TOKEN}" \
                 --header 'content-type: application/json' \
                 --data "$data"
          fi
        env:
          REPOSITORY: ${{ github.repository }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}