entrypoint.sh

#!/bin/bash
# Varun Chopra <vchopra@eightfold.ai>
#
# This action runs every time a PR is updated & prepares it for CI.
# CI checks pull requests that are labeled 'needs_ci' and runs unit tests and lint.
# - If the 'needs_ci' label is present, no additional labels are added.
# - If the 'shipit' label is present, it ensures the 'needs_ci' label is added.
# - If neither 'needs_ci' nor 'shipit' are present, it adds the 'needs_ci:lite' label.
# - If 'ci_verified' label is present, it removes 'ci_verified' and adds 'needs_ci'.
# - If 'ci_verified:lite' label is present, it removes 'ci_verified:lite' and adds 'needs_ci:lite'.

set -e

if [[ -z "$GITHUB_TOKEN" ]]; then
  echo "Set the GITHUB_TOKEN env variable."
  exit 1
fi

if [[ -z "$GITHUB_REPOSITORY" ]]; then
  echo "Set the GITHUB_REPOSITORY env variable."
  exit 1
fi

if [[ -z "$GITHUB_EVENT_PATH" ]]; then
  echo "Set the GITHUB_EVENT_PATH env variable."
  exit 1
fi

URI="https://api.github.com"
API_HEADER="Accept: application/vnd.github.v3+json"
AUTH_HEADER="Authorization: token ${GITHUB_TOKEN}"

action=$(jq --raw-output .action "$GITHUB_EVENT_PATH")
pr_body=$(jq --raw-output .pull_request.body "$GITHUB_EVENT_PATH")
number=$(jq --raw-output .pull_request.number "$GITHUB_EVENT_PATH")
title=$(jq --raw-output .pull_request.title "$GITHUB_EVENT_PATH")
draft=$(jq --raw-output .pull_request.draft "$GITHUB_EVENT_PATH")

echo $title
echo $draft

if [[ "$draft" == "true" ]]; then
  echo "Skipping PR since it's still in draft."
  exit 0
fi

add_comment(){
  curl -sSL \
    -H "${AUTH_HEADER}" \
    -H "${API_HEADER}" \
    -X POST \
    -H "Content-Type: application/json" \
    -d "{\"body\":\"${1}\"}" \
    "${URI}/repos/${GITHUB_REPOSITORY}/issues/${number}/comments"
}

add_label(){
  curl -sSL \
    -H "${AUTH_HEADER}" \
    -H "${API_HEADER}" \
    -X POST \
    -H "Content-Type: application/json" \
    -d "{\"labels\":[\"${1}\"]}" \
    "${URI}/repos/${GITHUB_REPOSITORY}/issues/${number}/labels"
}

remove_label(){
  curl -sSL \
    -H "${AUTH_HEADER}" \
    -H "${API_HEADER}" \
    -X DELETE \
    "${URI}/repos/${GITHUB_REPOSITORY}/issues/${number}/labels/${1// /%20}"
}

body=$(curl -sSL -H "${AUTH_HEADER}" -H "${API_HEADER}" "${URI}/repos/${GITHUB_REPOSITORY}/pulls/${number}")

labels=$(echo "$body" | jq --raw-output '.labels[].name')

IFS=$'\n'

needs_ci_label_present=false
needs_ci_lite_label_present=false
shipit_label_present=false

for label in $labels; do
  case $label in
    ci_verified)
      echo "Removing label: $label and adding needs_ci"
      remove_label "$label"
      add_label "needs_ci"
      needs_ci_label_present=true
      ;;
    ci_verified:lite)
      echo "Removing label: $label and adding needs_ci:lite"
      remove_label "$label"
      add_label "needs_ci:lite"
      needs_ci_lite_label_present=true
      ;;
    needs_ci)
      echo "needs_ci label is already present"
      needs_ci_label_present=true
      ;;
    needs_ci:lite)
      echo "needs_ci:lite label is already present"
      needs_ci_lite_label_present=true
      ;;
    shipit)
      echo "shipit label is present"
      shipit_label_present=true
      ;;
    *)
      echo "Unknown label $label"
      ;;
  esac
done

if [[ "$shipit_label_present" = true ]]; then
  if [[ "$needs_ci_label_present" = false ]]; then
    add_label "needs_ci"
  fi
elif [[ "$needs_ci_lite_label_present" = false && "$needs_ci_label_present" = false ]]; then
  add_label "needs_ci:lite"
fi

echo "Pull request passed all checkpoints!"