PR Updater

This action automatically updates your branch as follows:

1. Every time code is pushed to the specified branches (under on.push.branches):
   1. Update all PRs with the same base branch which have their "auto merge" flag set to true
2. When enabling auto merge in a specific PR:
   1. Update the branch with changes from base branch

Usage

1. create file .github/workflows/pr-updater.yml with the following content:

   name: PR update
   
   on:
    pull_request:
      types:
        - auto_merge_enabled
    push:
      branches:
        - develop
   
   jobs:
       pr_update:
           runs-on: ubuntu-latest
           steps:
           - uses: actions/checkout@v1
       # Checks the event type of this workflow
       # if github.even.action == auto_merge_enabled then it is a PR context
       # Otherwise, push to develop context
           - id: set-pr-number
             run: |
                if [ "$IS_PR" == "auto_merge_enabled" ]; then
                    echo '::set-output name=pr_number::${{ github.event.number }}'
                else
                    echo '::set-output name=pr_number::'
                fi
             env:
               IS_PR: "${{ github.event.action }}"   
           - name: update all prs
               uses: maxkomarychev/pr-updater-action@v1.0.0
               with:
                   token: ${{ secrets.USER_TOKEN }}
                   base_branch: develop
                   current_pr_number: ${{ steps.set-pr-number.outputs.pr_number }}

Inputs

Input	type	required	default	description
token	string	false	${{ github.token }}
base_branch	string	true		The base branch to compare with
current_pr_number	string	false		The PR number to check. When empty, checks all open PRs with the relevant base branch

Current limitations

1. Due to rate limiting user token can only perform 5000 requests per hour
2. The action currently does not implement paging, so it can only update up to 100 pull requests in one run