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  -  Programming   -  GitHub   -  Auto Create and Auto Merge using GitHub Actions by Cron

Auto Create and Auto Merge using GitHub Actions by Cron

GitHub, Programming
Auto Create and Auto Merge using GitHub Actions by Cron

How to Auto Create and Auto Merge using GitHub Actions

I wrote GitHub Actions yaml code, which enables creating a pull request automatically, and merging the pull request automatically.

name: Auto merge dev2stage

on:
  schedule:
    - cron: "0 15 * * *"

jobs:
  auto-merge-dev2stage:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
        with:
          ref: dev
      - name: 【定期実行】Create Pull Request dev2stage
        id: create-pull-request
        env:
          GH_TOKEN: ${{ secrets.AUTO_DEP_TOKEN }}
        run: |
          PULL_REQUEST_URI=$(gh pr create -B stage -t 【定期実行】dev2stage -l 'auto merge' -b "")
          echo "::set-output name=PULL_REQUEST_URI::$PULL_REQUEST_URI"
      - name: 【定期実行】Merge Pull Request dev2stage
        env:
          GH_TOKEN: ${{ secrets.AUTO_DEP_TOKEN }}
        run: |
          gh pr merge ${{steps.create-pull-request.outputs.PULL_REQUEST_URI}} --merge

Cron

Using cron, the Action runs on specific time on the day.

on:
  schedule:
    - cron: "0 15 * * *"

In this case this Action runs on 15:00(WST).

Creating a Pull Request

      - name: 【定期実行】Create Pull Request dev2stage
        id: create-pull-request
        env:
          GH_TOKEN: ${{ secrets.AUTO_DEP_TOKEN }}
        run: |
          PULL_REQUEST_URI=$(gh pr create -B stage -t 【定期実行】dev2stage -l 'auto merge' -b "")
          echo "::set-output name=PULL_REQUEST_URI::$PULL_REQUEST_URI"

With GitHub CLI、a pull request can be submitted.
`gh pr create` command create a pull request with some options.

-B: the base branch
t: the title of the pull request.
-l: label of the pull request.
-b: body of the pull request

In some cases, error occurs.

  1. Already a pull request exists from the branch to base branch
  2. Some conflicts exist
  3. No diffs

Auto Merge

      - name: 【定期実行】Merge Pull Request dev2stage
        env:
          GH_TOKEN: ${{ secrets.AUTO_DEP_TOKEN }}
        run: |
          gh pr merge ${{steps.create-pull-request.outputs.PULL_REQUEST_URI}} --merge

With GitHub CLI

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