GitHub Pull Request
From Dogtag
Contents
Overview
Github Pull Request is a way to keep the official repo clean by allowing other developers to review your patch before it gets merged into the corresponding branch. It offers a lot of benefits over the gerrithub. See Gerrit vs GitHub Pull Request for entire adv/disadvantages
GitHub - Initial setup
- Clone the upstream project into a local repository
$ git clone https://github.com/dogtagpki/pki.git
- Create a fork of the project by clicking on the fork button:
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- Now, you'll have your own copy of Forked repo in the format: https://github.com/<your Github ID>/pki
- Now add this remote to your cloned repo
$ cd pki $ git remote add personal https://github.com/<your Github ID>/pki
- Check whether you see the following output:
$ git remote -v origin https://github.com/dogtagpki/pki (fetch) origin https://github.com/dogtagpki/pki (push) personal https://github.com/SilleBille/pki.git (fetch) personal https://github.com/SilleBille/pki.git (push)
Travis - Enabling Travis CI for forked repo
1. Go to https://travis-ci.org/ and sign in using Github (Top right button)
2. Add the forked repository by clicking the + sign next to My Repositories.
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3. Select the forked repository.
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If necessary, click on Sync projects from GitHub or Sync account on the top right of the page to refresh the list of repositories.
GitHub - Verify Travis CI for forked repo
In your forked project, (e. g. - https://github.com/<your Github ID>/pki/settings/installations), go to Settings -> Integration & services, verify that Travis CI appears under Services.
Submitting patches
- Checkout the branch to which you want to submit patch:
# To submit patches to master: $ git checkout master # To submit patches to DOGTAG_10_5_BRANCH: $ git checkout DOGTAG_10_5_BRANCH
- Create a new local dev branch (which you'll be submitting as the PR):
$ git checkout -b ticket-<number>
- Make changes (or cherry-pick changes from other branches) and commit them to your new local dev branch:
$ git commit -a <changes>
- Push the new local dev branch to your repo
# Note that ticket-<number> is the new local dev branch you created $ git push personal ticket-<number>
- This will trigger a travis CI build. Check to see whether you are ready to submit a PR
- Submit a pull request from your branch
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- Choose the correct to and from branch. You should see the list of commits that will form as patch. You'll see a screen similar to this:
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If there is an error, you'll see something like this:
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- Fill in the Commit Message and Commit Description that will appear in the official repo commit history
- Click on "Create Pull Request"
Merge and update fork
- Once your patch goes through and changes are reviewed, your patch is ready to be merged
- Click on the drop down next to "Merge"
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- Use the following guideline to keep the official repo commit history CLEAN:
Create Merge Commit = Creates a new commit on top of the last commit in the official branch (Not recommended) Squash & Merge = Use when you have lot of insignificant commits (like correcting changes from reviewers). This will Squash all your commits into 1 single commit Rebase & Merge = Use when your patch is actually a combination of different patches (every commit is significant). This will copy all the commits on top of the last commit in the branch
- Once merged, Github will provide you an option to delete your branch. DELETE IT!
- Now, to keep your fork clean and in-sync with official repo do this in your local:
$ git checkout master # or the branch you want to sync $ git pull origin master # or the branch you want to sync $ git push personal master # or the branch you want to sync $ git branch -D ticket-<number> # Delete the local branch which you deleted from Github
