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developer-setup.md

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Development Workflow

Prerequisites

  • You have Go 1.14 installed on your local host/development machine.
  • You have Docker installed on your local host/development machine. Docker is required for building jiva-csi container images and to push them into a Kubernetes cluster for testing.
  • You have kubectl installed. For running integration tests, you will require an existing single node cluster with openebs installed. Don't worry if you don't have access to the Kubernetes cluster, raising a PR with the jiva-csi repository will run integration tests for your changes against a Minikube cluster.

Initial Setup

Fork in the cloud

  1. Visit https://github.com/openebs/jiva-csi
  2. Click Fork button (top right) to establish a cloud-based fork.

Clone fork to local host

Place openebs/jiva-csi's code on your GOPATH using the following cloning procedure. Create your clone:

mkdir -p $GOPATH/src/github.com/openebs
cd $GOPATH/src/github.com/openebs

# Note: Here user= your github profile name
git clone https://github.com/$user/jiva-csi.git

# Configure remote upstream
cd $GOPATH/src/github.com/openebs/jiva-csi
git remote add upstream https://github.com/openebs/jiva-csi.git

# Never push to upstream master
git remote set-url --push upstream no_push

# Confirm that your remotes make sense:
git remote -v

Note: If your GOPATH has more than one (: separated) paths in it, then you should use one of your go path instead of $GOPATH in the commands mentioned here. This statement holds throughout this document.

Building and Testing your changes

  • To build the docker image
make build
  • Test your changes Integration tests are written in shell script and jiva-csi controller and replicas are run as docker containers. To run the run the integration tests locally, run
make test

Git Development Workflow

Always sync your local repository:

Open a terminal on your local host. Change directory to the jiva-csi fork root.

$ cd $GOPATH/src/github.com/openebs/jiva-csi

Checkout the master branch.

$ git checkout master
Switched to branch 'master'
Your branch is up-to-date with 'origin/master'.

Recall that origin/master is a branch on your remote GitHub repository. Make sure you have the upstream remote openebs/jiva-csi by listing them.

$ git remote -v
origin	https://github.com/$user/jiva-csi.git (fetch)
origin	https://github.com/$user/jiva-csi.git (push)
upstream	https://github.com/openebs/jiva-csi.git (fetch)
upstream	https://github.com/openebs/jiva-csi.git (no_push)

If the upstream is missing, add it by using below command.

$ git remote add upstream https://github.com/openebs/jiva-csi.git

Fetch all the changes from the upstream master branch.

$ git fetch upstream master
remote: Counting objects: 141, done.
remote: Compressing objects: 100% (29/29), done.
remote: Total 141 (delta 52), reused 46 (delta 46), pack-reused 66
Receiving objects: 100% (141/141), 112.43 KiB | 0 bytes/s, done.
Resolving deltas: 100% (79/79), done.
From github.com:openebs/jiva-csi
  * branch            master     -> FETCH_HEAD

Rebase your local master with the upstream/master.

$ git rebase upstream/master
First, rewinding head to replay your work on top of it...
Fast-forwarded master to upstream/master.

This command applies all the commits from the upstream master to your local master.

Check the status of your local branch.

$ git status
On branch master
Your branch is ahead of 'origin/master' by 12 commits.
(use "git push" to publish your local commits)
nothing to commit, working directory clean

Your local repository now has all the changes from the upstream remote. You need to push the changes to your own remote fork which is origin master.

Push the rebased master to origin master.

$ git push origin master
Username for 'https://github.com': $user
Password for 'https://$user@github.com':
Counting objects: 223, done.
Compressing objects: 100% (38/38), done.
Writing objects: 100% (69/69), 8.76 KiB | 0 bytes/s, done.
Total 69 (delta 53), reused 47 (delta 31)
To https://github.com/$user/jiva-csi.git
8e107a9..5035fa1  master -> master

Contributing to a feature or bugfix.

Always start with creating a new branch from master to work on a new feature or bugfix. Your branch name should have the format XX-descriptive where XX is the issue number you are working on followed by some descriptive text. For example:

$ git checkout master
# Make sure the master is rebased with the latest changes as described in previous step.
$ git checkout -b 1234-fix-developer-docs
Switched to a new branch '1234-fix-developer-docs'

Happy Hacking!

Keep your branch in sync

Rebasing is very import to keep your branch in sync with the changes being made by others and to avoid huge merge conflicts while raising your Pull Requests. You will always have to rebase before raising the PR.

# While on your myfeature branch (see above)
git fetch upstream
git rebase upstream/master

While you rebase your changes, you must resolve any conflicts that might arise and build and test your changes using the above steps.

Submission

Create a pull request

Before you raise the Pull Requests, ensure you have reviewed the checklist in the CONTRIBUTING GUIDE:

  • Ensure that you have re-based your changes with the upstream using the steps above.
  • Ensure that you have added the required unit tests for the bug fixes or new feature that you have introduced.
  • Ensure your commits history is clean with proper header and descriptions.

Go to the openebs/jiva-csi github and follow the Open Pull Request link to raise your PR from your development branch.