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CONTRIBUTING.md

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Contributing to Chaos Mesh

Thanks for your interest in improving the project! This document provides a step-by-step guide for general contributions to Chaos Mesh.

Communications

Before starting work on something major, please reach out to us via GitHub, Slack, email, etc. We will make sure no one else is already working on it and ask you to open a GitHub issue. Also, we will provide necessary guidance should you need it.

Specifically, if you want to develop a specific chaos type, you may also find Development Guide useful.

Submitting a PR

If you have a specific idea of a fix or update, follow these steps below to submit a PR:

Step 1: Make the change

  1. Fork the Chaos Mesh repo, and then clone it:

    export user={your github. profile name}
git clone [email protected]:${user}/chaos-mesh.git

  2. Set your cloned local to track the upstream repository:

    cd chaos-mesh
git remote add upstream https://github.com/chaos-mesh/chaos-mesh

  3. Disable pushing to upstream master:

    git remote set-url --push upstream no_push
git remote -v

    The output should look like:

    origin    [email protected]:$(user)/chaos-mesh.git (fetch)
origin    [email protected]:$(user)/chaos-mesh.git (push)
upstream  https://github.com/chaos-mesh/chaos-mesh (fetch)
upstream  no_push (push)

  4. Get your local master up-to-date and create your working branch:

    git fetch upstream
git checkout master
git rebase upstream/master
git checkout -b myfeature

  5. Make the change on the code.

    You can new edit the code on the myfeature branch.

    If you want to update the crd.yaml according the the CRD structs, run the following commands:

    make generate
make manifests/crd.yaml

  6. Check the code change by running the following command:

    make check

    This will show errors if your code change does not pass the check. (eg: fmt, lint). Please fix them before submitting the PR.

Step 2: Run unit tests

Before running your code in a real Kubernetes cluster, make sure it passes all unit tests:

make test

Step 3: Start Chaos Mesh locally and do manual tests

  1. Start a Kubernetes cluster locally. There are two options:

    • Use kind to start a Kubernetes cluster locally and kubectl to access the cluster. If you install these manually, run kind: kind create clusterto start the cluster.

    • Install the above dependencies in ~/local/bin using install.sh:

      ./install.sh --local kind --dependency-only

  2. Make sure the installation in step 1 is successful:

    source ~/.bash_profile
kind --version
...
kubectl version
...

  3. Install Chaos Mesh:

    Following command will rebuild project code and reinstall chaos mesh.

    ./hack/local-up-chaos-mesh.sh

Now you can test your code update on the deployed cluster.

Step 4: Commit and push your changes

Congratulations! Now you have finished all tests and are ready to commit your code.

  1. Run the following commands to keep your branch in sync:

    git fetch upstream
git rebase upstream/master

  2. Commit your changes:

    git add -A
git commit --signoff

  3. Push your changes to the remote branch:

    git push -f origin myfeature

Step 5: Create a pull request

  1. Visit your fork at https://github.com/chaos-mesh/chaos-mesh (replace the first chaos-mesh with your username).
  2. Click the Compare & pull request button next to your myfeature branch.
  3. Edit the description of the pull request to match your changes.

Step 6: Get a code review

Once your pull request has been opened, it will be assigned to at least two reviewers. The reviewers will do a thorough code review of correctness, bugs, opportunities for improvement, documentation and comments, and style.

Commit changes made in response to review comments to the same branch on your fork.