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Development Guide

Building Kompose

Read about building kompose here.

Workflow

Fork the main repository

  1. Go to https://github.com/kubernetes/kompose
  2. Click the "Fork" button (at the top right)

Clone your fork

The commands below require that you have $GOPATH. We highly recommended you put Kompose' code into your $GOPATH.

git clone https://github.com/$YOUR_GITHUB_USERNAME/kompose.git $GOPATH/src/github.com/kubernetes/kompose
cd $GOPATH/src/github.com/kubernetes/kompose
git remote add upstream 'https://github.com/kubernetes/kompose'

Create a branch and make changes

git checkout -b myfeature
# Make your code changes

Keeping your development fork in sync

git fetch upstream
git rebase upstream/master

Note: If you have write access to the main repository at github.com/kubernetes/kompose, you should modify your git configuration so that you can't accidentally push to upstream:

git remote set-url --push upstream no_push

Committing changes to your fork

git commit
git push -f origin myfeature

Creating a pull request

  1. Visit https://github.com/$YOUR_GITHUB_USERNAME/kompose.git
  2. Click the "Compare and pull request" button next to your "myfeature" branch.
  3. Check out the pull request process for more details

glide, glide-vc and dependency management

Kompose uses glide to manage dependencies and glide-vc to clean vendor directory. They are not strictly required for building Kompose but they are required when managing dependencies under the vendor/ directory. If you want to make changes to dependencies please make sure that glide and glide-vc are installed and are in your $PATH.

Installing glide

There are many ways to build and host golang binaries. Here is an easy way to get utilities like glide and glide-vc installed:

Ensure that Mercurial and Git are installed on your system. (some of the dependencies use the mercurial source control system). Use apt-get install mercurial git or yum install mercurial git on Linux, or brew.sh on OS X, or download them directly.

go get -u github.com/Masterminds/glide
go get github.com/sgotti/glide-vc

Check that glide and glide-vc commands are working.

glide --version
glide-vc -h

Using glide

Adding new dependency

  1. Update glide.yml file.

Add new packages or subpackages to glide.yml depending if you added whole new package as dependency or just new subpackage.

  1. Run glide update --strip-vendor to get new dependencies. Then run glide-vc --only-code --no-tests to delete all unnecessary files from vendor.

  2. Commit updated glide.yml, glide.lock and vendor to git.

Updating dependencies

  1. Set new package version in glide.yml file.

  2. Run glide update --strip-vendor to update dependencies. Then run glide-vc --only-code --no-tests to delete all unnecessary files from vendor.

Updating Kubernetes and OpenShift

Kubernetes version depends on what version is OpenShift using. OpenShift is using forked Kubernetes to carry some patches. Currently it is not possible to use different Kubernetes version from version that OpenShift uses. (for more see comments in glide.yml)

Adding CLI tests

Kompose CLI tests run kompose convert with docker-compose files, and cross-check the k8s and OpenShift artifacts generated with the template files.

To generate CLI tests, please run make gen-cmd.

CI

For Kompose, we use numerous CI's: