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CONTRIBUTING.md

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Contributing

Overview

This documents explains the processes and practices recommended for contributing enhancements to this operator.

  • Generally, before developing enhancements to this charm, you should consider opening an issue explaining your use case.
  • If you would like to chat with us about your use-cases or proposed implementation, you can reach us at Canonical Mattermost public channel or Discourse.
  • Familiarising yourself with the Charmed Operator Framework library will help you a lot when working on new features or bug fixes.
  • All enhancements require review before being merged. Code review typically examines
    • code quality
    • test coverage
    • user experience for Juju administrators this charm.
  • Please help us out in ensuring easy to review branches by rebasing your pull request branch onto the main branch. This also avoids merge commits and creates a linear Git commit history.

Developing

Environment set up

This operator charm can be deployed locally using Juju on a localhost LXD cloud. If you do not already have a Juju controller bootstrapped, you can set one up by doing the following:

# install requirements
sudo snap install charmcraft --classic
sudo snap install lxd
sudo snap install juju --classic

# configure lxd
sudo adduser $USER lxd
newgrp lxd
lxd init --auto
lxc network set lxdbr0 ipv6.address none

# bootstrap controller to lxd
juju clouds
juju bootstrap localhost overlord

Clone this repository:

git clone https://github.com/canonical/mysql-router-operator.git
cd mysql-router-operator

Install tox, poetry, and charmcraftcache

Install pipx: https://pipx.pypa.io/stable/installation/

pipx install tox
pipx install poetry
pipx install charmcraftcache

You can create an environment for development:

poetry install

Testing

tox run -e format        # update your code according to linting rules
tox run -e lint          # code style
tox run -e unit          # unit tests
tox run -e integration   # integration tests
tox                      # runs 'lint' and 'unit' environments

Build charm

Build the charm in this git repository using:

charmcraftcache pack

Deploy

# Create a model
juju add-model dev
# Enable DEBUG logging
juju model-config logging-config="<root>=INFO;unit=DEBUG"
# Deploy the charm
juju deploy ./mysqlrouter-operator_ubuntu-20.04-amd64.charm

Canonical Contributor Agreement

Canonical welcomes contributions to the Charmed MySQL-Router Operator. Please check out our contributor agreement if you're interested in contributing to the solution.