How to contribute

Overview

This document explains the processes and practices recommended for contributing enhancements to the NetBox 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 Matrix 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 operators of 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.
• Please generate src documentation for every commit. See the section below for more details.

Developing

The code for this charm can be downloaded as follows:

git clone https://github.com/canonical/netbox

You can use the environments created by tox for development:

tox --notest -e unit
source .tox/unit/bin/activate

Testing

Note that the NetBox image needs to be built and pushed to microk8s for the tests to run. They should be tagged as localhost:32000/netbox:latest so that Kubernetes knows how to pull them from the MicroK8s repository. Note that the MicroK8s registry needs to be enabled using microk8s enable registry. More details regarding the OCI images below. The following commands can then be used to run the tests:

• tox: Runs all of the basic checks (lint, unit, static, and coverage-report).
• tox -e fmt: Runs formatting using black and isort.
• tox -e lint: Runs a range of static code analysis to check the code.
• tox -e static: Runs other checks such as bandit for security issues.
• tox -e unit: Runs the unit tests.
• tox -e integration: Runs the integration tests.

Generating src docs for every commit

Run the following command:

echo -e "tox -e src-docs\ngit add charm/src-docs\n" >> .git/hooks/pre-commit
chmod +x .git/hooks/pre-commit

Build charm

Build the charm in this git repository using:

pushd charm && charmcraft pack && popd

For the integration tests (and also to deploy the charm locally), the netbox image is required in the microk8s registry. To enable it:

microk8s enable registry

The following commands import the images in the Docker daemon and push them into the registry:

cd [project_dir] && rockcraft pack
rockcraft.skopeo --insecure-policy copy --dest-tls-verify=false oci-archive:netbox_0.1_amd64.rock docker://localhost:32000/netbox:latest

Deploy

# Create a model
juju add-model netbox-dev
# Enable DEBUG logging
juju model-config logging-config="<root>=INFO;unit=DEBUG"
# Deploy the charm (assuming you're on amd64)
juju deploy ./charm/netbox_ubuntu-22.04-amd64.charm \
  --resource django-app-image=localhost:32000/netbox:latest

Configure NetBox

NetBox requires a Redis integration to work correctly. This can be done with:

juju deploy redis-k8s --channel=latest/edge
juju integrate redis-k8s netbox

NetBox is built using Django. It is necessary to set the allowed hosts for it to work. For development (not recommended for production environments), you can allow all hosts using the configuration option django-allowed-hosts like:

juju config netbox django-allowed-hosts='*'

The NetBox charm requires a postgresql_client interface to work. Thanks to Juju, this can be easily configured with:

juju deploy postgresql-k8s --channel 14/stable --trust
juju wait-for application postgresql-k8s
juju integrate postgresql-k8s netbox

Canonical Contributor Agreement

Canonical welcomes contributions to the NetBox Operator. Please check out our contributor agreement if you’re interested in contributing to the solution.