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Contributing

Introduction

We appreciate your interest in considering contributing to redis-py. Community contributions mean a lot to us.

Contributions we need

You may already know how you'd like to contribute, whether it's a fix for a bug you encountered, or a new feature your team wants to use.

If you don't know where to start, consider improving documentation, bug triaging, and writing tutorials are all examples of helpful contributions that mean less work for you.

Your First Contribution

Unsure where to begin contributing? You can start by looking through help-wanted issues.

Never contributed to open source before? Here are a couple of friendly tutorials:

Getting Started

Here's how to get started with your code contribution:

  1. Create your own fork of redis-py

  2. Do the changes in your fork

  3. Create a virtualenv and install the development dependencies from the dev_requirements.txt file:

     a.  python -m venv .venv
 b.  source .venv/bin/activate
 c.  pip install -r dev_requirements.txt
 c.  pip install -r requirements.txt

  4. If you need a development environment, run invoke devenv. Note: this relies on docker-compose to build environments, and assumes that you have a version supporting docker profiles.

  5. While developing, make sure the tests pass by running invoke tests

  6. If you like the change and think the project could use it, send a pull request

To see what else is part of the automation, run invoke -l

The Development Environment

Running invoke devenv installs the development dependencies specified in the dev_requirements.txt. It starts all of the dockers used by this project, and leaves them running. These can be easily cleaned up with invoke clean. NOTE: it is assumed that the user running these tests, can execute docker and its various commands.

  • A master Redis node
  • A Redis replica node
  • Three sentinel Redis nodes
  • A redis cluster
  • An stunnel docker, fronting the master Redis node

The replica node, is a replica of the master node, using the leader-follower replication feature.

The sentinels monitor the master node in a sentinel high-availability configuration.

Testing

Call invoke tests to run all tests, or invoke all-tests to run linters tests as well. With the 'tests' and 'all-tests' targets, all Redis and RedisCluster tests will be run.

It is possible to run only Redis client tests (with cluster mode disabled) by using invoke standalone-tests; similarly, RedisCluster tests can be run by using invoke cluster-tests.

Each run of tests starts and stops the various dockers required. Sometimes things get stuck, an invoke clean can help.

Documentation

If relevant, update the code documentation, via docstrings, or in /docs.

You can check how the documentation looks locally by running invoke build-docs and loading the generated HTML files in a browser.

Historically there is a mix of styles in the docstrings, but the preferred way of documenting code is by applying the Google style. Type hints should be added according to PEP484, and should not be repeated in the docstrings.

Docker Tips

Following are a few tips that can help you work with the Docker-based development environment.

To get a bash shell inside of a container:

$ docker run -it <service> /bin/bash

Containers run a minimal Debian image that probably lacks tools you want to use. To install packages, first get a bash session (see previous tip) and then run:

$ apt update && apt install <package>

You can see the logging output of a containers like this:

$ docker logs -f <service>

Troubleshooting

If you get any errors when running make dev or make test, make sure that you are using supported versions of Docker.

Please try at least versions of Docker.

  • Docker 19.03.12

How to Report a Bug

Security Vulnerabilities

NOTE: If you find a security vulnerability, do NOT open an issue. Email Redis Open Source (oss@redis.com) instead.

In order to determine whether you are dealing with a security issue, ask yourself these two questions:

  • Can I access something that's not mine, or something I shouldn't have access to?
  • Can I disable something for other people?

If the answer to either of those two questions are yes, then you're probably dealing with a security issue. Note that even if you answer no to both questions, you may still be dealing with a security issue, so if you're unsure, just email us.

Everything Else

When filing an issue, make sure to answer these five questions:

  1. What version of redis-py are you using?
  2. What version of redis are you using?
  3. What did you do?
  4. What did you expect to see?
  5. What did you see instead?

Suggest a feature or enhancement

If you'd like to contribute a new feature, make sure you check our issue list to see if someone has already proposed it. Work may already be underway on the feature you want or we may have rejected a feature like it already.

If you don't see anything, open a new issue that describes the feature you would like and how it should work.

Code review process

The core team regularly looks at pull requests. We will provide feedback as soon as possible. After receiving our feedback, please respond within two weeks. After that time, we may close your PR if it isn't showing any activity.