Dockerize (#1365)

Provide a docker development and testing environment

* CI (Travis) now runs tests via the same docker environment that is available to developers.
* A simple Makefile has been added to make getting started easier.
    * `make dev` will standup the development environment.
    * `make test` will standup the development environment and also run the test suite.
    * `make clean` will remove the development environment.

.coveragerc

@@ -0,0 +1,2 @@
+[run]
+source = redis

.dockerignore

@@ -0,0 +1,3 @@
+**/__pycache__
+**/*.pyc
+.tox

.gitignore

@@ -11,3 +11,6 @@ vagrant/.vagrant
 .eggs
 .idea
 .coverage
+env
+venv
+coverage.xml

.travis.yml

@@ -1,42 +1,14 @@
-language: python
-cache: pip
-matrix:
-  include:
-    - env: TOXENV=flake8
-    - python: 2.7
-      env: TOXENV=py27-plain
-    - python: 2.7
-      env: TOXENV=py27-hiredis
-    - python: 3.5
-      env: TOXENV=py35-plain
-    - python: 3.5
-      env: TOXENV=py35-hiredis
-    - python: 3.6
-      env: TOXENV=py36-plain
-    - python: 3.6
-      env: TOXENV=py36-hiredis
-    - python: 3.7
-      env: TOXENV=py37-plain
-    - python: 3.7
-      env: TOXENV=py37-hiredis
-    - python: 3.8
-      env: TOXENV=py38-plain
-    - python: 3.8
-      env: TOXENV=py38-hiredis
-    - python: pypy
-      env: TOXENV=pypy-plain
-    - python: pypy
-      env: TOXENV=pypy-hiredis
-    - python: pypy3
-      env: TOXENV=pypy3-plain
-    - python: pypy3
-      env: TOXENV=pypy3-hiredis
+env:
+  - DOCKER_COMPOSE_VERSION=1.26.2
+
 before_install:
-  - wget https://github.com/antirez/redis/archive/6.0.5.tar.gz && mkdir redis_install && tar -xvzf 6.0.5.tar.gz -C redis_install && cd redis_install/redis-6.0.5 && make && src/redis-server --daemonize yes && cd ../..
-  - redis-cli info
-install:
-  - pip install codecov tox
+  - sudo rm /usr/local/bin/docker-compose
+  - curl -L https://github.com/docker/compose/releases/download/${DOCKER_COMPOSE_VERSION}/docker-compose-`uname -s`-`uname -m` > docker-compose
+  - chmod +x docker-compose
+  - sudo mv docker-compose /usr/local/bin
+
+services:
+  - docker
+
 script:
-  - tox
-after_success:
-  - "if [[ $TOXENV != 'flake8' ]]; then codecov; fi"
+  - make test

CHANGES

@@ -1,3 +1,6 @@
+* (in development)
+    * Provide a development and testing environment via docker. Thanks
+      @abrookins. #1365
 * 3.5.3 (June 1, 2020)
     * Restore try/except clauses to __del__ methods. These will be removed
       in 4.0 when more explicit resource management if enforced. #1339

CONTRIBUTING.rst

@@ -0,0 +1,128 @@
+Contributing
+============
+
+Introduction
+------------
+
+First off, thank you for considering contributing to redis-py. We value community contributions!
+
+Contributions We Need
+----------------------
+
+You may already know what you want to contribute -- a fix for a bug you encountered, or a new feature your team wants to use.
+
+If you don't know what to contribute, keep an open mind! 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 <https://github.com/andymccurdy/redis-py/issues?q=is%3Aopen+is%3Aissue+label%3ahelp-wanted>`_.
+
+Never contributed to open source before? Here are a couple of friendly tutorials:
+
+- http://makeapullrequest.com/
+- http://www.firsttimersonly.com/
+
+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. If you need a development environment, run ``make dev``
+4. While developing, make sure the tests pass by running ``make test``
+5. If you like the change and think the project could use it, send a pull request
+
+The Development Environment
+---------------------------
+
+Running ``make dev`` will create a Docker-based development environment that starts the following containers:
+
+* A master Redis node
+* A slave Redis node
+* Three sentinel Redis nodes
+* A test container
+
+The slave is a replica of the master node, using the `leader-follower replication <https://redis.io/topics/replication>`_ feature.
+
+The sentinels monitor the master node in a `sentinel high-availability configuration <https://redis.io/topics/sentinel>`_.
+
+Meanwhile, the `test` container hosts the code from your checkout of ``redis-py`` and allows running tests against many Python versions.
+
+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-compose run <service> /bin/bash``
+
+**Note**: The term "service" refers to the "services" defined in the ``docker-compose.yml`` file: "master", "slave", "sentinel_1", "sentinel_2", "sentinel_3", "test".
+
+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 combined logging output of all containers like this:
+
+``$ docker-compose logs``
+
+The command `make test` runs all tests in all tested Python environments. To run the tests in a single environment, like Python 3.6, use a command like this:
+
+``$ docker-compose run test tox -e py36 -- --redis-url=redis://master:6379/9``
+
+Here, the flag ``-e py36`` runs tests against the Python 3.6 tox environment. And note from the example that whenever you run tests like this, instead of using `make test`, you need to pass ``-- --redis-url=redis://master:6379/9``. This points the tests at the "master" container.
+
+Our test suite uses ``pytest``. You can run a specific test suite against a specific Python version like this:
+
+``$ docker-compose run test tox -e py36 -- --redis-url=redis://master:6379/9 tests/test_commands.py``
+
+Troubleshooting
+^^^^^^^^^^^^^^^
+If you get any errors when running ``make dev`` or ``make test``, make sure that you
+are using supported versions of Docker and docker-compose.
+
+The included Dockerfiles and docker-compose.yml file work with the following
+versions of Docker and docker-compose:
+
+* Docker 19.03.12
+* docker-compose 1.26.2
+
+How to Report a Bug
+-------------------
+
+Security Vulnerabilities
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+**NOTE**: If you find a security vulnerability, do NOT open an issue. Email Andy McCurdy (sedrik@gmail.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 Andy at sedrik@gmail.com.
+
+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?
+
+How to 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 under way 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 looks at Pull Requests on a regular basis. We will give feedback as as soon as possible. After feedback, we expect a response within two weeks. After that time, we may close your PR if it isn't showing any activity.

Dockerfile

@@ -0,0 +1,7 @@
+FROM fkrull/multi-python:latest
+
+RUN apt update && apt install -y pypy pypy-dev pypy3-dev
+
+WORKDIR /redis-py
+
+COPY . /redis-py

Makefile

@@ -0,0 +1,14 @@
+.PHONY: base clean dev test
+
+base:
+		docker build -t redis-py-base docker/base
+
+dev:	base
+		docker-compose up -d --build
+
+test:	dev
+		docker-compose run --rm test /redis-py/docker-entry.sh
+
+clean:
+		docker-compose stop
+		docker-compose rm -f

README.rst

@@ -47,6 +47,12 @@ or from source:
 
     $ python setup.py install
 
+Contributing
+------------
+
+Want to contribute a feature, bug report, or report an issue? Check out our `guide to
+contributing <https://github.com/andymccurdy/redis-py/blob/master/CONTRIBUTING.rst>`_.
+
 
 Getting Started
 ---------------