364 lines
12 KiB
Markdown
364 lines
12 KiB
Markdown
# quay
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:warning: The `master` branch may be in an *unstable or even broken state* during development.
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Please use [releases] instead of the `master` branch in order to get stable binaries.
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Quay is project to build, store, and distribute container images.
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High-level features include:
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- Docker Registry Protocol [v1], [v2]
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- Docker Manifest Schema [v2.1]
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- [AppC Image Discovery] via on-demand transcoding
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- Image Squashing via on-demand transcoding
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- Authentication provided by [LDAP], [Keystone], [Dex], [Google], [GitHub]
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- ACLs, team management, and auditability logs
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- Geo-replicated storage provided by local filesystems, [S3], [GCS], [Swift], [Ceph]
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- Continuous Integration integrated with [GitHub], [Bitbucket], [GitLab], and [git]
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- Security Vulnerability Analysis via [Clair]
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- [Swagger]-compliant HTTP API
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[releases]: https://github.com/coreos-inc/quay/releases
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[v1]: https://docs.docker.com/v1.6/reference/api/registry_api/
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[v2]: https://docs.docker.com/v1.6/registry/
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[v2.1]: https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-1.md
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[AppC Image Discovery]: https://github.com/appc/spec/blob/master/spec/discovery.md
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[LDAP]: https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol
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[Keystone]: http://docs.openstack.org/developer/keystone
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[Dex]: https://github.com/coreos/dex
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[Google]: https://developers.google.com/identity/sign-in/web/sign-in
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[GitHub]: https://developer.github.com/v3/oauth
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[S3]: https://aws.amazon.com/s3
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[GCS]: https://cloud.google.com/storage
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[Swift]: http://swift.openstack.org
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[Ceph]: http://docs.ceph.com/docs/master/radosgw/config
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[GitHub]: https://github.com
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[Bitbucket]: https://bitbucket.com
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[GitLab]: https://gitlab.com
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[git]: https://git-scm.com
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[Clair]: https://github.com/coreos/clair
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[Swagger]: http://swagger.io
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## Table of Contents
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1. **[Getting Started](#getting-started)**
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1. [macOS](#macos)
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3. [Linux](#linux)
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2. **[Development](#development)**
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1. [PivotalTracker Integration](#pivotaltracker-integration)
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3. **[Running and Testing](#running-and-testing)**
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1. [Test Data](#test-data)
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2. [Local Scripts](#local-scripts)
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3. [Development inside Docker](#development-inside-docker)
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4. [Adding a Python Dependency](#adding-a-python-dependency)
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5. [Running the Build System](#running-the-build-system)
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6. [To run individual tests](#to-run-individual-tests)
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1. [Pytest](#pytest)
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2. [Tox](#tox)
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7. [Running Migrations](#running-migrations)
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8. [How to run a build with tests for a push or merge](#how-to-run-a-build-with-tests-for-a-push-or-merge)
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4. **[Documentation](#documentation)**
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1. [Architecture at a Glance](#architecture-at-a-glance)
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2. [Terminology](#terminology)
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1. [Organizations](#organizations)
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2. [Concepts](#concepts)
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3. [Software](#software)
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## Getting Started
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### macOS
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macOS developers will need:
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* [command line tools] or [xcode]
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* [brew]
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[command line tools]: https://developer.apple.com/downloads
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[xcode]: https://developer.apple.com/downloads
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[brew]: https://github.com/Homebrew/brew
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```
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# Download the code
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git clone git@github.com:coreos-inc/quay.git && cd quay
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# Install the system dependencies
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brew install libevent libmagic postgresql gpgme pyenv pyenv-virtualenv docker docker-machine node
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# create a default virtualmachine for docker
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docker-machine create -d virtualbox default
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# setup brew dependencies
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# note you may want to add these to your bashrc or zshrc file
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eval "$(pyenv virtualenv-init -)"
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eval "$(pyenv init -)"
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eval $(/usr/local/bin/docker-machine env default)
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# Some installs don't have /usr/include, required for finding SASL header files
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# http://apple.stackexchange.com/questions/196224/unix-ln-s-command-not-permitted-in-osx-el-capitan-beta3
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# note this command might fail because of new OSx write protections here above is a link that explains
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# how to fix that
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if [ ! -e /usr/include ]; then sudo ln -s `xcrun --show-sdk-path`/usr/include /usr/include; fi
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# Install the Python dependencies
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pyenv install 2.7.11
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pyenv virtualenv 2.7.11 quay
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pyenv activate quay
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# Some packages may fail to build with clang (which now defaults to C11).
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CFLAGS='-std=c99' pip install -r requirements.txt
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pip install -r requirements-dev.txt
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# Setup a local config
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git clone git@github.com:coreos-inc/quay-config.git ../quay-config
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ln -s ../../quay-config/local conf/stack
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# Install Node Dependencies
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npm install
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# Link Typescript
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npm link typescript
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```
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#### Useful docs
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* [docker](https://beta.docker.com/docs/mac/getting-started://beta.docker.com/docs/mac/getting-started)
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* [docker-machine](https://docs.docker.com/machine/install-machine://docs.docker.com/machine/install-machine)
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* [pyenv](https://github.com/yyuu/pyenv)
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* [pyenv-virtualenv](https://github.com/yyuu/pyenv-virtualenv)
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### Linux
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TODO
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## Development
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### PivotalTracker Integration
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Tag a commit with the Tracker Story ID and GitHub automatically comments on your
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story with the commit message.
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Add the following at the end of your commit message:
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```
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[(Finishes|Fixes|Delivers) #TRACKER_STORY_ID]
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```
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When you push to GitHub, the post-receive hook will then call back to Tracker
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and put a comment on the story with a link to the commit on GitHub. When tagged
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with "Finishes", the trigger will also click Finish on the story.
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Reference: PivotalTracker blog - [A Guide to GitHub’s Service Hook for Tracker](https://www.pivotaltracker.com/blog/guide-githubs-service-hook-tracker/)
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## Running and Testing
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### Test Data
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A SQLite database full of test data is committed to this git repository at [test/data/test.db](quay/test/data/test.db).
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This database is generated by executing `python initdb.py`.
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The username and password of the admin test account is `devtable` and `password`, respectively.
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### Local Scripts
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Running the web server locally requires [goreman](https://github.com/mattn/goreman):
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```
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go get github.com/mattn/goreman
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```
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* `local-run` runs the web server for testing
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* `local-test` runs the unit test suite
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* `npm run build` builds front end dependencies
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* `npm run watch` a watcher for webpack
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### Development inside Docker
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To build and run a development container, pass one argument to [local-docker.sh](quay/local-docker.sh):
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- `buildman`: run the buildmanager
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- `dev`: run web server on port 5000
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- `initdb`: clear and initialize the test database
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- `notifications`: run the notification worker
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- `test`: run the unit test suite
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### Adding a Python Dependency
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```
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# Create a new virtualenv and activate it
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pyenv virtualenv 2.7.11 quay-deps
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pyenv activate quay-deps
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# Install unversioned dependencies with your changes
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pip install -r requirements-nover.txt
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# Run the unit test suite
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./local-test.sh
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# Freeze the versions of all of the dependencies
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pip freeze > requirements.txt
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```
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### Running the Build System
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TODO
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```
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# Run an instance of redis
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docker run -d -p 6379:6379 quay.io/quay/redis
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```
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### To run individual tests
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```
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# To run a specific suite
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TEST=true python -m test.test_api_usage -f
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# To run a specific test in a suite
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TEST=true python -m test.test_api_usage -f SuiteName
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```
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#### Pytest
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```
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# To run all tests
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TEST=true PYTHONPATH="." py.test --verbose
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# To run a specific test module
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TEST=true PYTHONPATH="." py.test --verbose test/registry_tests.py
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# To run a specific test unique test
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TEST=true PYTHONPATH="." py.test --verbose test/test_api_usage.py::TestDeleteNamespace
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# To retry only last failed (--lf):
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TEST=true PYTHONPATH="." py.test --verbose --lf
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# To start pdb on failure:
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TEST=true PYTHONPATH="." py.test --verbose --pdb
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# To run a coverage report (html pages in ./htmlcov):
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TEST=true PYTHONPATH="." py.test --cov="." --cov-report=html --cov-report=term-missing --cov-config=.coverage.ini --verbose
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# Don't capture stdout (-s)
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TEST=true PYTHONPATH="." py.test --verbose -s
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```
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#### Tox
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To create a virtualenv to run the tests.
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It allows to test the code on multiple env like python2.x and python3.x or different library versions
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```
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# Test all tox env:
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tox
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# Add extra parameters to the pytest command:
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# tox -- [pytest ARGS]
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tox -- -x
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# build a single env with -e:
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tox -e py27-api
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```
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### Running migrations
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```
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# To create a new migration with this description.
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# Note there might be some errors about unique id being to long
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# That's okay as long as the migration file is created
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./data/migrations/migration.sh "Description goes here"
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# To test the up and down of the migration
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./data/migrations/migration.sh # without params
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# Migrations get run when you create a docker image or you can run them
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# manually with the following command.
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PYTHONPATH=. alembic upgrade head
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# You can also rebuild your local sqlite db image from initdb.py using
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# And once you have a migration you should do this and check in the
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# changes to share your migration with others.
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rm test/data/test.db
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python initdb.py
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```
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### Running tests for migrations
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Use AWS/RDS to create a test image.
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To create a new database from a snapshot to test against see
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[this](http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_RestoreFromSnapshot.html).
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Then point the migrations to the new instance using
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quay-config/local/config.yaml
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Remember to run this from the root of the quay directory and to set your
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python environment first.
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```
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PYTHONPATH=. alembic upgrade head
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```
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### How to run a build with tests for a push or merge
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```
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# Inside the quay directory.
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export QUAY_TAG=quay.io/quay/quay:localtest
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docker build -t $QUAY_TAG --build-arg RUN_TESTS=true .
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```
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## Documentation
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* [Quay Enterprise Documentation](https://tectonic.com/quay-enterprise/docs/latest)
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* [Quay.io Documentation](https://docs.quay.io)
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### Architecture at a Glance
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<img src="https://docs.google.com/a/coreos.com/drawings/d/1J-YZs7aun1lLy-1wFwIZcBma5IJmZQ8WfgtEftHCKJ0/pub?w=640&h=480">
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Edit chart on Google Docs at [Architecture at a Glance](https://docs.google.com/a/coreos.com/drawings/d/1J-YZs7aun1lLy-1wFwIZcBma5IJmZQ8WfgtEftHCKJ0/edit?usp=sharing).
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### Terminology
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#### Organizations
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- **AppC**: a standards body responsible for a _Runtime_ and _Image Format_ superseded by the _Open Container Initiative_
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- **Open Container Initiative**: a standards body responsible for a _Runtime_ specification and an _Image Format_
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- **Docker**: a company that builds a platform that has its own _Image Formats_, _Build System_, _Container Runtime_, and _Container Orchestration_
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#### Concepts
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- **Image**: an archive containing all of the contents necessary to execute a container
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- **Image Format**: a specification for the structure of an _Image_
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- **Image Layer**: an _Image_ that may depend on being applied to other _Images_ to generate a final _Image_
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- **Image Squashing**: the process of compressing an _Image_ into a single _Layer_
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- **Manifest**: a text file containing metadata for a particular _Image_
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- **Tag**: a human-friendly named, mutable pointer to a particular set of _Images_
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- **Build System**: a program used to generate _Images_
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- **Registry**: a program that speaks one or more standard protocols to store and receive _Images_
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- **Repository**: a collection of related _Tags_ organized by a _Registry_
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- **Push**: the act of uploading an _Image_ to a _Registry_
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- **Pull**: the act of downloading an _Image_ from a _Registry_
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- **Container**: an _Image_ and its execution environment
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- **Container Runtime**: a program that can transform an _Image_ into a _Container_ by executing it
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- **Container Orchestration**: a program or set of programs that provides a framework for deploying _Containers_
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#### Software
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- **Quay.io**: CoreOS's hosted _Registry_
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- **Quay**: CoreOS's enterprise-grade _Registry_ product
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- **quayctl**: an open source program that implements alternative methods for _pulling_ _Images_ from _Quay_
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- **Clair**: an open source static analysis tool used to detect vulnerability in _Images_
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- **Quay Security Scanning**: the integration between _Clair_ and _Quay_
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- **Kubernetes**: an open source program implementing _Container Orchestration_
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- **Docker Hub**: Docker's hosted _Registry_
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- **Docker Trusted Registry**: Docker's enterprise-grade _Registry_ product
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- **Notary**: an open source implementation of the TUF protocol used in _Docker Content Trust_
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- **Docker Content Trust**: the integration between _Notary_ and _Docker Trusted Registry_
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- **Docker Engine**: a program used to interact with all aspects of the Docker platform
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- **Swarm**: a program implementing _Container Orchestration_ for the Docker platform
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