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Merge "Updates Development Environment Docs"

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      doc/source/devref/development.environment.rst

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doc/source/devref/development.environment.rst

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under the License.
=============================================
Setting up a Keystone development environment
Setting up a keystone development environment
=============================================
This document describes getting the source from keystone's `Git repository`_
for development purposes.
This document describes getting the source from keystone's `Git Repository`_
and setting the environment up for development purposes.
To install Keystone from packaging, refer instead to Keystone's `User
To install keystone from packaging, refer instead to OpenStack's `User
Documentation`_.
.. _`Git Repository`: http://git.openstack.org/cgit/openstack/keystone
@ -30,146 +30,50 @@ Documentation`_.
Prerequisites
=============
This document assumes you are using Ubuntu, Fedora or openSUSE (SLE)
This document assumes you are using an Ubuntu, Fedora, or openSUSE platform and
that you have the following tools pre-installed on your system:
And that you have the following tools available on your system:
- Python_ 2.7 and 3.4, as the programming language;
- git_, as the version control tool;
- Python_ 2.7 and 3.4
- git_
- setuptools_
- pip_
- msgfmt (part of the gettext package)
- virtualenv_
- tox_
**Reminder**: If you're successfully using a different platform, or a
**Reminder**: If you are successfully using a different platform, or a
different version of the above, please document your configuration here!
.. _Python: http://www.python.org/
.. _git: http://git-scm.com/
.. _setuptools: http://pypi.python.org/pypi/setuptools
.. _tox: https://pypi.python.org/pypi/tox
.. _Python: http://www.python.org/
Getting the latest code
=======================
Make a clone of the code from our `Git repository`:
Make a clone of the code from our git repository and enter the directory:
.. code-block:: bash
$ git clone https://git.openstack.org/openstack/keystone.git
When that is complete, you can:
.. code-block:: bash
$ cd keystone
Installing dependencies
Development environment
=======================
Keystone maintains two lists of dependencies::
requirements.txt
test-requirements.txt
The first is the list of dependencies needed for running keystone, the second list includes dependencies used for active development and testing of Keystone itself.
These dependencies can be installed from PyPi_ using the Python tool pip_.
.. _PyPi: http://pypi.python.org/
.. _pip: http://pypi.python.org/pypi/pip
However, your system *may* need additional dependencies that `pip` (and by
extension, PyPi) cannot satisfy. These dependencies should be installed
prior to using `pip`, and the installation method may vary depending on
your platform.
Ubuntu 14.04, 15.10, 16.04:
.. code-block:: bash
$ sudo apt-get install python-dev python3-dev libxml2-dev libxslt1-dev \
libsasl2-dev libsqlite3-dev libssl-dev libldap2-dev libffi-dev \
libpq-dev
Fedora 19+:
.. code-block:: bash
$ sudo yum install python-lxml python-greenlet-devel python-ldap \
sqlite-devel openldap-devel python-devel libxslt-devel \
openssl-devel libffi-devel postgresql-libs
openSUSE 13.2 (SLE 12):
.. code-block:: bash
$ sudo zypper install libxslt-devel openldap2-devel libopenssl-devel \
python-devel python-greenlet-devel python-ldap python-lxml \
python-pysqlite sqlite3-devel libpq-devel
For setting up the Python development environment and running `tox` testing
environments, please refer to the `Project Team Guide: Python Project Guide`_,
the OpenStack guide on wide standard practices around the use of Python.
PyPi Packages and VirtualEnv
----------------------------
We recommend establishing a virtualenv to run Keystone within. virtualenv
limits the Python environment to just what you're installing as dependencies,
useful to keep a clean environment for working on Keystone.
.. code-block:: bash
$ tox -e venv --notest
This will create a local virtual environment in the directory ``.tox``.
Once created, you can activate this virtualenv for your current shell using:
.. code-block:: bash
$ source .tox/venv/bin/activate
The virtual environment can be disabled using the command:
.. code-block:: bash
$ deactivate
You can also use ``tox -e venv`` to prefix commands so that they run
within the virtual environment. For more information on virtual environments,
see virtualenv_.
That documentation will guide you to configure your development environment
and run keystone tests using `tox`, which uses virtualenv_ to isolate the Python
environment. After running it, notice the existence of a `.tox` directory.
.. _`Project Team Guide: Python Project Guide`: http://docs.openstack.org/project-team-guide/project-setup/python.html
.. _virtualenv: http://www.virtualenv.org/
If you want to run Keystone outside of a virtualenv, you can install the
dependencies directly into your system from the requirements files:
.. code-block:: bash
# Install the dependencies for running keystone
$ pip install -r requirements.txt
# Install the dependencies for developing, testing, and running keystone
$ pip install -r test-requirements.txt
# Use 'python setup.py' to link Keystone into Python's site-packages
$ python setup.py develop
Verifying Keystone is set up
Verifying keystone is set up
============================
Once set up, either directly or within a virtualenv, you should be able to
invoke Python and import the libraries. If you're using a virtualenv, don't
forget to activate it:
.. code-block:: bash
$ source .tox/venv/bin/activate
You should then be able to `import keystone` using Python without issue:
Once set up, you should be able to invoke Python and import the libraries:
.. code-block:: bash
$ python -c "import keystone"
$ .tox/py27/bin/python -c "import keystone"
If you can import Keystone without a traceback, you should be ready to move on
If you can import keystone without a traceback, you should be ready to move on
to :doc:`../developing`.

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