sahara/doc/source/contributor/development-environment.rst

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Setting Up a Development Environment
====================================
This page describes how to setup a Sahara development environment by either
installing it as a part of DevStack or pointing a local running instance at an
external OpenStack. You should be able to debug and test your changes without
having to deploy Sahara.
Setup a Local Environment with Sahara inside DevStack
-----------------------------------------------------
See :doc:`the main article <devstack>`.
Setup a Local Environment with an external OpenStack
----------------------------------------------------
1. Install prerequisites
On OS X Systems:
.. sourcecode:: console
# we actually need pip, which is part of python package
$ brew install python mysql postgresql rabbitmq
$ pip install virtualenv tox
On Ubuntu:
.. sourcecode:: console
$ sudo apt-get update
$ sudo apt-get install git-core python-dev python-virtualenv gcc libpq-dev libmysqlclient-dev python-pip rabbitmq-server
$ sudo pip install tox
On Red Hat and related distributions (CentOS/Fedora/RHEL/Scientific Linux):
.. sourcecode:: console
$ sudo yum install git-core python-devel python-virtualenv gcc python-pip mariadb-devel postgresql-devel erlang
$ sudo pip install tox
$ sudo wget http://www.rabbitmq.com/releases/rabbitmq-server/v3.2.2/rabbitmq-server-3.2.2-1.noarch.rpm
$ sudo rpm --import http://www.rabbitmq.com/rabbitmq-signing-key-public.asc
$ sudo yum install rabbitmq-server-3.2.2-1.noarch.rpm
On openSUSE-based distributions (SLES 12, openSUSE, Factory or Tumbleweed):
.. sourcecode:: console
$ sudo zypper in gcc git libmysqlclient-devel postgresql-devel python-devel python-pip python-tox python-virtualenv
2. Grab the code
.. sourcecode:: console
$ git clone https://opendev.org/openstack/sahara.git
$ cd sahara
3. Generate Sahara sample using tox
.. sourcecode:: console
tox -e genconfig
4. Create config file from the sample
.. sourcecode:: console
$ cp ./etc/sahara/sahara.conf.sample ./etc/sahara/sahara.conf
5. Look through the sahara.conf and modify parameter values as needed
For details see
:doc:`Sahara Configuration Guide <../admin/configuration-guide>`
6. Create database schema
.. sourcecode:: console
$ tox -e venv -- sahara-db-manage --config-file etc/sahara/sahara.conf upgrade head
7. To start Sahara API and Engine processes call
.. sourcecode:: console
$ tox -e venv -- sahara-api --config-file etc/sahara/sahara.conf --debug
$ tox -e venv -- sahara-engine --config-file etc/sahara/sahara.conf --debug
Setup local OpenStack dashboard with Sahara plugin
--------------------------------------------------
.. toctree::
:maxdepth: 1
dashboard-dev-environment-guide
Tips and tricks for dev environment
-----------------------------------
1. Pip speedup
Add the following lines to ~/.pip/pip.conf
.. sourcecode:: cfg
[global]
download-cache = /home/<username>/.pip/cache
index-url = <mirror url>
Note that the ``~/.pip/cache`` folder should be created manually.
2. Git hook for fast checks
Just add the following lines to .git/hooks/pre-commit and do chmod +x for it.
.. sourcecode:: console
#!/bin/sh
# Run fast checks (PEP8 style check and PyFlakes fast static analysis)
tox -epep8
You can add also other checks for pre-push, for example pylint (see below)
and tests (tox -epy27).
3. Running static analysis (PyLint)
Just run the following command
.. sourcecode:: console
tox -e pylint