Arvados

h1. Hacking Python SDK

{{toc}}

h2. Prerequisites

The FUSE driver requires associated libraries to build:

<pre>

sudo apt-get install libattr1-dev libfuse-dev pkg-config fuse

sudo adduser "$USER" fuse

sudo chmod g+rw /dev/fuse

sudo chown root:fuse /dev/fuse

</pre>

After installing @fuse@ and adding yourself to the @fuse@ group, you need to start a new login session. Make sure the @groups@ command reports that you're in the @fuse@ group.

h2. Get the source code

<pre>

cd

git clone https://github.com/curoverse/arvados.git

</pre>

h2. virtualenv

virtualenv helps you isolate the dependencies for a specific package or environment, much like Bundler does for our Rails applications.  The recommended way to deploy is to build a virtualenv for Arvados development.

To build the virtualenv, run:

<pre>

$ virtualenv --setuptools VENVDIR

</pre>

(@VENVDIR@ can be a directory anywhere you like, although best practice is to keep it outside your source directory.)

To set up the shell to use the isolated virtualenv environment, run:

<pre>

$ source VENVDIR/bin/activate

</pre>

To learn more about using and configuring virtualenv, read the "virtualenv usage documentation":https://virtualenv.pypa.io/en/latest/virtualenv.html#usage.

h2. Run tests

Strategy:

# Set up the environment to use a dedicated virtualenv

# Run the client library test suite

# Build a client library package and install it to the virtualenv

# Run the FUSE driver test suite

# Build a FUSE driver package and install it to the virtualenv

Note: The test suite brings up a Keep server and an API server to run tests against. For best results:

* Try [[Hacking Keep]] and [[Hacking API Server]] to make sure you have all the right dependencies for running the Keep and API servers.

* Make sure you have a blob_signing_key in services/api/config/application.yml

Script (make sure to edit the first line to refer to your virtualenv):

<pre>

source VENVDIR/bin/activate

cd ~/arvados/sdk/python

GOPATH="$HOME/gocode" python setup.py test

python setup.py egg_info -b ".$(git log --format=format:%ct.%h -n1 .)" sdist rotate --keep=1 --match .tar.gz

pip install dist/arvados-python-client-0.1.*.tar.gz

cd ~/arvados/services/fuse

GOPATH="$HOME/gocode" python setup.py test

python setup.py egg_info -b ".$(git log --format=format:%ct.%h -n1 .)" sdist rotate --keep=1 --match .tar.gz

pip install dist/arvados_fuse-0.1.*.tar.gz

</pre>