ckanext-dataproxy

ckanext-dataproxy is CKAN extension that enables previewing data from remote databases via SQLAlchemy. The extension is compatible with datastore by masking the dataproxy resource as a datastore resource so it could be requested via /api/3/action/datastore_search or previewed in-browser with recline-preview.

Usage:

• CKAN 2.2.x
• CKAN 2.5.x

Installation

NB! This module is developed for CKAN v2.2.x and v2.5.x, compatibility with other versions is not ensured

1) Clone this repo

cd /usr/lib/ckan/default/src
git clone https://github.com/cphsolutionslab/ckanext-dataproxy.git
cd ckanext-dataproxy

2) Activate your virtual environment, e.g.

. /usr/lib/ckan/bin/activate

3) Install requirements (It is not required to install drivers for databases you don’t plan to proxy, see the file)

pip install -r requirements.txt

Additional packages may be required to compile the database-specific drivers. For Ubuntu, you may need:

sudo apt-get install build-essential libmysqlclient-dev freetds-dev

4) Install the plugin

python setup.py develop

5) Set the dataproxy secret in your CKAN settings file (e.g. /etc/ckan/default/production.ini)

For example, in the settings file:

# Password for AES256 key generation
ckan.dataproxy.secret = c9f56fdfd12ee615f3d858... # Don't actually use this string, use a random secret.

You can run the following command in your shell to generate a random secret:

echo "import hashlib ; from uuid import uuid4 ; print hashlib.sha256(str(uuid4())).hexdigest()" | python -

Enable on CKAN 2.2.x

Enable the extension by appending dataproxy to ckan.plugins variable in your configuration file:

ckan.plugins = stats text_preview ... dataproxy

Enable on CKAN 2.5.x

Enable the extension by appending dataproxy and dataproxy_view to ckan.plugins variable in your configuration file:

ckan.plugins = stats text_preview ... dataproxy dataproxy_view

Then append dataproxy_view to ckan.views.default_views variable:

ckan.views.default_views = image_view ... dataproxy_view