ckanext-query-dois

A CKAN extension that creates DOIs for queries on resources.

Overview

This extension creates (mints) digital object identifiers (DOIs) for queries on resources. By recording the query parameters used and the exact version of the data at the time of the query, this allows precise retrieval of the data as it looked when the DOI was minted.

Can be used in conjunction with v5.2+ of ckanext-versioned-datastore.

You will need an account with a DataCite DOI service provider to use this extension.

Installation

Path variables used below:

• $INSTALL_FOLDER (i.e. where CKAN is installed), e.g. /usr/lib/ckan/default
• $CONFIG_FILE, e.g. /etc/ckan/default/development.ini

Installing from PyPI

pip install ckanext-query-dois

Installing from source

1. Clone the repository into the src folder:

   cd $INSTALL_FOLDER/src
   git clone https://github.com/NaturalHistoryMuseum/ckanext-query-dois.git

2. Activate the virtual env:

   . $INSTALL_FOLDER/bin/activate

3. Install via pip:

   pip install $INSTALL_FOLDER/src/ckanext-query-dois

Installing in editable mode

Installing from a pyproject.toml in editable mode (i.e. pip install -e) requires setuptools>=64; however, CKAN 2.9 requires setuptools==44.1.0. See our CKAN fork for a version of v2.9 that uses an updated setuptools if this functionality is something you need.

Post-install setup

1. Add 'query_dois' to the list of plugins in your $CONFIG_FILE:

   ckan.plugins = ... query_dois

2. Install lessc globally:

   npm install -g "less@~4.1"

3. Initialise database tables:

   ckan -c $CONFIG_FILE query-dois initdb

4. Sign up for an account with DataCite and provide the credentials in your configuration.

Configuration

These are the options that can be specified in your .ini config file.

[REQUIRED]

Name	Description	Options
ckanext.query_dois.prefix	Prefix to use for the new DOIs
ckanext.query_dois.datacite_username	Datacite account username
ckanext.query_dois.datacite_password	Datacite account password
ckanext.query_dois.doi_title	Template string for the DOI title: takes count as a format argument
ckanext.query_dois.publisher	DOI publisher name

Other options

Name	Description	Options	Default
ckanext.query_dois.test_mode	Enable/disable using test DOIs (i.e. not creating real DOIs)	True/False	True

Usage

Commands

initdb

Initialises the database table.

1. initdb: initialise the database model

   ckan -c $CONFIG_FILE query-dois initdb

Testing

There is a Docker compose configuration available in this repository to make it easier to run tests. The ckan image uses the Dockerfile in the docker/ folder.

To run the tests against ckan 2.9.x on Python3:

1. Build the required images:

   docker compose build

2. Then run the tests. The root of the repository is mounted into the ckan container as a volume by the Docker compose configuration, so you should only need to rebuild the ckan image if you change the extension's dependencies.

   docker compose run ckan