Blue-Bike to Linked GBFS

Prototype to map authoritative Blue-Bike availability and station data to a Linked Data prototype vocabulary of GBFS. It uses an RML to LDES workflow and exploits GitHub Actions and GitHub pages to re-publish the data as Linked Open Data.

Accessing the dataset

You will soon be able to find the metadata of the Linked Data Event Stream at https://www.pieter.pm/Blue-Bike-to-Linked-GBFS/

The Pipeline

It starts from a private API that Blue-Bike provided to us with availabilities, which you configure using a github secret (see below).

It then boots up an RML processor and maps data into the availabilities LDES compliant to the shape in availabilities.shacl (TODO).

Example station member in the availabilities LDES:

<https://blue-bike.be/stations/103#2021-12-04T16:20:12> a gbfs:Station ;
    dct:created "2021-12-04T16:20:12" ;
    dct:isVersionOf <https://blue-bike.be/stations/103> ;
    schema:name "Station Geel" ;
    wgs:latitude "51.168778000000"^^xsd:float ;
    wgs:longitude "4.988778000000"^^xsd:float ;
    gbfs:bikes_available 14 ;
    gbfs:docks_in_use 1 .

Github Action configuration

This repository contains a Github Action setup to automatically generate LDES data using RML of the Blue-Bike API. This API is confidential and must be provided as a Github Repository Secret.

1. Go to Settings > Secrets
2. Create a new secret using the New Repository Secret button
3. Use BLUEBIKE_API_URL as name and the URL as value. Note that the URL must be escaped for sed!

Example:

Name: BLUEBIKE_API_URL
Value: https:\/\/example.com\/api

License

This initial prototype is funded by the European CEF GreenMov project in collaboration with Digital Flanders

Released under the MIT license. (c) 2021 IDLab - Ghent University - imec

Authors:

• Dylan Van Assche
• Pieter Colpaert