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Codemeta Server

Codemeta server provides a simple portal to software tools, based on software metadata in codemeta and schema.org. It is implemented as an in-memory RDF triple store and provides an API (including SPARQL endpoint) for querying. It builds upon the codemeta2html and codemetapy libraries, which implement most of the functionality. Automatic harvesting of software metadata can be accomplished via codemeta-harvester.

Note: If you want a static site instead of a triple-store backed web application, then you dont need codemeta-server and can just use codemeta2html.

Features:

• Web-user interface for end-users (i.e. everything from codemeta2html):
  • rich RDFa data (codemeta/schema.org/etc) embedded in the HTML, expressing as much of the input linked data as possible. This means though we visualise for humans, we do not sacrifice on machine parsability and semantic interpretability.
  • index pages (card view & table view)
  • one dedicated page per software source project
  • client-side filtering (faceted search) capabilities
  • direct access to the underlying JSON-LD and Turtle serialisations per source project and for the complete data graph as a whole
  • responsive layout suitable for different devices and screen-sizes
  • Integrates some badges (aka shields) like for GitHub, Repostatus
  • minimal amount of external web calls (only for github/gitlab badges and for external resources references directly by the software metadata itself)
  • minimal client-side javascript, also usable without (except for filtering)
• Simple server-side search/query facilities
• Advanced query facilities using SPARQL:
  • SPARQL endpoint
  • YASGUI front-end for end-users.
• JSON-LD and turtle serialisations for all data, full support for content negotiation
• Supports various extensions to codemeta:
  • Software Types and Services

This software is developed in the scope of the CLARIAH-PLUS project, a Dockerfile for the CLARIAH Tool Discovery pipeline, including both the harvester and this server and API powering the CLARIAH Tool Store, can be found here: https://github.com/CLARIAH/tool-discovery .

Installation

pip install codemeta-server

Usage

In development scenarios, you can run codemeta-server as follows: codemeta-server --graph data.json --baseuri http://localhost:8080/ --baseurl http://localhost:8080/ --port 8080 Check codemeta-server --help for help on all the options.

The file data.json is produced by codemetapy (possibly via codemeta-harvester and contains the full linked data graph of all tools you want to show. Say you have codemeta.json files for two resources, then you can use codemetapy to create a graph as follows:

codemetapy --baseuri http://localhost:8080/ --graph resource1.codemeta.json resource2.codemeta.json > data.json

If you have no codemeta files at all yet, then still you can use codemetapy (via codemeta-harvester to automatically extract metadata from other known schemas.

For production scenarios, you'll want to run codemeta-server via WSGI/ASGI, check the Dockerfile in https://github.com/CLARIAH/tool-discovery .

Screenshots

Excerpt of a tool index in the default 'card' view:

Excerpt of a tool index in the table view:

An example page for a specific tool:

The SPARQL frontend (Yasgui):