Ontology web service (
This module implements IndraOntology functionalities as a web service. If instantiating an ontology directly is not desirable (for instance because of memory constraints), this app can be started on a suitable server, and an instance of the VirtualOntology class can be used to communicate with it transparently.
To start the server, run
python -m indra.ontology.app.app
or use a WSGI application server such as gunicorn (the service uses port 8002 by default, this can be changed using the –port argument).
Once the service is started, one option is to create an instance of VirtualOntology(url=<service url>) and use it as an argument in various function calls.
Another option is to set the value INDRA_ONTOLOGY_URL=<service url> either as an environmental variable or in the INDRA configuration file. If this value is set, INDRA will use an appropriate instance of a VirtualOntology which communicates with the service in place of the BioOntology.