Yoda MOAI service

Yoda MOAI

MOAI provides a harvesting interface based on the OAI-PMH protocol. Other software can use this harvesting interface to retrieve metadata of published Yoda data packages. MOAI can provide metadata to harvesters in different formats, which are specified using metadata prefixes. Currently, metadata prefixes are available for Dublin Core (oai_dc), Datacite (datacite or oai_datacite) and ISO 19139 (iso19139).

Architecture

When a data package is published in Yoda, the metadata combi file is copied from the provider or consumer server to the MOAI server using SCP. The update_moai job on the MOAI server scans the uploaded metadata combi files every five minutes and ingests the metadata into a local SQLite database. The MOAI web server provides a public OAI-PMH endpoint that can be used by harvesters. The web server uses the SQLite database as its source of information.