datalinker provides various facilities for discovering and referring to data products and services within the Rubin Science Platform. It is deployed via Phalanx and depends on other Phalanx services such as Gafaelfawr for authentication.
The API provided by datalinker is primarily based on the IVOA DataLink standard, but it also provides some related service discovery facilities beyond the scope of that standard.
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Implements a "links" endpoint, providing a variety of file and service links given an ID for an image in the RSP image services. This endpoint is the target of the
access_urlcolumn in the RSP ObsTAP service. -
Implements a variety of "microservice" endpoints to be used as the targets of DataLink service descriptors, many of which will rewrite simple service-descriptor-friendly URL APIs into more complicated queries to a back end. Some of these will be associated with entries in the tables from the "links" endpoint for images; some will be used with service descriptors in catalog query results. These endpoints will eventually be moved to a different service.
datalinker implements version 1.1 of the IVOA DataLink standard with the following known exceptions:
- Service errors preventing a response are formatted as JSON rather than as VOTables.
datalinker is developed with the Safir framework.