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wmo-im / wis2-gdc

WIS2 Global Discovery Catalogue Reference Implementation
https://wis2-gdc.readthedocs.io
Apache License 2.0
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add option to filter by record with WIS2-topic to subscribe to #11

Closed maaikelimper closed 2 months ago

maaikelimper commented 4 months ago

context: WMO is developing a WIS2 subscription manager to allow users to query the GDC and find topics to subscribe to on a Global Broker. problem: currently when querying the GDC-API we find many datasets where we fail to parse a channel from the actional links and we need to parse many records before finding a dataset that can be subscribed to.

Since subscribing to data notifications over MQTT via a Global Broker is a core feature of WIS2, I'd like to request for the GDC-API to provide the option to filter by records with a valid WIS2-topic to subscribe to.

tomkralidis commented 3 months ago

A user can query by topic (partial or otherwise) as follows:

https://wis2-gdc.weather.gc.ca/collections/wis2-discovery-metadata/items?q=%22cache/a/wis2/bz-nms%22

Note that topic validation per se is not performed in the above as part of the search.