Resolve a Download URL via CKAN package_show

Queries the CKAN package_show endpoint recorded in a provenance object and returns the URL of the first resource whose name matches the provenance's name-match pattern. CKAN powers data.ontario.ca, data.gov.uk, data.gov, and most government open-data portals, so this recovers the current download URL even if the underlying resource UUID has been replaced.

Usage

resolve_via_ckan(provenance)

Arguments

provenance

A provenance list as returned by load_provenance(). Must contain dataset$ckan_api_endpoint and resource$name_match_pattern.

Value

The matched resource URL as a character string, or NULL if the endpoint is missing, the request fails, CKAN reports failure, or no resource name matches.