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Unidata / siphon

Siphon - A collection of Python utilities for retrieving atmospheric and oceanic data from remote sources, focusing on being able to retrieve data from Unidata data technologies, such as the THREDDS data server.

Home Page:https://unidata.github.io/siphon

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Datasets in nested catalogs have empty access_urls

tdrwenski opened this issue · comments

commented

When a catalog has a simple dataset like:

  <dataset name="Test Grid Dataset Services" ID="gridDatasetServices" urlPath="localContent/testData.nc" dataType="Grid"/>

Running the code from the thredds default_viewer.ipynb results in a list of services like:

> list(ds.access_urls)
['OpenDAP',
 'DAP4',
 'HTTPServer',
 'WCS',
 'WMS',
 'NetcdfSubset',
 'CdmRemote',
 'ISO',
 'NCML',
 'UDDC']

However, putting the same dataset not the main catalog, but instead a catalog linked through a catalogRef leads to an empty list ofaccess_urls. I think this may be a Siphon issue not a thredds issue because the services are correctly listed in both cases in the thredds html/xml.

Additional notes:

  • same problem exists whether you explicitly add services or use the gridServices like in the example above
  • problem does not exist for featureCollections or datasetScans like we mostly have on our thredds servers