[ckan-dev] CKAN CSW Harvest - GeoServer Error

[Derek Hohls]

We are trying to setup our GeoServer for harvesting by CKAN.

The plug-in has been installed and all seems good.

If I use Python and owslib.csw, then I am able to communicate and get results e.g.

>>> from owslib.csw import CatalogueServiceWeb
URL = 'http://localhost:8080/geoserver/csw'
>>> csw = CatalogueServiceWeb(URL)
>>> csw.getrecords2(maxrecords=20)
>>> csw.results
{'matches': 25, 'nextrecord': 21, 'returned': 20}
>>> for rec in csw.records:
...     print csw.records[rec].title
... 
Tasmania water bodies
Tasmania cities
Tasmania state boundaries
Tasmania roads
USA Population
World rectangle

However, trying a harvest from CKAN results in "dc:" errors:

2016-02-07 15:37:49,325 DEBUG [ckanext.spatial.harvesters.csw.CSW.gather] Starting gathering for http://localhost:8080/geoserver/csw/
2016-02-07 15:37:49,325 INFO  [ckanext.spatial.lib.csw_client] Making CSW request: getrecords2 {'typenames': 'csw:Record', 'maxrecords': 10, 'sortby': <owslib.fes.SortBy object at 0x7f0c541551d0>, 'outputschema': 'http://www.isotc211.org/2005/gmd', 'cql': None, 'startposition': 0, 'esn': 'brief', 'constraints': []}
2016-02-07 15:37:50,403 ERROR [ckanext.spatial.harvesters.csw.CSW.gather] Exception: Traceback (most recent call last):
  File "/usr/lib/ckan/default/src/ckanext-spatial/ckanext/spatial/harvesters/csw.py", line 95, in gather_stage
    for identifier in self.csw.getidentifiers(page=10, outputschema=self.output_schema(), cql=cql):
  File "/usr/lib/ckan/default/src/ckanext-spatial/ckanext/spatial/lib/csw_client.py", line 127, in getidentifiers
    csw.getrecords2(**kwa)
  File "/usr/lib/ckan/default/local/lib/python2.7/site-packages/owslib/csw.py", line 341, in getrecords2
    self._invoke()
  File "/usr/lib/ckan/default/local/lib/python2.7/site-packages/owslib/csw.py", line 605, in _invoke
    raise ows.ExceptionReport(self._exml, self.owscommon.namespace)
ExceptionReport: 'Request failed due to: Sorting on dc:identifier/dc:value is not supported.\nSorting on dc:identifier/dc:value is not supported.'
2016-02-07 15:37:50,455 INFO  [ckanext.harvest.model] Error gathering the identifiers from the CSW server ['Request failed due to: Sorting on dc:identifier/dc:value is not supported.\nSorting on dc:identifier/dc:value is not supported.']
2016-02-07 15:37:50,462 ERROR [ckanext.harvest.queue] Gather stage failed

Can anyone help with this (running GeoServer 2.8 and CKAN 2.5)

Thanks
Derek



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