pycsw Migration Guide

This page provides migration support across pycsw versions over time to help with pycsw change management.

pycsw 2.x to 3.0 Migration

  • the default endpoint for standalone deployments is now powered by pycsw/wsgi_flask.py (based on Flask) which supports ALL pycsw supported APIs. Make sure to use requirements-standalone.txt on top of requirements.txt to install Flask along with other standalone requirements
  • the previously used pycsw/wsgi.py can still be used for CSW only deployments or for applications that need to integrate pycsw as a library (e.g. Django applications). PyPI installations still use requirements.txt which does not install Flask by default
  • the default endpoint / is now OARec
  • the CSW endpoint is now /csw
  • the OAI-PMH endpoint is now /oaipmh
  • the OpenSearch endpoint is now /opensearch
  • the SRU endpoint is now /sru
  • the pycsw-admin.py syntax has been updated
    • the -c flag has been replaced by subcommands (i.e. pycsw-admin.py -c load_records -> pycsw-admin.py load-records)
    • subcommands have been slugified (i.e. load_records -> load-records)
    • consult --help to use the updated CLI syntax

pycsw 1.x to 2.0 Migration

  • the default CSW version is now 3.0.0. CSW clients need to explicitly specify version=2.0.2 for CSW 2 behaviour. Also, pycsw administrators can use a WSGI wrapper to the pycsw API to force version=2.0.2 on init of pycsw.server.Csw from the server. See CSW Support for more information.
  • pycsw.server.Csw.dispatch_wsgi() previously returned the response content as a string. 2.0.0 introduces a compatability break to additionally return the HTTP status code along with the response as a list
from pycsw.server import Csw
my_csw = Csw(my_dict)  # add: env=some_environ_dict,  version='2.0.2' if preferred

# using pycsw 1.x
response = my_csw.dispatch_wsgi()

# using pycsw 2.0
http_status_code, response = my_csw.dispatch_wsgi()

# covering either pycsw version
content = csw.dispatch_wsgi()

# pycsw 2.0 has an API break:
# pycsw < 2.0: content = xml_response
# pycsw >= 2.0: content = [http_status_code, content]
# deal with the API break
if isinstance(content, list):  # pycsw 2.0+
    http_response_code, response = content

See API for more information.