mirror of
https://github.com/jupyterhub/jupyterhub.git
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447edd081a
this is the most likely cause of redirect loops when using docker, so record the spawner version and check it when a redirect is detected. In the event of a redirect and mismatch, fail with a message explaining the version mismatch and how to fix it.
46 lines
1.6 KiB
Python
46 lines
1.6 KiB
Python
"""JupyterHub version info"""
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# Copyright (c) Jupyter Development Team.
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# Distributed under the terms of the Modified BSD License.
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version_info = (
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0,
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8,
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0,
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'b3',
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)
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__version__ = '.'.join(map(str, version_info))
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def _check_version(hub_version, singleuser_version, log):
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"""Compare Hub and single-user server versions"""
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if not hub_version:
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log.warning("Hub has no version header, which means it is likely < 0.8. Expected %s", __version__)
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return
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if not singleuser_version:
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log.warning("Single-user server has no version header, which means it is likely < 0.8. Expected %s", __version__)
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return
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# compare minor X.Y versions
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if hub_version != singleuser_version:
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from distutils.version import LooseVersion as V
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hub_major_minor = V(hub_version).version[:2]
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singleuser_major_minor = V(singleuser_version).version[:2]
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if singleuser_major_minor == hub_major_minor:
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# patch-level mismatch or lower, log difference at debug-level
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# because this should be fine
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log_method = log.debug
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else:
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# log warning-level for more significant mismatch, such as 0.8 vs 0.9, etc.
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log_method = log.warning
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extra = " This could cause failure to authenticate and result in redirect loops!"
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log_method(
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"jupyterhub version %s != jupyterhub-singleuser version %s." + extra,
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hub_version,
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singleuser_version,
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)
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else:
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log.debug("jupyterhub and jupyterhub-singleuser both on version %s" % hub_version)
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