Deviation from expectations found for davmail 6.0.1

[tubaman]

ERROR:caldav:Deviation from expectations found.  Please raise an issue at https://github.com/python-caldav/caldav/issues or reach out to t-caldav@tobixen.no, include this error and the traceback and tell what server you are using
Traceback (most recent call last):
  File "/Users/myuser/.virtualenvs/myproject/lib/python3.10/site-packages/caldav/lib/error.py", line 26, in assert_
    assert(condition)
AssertionError

caldav version: 661785b

[tobixen]

Unfortunately the traceback is useless - should probably find some way to improve on that.

If you set environmental variable PYTHON_CALDAV_DEBUGMODE to DEBUG it will throw a proper error instead of just logging the error .... and if you set it to DEBUG_PDB you will get throwin into the debugger.

[tubaman]

Traceback with PYTHON_CALDAV_DEBUGMODE=DEBUG:

Traceback (most recent call last):
  File "/Users/myuser/sandboxes/myproject/./syncfromptocalendar", line 216, in <module>
    sys.exit(main())
  File "/Users/myuser/sandboxes/myproject/./syncfromptocalendar", line 212, in main
    syncfrompto()
  File "/Users/myuser/sandboxes/myproject/./syncfromptocalendar", line 184, in syncfrompto
    calendar_pto_events = set(get_our_pto_events())
  File "/Users/myuser/sandboxes/myproject/./syncfromptocalendar", line 145, in get_our_pto_events
    our_calendar_pto_events = [e for e in calendar_pto_events if e.organizer in direct_reports]
  File "/Users/myuser/sandboxes/myproject/./syncfromptocalendar", line 145, in <listcomp>
    our_calendar_pto_events = [e for e in calendar_pto_events if e.organizer in direct_reports]
  File "/Users/myuser/sandboxes/myproject/./syncfromptocalendar", line 101, in get_pto_events
    cal_events = get_events()
  File "/Users/myuser/sandboxes/myproject/./syncfromptocalendar", line 42, in get_events
    return calendar.date_search(start=start, end=end, expand=False)
  File "/Users/myuser/.virtualenvs/myproject/lib/python3.10/site-packages/caldav/objects.py", line 750, in date_search
    objects = self.search(root, comp_class)
  File "/Users/myuser/.virtualenvs/myproject/lib/python3.10/site-packages/caldav/objects.py", line 812, in search
    (response, objects) = self._request_report_build_resultlist(xml, comp_class)
  File "/Users/myuser/.virtualenvs/myproject/lib/python3.10/site-packages/caldav/objects.py", line 780, in _request_report_build_resultlist
    results = response.expand_simple_props(props_)
  File "/Users/myuser/.virtualenvs/myproject/lib/python3.10/site-packages/caldav/davclient.py", line 269, in expand_simple_props
    props_found[prop.tag] = self._expand_simple_prop(prop.tag, props_found, xpath=xpath)
  File "/Users/myuser/.virtualenvs/myproject/lib/python3.10/site-packages/caldav/davclient.py", line 232, in _expand_simple_prop
    error.assert_(not prop_xml.items())
  File "/Users/myuser/.virtualenvs/myproject/lib/python3.10/site-packages/caldav/lib/error.py", line 26, in assert_
    assert(condition)
AssertionError

[tobixen]

Interesting - your server returns more data than expected. It's probably not against the RFC, hence an assert here is probably not quite right, but at the other hand it would be nice to check up that the library is not ignoring anything important. Could you fish out the XML for me? Either through the debugger or by injecting some logging directly into davclient.py. The XML should be available as self.raw from the DAVResponse class.

[DeastinY]

this is still open; assuming this was not fixed in the meantime? I am running into the same issue

[tobixen]

What version of the caldav library are you using, what server, and what exactly is your error message?

Generally as it's intended now, there should be no "deviation from expections" while running the official releases of the caldav library (those are generally harmless and will just be ignored), while the code may break with asserts or logging when running from the main branch and/or when setting debugging environment variables.

[tobixen]

I assume this issue is gone and will close the issue. Please scream out if I'm wrong.

[tobixen]

Oh, the latest report was February this year? Anyway, I don't think there is anything for me to do here without more information, so I leave it closed as for now not to clutter the list of issues.

[DeastinY]

sorry for the lack of reply and thank you for your work on davmail!
While I think this is still happening, it is not really a problem, just noisy logs for now I think.
Cheers

[tobixen]

Oh, still an issue?

[tobixen]

I will throw in some additional logging as for now. But I'm quite curious from which server this issue comes from.

[kunom]

Flying by after having been instructed so by the log output. This is against https://caldav.gmx.net/begenda/dav/xxx_my_email_address

ERROR:caldav:If you see this, please add a report at https://github.com/python-caldav/caldav/issues/209 - in _expand_simple_prop, dealing with {urn:ietf:params:xml:ns:caldav}calendar-data, extra items found: <C:calendar-data xmlns:C="urn:ietf:params:xml:ns:caldav" xmlns:D="DAV:" C:content-type="text/calendar" C:version="2.0">BEGIN:VCALENDAR&#13;
PRODID:Chandler Server 1.0.27//NONSGML//DE&#13;
VERSION:2.0&#13;
CALSCALE:GREGORIAN&#13;
BEGIN:VEVENT&#13;
DTSTAMP:20160725T181722Z&#13;
UID:PID538&#13;
SUMMARY:Coiffeur&#13;
DESCRIPTION:&#13;
CATEGORIES:Privat&#13;
DTSTART:20080115T164500Z&#13;
DTEND:20080115T174500Z&#13;
CLASS:PUBLIC&#13;
BEGIN:VALARM&#13;
TRIGGER:-PT30M&#13;
UID:984f3036-ac4f-4490-a234-766c27a56db4&#13;
ACTION:X-EMAIL&#13;
DESCRIPTION:X-EMAIL&#13;
END:VALARM&#13;
END:VEVENT&#13;
END:VCALENDAR&#13;
</C:calendar-data>
.

[tobixen]

GMX is using Chandler? I thought that was a pretty dead project. Interesting.