Bug: switch group with new decorator

[wmoore]

Tried switching user to a different group on gretzky (with conn decorators).

Environment:


Request Method: GET
Request URL: http://gretzky.openmicroscopy.org.uk/webclient/active_group/?url=/webclient/userdata/&active_group=6

Django Version: 1.3.1
Python Version: 2.6.5
Installed Applications:
['django.contrib.staticfiles',
 'django.contrib.markup',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'omeroweb.feedback',
 'omeroweb.webadmin',
 'omeroweb.webclient',
 'omeroweb.webgateway',
 'omeroweb.webtest',
 'omeroweb.webmobile',
 'omeroweb.webpublic',
 'omeroweb.webredirect']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware')


Traceback:
File "/home/omero/slave/workspace/OMERO-merge-green/src/dist/lib/python/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/home/omero/slave/workspace/OMERO-merge-green/src/dist/lib/python/omeroweb/decorators.py" in wrapped
  243.             return f(request, *args, **kwargs)
File "/home/omero/slave/workspace/OMERO-merge-green/src/dist/lib/python/omeroweb/webclient/views.py" in change_active_group
  455.     request.session['server'] = blitz.id

Exception Type: AttributeError at /webclient/active_group/
Exception Value: 'NoneType' object has no attribute 'id'

[jburel]

Moved from sprint 2012-02-28 (9)

[atarkowska]

in the context of #8235 this is no longer valid

[wmoore]

Going to try and see if we can work around this using omero.group instead of switch group.

[atarkowska]

Referring to the quick chat this morning between Josh, Chris and Ola the biggest issue with the implementation put in place in 4.3 was that with new decorator HTTP session no longer store credentials. In 4.3 switching group was basically creating new connection where existing one was lost in space. In 4.4 that implementation no longer works and was replaced by updating security context for the following session. That change also cause problems with switching active group because of closing active services and running jobs.

The suggested idea was to try setting omero.group property for each single view method/query and make sure correct data are loaded rather then changing group on the omero session level. This should allow to keep track on active services and running jobs in activity window under the same session.

[wmoore]

This is mostly working now in branch ​https://github.com/will-moore/openmicroscopy/commits/group_switch_8102
Most recent commit is ​https://github.com/will-moore/openmicroscopy/commit/f9b8cf61f2224370155dff6d3aa8618718c57f1f

A couple of known issues remaining: #8582, #8581.

Closing...

[Will Moore <will@…>]

(In [ce0dd2eb6a5d16ea4d93f83ce76461501b199f1e/ome.git] on branch develop) Decorator sets omero.group:'-1' See #8102

We use request.sessionactive_group? to set the conn omero.group when loading
data into the jsTree.