xmlrpcplugin-r6077 trunk breaks TRAC 0.11 with Agilo installed on Debian Lenny

[Ameise71@…]

I get an error from Apache when activating xmlrpcplugin on my Debian Linux box running Trac 0.11.1. Seems to be caused by the plugin.

Traceback:

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/trac/web/api.py", line 339, in send_error
    'text/html')
  File "/usr/lib/python2.5/site-packages/trac/web/chrome.py", line 684, in render_template
    data = self.populate_data(req, data)
  File "/usr/lib/python2.5/site-packages/trac/web/chrome.py", line 592, in populate_data
    d['chrome'].update(req.chrome)
  File "/usr/lib/python2.5/site-packages/trac/web/api.py", line 169, in __getattr__
    value = self.callbacks[name](self)
  File "/usr/lib/python2.5/site-packages/trac/web/chrome.py", line 460, in prepare_request
    for category, name, text in contributor.get_navigation_items(req):
  File "/usr/lib/python2.5/site-packages/trac/versioncontrol/web_ui/browser.py", line 295, in get_navigation_items
    if 'BROWSER_VIEW' in req.perm:
  File "/usr/lib/python2.5/site-packages/trac/perm.py", line 523, in has_permission
    return self._has_permission(action, resource)
  File "/usr/lib/python2.5/site-packages/trac/perm.py", line 537, in _has_permission
    check_permission(action, perm.username, resource, perm)
  File "/usr/lib/python2.5/site-packages/trac/perm.py", line 424, in check_permission
    perm)
  File "/usr/lib/python2.5/site-packages/trac/perm.py", line 282, in check_permission
    get_user_permissions(username)
  File "/usr/lib/python2.5/site-packages/trac/perm.py", line 343, in get_user_permissions
    for requestor in self.requestors:
  File "/usr/lib/python2.5/site-packages/trac/core.py", line 67, in extensions
    return filter(None, [component.compmgr[cls] for cls in extensions])
  File "/usr/lib/python2.5/site-packages/trac/core.py", line 204, in __getitem__
    component = cls(self)
  File "/usr/lib/python2.5/site-packages/trac/core.py", line 108, in maybe_init
    init(self)
  File "build/bdist.linux-i686/egg/tracrpc/api.py", line 158, in __init__
    __import__('tracrpc', ['__version__']).__version__))
  File "build/bdist.linux-i686/egg/tracrpc/__init__.py", line 10, in <module>
  File "build/bdist.linux-i686/egg/tracrpc/web_ui.py", line 21, in <module>
ImportError: cannot import name exception_to_unicode

[anonymous]

Bummer. That method was added to Trac in ​trac:changeset:7835. Which means 0.11.3 or newer. I'll copy it into tracrpc.util as a backup for older Trac versions. Attaching patch - could you please verify it?

[osimons]

Compat workaround for newer Trac util method.

[Ameise71@…]

Looks good! Patched the files here and it does not crash anymore! Would highly appreciate to integrate that into one of the next revisions. Thanks for very quick help!

[osimons]

Thanks for testing. I'll commit shortly.

(Reformatted description)

[osimons]

(In [6078]) XmlRpcPlugin: Fix for use of a Trac method only available on 0.11.3 or higher. Made a compat-workaround for now.

Closes #5415.