Edgewall Software
Modify

Opened 18 years ago

Closed 18 years ago

Last modified 18 years ago

#4164 closed defect (duplicate)

SVN authz_ spins on RepositoryManager lock

Reported by: jkyllo-trac@… Owned by: Christian Boos
Priority: normal Milestone:
Component: version control/browser Version: 0.10.1
Severity: normal Keywords:
Cc: Branch:
Release Notes:
API Changes:
Internal Changes:

Description (last modified by Emmanuel Blot)

Note: This is against 0.10.2 but that version is not yet in the version list.

I have been looking into an issue where trying to use the authz_ functionality for svn results in the source browser hanging. The user experience is that the user clicks on "Browse Source" and the browser never loads a page. While adding a ton of print statements to narrow down what was happening I ended up introducing an error which caused an exception. As it turns out this exception showed the source of the problem: versioncontrol/web_ui/browser.py calls RepositoryManager.get_repository which then calls SubversionConnector.get_repository which then creates a new SubversionAuthorizer. The SubversionAuthorizer then calls Environment.get_repository which in turn calls RepositoryManager.get_repository. Since RepositoryManager locks before performing this call (now for the second time) the application is frozen. To get more info, I added a check before locking and produced the following traceback:

Traceback (most recent call last):
  File "/usr/local/lib/python2.3/site-packages/trac/web/main.py", line 379, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.3/site-packages/trac/web/main.py", line 230, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/local/lib/python2.3/site-packages/trac/versioncontrol/web_ui/browser.py", line 95, in process_request
    repos = self.env.get_repository(req.authname)
  File "/usr/local/lib/python2.3/site-packages/trac/env.py", line 195, in get_repository
    return RepositoryManager(self).get_repository(authname)
  File "/usr/local/lib/python2.3/site-packages/trac/versioncontrol/api.py", line 97, in get_repository
    repos = self._connector.get_repository(rtype, rdir, authname)
  File "/usr/local/lib/python2.3/site-packages/trac/versioncontrol/svn_fs.py", line 268, in get_repository
    authz = SubversionAuthorizer(self.env, authname)
  File "/usr/local/lib/python2.3/site-packages/trac/versioncontrol/svn_authz.py", line 48, in SubversionAuthorizer
    repos = env.get_repository()
  File "/usr/local/lib/python2.3/site-packages/trac/env.py", line 195, in get_repository
    return RepositoryManager(self).get_repository(authname)
  File "/usr/local/lib/python2.3/site-packages/trac/versioncontrol/api.py", line 74, in get_repository
    raise Exception('get_repository already called!')
Exception: get_repository already called!

I have these settings in trac.ini:

authz_module_name = resolver
authz_file = /etc/apache2/svnpolicy

In this scenario, I have the following authz file:

[/]
* = r
jkyllo = rw

[resolver:/]
jkyllo = rw

[movgen:/]
jkyllo = rw

Here is the versioncontrol/api.py diff against 0.10.2 to produce the above traceback:

63a64
>       self.called = False
67a69,72
>       if self.called:
>           raise Exception('get_repository already called!')
>       self.called = True
>

I'm not sure what the logic is supposed be, but is there some configuration I'm missing, or is this really a bug?

Thanks.

Attachments (0)

Change History (6)

comment:1 by anonymous, 18 years ago

Forgot to code quote the traceback and the diff:

traceback:

Traceback (most recent call last):
  File "/usr/local/lib/python2.3/site-packages/trac/web/main.py", line 379, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.3/site-packages/trac/web/main.py", line 230, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/local/lib/python2.3/site-packages/trac/versioncontrol/web_ui/browser.py", line 95, in process_request
    repos = self.env.get_repository(req.authname)
  File "/usr/local/lib/python2.3/site-packages/trac/env.py", line 195, in get_repository
    return RepositoryManager(self).get_repository(authname)
  File "/usr/local/lib/python2.3/site-packages/trac/versioncontrol/api.py", line 97, in get_repository
    repos = self._connector.get_repository(rtype, rdir, authname)
  File "/usr/local/lib/python2.3/site-packages/trac/versioncontrol/svn_fs.py", line 268, in get_repository
    authz = SubversionAuthorizer(self.env, authname)
  File "/usr/local/lib/python2.3/site-packages/trac/versioncontrol/svn_authz.py", line 48, in SubversionAuthorizer
    repos = env.get_repository()
  File "/usr/local/lib/python2.3/site-packages/trac/env.py", line 195, in get_repository
    return RepositoryManager(self).get_repository(authname)
  File "/usr/local/lib/python2.3/site-packages/trac/versioncontrol/api.py", line 74, in get_repository
    raise Exception('get_repository already called!')
Exception: get_repository already called!

diff:

63a64
>       self.called = False
67a69,72
>       if self.called:
>           raise Exception('get_repository already called!')
>       self.called = True
>

in reply to:  1 comment:2 by anonymous, 18 years ago

Quoted configs:

track.ini:

[trac]
authz_module_name = resolver
authz_file = /etc/apache2/svnpolicy

svnpolicy:

[/]
* = r
jkyllo = rw

[resolver:/]
jkyllo = rw

[movgen:/]
jkyllo = rw

comment:3 by Emmanuel Blot, 18 years ago

Description: modified (diff)

comment:4 by Emmanuel Blot, 18 years ago

Version: 0.100.10.2

comment:5 by Jeff Kyllo <jkyllo-trac@…>, 18 years ago

Resolution: duplicate
Status: newclosed

Duplicate of #3996

comment:6 by Christian Boos, 18 years ago

Version: 0.10.20.10.1

Well, yes, you were 30 seconds faster than me ;)


Thanks for the report, but you're wrong, you must be using 0.10.1, as this very issue (duplicate of #3996) is one of the few which has been fixed for the bugfix release 0.10.2.

Check by yourself:

(also, the line in question is 40, not 48, so that file must have been modified as well)

Modify Ticket

Change Properties
Set your email in Preferences
Action
as closed The owner will remain Christian Boos.
The resolution will be deleted. Next status will be 'reopened'.
to The owner will be changed from Christian Boos to the specified user.

Add Comment


E-mail address and name can be saved in the Preferences .
 
Note: See TracTickets for help on using tickets.