Python Traceback

[anonymous]

Traceback (most recent call last):
  File "/usr/lib/python2.3/site-packages/trac/web/main.py", line 387, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.3/site-packages/trac/web/main.py", line 191, in dispatch
    chosen_handler = self._pre_process_request(req, chosen_handler)
  File "/usr/lib/python2.3/site-packages/trac/web/main.py", line 263, in _pre_process_request
    chosen_handler = f.pre_process_request(req, chosen_handler)
  File "/usr/lib/python2.3/site-packages/trac/versioncontrol/api.py", line 73, in pre_process_request
    self.get_repository(req.authname) # triggers a sync if applicable
  File "/usr/lib/python2.3/site-packages/trac/versioncontrol/api.py", line 101, in get_repository
    repos = self._connector.get_repository(rtype, rdir, authname)
  File "/usr/lib/python2.3/site-packages/trac/versioncontrol/svn_fs.py", line 260, in get_repository
    crepos = CachedRepository(self.env.get_db_cnx(), repos, None, self.log)
  File "/usr/lib/python2.3/site-packages/trac/versioncontrol/cache.py", line 34, in __init__
    self.sync()
  File "/usr/lib/python2.3/site-packages/trac/versioncontrol/cache.py", line 100, in sync
    (str(current_rev), path, kind, action,
  File "/usr/lib/python2.3/site-packages/trac/db/util.py", line 50, in execute
    return self.cursor.execute(sql_escape_percent(sql), args)
  File "/usr/lib/python2.3/site-packages/trac/db/sqlite_backend.py", line 56, in execute
    args or [])
  File "/usr/lib/python2.3/site-packages/trac/db/sqlite_backend.py", line 48, in _rollback_on_error
    return function(self, *args, **kwargs)
IntegrityError: columns rev, path, change_type are not unique

[Christian Boos]

This kind of error should be expected, however we should simply catch it and proceed normally, as this simply means another process or thread has synced the cache in the meantime.

A better solution would be to do the sync in a kind of "atomic" way, though that's not that easy.

See related #4043.