replybot does not handle SQLite database locked concurrency well

[Barry Warsaw]

Poorly formatted, but replybot can fail when committing the transaction if the
SQLite database is already locked.

Command died with
   status 1: "/usr/bin/replybot -s xxx". Command output: Traceback (most
   recent call last): File "/usr/bin/replybot", line 8, in <module>
   load_entry_point('replybot==5.0.0', 'console_scripts', 'replybot')() File
   "build/bdist.linux-i686/egg/botlib/main.py", line 71, in main File
   "build/bdist.linux-i686/egg/botlib/database.py", line 164, in __init__
   File
   "/usr/lib/python2.5/site-packages/storm-0.12-py2.5.egg/storm/store.py",
   line 105, in commit self.flush() File
   "/usr/lib/python2.5/site-packages/storm-0.12-py2.5.egg/storm/store.py",
   line 443, in flush self._flush_one(obj_info) File
   "/usr/lib/python2.5/site-packages/storm-0.12-py2.5.egg/storm/store.py",
   line 502, in _flush_one self._connection.execute(expr, noresult=True)
   File
   "//usr/lib/python2.5/site-packages/storm-0.12-py2.5.egg/storm/database.py",
   line 202, in execute self.raw_execute, statement, params) File
   "//usr/lib/python2.5/site-packages/storm-0.12-py2.5.egg/storm/database.py",
   line 317, in _check_disconnect return function(*args, **kwargs) File
   "/usr/lib/python2.5/site-packages/storm-0.12-py2.5.egg/storm/databases/sqlite.py",
   line 153, in raw_execute return Connection.raw_execute(self, statement,
   params) File
   "//usr/lib/python2.5/site-packages/storm-0.12-py2.5.egg/storm/database.py",
   line 283, in raw_execute raw_cursor.execute(statement, params)
   sqlite3.OperationalError: database is locked