'Returns a router corresponding to a given username.'

def GetRouterForUser(self, username):

    for (index, router) in enumerate(self.routers):
        router_id = str(index)
        if self.auth_manager.CheckPermissions(username, router_id):
            logging.debug('Matched    router    %s    to    user    %s', router.__class__.__name__, username)
            return router
    logging.debug('No    router    ACL    rule    match    for    user    %s.    Using    default    router    %s', username, self.default_router.__class__.__name__)
    return self.default_router
