Oplog.py 文件源码

def open(self):
        if not self._oplog:
            try:
                logging.debug("Opening oplog file %s" % self.oplog_file)
                if self.do_gzip:
                    self._oplog  = GzipFile(self.oplog_file, self.file_mode)
                else:
                    self._oplog = open(self.oplog_file, self.file_mode)
            except Exception, e:
                logging.fatal("Error opening oplog file %s! Error: %s" % (self.oplog_file, e))
                raise OperationError(e)
        return self._oplog