def __init__()

in fbtftp/base_server.py [0:0]


    def __init__(self, server_addr=None, interval=None):
        """
        `ServerStats` represents a digest of what happened during the server's
        lifetime.

        This class exposes a counter interface with get/set/reset methods and
        an atomic get-and-reset.

        An instance of this class is passed to a periodic function that is
        executed by a background thread inside the `BaseServer` object.
        See `stats_callback` in the `BaseServer` constructor.

        If you use it in a metric publishing callback, remember to use atomic
        operations and to reset the counters to have a fresh start. E.g. see
        `get_and_reset_all_counters'.

        Args:
            server_addr (str): the server address, either v4 or v6.
            interval (int): stats interval in seconds.

        Note:
            `server_addr` and `interval` are provided by the `BaseServer`
            class.  They are not used in this class, they are there for the
            programmer's convenience, in case one wants to use them.
        """
        self.server_addr = server_addr
        self.interval = interval
        self.start_time = time.time()
        self._counters = collections.Counter()
        self._counters_lock = threading.Lock()