superset/stats_logger.py

# -*- coding: utf-8 -*-
# pylint: disable=C,R,W
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals

import logging

from colorama import Fore, Style


class BaseStatsLogger(object):
    """Base class for logging realtime events"""

    def __init__(self, prefix='superset'):
        self.prefix = prefix

    def key(self, key):
        if self.prefix:
            return self.prefix + key
        return key

    def incr(self, key):
        """Increment a counter"""
        raise NotImplementedError()

    def decr(self, key):
        """Decrement a counter"""
        raise NotImplementedError()

    def gauge(self, key):
        """Setup a gauge"""
        raise NotImplementedError()


class DummyStatsLogger(BaseStatsLogger):
    def incr(self, key):
        logging.debug(
            Fore.CYAN + '[stats_logger] (incr) ' + key + Style.RESET_ALL)

    def decr(self, key):
        logging.debug((
            Fore.CYAN + '[stats_logger] (decr) ' + key +
            Style.RESET_ALL))

    def gauge(self, key, value):
        logging.debug((
            Fore.CYAN + '[stats_logger] (gauge) '
            '{key} | {value}' + Style.RESET_ALL).format(**locals()))


try:
    from statsd import StatsClient

    class StatsdStatsLogger(BaseStatsLogger):
        def __init__(self, host, port, prefix='superset'):
            self.client = StatsClient(host=host, port=port, prefix=prefix)

        def incr(self, key):
            self.client.incr(key)

        def decr(self, key):
            self.client.decr(key)

        def gauge(self, key):
            # pylint: disable=no-value-for-parameter
            self.client.gauge(key)

except Exception as e:
    pass