/usr/lib/python3/dist-packages/tornadio2/stats.py is in python3-tornadio2 0.0.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | # -*- coding: utf-8 -*-
#
# Copyright: (c) 2011 by the Serge S. Koval, see AUTHORS for more details.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
tornadio2.stats
~~~~~~~~~~~~~~~
Statistics module
"""
from datetime import datetime
from collections import deque
from tornado import ioloop
class MovingAverage(object):
"""Moving average class implementation"""
def __init__(self, period=10):
"""Constructor.
`period`
Moving window size. Average will be calculated
from the data in the window.
"""
self.period = period
self.stream = deque()
self.sum = 0
self.accumulator = 0
self.last_average = 0
def add(self, n):
"""Add value to the current accumulator
`n`
Value to add
"""
self.accumulator += n
def flush(self):
"""Add accumulator to the moving average queue
and reset it. For example, called by the StatsCollector
once per second to calculate per-second average.
"""
n = self.accumulator
self.accumulator = 0
stream = self.stream
stream.append(n)
self.sum += n
streamlen = len(stream)
if streamlen > self.period:
self.sum -= stream.popleft()
streamlen -= 1
if streamlen == 0:
self.last_average = 0
else:
self.last_average = self.sum / float(streamlen)
class StatsCollector(object):
"""Statistics collector"""
def __init__(self):
self.periodic_callback = None
self.start_time = datetime.now()
# Sessions
self.max_sessions = 0
self.active_sessions = 0
# Connections
self.max_connections = 0
self.active_connections = 0
self.connections_ps = MovingAverage()
# Packets
self.packets_sent_ps = MovingAverage()
self.packets_recv_ps = MovingAverage()
# Sessions
def session_opened(self):
self.active_sessions += 1
if self.active_sessions > self.max_sessions:
self.max_sessions = self.active_sessions
def session_closed(self):
self.active_sessions -= 1
# Connections
def connection_opened(self):
self.active_connections += 1
if self.active_connections > self.max_connections:
self.max_connections = self.active_connections
self.connections_ps.add(1)
def connection_closed(self):
self.active_connections -= 1
# Packets
def on_packet_sent(self, num):
self.packets_sent_ps.add(num)
def on_packet_recv(self, num):
self.packets_recv_ps.add(num)
def dump(self):
"""Return current statistics"""
return dict(
# Sessions
active_sessions=self.active_sessions,
max_sessions=self.max_sessions,
# Connections
active_connections=self.active_connections,
max_connections=self.max_connections,
connections_ps=self.connections_ps.last_average,
# Packets
packets_sent_ps=self.packets_sent_ps.last_average,
packets_recv_ps=self.packets_recv_ps.last_average
)
def _update_averages(self):
self.packets_sent_ps.flush()
self.packets_recv_ps.flush()
self.connections_ps.flush()
def start(self, io_loop):
# If started, will collect averages every second
self.periodic_callback = ioloop.PeriodicCallback(self._update_averages, 1000, io_loop)
self.periodic_callback.start()
|