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#!/usr/bin/env python
"""
Copyright (C) 2011 Apture, Inc
Author: R. Tyler Croy
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
"""
import optparse
import sys
import eventlet
eventlet.monkey_patch()
from eventlet.green import time
from eventlet.green import socket
from eventlet.green import SocketServer
CARBON_SERVER = '127.0.0.1'
CARBON_PORT = 2003
AGGREGATE_TIMEOUT = 60
class StatsServer(SocketServer.UDPServer):
debug = False
def __init__(self, *args, **kwargs):
self._count_data = {}
self._timing_data = {}
eventlet.spawn_after(AGGREGATE_TIMEOUT, self.aggregate_flush)
SocketServer.UDPServer.__init__(self, *args, **kwargs)
def _generate_counts(self):
for label, points in self._count_data.iteritems():
value = 0.0
for count, tstamp in points:
value += float(count)
now = int(time.time())
yield '%(label)s %(value)s %(now)s' % locals()
def _generate_timings(self):
for label, points in self._timing_data.iteritems():
lower = sys.maxint
upper = 0.0
total = 0.0
count = 0.0
for delta, tstamp in points:
if delta < lower:
lower = delta
if delta > upper:
upper = delta
count += 1.0
total += delta
now = int(time.time())
average = (total / count)
yield '%(label)s.avg %(average)s %(now)s' % locals()
yield '%(label)s.lower %(lower)s %(now)s' % locals()
yield '%(label)s.upper %(upper)s %(now)s' % locals()
yield '%(label)s.count %(count)s %(now)s' % locals()
def _clear_data(self):
for d in (self._count_data, self._timing_data):
for key in d.keys():
del d[key]
def aggregate_flush(self):
try:
if not self._count_data and not self._timing_data:
return
counts = '\n'.join(self._generate_counts()) + '\n'
timings = '\n'.join(self._generate_timings()) + '\n'
if self.debug:
if self._count_data:
print 'writing counts:'
print repr(counts)
if self._timing_data:
print 'writing timings:'
print repr(timings)
csock = socket.socket()
csock.connect((CARBON_SERVER, CARBON_PORT,))
try:
csock.sendall(counts)
csock.sendall(timings)
finally:
csock.close()
self._clear_data()
finally:
eventlet.spawn_after(AGGREGATE_TIMEOUT, self.aggregate_flush)
class StatsHandler(SocketServer.DatagramRequestHandler):
def handle(self):
data = self.request[0].strip()
if not data:
return
chunks = data.split(' ')
if not len(chunks) == 3:
return
label, value, tstamp = chunks[0], chunks[1], float(chunks[2])
if self.server.debug:
print '<<handle>> %s %s %s' % (label, value, tstamp)
stats = self.server._count_data
# values of "1235|s" are to be consider *timings* instead of counts
if value[-2:] == '|s':
stats = self.server._timing_data
value = value[:-2]
value = float(value)
if not stats.has_key(label):
stats[label] = []
stats[label].append((value, tstamp))
class DebugStatsServer(StatsServer):
debug = True
def main():
options = optparse.OptionParser()
options.add_option('-d', '--debug', action='store_true',
dest='debug', help='Turn on aggregated debug statements')
opts, args = options.parse_args()
klass = StatsServer
if opts.debug:
klass = DebugStatsServer
server = klass(('', 22034,), StatsHandler)
print '>> Starting server on port 22034'
print
server.serve_forever()
return 0
if __name__ == '__main__':
sys.exit(main())