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
|
import logging
import os
import time
from contextlib import contextmanager
_client = None
_log = logging.getLogger(__name__)
def init():
global _client
statsd_host = os.environ.get('FLANKER_METRICS_HOST')
statsd_port = os.environ.get('FLANKER_METRICS_PORT')
statsd_prfx = os.environ.get('FLANKER_METRICS_PREFIX')
if not statsd_host or not statsd_port or not statsd_prfx:
return
try:
import statsd
except ImportError:
return
_client = statsd.StatsClient(statsd_host, statsd_port, prefix=statsd_prfx)
def incr(key, increment=1):
global _client
if _client:
if increment < 0:
_client.decr(key, increment)
else:
_client.incr(key, increment)
else:
# This hacky way of trying to initialize client, because flanker
# gets imported way before the application has a chance to set the
# environment variables for metrics.
if _client is None:
_client = False
init()
incr(key, increment)
@contextmanager
def timer(metric_name):
if _client:
t = time.time()
yield
_client.timing(metric_name, (time.time() - t) * 1000, 1)
else:
yield
|
