-
Notifications
You must be signed in to change notification settings - Fork 0
/
utils.py
98 lines (84 loc) · 3.34 KB
/
utils.py
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
# Copyright (c) 2016 Uber Technologies, Inc.
#
# 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
# THE SOFTWARE.
import fcntl
import socket
import struct
import time
from .metrics import Metrics
class ErrorReporter(object):
"""
Reports errors by emitting metrics, and if logger is provided,
logging the error message once every log_interval_minutes
"""
def __init__(self, metrics, logger=None, log_interval_minutes=15):
self.logger = logger
self.log_interval_minutes = log_interval_minutes
self.metrics = metrics or Metrics()
self._last_error_reported_at = time.time()
def error(self, name, count, *args):
if self.metrics:
self.metrics.count(name, count)
if self.logger is None:
return
next_logging_deadline = \
self._last_error_reported_at + (self.log_interval_minutes * 60)
current_time = time.time()
if next_logging_deadline >= current_time:
# If we aren't yet at the next logging deadline
return
self.logger.error(*args)
self._last_error_reported_at = current_time
def get_boolean(string, default):
string = str(string).lower()
if string in ['false', '0', 'none']:
return False
elif string in ['true', '1']:
return True
else:
return default
def local_ip():
"""Get the local network IP of this machine"""
try:
ip = socket.gethostbyname(socket.gethostname())
except IOError:
ip = socket.gethostbyname('localhost')
if ip.startswith('127.'):
# Check eth0, eth1, eth2, en0, ...
interfaces = [
i + str(n) for i in ('eth', 'en', 'wlan') for n in xrange(3)
] # :(
for interface in interfaces:
try:
ip = interface_ip(interface)
break
except IOError:
pass
return ip
def interface_ip(interface):
"""Determine the IP assigned to us by the given network interface."""
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
return socket.inet_ntoa(
fcntl.ioctl(
sock.fileno(), 0x8915, struct.pack('256s', interface[:15])
)[20:24]
)
# Explanation:
# http://stackoverflow.com/questions/11735821/python-get-localhost-ip
# http://stackoverflow.com/questions/24196932/how-can-i-get-the-ip-address-of-eth0-in-python