| Current Path : /usr/share/dstat/ |
Linux gator3171.hostgator.com 4.19.286-203.ELK.el7.x86_64 #1 SMP Wed Jun 14 04:33:55 CDT 2023 x86_64 |
| Current File : //usr/share/dstat/dstat_ntp.py |
### Author: Dag Wieers <dag@wieers.com>
global socket
import socket
global struct
import struct
### FIXME: Implement millisecond granularity as well
### FIXME: Interrupts socket if data is overdue (more than 250ms ?)
class dstat_plugin(dstat):
"""
Time from an NTP server.
BEWARE: this dstat plugin typically takes a lot longer to run than
system plugins and for that reason it is important to use an NTP server
located nearby as well as make sure that it does not impact your other
counters too much.
"""
def __init__(self):
self.name = 'ntp'
self.nick = ('date/time',)
self.vars = ('time',)
self.timefmt = os.getenv('DSTAT_TIMEFMT') or '%d-%m %H:%M:%S'
self.ntpserver = os.getenv('DSTAT_NTPSERVER') or '0.fedora.pool.ntp.org'
self.type = 's'
self.width = len(time.strftime(self.timefmt, time.localtime()))
self.scale = 0
self.epoch = 2208988800L
# socket.setdefaulttimeout(0.25)
self.socket = socket.socket( socket.AF_INET, socket.SOCK_DGRAM )
self.socket.settimeout(0.25)
def gettime(self):
self.socket.sendto( '\x1b' + 47 * '\0', ( self.ntpserver, 123 ))
data, address = self.socket.recvfrom(1024)
return struct.unpack( '!12I', data )[10] - self.epoch
def check(self):
try:
self.gettime()
except socket.gaierror:
raise Exception, 'Failed to connect to NTP server %s.' % self.ntpserver
except socket.error:
raise Exception, 'Error connecting to NTP server %s.' % self.ntpserver
def extract(self):
try:
self.val['time'] = time.strftime(self.timefmt, time.localtime(self.gettime()))
except:
self.val['time'] = theme['error'] + '-'.rjust(self.width-1) + ' '
def showcsv(self):
return time.strftime(self.timefmt, time.localtime(self.gettime()))
# vim:ts=4:sw=4:et