A python script that pings a host and uploads metrics to Librato

librato-ping.py

import re
import librato
from sh import ping, hostname

host = 'google.com'
# How many pings should we do before we process the results
ping_for = '30'
# How many times should we ping, process results, and send to Librato
repeat = 2
liberato_token = '<censored>'

# Edit lines above, leave the rest.
i_am = hostname().strip()


def ping_and_send():
    result = ping('-w', ping_for, '-i', '1', host)

    # `result` will have lines like "64 bytes from (172.217.0.142): icmp_seq=1 ttl=48 time=65.0 ms".
    matches = re.findall('time=(\d+(.\d+)?) ms', str(result), re.MULTILINE)
    # Parse values from "time=(...) ms" sections of the result and convert to floats.
    times = [float(line_groups[0]) for line_groups in matches]

    # Calculate values to send to librato.
    ping_avg = sum(times) / len(times)
    ping_min = min(times)
    ping_max = max(times)

    # Send to Librato.
    tags = dict(from_host=i_am, to_host=host)
    api = librato.connect('<censored>', liberato_token, tags=tags)
    with api.new_queue() as q:
        q.add('ping.min', ping_min)
        q.add('ping.max', ping_max)
        q.add('ping.avg', ping_avg)

    print('sent stats')


for x in range(0, repeat):
    ping_and_send()