watcher.py

import requests
from socket import socket
import time

URLS = [("wiki.", "http://wiki.ccnmtl.columbia.edu/"),
        ("jtsa.", "http://learn.jtsa.edu/"),
        ("polarhub.", "http://thepolarhub.org/"),
        ("edblogs.", "http://edblogs.columbia.edu/"),
        ]
CARBON_HOST = "nanny.cul.columbia.edu"
CARBON_PORT = 2003
PREFIX = "ccnmtl.app.gauges.watcher"

for (identifier, URL) in URLS:
    r = requests.get(URL)
    delta = int(1000. * r.elapsed.total_seconds())
    now = int(time.time())

    message = """%s.%sstatus_code %d %d
%s.%stime %d %d
%s.%schars %d %d
    """ % (PREFIX, identifier, r.status_code, now,
           PREFIX, identifier, delta, now,
           PREFIX, identifier, len(r.text), now)

    print message

    sock = socket()
    try:
        sock.connect((CARBON_HOST, CARBON_PORT))
    except:
        print "couldn't send metrics to carbon"
        sys.exit(1)

    sock.sendall(message)