Http Response Time monitoring

I have found nice plugin http_response_time, which worked fine for https://example.com URLs.

Problems started, when I wanted to monitor some http and some https websites.

 

Here is small modification of http_response_time plugin, which will allow you to monitor both types of protocols.

The modification is marked with bold:

 

#!/usr/bin/env python

#

# Copyright (c) 2009, devdoodles

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are

# met:

#

#     * Redistributions of source code must retain the above copyright

#       notice, this list of conditions and the following disclaimer.

#

#     * Redistributions in binary form must reproduce the above

#       copyright notice, this list of conditions and the following

#       disclaimer in the documentation and/or other materials provided

#       with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 

import httplib

import os

import socket

import sys

import time

import urlparse

 

request_timeout = os.getenv('request_timeout') or 10

socket.setdefaulttimeout(float(request_timeout))

 

def load_urls():

    urls = []

    n = 1

    while 1:

        url = os.getenv("url%s_url" % n)

        if not url: break

        data = { 'url': url }

        for v in ('name', 'label', 'timeout', 'warning', 'critical'):

            data[v] = os.getenv("url%s_%s" % (n, v))

        urls.append(data)

        n += 1

    return urls

 

def do_request(protocol, dest, host, path):

    if (protocol.startswith('https')):

       conn = httplib.HTTPSConnection(dest)

    else:

       conn = httplib.HTTPConnection(dest)

    conn.request('GET', path, headers={ 'Host': host })

    resp = conn.getresponse()

    data = resp.read()

    conn.close()

    return resp.status

 

urls = load_urls()

 

if len(sys.argv) > 1 and sys.argv[1] == 'config':

    title = os.getenv("graph_title") or "Response time"

    category = os.getenv("graph_category")

    draw = os.getenv("draw")

    if category: print "graph_category %s" % (category,)

    print "graph_title %s" % (title,)

    print "graph_vlabel Time (seconds)"

    print "graph_args --lower-limit 0"

    for url in urls:

        if draw: print "%s.draw %s" % (url['name'], draw)

        for v in ('label', 'warning', 'critical'):

            if url[v]: print "%s.%s %s" % (url['name'], v, url[v])

    sys.exit(0)

 

for url in urls:

    o = urlparse.urlparse(url['url'])

    try:

       t1 = time.time()

       status = do_request(o[0], o[1], o[1], o[2])

       t2 = time.time()

       if status == 200:

         print "%s.value %.2f" % (url['name'], t2 - t1)

       else:

         print "%s.value U %s" % (url['name'],status)

    except socket.timeout:

        print "%s.value %s" % (url['name'], request_timeout)

    except:

        print "%s.value U" % (url['name'],)