Munin contributed plugins

#!/usr/bin/env python

"""=cut

=head1 NAME 

 imapproxy  - Munin multigraph plugin to monitor imapproxy using pimpstat

=head1 CONFIGURATION

 This plugin should require no addition configuration.

=head1 MAGIC MARKERS

  #%# family=auto

  #%# capabilities=autoconf

=head1 Author

Niall Donegan <github@nialldonegan.me>

=head1 LICENSE

GPLv2

=cut"""

import sys

import os

import re

from subprocess import Popen,PIPE

def print_autoconf():

    which = Popen("which pimpstat", shell=True, stdout=PIPE)

    which.communicate()

    if not bool(which.returncode):

        print "yes"

    else:

        print "no (pimpstat not found)"

    sys.exit(0)

def print_config():

    print "multigraph imapproxy_cache"

    print "graph_title Cache Statistics For ImapProxy"

    print "graph_args -l 0 --base 1000"

    print "graph_total total"

    print "graph_vlabel Cache Connections / ${graph_period}"

    print "graph_category imapproxy"

    print "cache_hits.draw AREA"

    print "cache_hits.type DERIVE"

    print "cache_hits.label Cache Hits"

    print "cache_hits.min 0"

    print "cache_misses.draw STACK"

    print "cache_misses.type DERIVE"

    print "cache_misses.label Cache Misses"

    print "cache_misses.min 0"

    print 

    print "multigraph imapproxy_connections"

    print "graph_title Connection Statistics For ImapProxy"

    print "graph_args -l 0 --base 1000"

    print "graph_total total"

    print "graph_vlabel Connections / ${graph_period}"

    print "graph_category imapproxy"

    print "connections_reused.draw AREA"

    print "connections_reused.type DERIVE"

    print "connections_reused.label Reused Connections"

    print "connections_reused.min 0"

    print "connections_created.draw STACK"

    print "connections_created.type DERIVE"

    print "connections_created.label Created Connections"

    print "connections_created.min 0"

    sys.exit(0)

def print_fetch():

    cache_hits = 0

    cache_misses = 0

    connections_created = 0

    connections_reused = 0

    connections = Popen(

        "pimpstat -c | egrep '(Total (Reused|Created)|Cache (Hits|Misses))'", 

        shell=True,

        stdout=PIPE

    )

    for line in connections.stdout:

        if re.search(r'Hits', line):

            cache_hits = line.split()[0]

        if re.search(r'Misses', line):

            cache_misses = line.split()[0]

        if re.search(r'Created', line):

            connections_created = line.split()[0]

        if re.search(r'Reused', line):

            connections_reused = line.split()[0]

    print "multigraph imapproxy_cache"

    print "cache_hits.value %s" % cache_hits

    print "cache_misses.value %s" % cache_misses

    print

    print "multigraph imapproxy_connections"

    print "connections_created.value %s" % connections_created

    print "connections_reused.value %s" % connections_reused

    sys.exit(0)

def main():

    if len(sys.argv) > 1:

        command = sys.argv[1]

    else:

        command = "fetch"

    if command not in ["autoconf","config","fetch"]:

        print >> sys.stderr, "Command %s not known, please use either autoconf or suggest" % command

        sys.exit(1)

    if command == "autoconf":

        print_autoconf()

    elif command == "config":

        print_config()

    else:

        print_fetch()

if __name__ == '__main__':

    main()

# vim:syntax=python