Munin contributed plugins

#!/usr/bin/env python3

"""

=head1 NAME

approx - monitor the amount of packages in an approx cache

=head1 CONFIGURATION

Usage: place in /etc/munin/plugins/ (or link it there using ln -s)

Parameters understood:

 config   (required)

 autoconf (optional - used by munin-config)

=head1 AUTHORS

Copyright 2008 Morten Siebuhr <unknown@munin-monitoring.org>

=head1 MAGIC MARKERS

 #%# family=manual

 #%# capabilities=autoconf

=cut

"""

from os.path import walk, exists, isfile, join

from sys import argv, exit

def get_file_types():

    """Returns an array of filetype => count."""

    out = {}

    def visitor(arg, dirname, names):

        for filename in names:

            if not isfile(join(dirname, filename)):

                continue

            ext = filename.split(".")[-1].lower()

            out[ext] = out.get(ext, 0) + 1

    walk('/var/cache/approx/', visitor, None)

    return out

if len(argv) > 1:

    # Autoconfiguration

    if argv[1] == "autoconf":

        # Test if we can find a approx cache

        if exists('/var/cache/approx'):

            print("yes")

        else:

            print("no ('/var/cache/approx' not found)")

        exit()

    elif argv[1] == "config":

        print("graph_title Approx cache")

        print("graph yes")

        print("graph_category loadbalancer")

        print("graph_info Statistics from the Approx cache.")

        for filetype in get_file_types().keys():

            print("%s.label %s" % (filetype.lower(), filetype))

        exit()

for filetype, count in get_file_types().items():

    print("%s.value %d" % (filetype.lower(), count))

exit()