Munin contributed plugins

#!/usr/bin/env python3

"""

=head1 NAME

nova_floating_ips - monitor status of Floating IPs in Nova

=head1 CONFIGURATION

To monitor a floating ips, link floating_ips to this file.

E.g.

 ln -s /usr/share/munin/plugins/nova_floating_ips /etc/munin/plugins/

Needs following minimal configuration in plugin-conf.d/nova:

 [nova_*]

 user nova

=head1 AUTHORS

Copyright 2012 Mehdi Abaakouk <sileht@sileht.net>

=head1 MAGIC MARKERS

 #%# capabilities=autoconf

 #%# family=auto

=cut

"""

import sys

try:

    from nova import context

    from nova import db

    from nova import flags

    from nova import utils

except ImportError:

    successful_import = False

else:

    successful_import = True

states = ['total', 'allocated', 'associated']

def print_config():

    global states

    print('graph_title Nova Floating IPs')

    print('graph_vlabel IPs')

    print('graph_args --base 1000 --lower-limit 0')

    print('graph_category cloud')

    print('graph_scale no')

    print('graph_info This graph shows the number of Floating IPs in Nova and their status')

    for state in states:

        print('%s.label %s' % (state, state))

        print('%s.draw LINE2' % state)

        print('%s.info %s IPs' % (state, state))

def get_status():

    status = {}

    for k in states:

        status[k] = 0

    ctxt = context.get_admin_context()

    floating_ips = db.floating_ip_get_all(ctxt)

    for floating_ip in floating_ips:

        status['total'] += 1

        if floating_ip['fixed_ip_id']:

            status['associated'] += 1

        if floating_ip['project_id']:

            status['allocated'] += 1

    return status

def print_values():

    status = get_status()

    for (state, value) in status.items():

        print("%s.value %s" % (state, value))

if __name__ == '__main__':

    if len(sys.argv) > 1:

        if sys.argv[1] == "config":

            print_config()

        elif sys.argv[1] == "autoconf":

            if not successful_import:

                print('no (failed import nova module)')

                sys.exit(0)

            else:

                print('yes')

    elif successful_import:

        utils.default_flagfile()

        flags.FLAGS(sys.argv)

        print_values()