Munin contributed plugins

#!/usr/bin/env python

#

# Plugin to monitor used size of a tenant in glance

#

# To monitor the used size of a tenant in glance do:

# E.g.

#    ln -s /usr/share/munin/plugins/glance_size_ /etc/munin/plugins/glance_size_<tenant_uuid>

#

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

#   [glance_*]

#   user glance

#

# Magic markers

#%# capabilities=autoconf

#%# family=auto

import sys

import os

try:

    from sqlalchemy.orm import exc, joinedload

    from glance.common.cfg import CommonConfigOpts

    from glance.registry.db import models

    from glance.registry.db.api import get_session, configure_db

except ImportError:

    successful_import = False

else:

    successful_import = True

def load_conf():

    CONF = CommonConfigOpts(project="glance", prog="glance-registry")

    CONF()

    # Hide missing logger warning message

    sys.stderr = open(os.devnull, 'w')

    configure_db(CONF)

    sys.stderr = sys.__stderr__

possible_status = [ 'queued', 'saving', 'active', 'killed', 'deleted', 'pending_delete' ]

def print_config():

    print 'graph_title Glance images status'

    print 'graph_vlabel images'

    print 'graph_args --lower-limit 0'

    print 'graph_category cloud'

    print 'graph_scale no'

    print 'graph_info This graph show number of images by status'

    for status in possible_status:

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

        print '%s.draw LINE2' % status

        print '%s.info %s image(s)' % (status, status)

def request(**kwargs):

    session = get_session()

    try:

        query = session.query(models.Image).\

                        options(joinedload(models.Image.properties)).\

                        options(joinedload(models.Image.members))

        if kwargs:

           query = query.filter_by(**kwargs)

        images = query.all()

    except exc.NoResultFound:

        return []

    return images

def print_values():

    images = request()

    n_image_by_status = {}

    for image in images:

        n_image_by_status[image["status"]] = n_image_by_status.get(image["status"], 0) + 1

    for status in possible_status:

        print '%s.value %s' % (status, n_image_by_status.get(status, 0))

if __name__ == '__main__':

    argv = sys.argv[:]

    if len(argv) > 1:

        if argv[1] == 'config':

            print_config()

        elif argv[1] == 'autoconf':

            if not successful_import:

                print 'no (failed import glance and/or sqlachemy module)'

                sys.exit(0)

            try:

                load_conf()

                get_session()

            except:

                print 'no (failed to connect glance backend, check user)'

                sys.exit(0)

            print 'yes'

    elif successful_import:

        load_conf()

        print_values()