#!/usr/bin/env python
# -*- encoding: utf-8 -*-
#
# Swift dispersion monitoring script for Nagios
#
# Copyright © 2012 eNovance <licensing@enovance.com>
#
# Author: Julien Danjou <julien@danjou.info>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

# Modified by Sara Bertocco (sara_dot_bertocco_at_pd_dot_infn_dot_it) 2014/10/14


import os
import sys
import json

STATE_OK=0
STATE_WARNING=1
STATE_CRITICAL=2
STATE_UNKNOWN=3
STATE_DEPENDENT=4

with os.popen("swift-dispersion-report -j %s" \
                  % os.getenv("SWIFT_DISPERSION_CONFIG", "/etc/swift/dispersion.conf")) as report:
    stats = json.load(report)

msgs = []
state = STATE_OK

# type_ is either "objects", "container"
for type_, values in stats.iteritems():

    if values['pct_found'] == 100.0:
        msgs.append("%.2f%% %ss copies found" % (values['pct_found'], type_))
        state = max(state, STATE_OK)

    if values['pct_found'] < 90.00:
        msgs.append("%.2f%% %ss copies found" % (values['pct_found'], type_))
        state = max(state, STATE_WARNING)

    if values['pct_found'] < 80.00:
        msgs.append("%.2f%% %ss copies found" % (values['pct_found'], type_))
        state = max(state, STATE_CRITICAL)

print ", ".join(msgs)
sys.exit(state)