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Diffstat (limited to 'bin/instance-usage-audit')
| -rwxr-xr-x | bin/instance-usage-audit | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/bin/instance-usage-audit b/bin/instance-usage-audit new file mode 100755 index 000000000..a06c6b1b3 --- /dev/null +++ b/bin/instance-usage-audit @@ -0,0 +1,116 @@ +#!/usr/bin/env python +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2011 Openstack, LLC. +# All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + +"""Cron script to generate usage notifications for instances neither created + nor destroyed in a given time period. + + Together with the notifications generated by compute on instance + create/delete/resize, over that ime period, this allows an external + system consuming usage notification feeds to calculate instance usage + for each tenant. + + Time periods are specified like so: + <number>[mdy] + + 1m = previous month. If the script is run April 1, it will generate usages + for March 1 thry March 31. + 3m = 3 previous months. + 90d = previous 90 days. + 1y = previous year. If run on Jan 1, it generates usages for + Jan 1 thru Dec 31 of the previous year. +""" + +import datetime +import gettext +import os +import sys +import time + +# If ../nova/__init__.py exists, add ../ to Python search path, so that +# it will override what happens to be installed in /usr/(local/)lib/python... +POSSIBLE_TOPDIR = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]), + os.pardir, + os.pardir)) +if os.path.exists(os.path.join(POSSIBLE_TOPDIR, 'nova', '__init__.py')): + sys.path.insert(0, POSSIBLE_TOPDIR) + +gettext.install('nova', unicode=1) + + +from nova import context +from nova import db +from nova import exception +from nova import flags +from nova import log as logging +from nova import utils + +from nova.notifier import api as notifier_api + +FLAGS = flags.FLAGS +flags.DEFINE_string('instance_usage_audit_period', '1m', + 'time period to generate instance usages for.') + + +def time_period(period): + today = datetime.date.today() + unit = period[-1] + if unit not in 'mdy': + raise ValueError('Time period must be m, d, or y') + n = int(period[:-1]) + if unit == 'm': + year = today.year - (n // 12) + n = n % 12 + if n >= today.month: + year -= 1 + month = 12 + (today.month - n) + else: + month = today.month - n + begin = datetime.datetime(day=1, month=month, year=year) + end = datetime.datetime(day=1, month=today.month, year=today.year) + + elif unit == 'y': + begin = datetime.datetime(day=1, month=1, year=today.year - n) + end = datetime.datetime(day=1, month=1, year=today.year) + + elif unit == 'd': + b = today - datetime.timedelta(days=n) + begin = datetime.datetime(day=b.day, month=b.month, year=b.year) + end = datetime.datetime(day=today.day, + month=today.month, + year=today.year) + + return (begin, end) + +if __name__ == '__main__': + utils.default_flagfile() + flags.FLAGS(sys.argv) + logging.setup() + begin, end = time_period(FLAGS.instance_usage_audit_period) + print "Creating usages for %s until %s" % (str(begin), str(end)) + instances = db.instance_get_active_by_window(context.get_admin_context(), + begin, + end) + print "%s instances" % len(instances) + for instance_ref in instances: + usage_info = utils.usage_from_instance(instance_ref, + audit_period_begining=str(begin), + audit_period_ending=str(end)) + notifier_api.notify('compute.%s' % FLAGS.host, + 'compute.instance.exists', + notifier_api.INFO, + usage_info) |