![Julien Danjou](/assets/img/avatar_default.png)
This option is not needed as you can pass the option into the MongoDB URL. Change-Id: Ic549e7d0da6cdff5babaae58ff0b823122e00fbf
111 lines
4.1 KiB
Python
111 lines
4.1 KiB
Python
#
|
|
# Copyright 2012 New Dream Network, LLC (DreamHost)
|
|
# Copyright 2013 eNovance
|
|
# Copyright 2014-2015 Red Hat, Inc
|
|
#
|
|
# Authors: Doug Hellmann <doug.hellmann@dreamhost.com>
|
|
# Julien Danjou <julien@danjou.info>
|
|
# Eoghan Glynn <eglynn@redhat.com>
|
|
#
|
|
# 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.
|
|
"""MongoDB storage backend"""
|
|
|
|
from oslo_log import log
|
|
import pymongo
|
|
|
|
from aodh import storage
|
|
from aodh.storage.mongo import utils as pymongo_utils
|
|
from aodh.storage import pymongo_base
|
|
|
|
LOG = log.getLogger(__name__)
|
|
|
|
|
|
class Connection(pymongo_base.Connection):
|
|
"""Put the alarm data into a MongoDB database."""
|
|
|
|
CONNECTION_POOL = pymongo_utils.ConnectionPool()
|
|
|
|
def __init__(self, conf, url):
|
|
self.conf = conf
|
|
# NOTE(jd) Use our own connection pooling on top of the Pymongo one./
|
|
# We need that otherwise we overflow the MongoDB instance with new
|
|
# connection since we instantiate a Pymongo client each time someone
|
|
# requires a new storage connection.
|
|
self.conn = self.CONNECTION_POOL.connect(
|
|
url,
|
|
conf.database.max_retries,
|
|
conf.database.retry_interval)
|
|
|
|
# Require MongoDB 2.4 to use $setOnInsert
|
|
if self.conn.server_info()['versionArray'] < [2, 4]:
|
|
raise storage.StorageBadVersion("Need at least MongoDB 2.4")
|
|
|
|
connection_options = pymongo.uri_parser.parse_uri(url)
|
|
self.db = getattr(self.conn, connection_options['database'])
|
|
if connection_options.get('username'):
|
|
self.db.authenticate(connection_options['username'],
|
|
connection_options['password'])
|
|
|
|
# NOTE(jd) Upgrading is just about creating index, so let's do this
|
|
# on connection to be sure at least the TTL is correctly updated if
|
|
# needed.
|
|
self.upgrade()
|
|
|
|
@staticmethod
|
|
def update_ttl(ttl, ttl_index_name, index_field, coll):
|
|
"""Update or ensure time_to_live indexes.
|
|
|
|
:param ttl: time to live in seconds.
|
|
:param ttl_index_name: name of the index we want to update or ensure.
|
|
:param index_field: field with the index that we need to update.
|
|
:param coll: collection which indexes need to be updated.
|
|
"""
|
|
indexes = coll.index_information()
|
|
if ttl <= 0:
|
|
if ttl_index_name in indexes:
|
|
coll.drop_index(ttl_index_name)
|
|
return
|
|
|
|
if ttl_index_name in indexes:
|
|
return coll.database.command(
|
|
'collMod', coll.name,
|
|
index={'keyPattern': {index_field: pymongo.ASCENDING},
|
|
'expireAfterSeconds': ttl})
|
|
|
|
coll.ensure_index([(index_field, pymongo.ASCENDING)],
|
|
expireAfterSeconds=ttl,
|
|
name=ttl_index_name)
|
|
|
|
def upgrade(self):
|
|
super(Connection, self).upgrade()
|
|
# Establish indexes
|
|
ttl = self.conf.database.alarm_history_time_to_live
|
|
self.update_ttl(
|
|
ttl, 'alarm_history_ttl', 'timestamp', self.db.alarm_history)
|
|
|
|
def clear(self):
|
|
self.conn.drop_database(self.db.name)
|
|
# Connection will be reopened automatically if needed
|
|
self.conn.close()
|
|
|
|
def clear_expired_alarm_history_data(self, alarm_history_ttl):
|
|
"""Clear expired alarm history data from the backend storage system.
|
|
|
|
Clearing occurs according to the time-to-live.
|
|
|
|
:param alarm_history_ttl: Number of seconds to keep alarm history
|
|
records for.
|
|
"""
|
|
LOG.debug("Clearing expired alarm history data is based on native "
|
|
"MongoDB time to live feature and going in background.")
|