aodh/ceilometer/storage/__init__.py
2013-06-11 18:28:40 +00:00

128 lines
4.0 KiB
Python

# -*- encoding: utf-8 -*-
#
# Copyright © 2012 New Dream Network, LLC (DreamHost)
#
# Author: Doug Hellmann <doug.hellmann@dreamhost.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.
"""Storage backend management
"""
import urlparse
from oslo.config import cfg
from stevedore import driver
from ceilometer.openstack.common import log
from ceilometer import utils
from ceilometer import service
LOG = log.getLogger(__name__)
STORAGE_ENGINE_NAMESPACE = 'ceilometer.storage'
STORAGE_OPTS = [
cfg.StrOpt('database_connection',
secret=True,
default=None,
help='DEPRECATED - Database connection string',
),
]
cfg.CONF.register_opts(STORAGE_OPTS)
cfg.CONF.import_opt('connection',
'ceilometer.openstack.common.db.sqlalchemy.session',
group='database')
def register_opts(conf):
"""Register any options for the storage system."""
p = get_engine(conf)
p.register_opts(conf)
def get_engine(conf):
"""Load the configured engine and return an instance."""
if conf.database_connection:
conf.set_override('connection', conf.database_connection,
group='database')
engine_name = urlparse.urlparse(conf.database.connection).scheme
LOG.debug('looking for %r driver in %r',
engine_name, STORAGE_ENGINE_NAMESPACE)
mgr = driver.DriverManager(STORAGE_ENGINE_NAMESPACE,
engine_name,
invoke_on_load=True)
return mgr.driver
def get_connection(conf):
"""Return an open connection to the database."""
engine = get_engine(conf)
engine.register_opts(conf)
db = engine.get_connection(conf)
return db
class SampleFilter(object):
"""Holds the properties for building a query from a meter/sample filter.
:param user: The sample owner.
:param project: The sample project.
:param start: Earliest timestamp to include.
:param end: Only include samples with timestamp less than this.
:param resource: Optional filter for resource id.
:param meter: Optional filter for meter type using the meter name.
:param source: Optional source filter.
:param metaquery: Optional filter on the metadata
"""
def __init__(self, user=None, project=None, start=None, end=None,
resource=None, meter=None, source=None, metaquery={}):
self.user = user
self.project = project
self.start = utils.sanitize_timestamp(start)
self.end = utils.sanitize_timestamp(end)
self.resource = resource
self.meter = meter
self.source = source
self.metaquery = metaquery
class EventFilter(object):
"""Properties for building an Event query.
:param start: UTC start datetime (mandatory)
:param end: UTC end datetime (mandatory)
:param event_name: the name of the event. None for all.
:param traits: the trait filter dict, all of which are optional
{'key': <key>,
't_string': <value>,
't_int': <value>,
't_datetime': <value>
't_float': <value>}
currently, only one trait dict is supported.
"""
def __init__(self, start, end, event_name=None, traits={}):
self.start = utils.sanitize_timestamp(start)
self.end = utils.sanitize_timestamp(end)
self.event_name = event_name
self.traits = traits
def dbsync():
service.prepare_service()
get_connection(cfg.CONF).upgrade()