0e26faeb69
Enabled H306 in tox.ini and corrected the import order. Change-Id: If77984e8c62b0ec0cfb3d068e9c1b0d4d7c3583d
147 lines
4.7 KiB
Python
147 lines
4.7 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2012 New Dream Network, LLC (DreamHost)
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#
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# Author: Doug Hellmann <doug.hellmann@dreamhost.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Storage backend management
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"""
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import urlparse
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from oslo.config import cfg
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from stevedore import driver
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from ceilometer.openstack.common import log
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from ceilometer import service
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from ceilometer import utils
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LOG = log.getLogger(__name__)
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STORAGE_ENGINE_NAMESPACE = 'ceilometer.storage'
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OLD_STORAGE_OPTS = [
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cfg.StrOpt('database_connection',
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secret=True,
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default=None,
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help='DEPRECATED - Database connection string',
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),
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]
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cfg.CONF.register_opts(OLD_STORAGE_OPTS)
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STORAGE_OPTS = [
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cfg.IntOpt('time_to_live',
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default=-1,
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help="""number of seconds that samples are kept
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in the database for (<= 0 means forever)"""),
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]
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cfg.CONF.register_opts(STORAGE_OPTS, group='database')
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cfg.CONF.import_opt('connection',
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'ceilometer.openstack.common.db.sqlalchemy.session',
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group='database')
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class StorageBadVersion(Exception):
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"""Error raised when the storage backend version is not good enough."""
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def get_engine(conf):
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"""Load the configured engine and return an instance."""
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if conf.database_connection:
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conf.set_override('connection', conf.database_connection,
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group='database')
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engine_name = urlparse.urlparse(conf.database.connection).scheme
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LOG.debug('looking for %r driver in %r',
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engine_name, STORAGE_ENGINE_NAMESPACE)
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mgr = driver.DriverManager(STORAGE_ENGINE_NAMESPACE,
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engine_name,
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invoke_on_load=True)
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return mgr.driver
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def get_connection(conf):
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"""Return an open connection to the database."""
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return get_engine(conf).get_connection(conf)
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class SampleFilter(object):
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"""Holds the properties for building a query from a meter/sample filter.
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:param user: The sample owner.
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:param project: The sample project.
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:param start: Earliest time point in the request.
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:param start_timestamp_op: Earliest timestamp operation in the request.
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:param end: Latest time point in the request.
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:param end_timestamp_op: Latest timestamp operation in the request.
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:param resource: Optional filter for resource id.
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:param meter: Optional filter for meter type using the meter name.
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:param source: Optional source filter.
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:param metaquery: Optional filter on the metadata
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"""
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def __init__(self, user=None, project=None,
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start=None, start_timestamp_op=None,
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end=None, end_timestamp_op=None,
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resource=None, meter=None,
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source=None, metaquery={}):
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self.user = user
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self.project = project
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self.start = utils.sanitize_timestamp(start)
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self.start_timestamp_op = start_timestamp_op
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self.end = utils.sanitize_timestamp(end)
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self.end_timestamp_op = end_timestamp_op
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self.resource = resource
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self.meter = meter
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self.source = source
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self.metaquery = metaquery
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class EventFilter(object):
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"""Properties for building an Event query.
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:param start: UTC start datetime (mandatory)
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:param end: UTC end datetime (mandatory)
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:param event_name: the name of the event. None for all.
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:param traits: the trait filter dict, all of which are optional
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{'key': <key>,
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't_string': <value>,
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't_int': <value>,
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't_datetime': <value>
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't_float': <value>}
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currently, only one trait dict is supported.
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"""
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def __init__(self, start, end, event_name=None, traits={}):
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self.start = utils.sanitize_timestamp(start)
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self.end = utils.sanitize_timestamp(end)
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self.event_name = event_name
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self.traits = traits
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def dbsync():
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service.prepare_service()
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get_connection(cfg.CONF).upgrade()
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def expirer():
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service.prepare_service()
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LOG.debug("Clearing expired metering data")
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storage_conn = get_connection(cfg.CONF)
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storage_conn.clear_expired_metering_data(
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cfg.CONF.database.time_to_live)
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