128 lines
4.2 KiB
Python
128 lines
4.2 KiB
Python
#
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# Copyright 2012 New Dream Network, LLC (DreamHost)
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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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from oslo_config import cfg
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from oslo_log import log
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import six
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import six.moves.urllib.parse as urlparse
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from stevedore import driver
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import tenacity
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from panko import utils
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LOG = log.getLogger(__name__)
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OPTS = [
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cfg.IntOpt('event_time_to_live',
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default=-1,
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help=("Number of seconds that events are kept "
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"in the database for (<= 0 means forever).")),
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cfg.StrOpt('event_connection',
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secret=True,
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help='The connection string used to connect to the event '
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'database. (if unset, connection is used)'),
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]
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class StorageUnknownWriteError(Exception):
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"""Error raised when an unknown error occurs while recording."""
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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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class StorageBadAggregate(Exception):
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"""Error raised when an aggregate is unacceptable to storage backend."""
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code = 400
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class InvalidMarker(Exception):
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"""Invalid pagination marker parameters"""
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def get_connection_from_config(conf):
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retries = conf.database.max_retries
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@tenacity.retry(
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wait=tenacity.wait_fixed(conf.database.retry_interval),
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stop=(tenacity.stop_after_attempt(retries) if retries >= 0
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else tenacity.stop_never)
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)
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def _inner():
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url = (getattr(conf.database, 'event_connection') or
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conf.database.connection)
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return get_connection(url, conf)
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return _inner()
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def get_connection(url, conf):
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"""Return an open connection to the database."""
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connection_scheme = urlparse.urlparse(url).scheme
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# SqlAlchemy connections specify may specify a 'dialect' or
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# 'dialect+driver'. Handle the case where driver is specified.
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engine_name = connection_scheme.split('+')[0]
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# NOTE: translation not applied bug #1446983
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LOG.debug('looking for %(name)r driver in panko.storage',
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{'name': engine_name})
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mgr = driver.DriverManager('panko.storage', engine_name)
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return mgr.driver(url, conf)
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class EventFilter(object):
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"""Properties for building an Event query.
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:param start_timestamp: UTC start datetime (mandatory)
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:param end_timestamp: UTC end datetime (mandatory)
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:param event_type: the name of the event. None for all.
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:param message_id: the message_id of the event. None for all.
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:param admin_proj: the project_id of admin role. None if non-admin user.
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:param traits_filter: the trait filter dicts, all of which are optional.
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This parameter is a list of dictionaries that specify trait values:
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.. code-block:: python
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{'key': <key>,
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'string': <value>,
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'integer': <value>,
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'datetime': <value>,
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'float': <value>,
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'op': <eq, lt, le, ne, gt or ge> }
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"""
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def __init__(self, start_timestamp=None, end_timestamp=None,
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event_type=None, message_id=None, traits_filter=None,
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admin_proj=None):
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self.start_timestamp = utils.sanitize_timestamp(start_timestamp)
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self.end_timestamp = utils.sanitize_timestamp(end_timestamp)
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self.message_id = message_id
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self.event_type = event_type
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self.traits_filter = traits_filter or []
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self.admin_proj = admin_proj
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def __repr__(self):
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return ("<EventFilter(start_timestamp: %s,"
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" end_timestamp: %s,"
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" event_type: %s,"
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" traits: %s)>" %
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(self.start_timestamp,
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self.end_timestamp,
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self.event_type,
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six.text_type(self.traits_filter)))
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