69 lines
2.0 KiB
Python
69 lines
2.0 KiB
Python
# Copyright (c) 2014 Rackspace, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Cassandra storage driver implementation."""
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from cassandra.cluster import Cluster
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from poppy.common import decorators
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from poppy.openstack.common import log as logging
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from poppy.storage import base
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from poppy.storage.cassandra import controllers
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from oslo.config import cfg
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LOG = logging.getLogger(__name__)
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CASSANDRA_OPTIONS = [
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cfg.ListOpt('cluster', help='Cassandra Cluster contact points'),
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cfg.StrOpt('keyspace', default='poppy',
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help='Keyspace for all queries made in session'),
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]
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CASSANDRA_GROUP = 'drivers:storage:cassandra'
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def _connection(conf):
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cluster = Cluster(conf.cluster)
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session = cluster.connect(conf.keyspace)
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return session
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class CassandraStorageDriver(base.Driver):
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def __init__(self, conf):
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super(CassandraStorageDriver, self).__init__(conf)
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self._conf.register_opts(CASSANDRA_OPTIONS,
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group=CASSANDRA_GROUP)
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self.cassandra_conf = self._conf[CASSANDRA_GROUP]
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def is_alive(self):
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return True
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@decorators.lazy_property(write=False)
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def connection(self):
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"""Cassandra connection instance."""
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return _connection(self.cassandra_conf)
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@decorators.lazy_property(write=False)
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def service_controller(self):
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return controllers.ServicesController(self)
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@decorators.lazy_property(write=False)
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def service_database(self):
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return self.connection
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