ecce97fd03
This patch plumbs storage drivers so they all get a cache instance they can use at their discretion. I decided to make cache a required param to the initializers, since any deployment of Marconi of any significance would likely opt to enable caching anyway, and the cache library has a default in-memory backend that can be used for simple deployments. Note also that both data- and control-plane drivers receive a cache instance, even though the sharding controllers will not use it (caching will be done in the sharding data driver instead.) I thought it would be better to pass cache in both cases so we can share test code and avoid complicating utils.load_storage_driver(). Also, the control driver may eventually support operations other than sharding; cache may come in handy then. Change-Id: I647791af0d7a5914c30cb2489033ec650a455370 Signed-off-by: kgriffs <kurt.griffiths@rackspace.com>
108 lines
2.8 KiB
Python
108 lines
2.8 KiB
Python
# Copyright (c) 2013 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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from marconi.queues import storage
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class DataDriver(storage.DataDriverBase):
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def __init__(self, conf, cache):
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super(DataDriver, self).__init__(conf, cache)
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@property
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def default_options(self):
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return {}
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def is_alive(self):
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raise NotImplementedError()
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@property
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def queue_controller(self):
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return QueueController(self)
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@property
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def message_controller(self):
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return MessageController(self)
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@property
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def claim_controller(self):
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return None
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class ControlDriver(storage.ControlDriverBase):
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def __init__(self, conf, cache):
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super(ControlDriver, self).__init__(conf, cache)
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@property
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def catalogue_controller(self):
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return None
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@property
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def shards_controller(self):
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return None
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class QueueController(storage.QueueBase):
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def __init__(self, driver):
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pass
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def list(self, project=None):
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raise NotImplementedError()
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def get_metadata(self, name, project=None):
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raise NotImplementedError()
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def create(self, name, project=None):
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raise NotImplementedError()
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def exists(self, name, project=None):
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raise NotImplementedError()
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def set_metadata(self, name, metadata, project=None):
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raise NotImplementedError()
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def delete(self, name, project=None):
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raise NotImplementedError()
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def stats(self, name, project=None):
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raise NotImplementedError()
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class MessageController(storage.MessageBase):
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def __init__(self, driver):
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pass
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def first(self, queue_name, project=None, sort=1):
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raise NotImplementedError()
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def get(self, queue, message_id, project=None):
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raise NotImplementedError()
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def bulk_get(self, queue, message_ids, project=None):
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raise NotImplementedError()
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def list(self, queue, project=None, marker=None,
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limit=None, echo=False, client_uuid=None):
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raise NotImplementedError()
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def post(self, queue, messages, project=None):
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raise NotImplementedError()
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def delete(self, queue, message_id, project=None, claim=None):
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raise NotImplementedError()
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def bulk_delete(self, queue, message_ids, project=None):
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raise NotImplementedError()
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