Merge "Fix swift messages posting when pooling"
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cb1bde31ce
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@ -13,11 +13,9 @@
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from zaqar.storage.swift import claims
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from zaqar.storage.swift import messages
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from zaqar.storage.swift import queues
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from zaqar.storage.swift import subscriptions
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MessageController = messages.MessageController
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QueueController = queues.QueueController
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ClaimController = claims.ClaimController
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SubscriptionController = subscriptions.SubscriptionController
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@ -53,10 +53,6 @@ class DataDriver(storage.DataDriverBase):
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LOG.exception(e)
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return False
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@decorators.lazy_property(write=False)
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def queue_controller(self):
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return controllers.QueueController(self)
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@decorators.lazy_property(write=False)
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def message_controller(self):
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return controllers.MessageController(self)
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@ -205,9 +205,8 @@ class MessageController(storage.Message):
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pass
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def post(self, queue, messages, client_uuid, project=None):
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if not self._queue_ctrl.exists(queue, project):
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raise errors.QueueDoesNotExist(queue, project)
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# TODO(flwang): It would be nice if we can create a middleware in Swift
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# to accept a json list so that Zaqar can create objects in bulk.
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return [self._create_msg(queue, m, client_uuid, project)
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for m in messages]
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@ -225,9 +224,21 @@ class MessageController(storage.Message):
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'x-object-meta-clientid': str(client_uuid),
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'x-delete-after': msg['ttl']})
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except swiftclient.ClientException as exc:
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# NOTE(flwang): To avoid check the queue existence each time when
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# posting messages, let's catch the 404 and create the 'queue'
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# on demand.
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if exc.http_status == 404:
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raise errors.QueueDoesNotExist(queue, project)
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raise
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self._client.put_container(utils._message_container(queue,
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project))
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self._client.put_object(
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utils._message_container(queue, project),
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slug,
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contents=contents,
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content_type='application/json',
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headers={
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'x-object-meta-clientid': str(client_uuid),
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'x-delete-after': msg['ttl']})
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return slug
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def delete(self, queue, message_id, project=None, claim=None):
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@ -1,124 +0,0 @@
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy
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# 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 under
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# the License.
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import functools
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from oslo_serialization import jsonutils
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import swiftclient
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from zaqar import storage
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from zaqar.storage import errors
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from zaqar.storage.swift import utils
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class QueueController(storage.Queue):
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"""Implements queue resource operations with swift backend.
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Queues are scoped by project.
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queue -> Swift mapping:
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+----------------+---------------------------------------+
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| Attribute | Storage location |
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+----------------+---------------------------------------+
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| Queue Name | Object name |
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+----------------+---------------------------------------+
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| Project name | Container name prefix |
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+----------------+---------------------------------------+
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| Created time | Object Creation Time |
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+----------------+---------------------------------------+
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| Queue metadata | Object content |
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+----------------+---------------------------------------+
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"""
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def __init__(self, *args, **kwargs):
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super(QueueController, self).__init__(*args, **kwargs)
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self._client = self.driver.connection
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def _list(self, project=None, marker=None,
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limit=storage.DEFAULT_QUEUES_PER_PAGE, detailed=False):
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container = utils._queue_container(project)
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try:
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_, objects = self._client.get_container(container,
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limit=limit,
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marker=marker)
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except swiftclient.ClientException as exc:
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if exc.http_status == 404:
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self._client.put_container(container)
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objects = []
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else:
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raise
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marker_next = {}
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yield utils.QueueListCursor(
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objects, detailed, marker_next,
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functools.partial(self._client.get_object, container))
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yield marker_next and marker_next['next']
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def _get(self, name, project=None):
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try:
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return self.get_metadata(name, project)
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except errors.QueueDoesNotExist:
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return {}
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def get_metadata(self, name, project=None):
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container = utils._queue_container(project)
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try:
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_, metadata = self._client.get_object(container, name)
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except swiftclient.ClientException as exc:
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if exc.http_status == 404:
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raise errors.QueueDoesNotExist(name, project)
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else:
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raise
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return jsonutils.loads(metadata) or {}
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def set_metadata(self, name, metadata, project=None):
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self._create(name, metadata, project)
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def _create(self, name, metadata=None, project=None):
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try:
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utils._put_or_create_container(
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self._client, utils._queue_container(project), name,
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content_type='application/json',
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contents=jsonutils.dumps(metadata),
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headers={'if-none-match': '*'})
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except swiftclient.ClientException as exc:
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if exc.http_status == 412:
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if metadata:
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# Enforce metadata setting regardless
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utils._put_or_create_container(
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self._client, utils._queue_container(project), name,
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content_type='application/json',
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contents=jsonutils.dumps(metadata))
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return False
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raise
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else:
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return True
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def _delete(self, name, project=None):
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try:
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self._client.delete_object(utils._queue_container(project), name)
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except swiftclient.ClientException as exc:
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if exc.http_status != 404:
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raise
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def _stats(self, name, project=None):
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pass
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def _exists(self, name, project=None):
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try:
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return self._client.head_object(utils._queue_container(project),
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name)
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except swiftclient.ClientException as exc:
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if exc.http_status != 404:
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raise
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return False
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else:
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return True
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@ -18,15 +18,6 @@ from zaqar import tests as testing
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from zaqar.tests.unit.storage import base
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@testing.requires_swift
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class SwiftQueuesTest(base.QueueControllerTest):
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driver_class = driver.DataDriver
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config_file = 'wsgi_swift.conf'
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controller_class = controllers.QueueController
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control_driver_class = mongodb.ControlDriver
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@testing.requires_swift
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class SwiftMessagesTest(base.MessageControllerTest):
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driver_class = driver.DataDriver
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