52b5dad078
This patchset adds a new resource that exposes shard registry through the administrative API. Since there is no storage backend available that implements this functionality yet, the shards resource is not connected to the queues routes just yet. Preliminary support is added for unit testing this soon. Change-Id: I49793990327643fc2bc5091615fb0bebcef04bc0 Partially-implements: blueprint storage-sharding
116 lines
3.5 KiB
Python
116 lines
3.5 KiB
Python
# Copyright (c) 2013 Red Hat, Inc.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
|
# implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
|
|
class ConnectionError(Exception):
|
|
"""Raised when the connection with the back-end
|
|
was lost.
|
|
"""
|
|
|
|
|
|
class DoesNotExist(Exception):
|
|
"""Resource does not exist."""
|
|
|
|
|
|
class NotPermitted(Exception):
|
|
"""Operation not permitted."""
|
|
|
|
|
|
class Conflict(Exception):
|
|
"""Resource could not be created due to a conflict
|
|
with an existing resource.
|
|
"""
|
|
|
|
|
|
class MessageConflict(Conflict):
|
|
|
|
def __init__(self, queue, project, message_ids):
|
|
"""Initializes the error with contextual information.
|
|
|
|
:param queue: name of the queue to which the message was posted
|
|
:param project: name of the project to which the queue belongs
|
|
:param message_ids: list of IDs for messages successfully
|
|
posted. Note that these must be in the same order as the
|
|
list of messages originally submitted to be enqueued.
|
|
"""
|
|
msg = (u'Message could not be enqueued due to a conflict '
|
|
u'with another message that is already in '
|
|
u'queue %(queue)s for project %(project)s' %
|
|
dict(queue=queue, project=project))
|
|
|
|
super(MessageConflict, self).__init__(msg)
|
|
|
|
self._succeeded_ids = message_ids
|
|
|
|
@property
|
|
def succeeded_ids(self):
|
|
return self._succeeded_ids
|
|
|
|
|
|
class QueueDoesNotExist(DoesNotExist):
|
|
|
|
def __init__(self, name, project):
|
|
msg = (u'Queue %(name)s does not exist for project %(project)s' %
|
|
dict(name=name, project=project))
|
|
super(QueueDoesNotExist, self).__init__(msg)
|
|
|
|
|
|
class QueueIsEmpty(Exception):
|
|
|
|
def __init__(self, name, project):
|
|
msg = (u'Queue %(name)s in project %(project)s is empty' %
|
|
dict(name=name, project=project))
|
|
super(QueueIsEmpty, self).__init__(msg)
|
|
|
|
|
|
class MessageDoesNotExist(DoesNotExist):
|
|
|
|
def __init__(self, mid, queue, project):
|
|
msg = (u'Message %(mid)s does not exist in '
|
|
u'queue %(queue)s for project %(project)s' %
|
|
dict(mid=mid, queue=queue, project=project))
|
|
super(MessageDoesNotExist, self).__init__(msg)
|
|
|
|
|
|
class MessageIsClaimed(NotPermitted):
|
|
|
|
def __init__(self, mid):
|
|
msg = (u'Message %(mid)s is claimed' % dict(mid=mid))
|
|
super(MessageIsClaimed, self).__init__(msg)
|
|
|
|
|
|
class ClaimDoesNotExist(DoesNotExist):
|
|
|
|
def __init__(self, cid, queue, project):
|
|
msg = (u'Claim %(cid)s does not exist in '
|
|
u'queue %(queue)s for project %(project)s' %
|
|
dict(cid=cid, queue=queue, project=project))
|
|
super(ClaimDoesNotExist, self).__init__(msg)
|
|
|
|
|
|
class MessageIsClaimedBy(NotPermitted):
|
|
|
|
def __init__(self, mid, cid):
|
|
msg = (u'Message %(mid)s is not claimed by %(cid)s' %
|
|
dict(cid=cid, mid=mid))
|
|
super(MessageIsClaimedBy, self).__init__(msg)
|
|
|
|
|
|
class ShardDoesNotExist(DoesNotExist):
|
|
|
|
def __init__(self, shard):
|
|
msg = u'Shard {0} does not exists'.format(shard)
|
|
super(ShardDoesNotExist, self).__init__(msg)
|