The zaqar.storage.errors module

exception ClaimConflict(queue, project)

Bases: zaqar.storage.errors.Conflict

msg_format = u'Messages could not be claimed due to a conflict with another parallel claim that is already in queue {queue} for project {project}'

exception ClaimDoesNotExist(cid, queue, project)

Bases: zaqar.storage.errors.DoesNotExist

msg_format = u'Claim {cid} does not exist in queue {queue} for project {project}'

exception Conflict(**kwargs)

Bases: zaqar.storage.errors.ExceptionBase

Resource could not be created due to a conflict.

exception ConnectionError(**kwargs)

Bases: zaqar.storage.errors.ExceptionBase

Raised when the connection with the back-end was lost.

exception DoesNotExist(**kwargs)

Bases: zaqar.storage.errors.ExceptionBase

Resource does not exist.

exception ExceptionBase(**kwargs)

Bases: exceptions.Exception

msg_format = ''

exception FlavorDoesNotExist(flavor)

Bases: zaqar.storage.errors.DoesNotExist

msg_format = u'Flavor {flavor} does not exist'

exception MessageConflict(queue, project)

Bases: zaqar.storage.errors.Conflict

msg_format = u'Message could not be enqueued due to a conflict with one or more other messages that are already in queue {queue} for project {project}'

exception MessageDoesNotExist(mid, queue, project)

Bases: zaqar.storage.errors.DoesNotExist

msg_format = u'Message {mid} does not exist in queue {queue} for project {project}'

exception MessageIsClaimed(mid)

Bases: zaqar.storage.errors.NotPermitted

msg_format = u'Message {mid} is claimed'

exception MessageNotClaimed(mid)

Bases: zaqar.storage.errors.NotPermitted

msg_format = u'Message {mid} is no longer claimed'

exception MessageNotClaimedBy(mid, cid)

Bases: zaqar.storage.errors.NotPermitted

msg_format = u'Message {mid} is not claimed by {cid}'

exception NoPoolFound

Bases: zaqar.storage.errors.ExceptionBase

msg_format = u'No pools registered'

exception NotPermitted(**kwargs)

Bases: zaqar.storage.errors.ExceptionBase

Operation not permitted.

exception PoolAlreadyExists(**kwargs)

Bases: zaqar.storage.errors.Conflict

msg_format = u'The database URI is in use by another pool.'

exception PoolCapabilitiesMismatch(**kwargs)

Bases: zaqar.storage.errors.ExceptionBase

msg_format = u'The pool being added does not support the minimum set of capabilities'

exception PoolDoesNotExist(pool)

Bases: zaqar.storage.errors.DoesNotExist

msg_format = u'Pool {pool} does not exist'

exception PoolGroupDoesNotExist(pool_group)

Bases: zaqar.storage.errors.DoesNotExist

msg_format = u'Pool group {pool_group} does not exist'

exception PoolInUseByFlavor(pid, fid)

Bases: zaqar.storage.errors.NotPermitted

flavor

msg_format = u'Pool {pid} is in use by flavor {fid}'

exception QueueDoesNotExist(name, project)

Bases: zaqar.storage.errors.DoesNotExist

msg_format = u'Queue {name} does not exist for project {project}'

exception QueueIsEmpty(name, project)

Bases: zaqar.storage.errors.ExceptionBase

msg_format = u'Queue {name} in project {project} is empty'

exception QueueNotMapped(queue, project)

Bases: zaqar.storage.errors.DoesNotExist

msg_format = u'No pool found for queue {queue} for project {project}'

exception SubscriptionAlreadyExists(**kwargs)

Bases: zaqar.storage.errors.Conflict

msg_format = u'Such subscription already exists. Subscriptions are unique by project + queue + subscriber URI.'

exception SubscriptionDoesNotExist(subscription_id)

Bases: zaqar.storage.errors.DoesNotExist

msg_format = u'Subscription {subscription_id} does not exist'