OpenStack Block Storage (Cinder)
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# Copyright (c) 2011 X.commerce, a business unit of eBay Inc.
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# Copyright 2011 Piston Cloud Computing, Inc.
# All Rights Reserved.
#
# 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.
"""
SQLAlchemy models for cinder data.
"""
from oslo_config import cfg
from oslo_db.sqlalchemy import models
from oslo_utils import timeutils
from sqlalchemy import and_, func, select
from sqlalchemy import bindparam
from sqlalchemy import Column, Integer, String, Text, schema, Index
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import ForeignKey, DateTime, Boolean, UniqueConstraint
from sqlalchemy.orm import backref, column_property, relationship, validates
CONF = cfg.CONF
BASE = declarative_base()
class CinderBase(models.TimestampMixin,
models.ModelBase):
"""Base class for Cinder Models."""
__table_args__ = {'mysql_engine': 'InnoDB'}
# TODO(rpodolyaka): reuse models.SoftDeleteMixin in the next stage
# of implementing of BP db-cleanup
deleted_at = Column(DateTime)
deleted = Column(Boolean, default=False)
metadata = None
@staticmethod
def delete_values():
return {'deleted': True,
'deleted_at': timeutils.utcnow()}
def delete(self, session):
"""Delete this object."""
updated_values = self.delete_values()
self.update(updated_values)
self.save(session=session)
return updated_values
class Service(BASE, CinderBase):
"""Represents a running service on a host."""
__tablename__ = 'services'
id = Column(Integer, primary_key=True)
uuid = Column(String(36), nullable=True, index=True)
cluster_name = Column(String(255), nullable=True)
host = Column(String(255)) # , ForeignKey('hosts.id'))
binary = Column(String(255))
# We want to overwrite default updated_at definition so we timestamp at
# creation as well, so we only need to check updated_at for the heartbeat
updated_at = Column(DateTime, default=timeutils.utcnow,
onupdate=timeutils.utcnow)
topic = Column(String(255))
report_count = Column(Integer, nullable=False, default=0)
disabled = Column(Boolean, default=False)
availability_zone = Column(String(255), default='cinder')
disabled_reason = Column(String(255))
# adding column modified_at to contain timestamp
# for manual enable/disable of cinder services
# updated_at column will now contain timestamps for
# periodic updates
modified_at = Column(DateTime)
# Version columns to support rolling upgrade. These report the max RPC API
# and objects versions that the manager of the service is able to support.
rpc_current_version = Column(String(36))
object_current_version = Column(String(36))
# replication_status can be: enabled, disabled, not-capable, error,
# failed-over or not-configured
replication_status = Column(String(36), default="not-capable")
active_backend_id = Column(String(255))
frozen = Column(Boolean, nullable=False, default=False)
cluster = relationship('Cluster',
backref='services',
foreign_keys=cluster_name,
primaryjoin='and_('
'Service.cluster_name == Cluster.name,'
'Service.deleted == False)')
class Cluster(BASE, CinderBase):
"""Represents a cluster of hosts."""
__tablename__ = 'clusters'
# To remove potential races on creation we have a constraint set on name
# and race_preventer fields, and we set value on creation to 0, so 2
# clusters with the same name will fail this constraint. On deletion we
# change this field to the same value as the id which will be unique and
# will not conflict with the creation of another cluster with the same
# name.
__table_args__ = (UniqueConstraint('name', 'binary', 'race_preventer'),
CinderBase.__table_args__)
id = Column(Integer, primary_key=True)
# NOTE(geguileo): Name is constructed in the same way that Server.host but
# using cluster configuration option instead of host.
name = Column(String(255), nullable=False)
binary = Column(String(255), nullable=False)
disabled = Column(Boolean, default=False)
disabled_reason = Column(String(255))
race_preventer = Column(Integer, nullable=False, default=0)
replication_status = Column(String(36), default="not-capable")
active_backend_id = Column(String(255))
frozen = Column(Boolean, nullable=False, default=False)
# Last heartbeat reported by any of the services of this cluster. This is
# not deferred since we always want to load this field.
last_heartbeat = column_property(
select([func.max(Service.updated_at)]).
where(and_(Service.cluster_name == name, ~Service.deleted)).
correlate_except(Service), deferred=False)
# Number of existing services for this cluster
num_hosts = column_property(
select([func.count(Service.id)]).
where(and_(Service.cluster_name == name, ~Service.deleted)).
correlate_except(Service),
group='services_summary', deferred=True)
# Number of services that are down for this cluster
num_down_hosts = column_property(
select([func.count(Service.id)]).
where(and_(Service.cluster_name == name,
~Service.deleted,
Service.updated_at < bindparam('expired'))).
correlate_except(Service),
group='services_summary', deferred=True)
@staticmethod
def delete_values():
return {'race_preventer': Cluster.id,
'deleted': True,
'deleted_at': timeutils.utcnow()}
class ConsistencyGroup(BASE, CinderBase):
"""Represents a consistencygroup."""
__tablename__ = 'consistencygroups'
id = Column(String(36), primary_key=True)
user_id = Column(String(255), nullable=False)
project_id = Column(String(255), nullable=False)
cluster_name = Column(String(255), nullable=True)
host = Column(String(255))
availability_zone = Column(String(255))
name = Column(String(255))
description = Column(String(255))
volume_type_id = Column(String(255))
status = Column(String(255))
cgsnapshot_id = Column(String(36))
source_cgid = Column(String(36))
class Group(BASE, CinderBase):
"""Represents a generic volume group."""
__tablename__ = 'groups'
id = Column(String(36), primary_key=True)
user_id = Column(String(255), nullable=False)
project_id = Column(String(255), nullable=False)
cluster_name = Column(String(255))
host = Column(String(255))
availability_zone = Column(String(255))
name = Column(String(255))
description = Column(String(255))
status = Column(String(255))
group_type_id = Column(String(36))
group_snapshot_id = Column(String(36))
source_group_id = Column(String(36))
replication_status = Column(String(255))
class CGSnapshot(BASE, CinderBase):
"""Represents a cgsnapshot."""
__tablename__ = 'cgsnapshots'
id = Column(String(36), primary_key=True)
consistencygroup_id = Column(String(36), index=True)
user_id = Column(String(255), nullable=False)
project_id = Column(String(255), nullable=False)
name = Column(String(255))
description = Column(String(255))
status = Column(String(255))
consistencygroup = relationship(
ConsistencyGroup,
backref="cgsnapshots",
foreign_keys=consistencygroup_id,
primaryjoin='CGSnapshot.consistencygroup_id == ConsistencyGroup.id')
class GroupSnapshot(BASE, CinderBase):
"""Represents a group snapshot."""
__tablename__ = 'group_snapshots'
id = Column(String(36), primary_key=True)
group_id = Column(String(36), nullable=False, index=True)
user_id = Column(String(255))
project_id = Column(String(255))
name = Column(String(255))
description = Column(String(255))
status = Column(String(255))
group_type_id = Column(String(36))
group = relationship(
Group,
backref="group_snapshots",
foreign_keys=group_id,
primaryjoin='GroupSnapshot.group_id == Group.id')
class Volume(BASE, CinderBase):
"""Represents a block storage device that can be attached to a vm."""
__tablename__ = 'volumes'
__table_args__ = (Index('volumes_service_uuid_idx',
'deleted', 'service_uuid'),
CinderBase.__table_args__)
id = Column(String(36), primary_key=True)
_name_id = Column(String(36)) # Don't access/modify this directly!
@property
def name_id(self):
return self.id if not self._name_id else self._name_id
@name_id.setter
def name_id(self, value):
self._name_id = value
@property
def name(self):
return CONF.volume_name_template % self.name_id
ec2_id = Column(Integer)
user_id = Column(String(255))
project_id = Column(String(255))
snapshot_id = Column(String(36))
cluster_name = Column(String(255), nullable=True)
host = Column(String(255)) # , ForeignKey('hosts.id'))
size = Column(Integer)
availability_zone = Column(String(255)) # TODO(vish): foreign key?
status = Column(String(255)) # TODO(vish): enum?
attach_status = Column(String(255)) # TODO(vish): enum
migration_status = Column(String(255))
scheduled_at = Column(DateTime)
launched_at = Column(DateTime)
terminated_at = Column(DateTime)
display_name = Column(String(255))
display_description = Column(String(255))
provider_location = Column(String(255))
provider_auth = Column(String(255))
provider_geometry = Column(String(255))
provider_id = Column(String(255))
volume_type_id = Column(String(36))
source_volid = Column(String(36))
encryption_key_id = Column(String(36))
consistencygroup_id = Column(String(36), index=True)
group_id = Column(String(36), index=True)
bootable = Column(Boolean, default=False)
multiattach = Column(Boolean, default=False)
replication_status = Column(String(255))
replication_extended_status = Column(String(255))
replication_driver_data = Column(String(255))
previous_status = Column(String(255))
consistencygroup = relationship(
ConsistencyGroup,
backref="volumes",
foreign_keys=consistencygroup_id,
primaryjoin='Volume.consistencygroup_id == ConsistencyGroup.id')
group = relationship(
Group,
backref="volumes",
foreign_keys=group_id,
primaryjoin='Volume.group_id == Group.id')
service_uuid = Column(String(36), index=True)
service = relationship(Service,
backref="volumes",
foreign_keys=service_uuid,
primaryjoin='Volume.service_uuid == Service.uuid')
shared_targets = Column(Boolean, default=True) # make an FK of service?
class VolumeMetadata(BASE, CinderBase):
"""Represents a metadata key/value pair for a volume."""
__tablename__ = 'volume_metadata'
id = Column(Integer, primary_key=True)
key = Column(String(255))
value = Column(String(255))
volume_id = Column(String(36), ForeignKey('volumes.id'), nullable=False,
index=True)
volume = relationship(Volume, backref="volume_metadata",
foreign_keys=volume_id,
primaryjoin='and_('
'VolumeMetadata.volume_id == Volume.id,'
'VolumeMetadata.deleted == False)')
class VolumeAdminMetadata(BASE, CinderBase):
"""Represents an administrator metadata key/value pair for a volume."""
__tablename__ = 'volume_admin_metadata'
id = Column(Integer, primary_key=True)
key = Column(String(255))
value = Column(String(255))
volume_id = Column(String(36), ForeignKey('volumes.id'), nullable=False,
index=True)
volume = relationship(Volume, backref="volume_admin_metadata",
foreign_keys=volume_id,
primaryjoin='and_('
'VolumeAdminMetadata.volume_id == Volume.id,'
'VolumeAdminMetadata.deleted == False)')
class VolumeAttachment(BASE, CinderBase):
"""Represents a volume attachment for a vm."""
__tablename__ = 'volume_attachment'
id = Column(String(36), primary_key=True)
volume_id = Column(String(36), ForeignKey('volumes.id'), nullable=False,
index=True)
volume = relationship(Volume, backref="volume_attachment",
foreign_keys=volume_id,
primaryjoin='and_('
'VolumeAttachment.volume_id == Volume.id,'
'VolumeAttachment.deleted == False)')
instance_uuid = Column(String(36))
attached_host = Column(String(255))
mountpoint = Column(String(255))
attach_time = Column(DateTime)
detach_time = Column(DateTime)
attach_status = Column(String(255))
attach_mode = Column(String(255))
connection_info = Column(Text)
# Stores a serialized json dict of host connector information from brick.
connector = Column(Text)
class VolumeType(BASE, CinderBase):
"""Represent possible volume_types of volumes offered."""
__tablename__ = "volume_types"
id = Column(String(36), primary_key=True)
name = Column(String(255))
description = Column(String(255))
# A reference to qos_specs entity
qos_specs_id = Column(String(36),
ForeignKey('quality_of_service_specs.id'),
index=True)
is_public = Column(Boolean, default=True)
volumes = relationship(Volume,
backref=backref('volume_type', uselist=False),
foreign_keys=id,
primaryjoin='and_('
'Volume.volume_type_id == VolumeType.id, '
'VolumeType.deleted == False)')
class GroupType(BASE, CinderBase):
"""Represent possible group_types of groups offered."""
__tablename__ = "group_types"
id = Column(String(36), primary_key=True)
name = Column(String(255))
description = Column(String(255))
is_public = Column(Boolean, default=True)
groups = relationship(Group,
backref=backref('group_type', uselist=False),
foreign_keys=id,
primaryjoin='and_('
'Group.group_type_id == GroupType.id, '
'GroupType.deleted == False)')
class GroupVolumeTypeMapping(BASE, CinderBase):
"""Represent mapping between groups and volume_types."""
__tablename__ = "group_volume_type_mapping"
id = Column(Integer, primary_key=True, nullable=False)
volume_type_id = Column(String(36),
ForeignKey('volume_types.id'),
nullable=False, index=True)
group_id = Column(String(36),
ForeignKey('groups.id'),
nullable=False, index=True)
group = relationship(
Group,
backref="volume_types",
foreign_keys=group_id,
primaryjoin='and_('
'GroupVolumeTypeMapping.group_id == Group.id,'
'GroupVolumeTypeMapping.deleted == False)'
)
class VolumeTypeProjects(BASE, CinderBase):
"""Represent projects associated volume_types."""
__tablename__ = "volume_type_projects"
__table_args__ = (schema.UniqueConstraint(
"volume_type_id", "project_id", "deleted",
name="uniq_volume_type_projects0volume_type_id0project_id0deleted"),
CinderBase.__table_args__)
id = Column(Integer, primary_key=True)
volume_type_id = Column(String, ForeignKey('volume_types.id'),
nullable=False)
project_id = Column(String(255))
deleted = Column(Integer, default=0)
volume_type = relationship(
VolumeType,
backref="projects",
foreign_keys=volume_type_id,
primaryjoin='and_('
'VolumeTypeProjects.volume_type_id == VolumeType.id,'
'VolumeTypeProjects.deleted == 0)')
class GroupTypeProjects(BASE, CinderBase):
"""Represent projects associated group_types."""
__tablename__ = "group_type_projects"
__table_args__ = (schema.UniqueConstraint(
"group_type_id", "project_id", "deleted",
name="uniq_group_type_projects0group_type_id0project_id0deleted"),
CinderBase.__table_args__)
id = Column(Integer, primary_key=True)
group_type_id = Column(String, ForeignKey('group_types.id'),
nullable=False)
project_id = Column(String(255))
group_type = relationship(
GroupType,
backref="projects",
foreign_keys=group_type_id,
primaryjoin='and_('
'GroupTypeProjects.group_type_id == GroupType.id,'
'GroupTypeProjects.deleted == False)')
class VolumeTypeExtraSpecs(BASE, CinderBase):
"""Represents additional specs as key/value pairs for a volume_type."""
__tablename__ = 'volume_type_extra_specs'
id = Column(Integer, primary_key=True)
key = Column(String(255))
value = Column(String(255))
volume_type_id = Column(String(36),
ForeignKey('volume_types.id'),
nullable=False, index=True)
volume_type = relationship(
VolumeType,
backref="extra_specs",
foreign_keys=volume_type_id,
primaryjoin='and_('
'VolumeTypeExtraSpecs.volume_type_id == VolumeType.id,'
'VolumeTypeExtraSpecs.deleted == False)'
)
class GroupTypeSpecs(BASE, CinderBase):
"""Represents additional specs as key/value pairs for a group_type."""
__tablename__ = 'group_type_specs'
id = Column(Integer, primary_key=True)
key = Column(String(255))
value = Column(String(255))
group_type_id = Column(String(36),
ForeignKey('group_types.id'),
nullable=False, index=True)
group_type = relationship(
GroupType,
backref="group_specs",
foreign_keys=group_type_id,
primaryjoin='and_('
'GroupTypeSpecs.group_type_id == GroupType.id,'
'GroupTypeSpecs.deleted == False)'
)
class DefaultVolumeTypes(BASE, CinderBase):
"""Represent projects associated volume_types."""
__tablename__ = "default_volume_types"
volume_type_id = Column(String, ForeignKey('volume_types.id'),
nullable=False, index=True)
project_id = Column(String(255), primary_key=True)
volume_type = relationship(
VolumeType,
foreign_keys=volume_type_id,
primaryjoin='DefaultVolumeTypes.volume_type_id == VolumeType.id')
class QualityOfServiceSpecs(BASE, CinderBase):
"""Represents QoS specs as key/value pairs.
QoS specs is standalone entity that can be associated/disassociated
with volume types (one to many relation). Adjacency list relationship
pattern is used in this model in order to represent following hierarchical
data with in flat table, e.g, following structure:
.. code-block:: none
qos-specs-1 'Rate-Limit'
|
+------> consumer = 'front-end'
+------> total_bytes_sec = 1048576
+------> total_iops_sec = 500
qos-specs-2 'QoS_Level1'
|
+------> consumer = 'back-end'
+------> max-iops = 1000
+------> min-iops = 200
is represented by:
id specs_id key value
------ -------- ------------- -----
UUID-1 NULL QoSSpec_Name Rate-Limit
UUID-2 UUID-1 consumer front-end
UUID-3 UUID-1 total_bytes_sec 1048576
UUID-4 UUID-1 total_iops_sec 500
UUID-5 NULL QoSSpec_Name QoS_Level1
UUID-6 UUID-5 consumer back-end
UUID-7 UUID-5 max-iops 1000
UUID-8 UUID-5 min-iops 200
"""
__tablename__ = 'quality_of_service_specs'
id = Column(String(36), primary_key=True)
specs_id = Column(String(36), ForeignKey(id), index=True)
key = Column(String(255))
value = Column(String(255))
specs = relationship(
"QualityOfServiceSpecs",
cascade="all, delete-orphan",
backref=backref("qos_spec", remote_side=id),
)
vol_types = relationship(
VolumeType,
backref=backref('qos_specs'),
foreign_keys=id,
primaryjoin='and_('
'or_(VolumeType.qos_specs_id == '
'QualityOfServiceSpecs.id,'
'VolumeType.qos_specs_id == '
'QualityOfServiceSpecs.specs_id),'
'QualityOfServiceSpecs.deleted == False)')
class VolumeGlanceMetadata(BASE, CinderBase):
"""Glance metadata for a bootable volume."""
__tablename__ = 'volume_glance_metadata'
id = Column(Integer, primary_key=True, nullable=False)
volume_id = Column(String(36), ForeignKey('volumes.id'), index=True)
snapshot_id = Column(String(36), ForeignKey('snapshots.id'), index=True)
key = Column(String(255))
value = Column(Text)
volume = relationship(Volume, backref="volume_glance_metadata",
foreign_keys=volume_id,
primaryjoin='and_('
'VolumeGlanceMetadata.volume_id == Volume.id,'
'VolumeGlanceMetadata.deleted == False)')
class Quota(BASE, CinderBase):
"""Represents a single quota override for a project.
If there is no row for a given project id and resource, then the
default for the quota class is used. If there is no row for a
given quota class and resource, then the default for the
deployment is used. If the row is present but the hard limit is
Null, then the resource is unlimited.
"""
__tablename__ = 'quotas'
id = Column(Integer, primary_key=True)
project_id = Column(String(255), index=True)
resource = Column(String(255))
hard_limit = Column(Integer, nullable=True)
# TODO: (X release): Remove allocated, belonged to nested quotas
allocated = Column(Integer, default=0)
class QuotaClass(BASE, CinderBase):
"""Represents a single quota override for a quota class.
If there is no row for a given quota class and resource, then the
default for the deployment is used. If the row is present but the
hard limit is Null, then the resource is unlimited.
"""
__tablename__ = 'quota_classes'
id = Column(Integer, primary_key=True)
class_name = Column(String(255), index=True)
resource = Column(String(255))
hard_limit = Column(Integer, nullable=True)
class QuotaUsage(BASE, CinderBase):
"""Represents the current usage for a given resource."""
__tablename__ = 'quota_usages'
id = Column(Integer, primary_key=True)
project_id = Column(String(255), index=True)
resource = Column(String(300), index=True)
in_use = Column(Integer)
reserved = Column(Integer)
@property
def total(self):
return self.in_use + self.reserved
until_refresh = Column(Integer, nullable=True)
class Reservation(BASE, CinderBase):
"""Represents a resource reservation for quotas."""
__tablename__ = 'reservations'
__table_args__ = (Index('reservations_deleted_expire_idx',
'deleted', 'expire'),
Index('reservations_deleted_uuid_idx',
'deleted', 'uuid'),
CinderBase.__table_args__)
id = Column(Integer, primary_key=True)
uuid = Column(String(36), nullable=False)
usage_id = Column(Integer, ForeignKey('quota_usages.id'), nullable=True,
index=True)
# TODO: (X release): Remove allocated_id, belonged to nested quotas
allocated_id = Column(Integer, ForeignKey('quotas.id'), nullable=True,
index=True)
project_id = Column(String(255), index=True)
resource = Column(String(255))
delta = Column(Integer)
expire = Column(DateTime, nullable=False)
usage = relationship(
"QuotaUsage",
foreign_keys=usage_id,
primaryjoin='and_(Reservation.usage_id == QuotaUsage.id,'
'QuotaUsage.deleted == False)')
# TODO: (X release): Remove allocated_id, belonged to nested quotas
quota = relationship(
"Quota",
foreign_keys=allocated_id,
primaryjoin='and_(Reservation.allocated_id == Quota.id)')
class Snapshot(BASE, CinderBase):
"""Represents a snapshot of volume."""
__tablename__ = 'snapshots'
id = Column(String(36), primary_key=True)
@property
def name(self):
return CONF.snapshot_name_template % self.id
@property
def volume_name(self):
return self.volume.name # pylint: disable=E1101
user_id = Column(String(255))
project_id = Column(String(255))
volume_id = Column(String(36), index=True)
cgsnapshot_id = Column(String(36), index=True)
group_snapshot_id = Column(String(36), index=True)
status = Column(String(255))
progress = Column(String(255))
volume_size = Column(Integer)
display_name = Column(String(255))
display_description = Column(String(255))
encryption_key_id = Column(String(36))
volume_type_id = Column(String(36))
provider_location = Column(String(255))
provider_id = Column(String(255))
provider_auth = Column(String(255))
volume = relationship(Volume, backref="snapshots",
foreign_keys=volume_id,
primaryjoin='Snapshot.volume_id == Volume.id')
cgsnapshot = relationship(
CGSnapshot,
backref="snapshots",
foreign_keys=cgsnapshot_id,
primaryjoin='Snapshot.cgsnapshot_id == CGSnapshot.id')
group_snapshot = relationship(
GroupSnapshot,
backref="snapshots",
foreign_keys=group_snapshot_id,
primaryjoin='Snapshot.group_snapshot_id == GroupSnapshot.id')
class SnapshotMetadata(BASE, CinderBase):
"""Represents a metadata key/value pair for a snapshot."""
__tablename__ = 'snapshot_metadata'
id = Column(Integer, primary_key=True)
key = Column(String(255))
value = Column(String(255))
snapshot_id = Column(String(36),
ForeignKey('snapshots.id'),
nullable=False, index=True)
snapshot = relationship(Snapshot, backref="snapshot_metadata",
foreign_keys=snapshot_id,
primaryjoin='and_('
'SnapshotMetadata.snapshot_id == Snapshot.id,'
'SnapshotMetadata.deleted == False)')
class Backup(BASE, CinderBase):
"""Represents a backup of a volume to Swift."""
__tablename__ = 'backups'
id = Column(String(36), primary_key=True)
@property
def name(self):
return CONF.backup_name_template % self.id
user_id = Column(String(255), nullable=False)
project_id = Column(String(255), nullable=False)
volume_id = Column(String(36), nullable=False)
host = Column(String(255))
availability_zone = Column(String(255))
display_name = Column(String(255))
display_description = Column(String(255))
container = Column(String(255))
parent_id = Column(String(36))
status = Column(String(255))
fail_reason = Column(String(255))
service_metadata = Column(String(255))
service = Column(String(255))
size = Column(Integer)
object_count = Column(Integer)
temp_volume_id = Column(String(36))
temp_snapshot_id = Column(String(36))
num_dependent_backups = Column(Integer)
snapshot_id = Column(String(36))
data_timestamp = Column(DateTime)
restore_volume_id = Column(String(36))
encryption_key_id = Column(String(36))
@validates('fail_reason')
def validate_fail_reason(self, key, fail_reason):
return fail_reason and fail_reason[:255] or ''
class BackupMetadata(BASE, CinderBase):
"""Represents a metadata key/value pair for a backup."""
__tablename__ = 'backup_metadata'
id = Column(Integer, primary_key=True)
key = Column(String(255))
value = Column(String(255))
backup_id = Column(String(36), ForeignKey('backups.id'), nullable=False,
index=True)
backup = relationship(Backup, backref="backup_metadata",
foreign_keys=backup_id,
primaryjoin='and_('
'BackupMetadata.backup_id == Backup.id,'
'BackupMetadata.deleted == False)')
class Encryption(BASE, CinderBase):
"""Represents encryption requirement for a volume type.
Encryption here is a set of performance characteristics describing
cipher, provider, and key_size for a certain volume type.
"""
__tablename__ = 'encryption'
encryption_id = Column(String(36), primary_key=True)
cipher = Column(String(255))
key_size = Column(Integer)
provider = Column(String(255))
control_location = Column(String(255))
volume_type_id = Column(String(36), ForeignKey('volume_types.id'))
volume_type = relationship(
VolumeType,
backref="encryption",
foreign_keys=volume_type_id,
primaryjoin='and_('
'Encryption.volume_type_id == VolumeType.id,'
'Encryption.deleted == False)'
)
class Transfer(BASE, CinderBase):
"""Represents a volume transfer request."""
__tablename__ = 'transfers'
id = Column(String(36), primary_key=True)
volume_id = Column(String(36), ForeignKey('volumes.id'), index=True)
display_name = Column(String(255))
salt = Column(String(255))
crypt_hash = Column(String(255))
expires_at = Column(DateTime)
no_snapshots = Column(Boolean, default=False)
source_project_id = Column(String(255), nullable=True)
destination_project_id = Column(String(255), nullable=True)
accepted = Column(Boolean, default=False)
volume = relationship(Volume, backref="transfer",
foreign_keys=volume_id,
primaryjoin='and_('
'Transfer.volume_id == Volume.id,'
'Transfer.deleted == False)')
class DriverInitiatorData(BASE, models.TimestampMixin, models.ModelBase):
"""Represents private key-value pair specific an initiator for drivers"""
__tablename__ = 'driver_initiator_data'
__table_args__ = (
schema.UniqueConstraint("initiator", "namespace", "key"),
CinderBase.__table_args__)
id = Column(Integer, primary_key=True, nullable=False)
initiator = Column(String(255), index=True, nullable=False)
namespace = Column(String(255), nullable=False)
key = Column(String(255), nullable=False)
value = Column(String(255))
class Message(BASE, CinderBase):
"""Represents a message"""
__tablename__ = 'messages'
id = Column(String(36), primary_key=True, nullable=False)
project_id = Column(String(255), nullable=False)
# Info/Error/Warning.
message_level = Column(String(255), nullable=False)
request_id = Column(String(255), nullable=True)
resource_type = Column(String(255))
# The UUID of the related resource.
resource_uuid = Column(String(36), nullable=True)
# Operation specific event ID.
event_id = Column(String(255), nullable=False)
# Message detail ID.
detail_id = Column(String(10), nullable=True)
# Operation specific action.
action_id = Column(String(10), nullable=True)
# After this time the message may no longer exist
expires_at = Column(DateTime, nullable=True, index=True)
class ImageVolumeCacheEntry(BASE, models.ModelBase):
"""Represents an image volume cache entry"""
__tablename__ = 'image_volume_cache_entries'
id = Column(Integer, primary_key=True, nullable=False)
host = Column(String(255), index=True, nullable=False)
cluster_name = Column(String(255), nullable=True)
image_id = Column(String(36), index=True, nullable=False)
image_updated_at = Column(DateTime, nullable=False)
volume_id = Column(String(36), nullable=False)
size = Column(Integer, nullable=False)
last_used = Column(DateTime, default=lambda: timeutils.utcnow())
class Worker(BASE, CinderBase):
"""Represents all resources that are being worked on by a node."""
__tablename__ = 'workers'
__table_args__ = (schema.UniqueConstraint('resource_type', 'resource_id'),
CinderBase.__table_args__)
# We want to overwrite default updated_at definition so we timestamp at
# creation as well
updated_at = Column(DateTime, default=timeutils.utcnow,
onupdate=timeutils.utcnow)
# Id added for convenience and speed on some operations
id = Column(Integer, primary_key=True, autoincrement=True)
# Type of the resource we are working on (Volume, Snapshot, Backup) it must
# match the Versioned Object class name.
resource_type = Column(String(40), primary_key=True, nullable=False)
# UUID of the resource we are working on
resource_id = Column(String(36), primary_key=True, nullable=False)
# Status that should be cleaned on service failure
status = Column(String(255), nullable=False)
# Service that is currently processing the operation
service_id = Column(Integer, nullable=True, index=True)
# To prevent claiming and updating races
race_preventer = Column(Integer, nullable=False, default=0)
# This is a flag we don't need to store in the DB as it is only used when
# we are doing the cleanup to let decorators know
cleaning = False
service = relationship(
'Service',
backref="workers",
foreign_keys=service_id,
primaryjoin='Worker.service_id == Service.id')
class AttachmentSpecs(BASE, CinderBase):
"""Represents attachment specs as k/v pairs for a volume_attachment.
DO NOT USE - NOTHING SHOULD WRITE NEW DATA TO THIS TABLE
The volume_attachment.connector column should be used instead.
"""
__tablename__ = 'attachment_specs'
id = Column(Integer, primary_key=True)
key = Column(String(255))
value = Column(String(255))
attachment_id = Column(String(36), ForeignKey('volume_attachment.id'),
nullable=False, index=True)
volume_attachment = relationship(
VolumeAttachment,
backref="attachment_specs",
foreign_keys=attachment_id,
primaryjoin='and_('
'AttachmentSpecs.attachment_id == VolumeAttachment.id,'
'AttachmentSpecs.deleted == False)'
)