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api.py
826 lines (513 loc) · 26.7 KB
/
api.py
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# 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.
# 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.
"""Defines interface for DB access.
The underlying driver is loaded as a :class:`LazyPluggable`.
Functions in this module are imported into the cinder.db namespace. Call these
functions from cinder.db namespace, not the cinder.db.api namespace.
All functions in this module return objects that implement a dictionary-like
interface. Currently, many of these objects are sqlalchemy objects that
implement a dictionary interface. However, a future goal is to have all of
these objects be simple dictionaries.
**Related Flags**
:backend: string to lookup in the list of LazyPluggable backends.
`sqlalchemy` is the only supported backend right now.
:connection: string specifying the sqlalchemy connection to use, like:
`sqlite:///var/lib/cinder/cinder.sqlite`.
:enable_new_services: when adding a new service to the database, is it in the
pool of available hardware (Default: True)
"""
from oslo.config import cfg
from cinder import exception
from cinder.openstack.common.db import api as db_api
db_opts = [
# TODO(rpodolyaka): this option is deprecated but still passed to
# LazyPluggable class which doesn't support retrieving
# of options put into groups. Nova's version of this
# class supports this. Perhaps, we should put it to Oslo
# and then reuse here.
cfg.StrOpt('db_backend',
default='sqlalchemy',
help='The backend to use for db'),
cfg.BoolOpt('enable_new_services',
default=True,
help='Services to be added to the available pool on create'),
cfg.StrOpt('volume_name_template',
default='volume-%s',
help='Template string to be used to generate volume names'),
cfg.StrOpt('snapshot_name_template',
default='snapshot-%s',
help='Template string to be used to generate snapshot names'),
cfg.StrOpt('backup_name_template',
default='backup-%s',
help='Template string to be used to generate backup names'), ]
CONF = cfg.CONF
CONF.register_opts(db_opts)
_BACKEND_MAPPING = {'sqlalchemy': 'cinder.db.sqlalchemy.api'}
IMPL = db_api.DBAPI(backend_mapping=_BACKEND_MAPPING)
class NoMoreTargets(exception.CinderException):
"""No more available targets"""
pass
###################
def service_destroy(context, service_id):
"""Destroy the service or raise if it does not exist."""
return IMPL.service_destroy(context, service_id)
def service_get(context, service_id):
"""Get a service or raise if it does not exist."""
return IMPL.service_get(context, service_id)
def service_get_by_host_and_topic(context, host, topic):
"""Get a service by host it's on and topic it listens to."""
return IMPL.service_get_by_host_and_topic(context, host, topic)
def service_get_all(context, disabled=None):
"""Get all services."""
return IMPL.service_get_all(context, disabled)
def service_get_all_by_topic(context, topic):
"""Get all services for a given topic."""
return IMPL.service_get_all_by_topic(context, topic)
def service_get_all_by_host(context, host):
"""Get all services for a given host."""
return IMPL.service_get_all_by_host(context, host)
def service_get_all_volume_sorted(context):
"""Get all volume services sorted by volume count.
:returns: a list of (Service, volume_count) tuples.
"""
return IMPL.service_get_all_volume_sorted(context)
def service_get_by_args(context, host, binary):
"""Get the state of an service by node name and binary."""
return IMPL.service_get_by_args(context, host, binary)
def service_create(context, values):
"""Create a service from the values dictionary."""
return IMPL.service_create(context, values)
def service_update(context, service_id, values):
"""Set the given properties on an service and update it.
Raises NotFound if service does not exist.
"""
return IMPL.service_update(context, service_id, values)
###################
def iscsi_target_count_by_host(context, host):
"""Return count of export devices."""
return IMPL.iscsi_target_count_by_host(context, host)
def iscsi_target_create_safe(context, values):
"""Create an iscsi_target from the values dictionary.
The device is not returned. If the create violates the unique
constraints because the iscsi_target and host already exist,
no exception is raised.
"""
return IMPL.iscsi_target_create_safe(context, values)
###############
def volume_allocate_iscsi_target(context, volume_id, host):
"""Atomically allocate a free iscsi_target from the pool."""
return IMPL.volume_allocate_iscsi_target(context, volume_id, host)
def volume_attached(context, volume_id, instance_id, host_name, mountpoint):
"""Ensure that a volume is set as attached."""
return IMPL.volume_attached(context, volume_id, instance_id, host_name,
mountpoint)
def volume_create(context, values):
"""Create a volume from the values dictionary."""
return IMPL.volume_create(context, values)
def volume_data_get_for_host(context, host):
"""Get (volume_count, gigabytes) for project."""
return IMPL.volume_data_get_for_host(context,
host)
def volume_data_get_for_project(context, project_id):
"""Get (volume_count, gigabytes) for project."""
return IMPL.volume_data_get_for_project(context, project_id)
def finish_volume_migration(context, src_vol_id, dest_vol_id):
"""Perform database updates upon completion of volume migration."""
return IMPL.finish_volume_migration(context, src_vol_id, dest_vol_id)
def volume_destroy(context, volume_id):
"""Destroy the volume or raise if it does not exist."""
return IMPL.volume_destroy(context, volume_id)
def volume_detached(context, volume_id):
"""Ensure that a volume is set as detached."""
return IMPL.volume_detached(context, volume_id)
def volume_get(context, volume_id):
"""Get a volume or raise if it does not exist."""
return IMPL.volume_get(context, volume_id)
def volume_get_all(context, marker, limit, sort_key, sort_dir):
"""Get all volumes."""
return IMPL.volume_get_all(context, marker, limit, sort_key, sort_dir)
def volume_get_all_by_host(context, host):
"""Get all volumes belonging to a host."""
return IMPL.volume_get_all_by_host(context, host)
def volume_get_all_by_instance_uuid(context, instance_uuid):
"""Get all volumes belonging to a instance."""
return IMPL.volume_get_all_by_instance_uuid(context, instance_uuid)
def volume_get_all_by_project(context, project_id, marker, limit, sort_key,
sort_dir):
"""Get all volumes belonging to a project."""
return IMPL.volume_get_all_by_project(context, project_id, marker, limit,
sort_key, sort_dir)
def volume_get_iscsi_target_num(context, volume_id):
"""Get the target num (tid) allocated to the volume."""
return IMPL.volume_get_iscsi_target_num(context, volume_id)
def volume_update(context, volume_id, values):
"""Set the given properties on an volume and update it.
Raises NotFound if volume does not exist.
"""
return IMPL.volume_update(context, volume_id, values)
####################
def snapshot_create(context, values):
"""Create a snapshot from the values dictionary."""
return IMPL.snapshot_create(context, values)
def snapshot_destroy(context, snapshot_id):
"""Destroy the snapshot or raise if it does not exist."""
return IMPL.snapshot_destroy(context, snapshot_id)
def snapshot_get(context, snapshot_id):
"""Get a snapshot or raise if it does not exist."""
return IMPL.snapshot_get(context, snapshot_id)
def snapshot_get_all(context):
"""Get all snapshots."""
return IMPL.snapshot_get_all(context)
def snapshot_get_all_by_project(context, project_id):
"""Get all snapshots belonging to a project."""
return IMPL.snapshot_get_all_by_project(context, project_id)
def snapshot_get_all_for_volume(context, volume_id):
"""Get all snapshots for a volume."""
return IMPL.snapshot_get_all_for_volume(context, volume_id)
def snapshot_update(context, snapshot_id, values):
"""Set the given properties on an snapshot and update it.
Raises NotFound if snapshot does not exist.
"""
return IMPL.snapshot_update(context, snapshot_id, values)
def snapshot_data_get_for_project(context, project_id, volume_type_id=None):
"""Get count and gigabytes used for snapshots for specified project."""
return IMPL.snapshot_data_get_for_project(context,
project_id,
volume_type_id)
def snapshot_get_active_by_window(context, begin, end=None, project_id=None):
"""Get all the snapshots inside the window.
Specifying a project_id will filter for a certain project.
"""
return IMPL.snapshot_get_active_by_window(context, begin, end, project_id)
####################
def snapshot_metadata_get(context, snapshot_id):
"""Get all metadata for a snapshot."""
return IMPL.snapshot_metadata_get(context, snapshot_id)
def snapshot_metadata_delete(context, snapshot_id, key):
"""Delete the given metadata item."""
IMPL.snapshot_metadata_delete(context, snapshot_id, key)
def snapshot_metadata_update(context, snapshot_id, metadata, delete):
"""Update metadata if it exists, otherwise create it."""
IMPL.snapshot_metadata_update(context, snapshot_id, metadata, delete)
####################
def volume_metadata_get(context, volume_id):
"""Get all metadata for a volume."""
return IMPL.volume_metadata_get(context, volume_id)
def volume_metadata_delete(context, volume_id, key):
"""Delete the given metadata item."""
IMPL.volume_metadata_delete(context, volume_id, key)
def volume_metadata_update(context, volume_id, metadata, delete):
"""Update metadata if it exists, otherwise create it."""
IMPL.volume_metadata_update(context, volume_id, metadata, delete)
##################
def volume_admin_metadata_get(context, volume_id):
"""Get all administration metadata for a volume."""
return IMPL.volume_admin_metadata_get(context, volume_id)
def volume_admin_metadata_delete(context, volume_id, key):
"""Delete the given metadata item."""
IMPL.volume_admin_metadata_delete(context, volume_id, key)
def volume_admin_metadata_update(context, volume_id, metadata, delete):
"""Update metadata if it exists, otherwise create it."""
IMPL.volume_admin_metadata_update(context, volume_id, metadata, delete)
##################
def volume_type_create(context, values):
"""Create a new volume type."""
return IMPL.volume_type_create(context, values)
def volume_type_get_all(context, inactive=False):
"""Get all volume types."""
return IMPL.volume_type_get_all(context, inactive)
def volume_type_get(context, id, inactive=False):
"""Get volume type by id."""
return IMPL.volume_type_get(context, id, inactive)
def volume_type_get_by_name(context, name):
"""Get volume type by name."""
return IMPL.volume_type_get_by_name(context, name)
def volume_type_qos_associations_get(context, qos_specs_id, inactive=False):
"""Get volume types that are associated with specific qos specs."""
return IMPL.volume_type_qos_associations_get(context,
qos_specs_id,
inactive)
def volume_type_qos_associate(context, type_id, qos_specs_id):
"""Associate a volume type with specific qos specs."""
return IMPL.volume_type_qos_associate(context, type_id, qos_specs_id)
def volume_type_qos_disassociate(context, qos_specs_id, type_id):
"""Disassociate a volume type from specific qos specs."""
return IMPL.volume_type_qos_disassociate(context, qos_specs_id, type_id)
def volume_type_qos_disassociate_all(context, qos_specs_id):
"""Disassociate all volume types from specific qos specs."""
return IMPL.volume_type_qos_disassociate_all(context,
qos_specs_id)
def volume_type_qos_specs_get(context, type_id):
"""Get all qos specs for given volume type."""
return IMPL.volume_type_qos_specs_get(context, type_id)
def volume_type_destroy(context, id):
"""Delete a volume type."""
return IMPL.volume_type_destroy(context, id)
def volume_get_active_by_window(context, begin, end=None, project_id=None):
"""Get all the volumes inside the window.
Specifying a project_id will filter for a certain project.
"""
return IMPL.volume_get_active_by_window(context, begin, end, project_id)
####################
def volume_type_extra_specs_get(context, volume_type_id):
"""Get all extra specs for a volume type."""
return IMPL.volume_type_extra_specs_get(context, volume_type_id)
def volume_type_extra_specs_delete(context, volume_type_id, key):
"""Delete the given extra specs item."""
IMPL.volume_type_extra_specs_delete(context, volume_type_id, key)
def volume_type_extra_specs_update_or_create(context,
volume_type_id,
extra_specs):
"""Create or update volume type extra specs. This adds or modifies the
key/value pairs specified in the extra specs dict argument
"""
IMPL.volume_type_extra_specs_update_or_create(context,
volume_type_id,
extra_specs)
###################
def volume_type_encryption_get(context, volume_type_id, session=None):
return IMPL.volume_type_encryption_get(context, volume_type_id, session)
def volume_type_encryption_delete(context, volume_type_id):
return IMPL.volume_type_encryption_delete(context, volume_type_id)
# TODO(joel-coffman): split into two functions -- update and create
def volume_type_encryption_update_or_create(context, volume_type_id,
encryption_specs):
return IMPL.volume_type_encryption_update_or_create(context,
volume_type_id,
encryption_specs)
def volume_type_encryption_volume_get(context, volume_type_id, session=None):
return IMPL.volume_type_encryption_volume_get(context, volume_type_id,
session)
def volume_encryption_metadata_get(context, volume_id, session=None):
return IMPL.volume_encryption_metadata_get(context, volume_id, session)
###################
def qos_specs_create(context, values):
"""Create a qos_specs."""
return IMPL.qos_specs_create(context, values)
def qos_specs_get(context, qos_specs_id):
"""Get all specification for a given qos_specs."""
return IMPL.qos_specs_get(context, qos_specs_id)
def qos_specs_get_all(context, inactive=False, filters=None):
"""Get all qos_specs."""
return IMPL.qos_specs_get_all(context, inactive, filters)
def qos_specs_get_by_name(context, name):
"""Get all specification for a given qos_specs."""
return IMPL.qos_specs_get_by_name(context, name)
def qos_specs_associations_get(context, qos_specs_id):
"""Get all associated volume types for a given qos_specs."""
return IMPL.qos_specs_associations_get(context, qos_specs_id)
def qos_specs_associate(context, qos_specs_id, type_id):
"""Associate qos_specs from volume type."""
return IMPL.qos_specs_associate(context, qos_specs_id, type_id)
def qos_specs_disassociate(context, qos_specs_id, type_id):
"""Disassociate qos_specs from volume type."""
return IMPL.qos_specs_disassociate(context, qos_specs_id, type_id)
def qos_specs_disassociate_all(context, qos_specs_id):
"""Disassociate qos_specs from all entities."""
return IMPL.qos_specs_disassociate_all(context, qos_specs_id)
def qos_specs_delete(context, qos_specs_id):
"""Delete the qos_specs."""
IMPL.qos_specs_delete(context, qos_specs_id)
def qos_specs_item_delete(context, qos_specs_id, key):
"""Delete specified key in the qos_specs."""
IMPL.qos_specs_item_delete(context, qos_specs_id, key)
def qos_specs_update(context, qos_specs_id, specs):
"""Update qos specs.
This adds or modifies the key/value pairs specified in the
specs dict argument for a given qos_specs.
"""
IMPL.qos_specs_update(context, qos_specs_id, specs)
###################
def volume_glance_metadata_create(context, volume_id, key, value):
"""Update the Glance metadata for the specified volume."""
return IMPL.volume_glance_metadata_create(context,
volume_id,
key,
value)
def volume_glance_metadata_get_all(context):
"""Return the glance metadata for all volumes."""
return IMPL.volume_glance_metadata_get_all(context)
def volume_glance_metadata_get(context, volume_id):
"""Return the glance metadata for a volume."""
return IMPL.volume_glance_metadata_get(context, volume_id)
def volume_snapshot_glance_metadata_get(context, snapshot_id):
"""Return the Glance metadata for the specified snapshot."""
return IMPL.volume_snapshot_glance_metadata_get(context, snapshot_id)
def volume_glance_metadata_copy_to_snapshot(context, snapshot_id, volume_id):
"""
Update the Glance metadata for a snapshot by copying all of the key:value
pairs from the originating volume. This is so that a volume created from
the snapshot will retain the original metadata.
"""
return IMPL.volume_glance_metadata_copy_to_snapshot(context, snapshot_id,
volume_id)
def volume_glance_metadata_copy_to_volume(context, volume_id, snapshot_id):
"""
Update the Glance metadata from a volume (created from a snapshot) by
copying all of the key:value pairs from the originating snapshot. This is
so that the Glance metadata from the original volume is retained.
"""
return IMPL.volume_glance_metadata_copy_to_volume(context, volume_id,
snapshot_id)
def volume_glance_metadata_delete_by_volume(context, volume_id):
"""Delete the glance metadata for a volume."""
return IMPL.volume_glance_metadata_delete_by_volume(context, volume_id)
def volume_glance_metadata_delete_by_snapshot(context, snapshot_id):
"""Delete the glance metadata for a snapshot."""
return IMPL.volume_glance_metadata_delete_by_snapshot(context, snapshot_id)
def volume_glance_metadata_copy_from_volume_to_volume(context,
src_volume_id,
volume_id):
"""
Update the Glance metadata for a volume by copying all of the key:value
pairs from the originating volume. This is so that a volume created from
the volume (clone) will retain the original metadata.
"""
return IMPL.volume_glance_metadata_copy_from_volume_to_volume(
context,
src_volume_id,
volume_id)
###################
def quota_create(context, project_id, resource, limit):
"""Create a quota for the given project and resource."""
return IMPL.quota_create(context, project_id, resource, limit)
def quota_get(context, project_id, resource):
"""Retrieve a quota or raise if it does not exist."""
return IMPL.quota_get(context, project_id, resource)
def quota_get_all_by_project(context, project_id):
"""Retrieve all quotas associated with a given project."""
return IMPL.quota_get_all_by_project(context, project_id)
def quota_update(context, project_id, resource, limit):
"""Update a quota or raise if it does not exist."""
return IMPL.quota_update(context, project_id, resource, limit)
def quota_destroy(context, project_id, resource):
"""Destroy the quota or raise if it does not exist."""
return IMPL.quota_destroy(context, project_id, resource)
###################
def quota_class_create(context, class_name, resource, limit):
"""Create a quota class for the given name and resource."""
return IMPL.quota_class_create(context, class_name, resource, limit)
def quota_class_get(context, class_name, resource):
"""Retrieve a quota class or raise if it does not exist."""
return IMPL.quota_class_get(context, class_name, resource)
def quota_class_get_default(context):
"""Retrieve all default quotas."""
return IMPL.quota_class_get_default(context)
def quota_class_get_all_by_name(context, class_name):
"""Retrieve all quotas associated with a given quota class."""
return IMPL.quota_class_get_all_by_name(context, class_name)
def quota_class_update(context, class_name, resource, limit):
"""Update a quota class or raise if it does not exist."""
return IMPL.quota_class_update(context, class_name, resource, limit)
def quota_class_destroy(context, class_name, resource):
"""Destroy the quota class or raise if it does not exist."""
return IMPL.quota_class_destroy(context, class_name, resource)
def quota_class_destroy_all_by_name(context, class_name):
"""Destroy all quotas associated with a given quota class."""
return IMPL.quota_class_destroy_all_by_name(context, class_name)
###################
def quota_usage_create(context, project_id, resource, in_use, reserved,
until_refresh):
"""Create a quota usage for the given project and resource."""
return IMPL.quota_usage_create(context, project_id, resource,
in_use, reserved, until_refresh)
def quota_usage_get(context, project_id, resource):
"""Retrieve a quota usage or raise if it does not exist."""
return IMPL.quota_usage_get(context, project_id, resource)
def quota_usage_get_all_by_project(context, project_id):
"""Retrieve all usage associated with a given resource."""
return IMPL.quota_usage_get_all_by_project(context, project_id)
###################
def reservation_create(context, uuid, usage, project_id, resource, delta,
expire):
"""Create a reservation for the given project and resource."""
return IMPL.reservation_create(context, uuid, usage, project_id,
resource, delta, expire)
def reservation_get(context, uuid):
"""Retrieve a reservation or raise if it does not exist."""
return IMPL.reservation_get(context, uuid)
def reservation_get_all_by_project(context, project_id):
"""Retrieve all reservations associated with a given project."""
return IMPL.reservation_get_all_by_project(context, project_id)
def reservation_destroy(context, uuid):
"""Destroy the reservation or raise if it does not exist."""
return IMPL.reservation_destroy(context, uuid)
###################
def quota_reserve(context, resources, quotas, deltas, expire,
until_refresh, max_age, project_id=None):
"""Check quotas and create appropriate reservations."""
return IMPL.quota_reserve(context, resources, quotas, deltas, expire,
until_refresh, max_age, project_id=project_id)
def reservation_commit(context, reservations, project_id=None):
"""Commit quota reservations."""
return IMPL.reservation_commit(context, reservations,
project_id=project_id)
def reservation_rollback(context, reservations, project_id=None):
"""Roll back quota reservations."""
return IMPL.reservation_rollback(context, reservations,
project_id=project_id)
def quota_destroy_all_by_project(context, project_id):
"""Destroy all quotas associated with a given project."""
return IMPL.quota_destroy_all_by_project(context, project_id)
def reservation_expire(context):
"""Roll back any expired reservations."""
return IMPL.reservation_expire(context)
###################
def backup_get(context, backup_id):
"""Get a backup or raise if it does not exist."""
return IMPL.backup_get(context, backup_id)
def backup_get_all(context):
"""Get all backups."""
return IMPL.backup_get_all(context)
def backup_get_all_by_host(context, host):
"""Get all backups belonging to a host."""
return IMPL.backup_get_all_by_host(context, host)
def backup_create(context, values):
"""Create a backup from the values dictionary."""
return IMPL.backup_create(context, values)
def backup_get_all_by_project(context, project_id):
"""Get all backups belonging to a project."""
return IMPL.backup_get_all_by_project(context, project_id)
def backup_update(context, backup_id, values):
"""
Set the given properties on a backup and update it.
Raises NotFound if backup does not exist.
"""
return IMPL.backup_update(context, backup_id, values)
def backup_destroy(context, backup_id):
"""Destroy the backup or raise if it does not exist."""
return IMPL.backup_destroy(context, backup_id)
###################
def transfer_get(context, transfer_id):
"""Get a volume transfer record or raise if it does not exist."""
return IMPL.transfer_get(context, transfer_id)
def transfer_get_all(context):
"""Get all volume transfer records."""
return IMPL.transfer_get_all(context)
def transfer_get_all_by_project(context, project_id):
"""Get all volume transfer records for specified project."""
return IMPL.transfer_get_all_by_project(context, project_id)
def transfer_create(context, values):
"""Create an entry in the transfers table."""
return IMPL.transfer_create(context, values)
def transfer_destroy(context, transfer_id):
"""Destroy a record in the volume transfer table."""
return IMPL.transfer_destroy(context, transfer_id)
def transfer_accept(context, transfer_id, user_id, project_id):
"""Accept a volume transfer."""
return IMPL.transfer_accept(context, transfer_id, user_id, project_id)