distcloud/distributedcloud/dcorch/db/sqlalchemy/api.py

1092 lines
35 KiB
Python

# Copyright (c) 2015 Ericsson AB.
# Copyright (c) 2017-2021 Wind River Systems, 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.
#
"""
Implementation of SQLAlchemy backend.
"""
import datetime
import sys
import threading
from oslo_db import api as oslo_db_api
from oslo_db import exception as db_exc
from oslo_db.sqlalchemy import enginefacade
from oslo_log import log as logging
from oslo_utils import strutils
from oslo_utils import timeutils
from oslo_utils import uuidutils
from sqlalchemy import asc
from sqlalchemy import desc
from sqlalchemy.exc import IntegrityError
from sqlalchemy.orm.exc import MultipleResultsFound
from sqlalchemy.orm.exc import NoResultFound
from sqlalchemy.orm import joinedload_all
from dcorch.common import consts
from dcorch.common import exceptions as exception
from dcorch.common.i18n import _
from dcorch.db.sqlalchemy import migration
from dcorch.db.sqlalchemy import models
LOG = logging.getLogger(__name__)
_facade = None
_main_context_manager = None
_CONTEXT = threading.local()
def _get_main_context_manager():
global _main_context_manager
if not _main_context_manager:
_main_context_manager = enginefacade.transaction_context()
return _main_context_manager
def get_engine():
return _get_main_context_manager().get_legacy_facade().get_engine()
def get_session():
return _get_main_context_manager().get_legacy_facade().get_session()
def read_session():
return _get_main_context_manager().reader.using(_CONTEXT)
def write_session():
return _get_main_context_manager().writer.using(_CONTEXT)
_DEFAULT_QUOTA_NAME = 'default'
def get_backend():
"""The backend is this module itself."""
return sys.modules[__name__]
def model_query(context, *args, **kwargs):
session = kwargs.get('session')
if session:
return session.query(*args).options(joinedload_all('*'))
else:
with read_session() as session:
return session.query(*args).options(joinedload_all('*'))
def _session(context):
return get_session()
def is_admin_context(context):
"""Indicate if the request context is an administrator."""
if not context:
LOG.warning(_('Use of empty request context is deprecated'),
DeprecationWarning)
raise Exception('die')
return context.is_admin
def is_user_context(context):
"""Indicate if the request context is a normal user."""
if not context:
return False
if context.is_admin:
return False
if not context.user or not context.project:
return False
return True
def require_admin_context(f):
"""Decorator to require admin request context.
The first argument to the wrapped function must be the context.
"""
def wrapper(*args, **kwargs):
if not is_admin_context(args[0]):
raise exception.AdminRequired()
return f(*args, **kwargs)
return wrapper
def require_context(f):
"""Decorator to require *any* user or admin context.
This does no authorization for user or project access matching, see
:py:func:`authorize_project_context` and
:py:func:`authorize_user_context`.
The first argument to the wrapped function must be the context.
"""
def wrapper(*args, **kwargs):
if not is_admin_context(args[0]) and not is_user_context(args[0]):
raise exception.NotAuthorized()
return f(*args, **kwargs)
return wrapper
###################
@require_context
def _quota_get(context, project_id, resource, session=None):
result = model_query(context, models.Quota). \
filter_by(project_id=project_id). \
filter_by(resource=resource). \
first()
if not result:
raise exception.ProjectQuotaNotFound(project_id=project_id)
return result
@require_context
def quota_get(context, project_id, resource):
return _quota_get(context, project_id, resource)
@require_context
def quota_get_all_by_project(context, project_id):
rows = model_query(context, models.Quota). \
filter_by(project_id=project_id). \
all()
result = {'project_id': project_id}
for row in rows:
result[row.resource] = row.hard_limit
return result
@require_admin_context
def quota_create(context, project_id, resource, limit):
with write_session() as session:
quota_ref = models.Quota()
quota_ref.project_id = project_id
quota_ref.resource = resource
quota_ref.hard_limit = limit
session.add(quota_ref)
return quota_ref
@require_admin_context
def quota_update(context, project_id, resource, limit):
with write_session() as session:
quota_ref = _quota_get(context, project_id, resource, session=session)
if not quota_ref:
raise exception.ProjectQuotaNotFound(project_id=project_id)
quota_ref.hard_limit = limit
quota_ref.save(session)
return quota_ref
@require_admin_context
def quota_destroy(context, project_id, resource):
with write_session() as session:
quota_ref = _quota_get(context, project_id, resource, session=session)
if not quota_ref:
raise exception.ProjectQuotaNotFound(project_id=project_id)
session.delete(quota_ref)
@require_admin_context
def quota_destroy_all(context, project_id):
with write_session() as session:
quotas = model_query(context, models.Quota). \
filter_by(project_id=project_id). \
all()
if not quotas:
raise exception.ProjectQuotaNotFound(project_id=project_id)
for quota_ref in quotas:
session.delete(quota_ref)
##########################
@require_context
def _quota_class_get(context, class_name, resource):
result = model_query(context, models.QuotaClass). \
filter_by(deleted=0). \
filter_by(class_name=class_name). \
filter_by(resource=resource). \
first()
if not result:
raise exception.QuotaClassNotFound(class_name=class_name)
return result
@require_context
def quota_class_get(context, class_name, resource):
return _quota_class_get(context, class_name, resource)
@require_context
def quota_class_get_default(context):
return quota_class_get_all_by_name(context, _DEFAULT_QUOTA_NAME)
@require_context
def quota_class_get_all_by_name(context, class_name):
rows = model_query(context, models.QuotaClass). \
filter_by(deleted=0). \
filter_by(class_name=class_name). \
all()
result = {'class_name': class_name}
for row in rows:
result[row.resource] = row.hard_limit
return result
@require_admin_context
def quota_class_create(context, class_name, resource, limit):
with write_session() as session:
quota_class_ref = models.QuotaClass()
quota_class_ref.class_name = class_name
quota_class_ref.resource = resource
quota_class_ref.hard_limit = limit
session.add(quota_class_ref)
return quota_class_ref
@require_admin_context
def quota_class_update(context, class_name, resource, limit):
with write_session() as session:
quota_class_ref = session.query(models.QuotaClass). \
filter_by(deleted=0). \
filter_by(class_name=class_name). \
filter_by(resource=resource).first()
if not quota_class_ref:
raise exception.QuotaClassNotFound(class_name=class_name)
quota_class_ref.hard_limit = limit
quota_class_ref.save(session)
return quota_class_ref
@require_admin_context
def quota_class_destroy_all(context, class_name):
with write_session() as session:
quota_classes = session.query(models.QuotaClass). \
filter_by(deleted=0). \
filter_by(class_name=class_name). \
all()
if quota_classes:
for quota_class_ref in quota_classes:
session.delete(quota_class_ref)
else:
raise exception.QuotaClassNotFound()
def db_sync(engine, version=None):
"""Migrate the database to `version` or the most recent version."""
return migration.db_sync(engine, version=version)
def db_version(engine):
"""Display the current database version."""
return migration.db_version(engine)
def service_create(context, service_id, host=None, binary=None,
topic=None):
with write_session() as session:
time_now = timeutils.utcnow()
svc = models.Service(id=service_id,
host=host,
binary=binary,
topic=topic,
created_at=time_now,
updated_at=time_now)
session.add(svc)
return svc
def service_update(context, service_id, values=None):
with write_session() as session:
service = session.query(models.Service).get(service_id)
if not service:
return
if values is None:
values = {}
values.update({'updated_at': timeutils.utcnow()})
service.update(values)
service.save(session)
return service
def service_delete(context, service_id):
with write_session() as session:
session.query(models.Service).filter_by(
id=service_id).delete(synchronize_session='fetch')
def service_get(context, service_id):
return model_query(context, models.Service).get(service_id)
def service_get_all(context):
return model_query(context, models.Service).all()
##########################
# dbapi for orchestrator
def add_identity_filter(query, value,
use_region_name=None,
use_resource_type=None):
"""Adds an identity filter to a query.
Filters results by 'id', if supplied value is a valid integer.
then attempts to filter results by 'uuid';
otherwise filters by name
:param query: Initial query to add filter to.
:param value: Value for filtering results by.
:param use_region_name: Use region_name in filter
:param use_resource_type: Use resource_type in filter
:return: Modified query.
"""
if use_region_name:
return query.filter_by(region_name=value)
elif strutils.is_int_like(value):
return query.filter_by(id=value)
elif uuidutils.is_uuid_like(value):
return query.filter_by(uuid=value)
elif use_resource_type:
return query.filter_by(resource_type=value)
else:
return query.filter_by(name=value)
def add_filter_by_many_identities(query, model, values):
"""Adds an identity filter to a query for values list.
Filters results by ID, if supplied values contain a valid integer.
Otherwise attempts to filter results by UUID.
:param query: Initial query to add filter to.
:param model: Model for filter.
:param values: Values for filtering results by.
:return: tuple (Modified query, filter field name).
"""
if not values:
raise exception.Invalid()
value = values[0]
if strutils.is_int_like(value):
return query.filter(getattr(model, 'id').in_(values)), 'id'
elif uuidutils.is_uuid_like(value):
return query.filter(getattr(model, 'uuid').in_(values)), 'uuid'
else:
raise exception.InvalidParameterValue(
err="Invalid identity filter value %s" % value)
@require_context
def _subcloud_get(context, region_id, session=None):
query = model_query(context, models.Subcloud, session=session). \
filter_by(deleted=0)
query = add_identity_filter(query, region_id, use_region_name=True)
try:
return query.one()
except NoResultFound:
raise exception.SubcloudNotFound(region_name=region_id)
except MultipleResultsFound:
raise exception.InvalidParameterValue(
err="Multiple entries found for subcloud %s" % region_id)
@require_context
def subcloud_get(context, region_id):
return _subcloud_get(context, region_id)
@require_context
def subcloud_get_all(context, region_name=None,
management_state=None,
availability_status=None,
initial_sync_state=None):
query = model_query(context, models.Subcloud). \
filter_by(deleted=0)
if region_name:
query = add_identity_filter(query, region_name, use_region_name=True)
if management_state:
query = query.filter_by(management_state=management_state)
if availability_status:
query = query.filter_by(availability_status=availability_status)
if initial_sync_state:
query = query.filter_by(initial_sync_state=initial_sync_state)
return query.all()
@require_admin_context
def subcloud_create(context, region_name, values):
with write_session() as session:
result = models.Subcloud()
result.region_name = region_name
if not values.get('uuid'):
values['uuid'] = uuidutils.generate_uuid()
result.update(values)
try:
session.add(result)
except db_exc.DBDuplicateEntry:
raise exception.SubcloudAlreadyExists(region_name=region_name)
return result
@require_admin_context
def subcloud_update(context, region_name, values):
with write_session() as session:
result = _subcloud_get(context, region_name, session)
result.update(values)
result.save(session)
return result
@require_admin_context
def subcloud_delete(context, region_name):
with write_session() as session:
subclouds = session.query(models.Subcloud). \
filter_by(deleted=0). \
filter_by(region_name=region_name). \
all()
if subclouds:
for subcloud_ref in subclouds:
session.delete(subcloud_ref)
else:
raise exception.SubcloudNotFound(region_name=region_name)
@require_context
def _resource_get(context, resource_type, master_id, session):
query = model_query(context, models.Resource, session=session). \
filter_by(deleted=0)
query = query.filter_by(resource_type=resource_type)
query = query.filter_by(master_id=master_id)
try:
return query.one()
except NoResultFound:
raise exception.ResourceNotFound(resource_type=resource_type)
except MultipleResultsFound:
raise exception.InvalidParameterValue(
err=("Multiple entries found for resource %(id)s of type %(type)s",
{'id': master_id, 'type': resource_type}))
@require_context
def resource_get_by_type_and_master_id(context, resource_type, master_id):
with read_session() as session:
return _resource_get(context, resource_type, master_id, session)
@require_context
def resource_get_by_id(context, resource_id, session=None):
query = model_query(context, models.Resource, session=session). \
filter_by(deleted=0)
query = query.filter_by(id=resource_id)
try:
return query.one()
except NoResultFound:
raise exception.ResourceNotFound(id=resource_id)
@require_context
def resource_get_all(context, resource_type=None):
query = model_query(context, models.Resource). \
filter_by(deleted=0)
if resource_type:
query = add_identity_filter(query, resource_type,
use_resource_type=True)
return query.all()
@require_admin_context
def resource_create(context, resource_type, values):
with write_session() as session:
result = models.Resource()
result.resource_type = resource_type
if not values.get('uuid'):
values['uuid'] = uuidutils.generate_uuid()
result.update(values)
session.add(result)
return result
@require_admin_context
def resource_update(context, resource_id, values):
with write_session() as session:
result = resource_get_by_id(context, resource_id, session=session)
result.update(values)
result.save(session)
return result
@require_admin_context
def resource_delete(context, resource_type, master_id):
with write_session() as session:
resources = session.query(models.Resource). \
filter_by(deleted=0). \
filter_by(resource_type=resource_type). \
filter_by(master_id=master_id). \
all()
if resources:
for resource_ref in resources:
session.delete(resource_ref)
else:
raise exception.ResourceNotFound(resource_type=resource_type)
def add_subcloud_resource_filter_by_subcloud(query, value):
if strutils.is_int_like(value):
return query.filter(models.Subcloud.id == value)
elif uuidutils.is_uuid_like(value):
return query.filter(models.Subcloud.uuid == value)
@require_context
def _subcloud_resource_get(context, subcloud_resource_id, session=None):
query = model_query(context, models.SubcloudResource, session=session). \
filter_by(deleted=0)
query = add_identity_filter(query, subcloud_resource_id)
try:
return query.one()
except NoResultFound:
raise exception.SubcloudResourceNotFound(resource=subcloud_resource_id)
@require_context
def subcloud_resource_get(context, subcloud_resource_id):
return _subcloud_resource_get(context, subcloud_resource_id)
@require_context
def subcloud_resources_get_by_subcloud(context, subcloud_id):
query = model_query(context, models.SubcloudResource). \
filter_by(deleted=0)
if subcloud_id:
query = (query.join(models.Subcloud,
models.Subcloud.id ==
models.SubcloudResource.subcloud_id))
query, field = add_filter_by_many_identities(
query, models.Subcloud, [subcloud_id])
return query.all()
@require_context
def subcloud_resources_get_by_resource(context, resource_id):
# query by resource id or uuid, not resource master uuid.
query = model_query(context, models.SubcloudResource). \
filter_by(deleted=0)
if resource_id:
query = (query.join(models.Resource,
models.Resource.id ==
models.SubcloudResource.resource_id))
query, field = add_filter_by_many_identities(
query, models.Resource, [resource_id])
return query.all()
def subcloud_resources_get_all(context):
query = model_query(context, models.SubcloudResource). \
filter_by(deleted=0)
return query.all()
@require_context
def subcloud_resource_get_by_resource_and_subcloud(
context, resource_id, subcloud_id):
query = model_query(context, models.SubcloudResource). \
filter_by(deleted=0). \
filter_by(resource_id=resource_id). \
filter_by(subcloud_id=subcloud_id)
try:
return query.one()
except NoResultFound:
raise exception.SubcloudResourceNotFound()
except MultipleResultsFound:
raise exception.InvalidParameterValue(
err=("Multiple entries found for resource %(rid)d "
"subcloud %(sid)d",
{'rid': resource_id, 'sid': subcloud_id}))
@require_admin_context
def subcloud_resource_create(context, subcloud_id, resource_id, values):
with write_session() as session:
result = models.SubcloudResource()
result.subcloud_id = subcloud_id
result.resource_id = resource_id
if not values.get('uuid'):
values['uuid'] = uuidutils.generate_uuid()
result.update(values)
try:
session.add(result)
except db_exc.DBDuplicateEntry:
raise exception.SubcloudResourceAlreadyExists(
subcloud_id=subcloud_id,
resource_id=resource_id)
return result
@require_admin_context
def subcloud_resource_update(context, subcloud_resource_id, values):
with write_session() as session:
result = _subcloud_resource_get(context, subcloud_resource_id, session)
result.update(values)
result.save(session)
return result
@require_admin_context
def subcloud_resource_delete(context, subcloud_resource_id):
with write_session() as session:
query = session.query(models.SubcloudResource). \
filter_by(deleted=0)
query = add_identity_filter(query, subcloud_resource_id)
try:
subcloud_resource_ref = query.one()
except NoResultFound:
raise exception.SubcloudResourceNotFound(
resource=subcloud_resource_id)
session.delete(subcloud_resource_ref)
def add_orch_job_filter_by_resource(query, value):
if strutils.is_int_like(value):
return query.filter(models.OrchJob.id == value)
elif uuidutils.is_uuid_like(value):
return query.filter(models.OrchJob.uuid == value)
@require_context
def _orch_job_get(context, orch_job_id, session=None):
query = model_query(context, models.OrchJob, session=session). \
filter_by(deleted=0)
query = add_identity_filter(query, orch_job_id)
try:
return query.one()
except NoResultFound:
raise exception.OrchJobNotFound(orch_job=orch_job_id)
@require_context
def orch_job_get(context, orch_job_id):
return _orch_job_get(context, orch_job_id)
@require_context
def orch_job_get_all(context, resource_id=None):
query = model_query(context, models.OrchJob). \
filter_by(deleted=0)
if resource_id:
query = (query.join(models.Resource,
models.Resource.id == models.OrchJob.resource_id))
query, field = add_filter_by_many_identities(
query, models.Resource, [resource_id])
return query.all()
@require_admin_context
def orch_job_create(context, resource_id, endpoint_type,
operation_type, values):
with write_session() as session:
result = models.OrchJob()
result.resource_id = resource_id
result.endpoint_type = endpoint_type
result.operation_type = operation_type
if not values.get('uuid'):
values['uuid'] = uuidutils.generate_uuid()
result.update(values)
try:
session.add(result)
except db_exc.DBDuplicateEntry:
raise exception.OrchJobAlreadyExists(
resource_id=resource_id,
endpoint_type=endpoint_type,
operation_type=operation_type)
return result
@require_admin_context
def orch_job_update(context, orch_job_id, values):
with write_session() as session:
result = _orch_job_get(context, orch_job_id, session)
result.update(values)
result.save(session)
return result
@require_admin_context
def orch_job_delete(context, orch_job_id):
with write_session() as session:
query = session.query(models.OrchJob). \
filter_by(deleted=0)
query = add_identity_filter(query, orch_job_id)
try:
orch_job_ref = query.one()
except NoResultFound:
raise exception.OrchJobNotFound(orch_job=orch_job_id)
session.delete(orch_job_ref)
def add_orch_request_filter_by_resource(query, value):
if strutils.is_int_like(value):
return query.filter(models.OrchRequest.id == value)
elif uuidutils.is_uuid_like(value):
return query.filter(models.OrchRequest.uuid == value)
@require_context
def _orch_request_get(context, orch_request_id, session=None):
query = model_query(context, models.OrchRequest, session=session). \
filter_by(deleted=0)
query = add_identity_filter(query, orch_request_id)
try:
return query.one()
except NoResultFound:
raise exception.OrchRequestNotFound(orch_request=orch_request_id)
@require_context
def orch_request_get(context, orch_request_id):
return _orch_request_get(context, orch_request_id)
@require_context
def orch_request_get_most_recent_failed_request(context):
query = model_query(context, models.OrchRequest). \
filter_by(deleted=0). \
filter_by(state=consts.ORCH_REQUEST_STATE_FAILED)
try:
return query.order_by(desc(models.OrchRequest.updated_at)).first()
except NoResultFound:
return None
@require_context
def orch_request_get_all(context, orch_job_id=None):
query = model_query(context, models.OrchRequest). \
filter_by(deleted=0)
if orch_job_id:
query = (query.join(models.OrchJob,
models.OrchJob.id ==
models.OrchRequest.orch_job_id))
query, field = add_filter_by_many_identities(
query, models.OrchJob, [orch_job_id])
return query.all()
@require_context
def orch_request_get_by_attrs(context,
endpoint_type,
resource_type=None,
target_region_name=None,
states=None):
"""Query OrchRequests by attributes.
:param context: authorization context
:param endpoint_type: OrchJob.endpoint_type
:param resource_type: Resource.resource_type
:param target_region_name: OrchRequest target_region_name
:param states: [OrchRequest.state] note: must be a list
:return: [OrchRequests] sorted by OrchRequest.id
"""
query = model_query(context, models.OrchRequest). \
filter_by(deleted=0)
if target_region_name:
query = query.filter_by(target_region_name=target_region_name)
if states:
states = set(states)
query = query.filter(models.OrchRequest.state.in_(states))
query = query.join(models.OrchJob,
models.OrchJob.id == models.OrchRequest.orch_job_id). \
filter_by(endpoint_type=endpoint_type)
if resource_type is not None:
query = query.join(models.Resource,
models.Resource.id == models.OrchJob.resource_id). \
filter_by(resource_type=resource_type)
# sort by orch_request id
query = query.order_by(asc(models.OrchRequest.id)).all()
return query
@require_admin_context
def orch_request_create(context, orch_job_id, target_region_name, values):
with write_session() as session:
result = models.OrchRequest()
result.orch_job_id = orch_job_id
result.target_region_name = target_region_name
if not values.get('uuid'):
values['uuid'] = uuidutils.generate_uuid()
result.update(values)
try:
session.add(result)
except db_exc.DBDuplicateEntry:
raise exception.OrchRequestAlreadyExists(
orch_request=orch_job_id,
target_region_name=target_region_name)
return result
@require_admin_context
def orch_request_update(context, orch_request_id, values):
with write_session() as session:
result = _orch_request_get(context, orch_request_id, session)
result.update(values)
result.save(session)
return result
@require_admin_context
def orch_request_destroy(context, orch_request_id):
with write_session() as session:
query = session.query(models.OrchRequest). \
filter_by(deleted=0)
query = add_identity_filter(query, orch_request_id)
try:
orch_request_ref = query.one()
except NoResultFound:
raise exception.OrchRequestNotFound(orch_request=orch_request_id)
session.delete(orch_request_ref)
@require_admin_context
def orch_request_delete_by_subcloud(context, region_name):
"""Delete all orch_request entries for a given subcloud.
This is used primarily when deleting a subcloud.
In particular, it is not a bug if there are no entries to delete.
"""
with write_session() as session:
session.query(models.OrchRequest). \
filter_by(target_region_name=region_name). \
delete()
@require_admin_context
def orch_request_delete_previous_failed_requests(context, delete_timestamp):
"""Soft delete orch_request entries.
This is used to soft delete all previously failed requests at
the end of each audit cycle.
"""
LOG.info('Soft deleting failed orch requests at and before %s',
delete_timestamp)
with write_session() as session:
query = session.query(models.OrchRequest). \
filter_by(deleted=0). \
filter_by(state=consts.ORCH_REQUEST_STATE_FAILED). \
filter(models.OrchRequest.updated_at <= delete_timestamp)
count = query.update({'deleted': 1,
'deleted_at': timeutils.utcnow()})
LOG.info('%d previously failed sync requests soft deleted', count)
@require_admin_context
def purge_deleted_records(context, age_in_days):
deleted_age = \
timeutils.utcnow() - datetime.timedelta(days=age_in_days)
LOG.info('Purging deleted records older than %s', deleted_age)
with write_session() as session:
# Purging orch_request table
count = session.query(models.OrchRequest). \
filter_by(deleted=1). \
filter(models.OrchRequest.deleted_at < deleted_age).delete()
LOG.info('%d records were purged from orch_request table.', count)
# Purging orch_job table
subquery = model_query(context, models.OrchRequest.orch_job_id). \
group_by(models.OrchRequest.orch_job_id)
count = session.query(models.OrchJob). \
filter(~models.OrchJob.id.in_(subquery)). \
delete(synchronize_session='fetch')
LOG.info('%d records were purged from orch_job table.', count)
# Purging resource table
orchjob_subquery = model_query(context, models.OrchJob.resource_id). \
group_by(models.OrchJob.resource_id)
subcloud_resource_subquery = model_query(
context, models.SubcloudResource.resource_id). \
group_by(models.SubcloudResource.resource_id)
count = session.query(models.Resource). \
filter(~models.Resource.id.in_(orchjob_subquery)). \
filter(~models.Resource.id.in_(subcloud_resource_subquery)). \
delete(synchronize_session='fetch')
LOG.info('%d records were purged from resource table.', count)
def sync_lock_acquire(
context, engine_id, subcloud_name, endpoint_type, action):
LOG.debug("sync_lock_acquire: %s/%s/%s/%s" % (engine_id, subcloud_name,
endpoint_type, action))
with write_session() as session:
lock = session.query(models.SyncLock). \
filter_by(deleted=0). \
filter_by(subcloud_name=subcloud_name). \
filter_by(endpoint_type=endpoint_type). \
filter_by(action=action).all()
if not lock:
lock_ref = models.SyncLock()
lock_ref.engine_id = engine_id
lock_ref.subcloud_name = subcloud_name
lock_ref.endpoint_type = endpoint_type
lock_ref.action = action
try:
session.add(lock_ref)
return True
except IntegrityError:
LOG.info("IntegrityError Engine id:%s, subcloud:%s, "
"endpoint_type:%s" %
(engine_id, subcloud_name, endpoint_type))
except db_exc.DBDuplicateEntry:
LOG.info("DBDuplicateEntry Engine id:%s, subcloud:%s, "
"endpoint_type:%s" %
(engine_id, subcloud_name, endpoint_type))
except Exception:
LOG.exception("Got session add exception")
return False
# For robustness, this will attempt max_retries with inc_retry_interval
# backoff to release the sync_lock.
@oslo_db_api.wrap_db_retry(max_retries=3, retry_on_deadlock=True,
retry_interval=0.5, inc_retry_interval=True)
def sync_lock_release(context, subcloud_name, endpoint_type, action):
with write_session() as session:
session.query(models.SyncLock).filter_by(
subcloud_name=subcloud_name). \
filter_by(endpoint_type=endpoint_type). \
filter_by(action=action). \
delete(synchronize_session='fetch')
def sync_lock_steal(context, engine_id, subcloud_name, endpoint_type, action):
sync_lock_release(context, subcloud_name, endpoint_type, action)
return sync_lock_acquire(context, engine_id, subcloud_name, endpoint_type,
action)
def sync_lock_delete_by_engine_id(context, engine_id):
"""Delete all sync_lock entries for a given engine."""
with write_session() as session:
results = session.query(models.SyncLock). \
filter_by(engine_id=engine_id).all()
for result in results:
LOG.info("Deleted sync lock id=%s engine_id=%s" %
(result.id, result.engine_id))
session.delete(result)
def purge_stale_sync_lock(context):
"""Delete all sync lock entries where service ID no longer exists."""
LOG.info('Purging stale sync_locks')
with write_session() as session:
# Purging sync_lock table
subquery = model_query(context, models.Service.id). \
group_by(models.Service.id)
count = session.query(models.SyncLock). \
filter(~models.SyncLock.engine_id.in_(subquery)). \
delete(synchronize_session='fetch')
LOG.info('%d records were purged from sync_lock table.', count)
def _subcloud_sync_get(context, subcloud_name, endpoint_type, session=None):
query = model_query(context, models.SubcloudSync, session=session). \
filter_by(subcloud_name=subcloud_name). \
filter_by(endpoint_type=endpoint_type)
try:
return query.one()
except NoResultFound:
raise exception.SubcloudSyncNotFound(subcloud_name=subcloud_name,
endpoint_type=endpoint_type)
except MultipleResultsFound:
err = ("Multiple entries found for subcloud %s endpoint_type %s" %
(subcloud_name, endpoint_type))
raise exception.InvalidParameterValue(err=err)
def subcloud_sync_get(context, subcloud_name, endpoint_type):
return _subcloud_sync_get(context, subcloud_name, endpoint_type)
def subcloud_sync_create(context, subcloud_name, endpoint_type, values):
with write_session() as session:
result = models.SubcloudSync()
result.subcloud_name = subcloud_name
result.endpoint_type = endpoint_type
result.update(values)
try:
session.add(result)
except db_exc.DBDuplicateEntry:
raise exception.SubcloudSyncAlreadyExists(
subcloud_name=subcloud_name,
endpoint_type=endpoint_type)
return result
def subcloud_sync_update(context, subcloud_name, endpoint_type, values):
with write_session() as session:
result = _subcloud_sync_get(context, subcloud_name, endpoint_type,
session)
result.update(values)
result.save(session)
return result
def subcloud_sync_delete(context, subcloud_name, endpoint_type):
with write_session() as session:
results = session.query(models.SubcloudSync). \
filter_by(subcloud_name=subcloud_name). \
filter_by(endpoint_type=endpoint_type).all()
for result in results:
session.delete(result)