#
# 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 functools
import itertools
import random
from oslo_config import cfg
from oslo_db import api as oslo_db_api
from oslo_db import exception as db_exception
from oslo_db import options
from oslo_db.sqlalchemy import enginefacade
from oslo_db.sqlalchemy import utils
from oslo_log import log as logging
from oslo_utils import encodeutils
from oslo_utils import timeutils
import sqlalchemy
from sqlalchemy import and_
from sqlalchemy import func
from sqlalchemy import or_
from sqlalchemy import orm
from heat.common import crypt
from heat.common import exception
from heat.common.i18n import _
from heat.db import filters as db_filters
from heat.db import models
from heat.db import utils as db_utils
from heat.engine import environment as heat_environment
from heat.rpc import api as rpc_api
CONF = cfg.CONF
CONF.import_opt('hidden_stack_tags', 'heat.common.config')
CONF.import_opt('max_events_per_stack', 'heat.common.config')
CONF.import_group('profiler', 'heat.common.config')
CONF.import_opt('db_max_retries', 'oslo_db.options', group='database')
CONF.import_opt('db_retry_interval', 'oslo_db.options', group='database')
CONF.import_opt(
'db_inc_retry_interval', 'oslo_db.options', group='database')
CONF.import_opt(
'db_max_retry_interval', 'oslo_db.options', group='database')
options.set_defaults(CONF)
_facade = None
LOG = logging.getLogger(__name__)
# TODO(sbaker): fix tests so that sqlite_fk=True can be passed to configure
context_manager = enginefacade.transaction_context()
# utility methods
[docs]
def get_engine():
return context_manager.writer.get_engine()
[docs]
def retry_on_db_error(func):
@functools.wraps(func)
def try_func(context, *args, **kwargs):
wrapped = oslo_db_api.wrap_db_retry(
max_retries=CONF.database.db_max_retries,
retry_on_deadlock=True,
retry_on_disconnect=True,
retry_interval=CONF.database.db_retry_interval,
inc_retry_interval=CONF.database.db_inc_retry_interval,
max_retry_interval=CONF.database.db_max_retry_interval,
)(func)
return wrapped(context, *args, **kwargs)
return try_func
def _soft_delete(context, obj):
"""Mark this object as deleted."""
setattr(obj, 'deleted_at', timeutils.utcnow())
def _soft_delete_aware_query(context, *args, **kwargs):
"""Stack query helper that accounts for context's `show_deleted` field.
:param show_deleted: if True, overrides context's show_deleted field.
"""
query = context.session.query(*args)
show_deleted = kwargs.get('show_deleted') or context.show_deleted
if not show_deleted:
query = query.filter_by(deleted_at=None)
return query
# raw template
[docs]
@context_manager.reader
def raw_template_get(context, template_id):
return _raw_template_get(context, template_id)
def _raw_template_get(context, template_id):
result = context.session.get(models.RawTemplate, template_id)
if not result:
raise exception.NotFound(_('raw template with id %s not found') %
template_id)
return result
[docs]
@context_manager.writer
def raw_template_create(context, values):
raw_template_ref = models.RawTemplate()
raw_template_ref.update(values)
raw_template_ref.save(context.session)
return raw_template_ref
[docs]
@context_manager.writer
def raw_template_update(context, template_id, values):
raw_template_ref = _raw_template_get(context, template_id)
# get only the changed values
values = dict((k, v) for k, v in values.items()
if getattr(raw_template_ref, k) != v)
if values:
for k, v in values.items():
setattr(raw_template_ref, k, v)
return raw_template_ref
[docs]
@context_manager.writer
def raw_template_delete(context, template_id):
try:
raw_template = _raw_template_get(context, template_id)
except exception.NotFound:
# Ignore not found
return
raw_tmpl_files_id = raw_template.files_id
context.session.delete(raw_template)
if raw_tmpl_files_id is None:
return
# If no other raw_template is referencing the same raw_template_files,
# delete that too
if context.session.query(models.RawTemplate).filter_by(
files_id=raw_tmpl_files_id).first() is None:
try:
raw_tmpl_files = _raw_template_files_get(
context, raw_tmpl_files_id)
except exception.NotFound:
# Ignore not found
return
context.session.delete(raw_tmpl_files)
# raw template files
[docs]
@context_manager.writer
def raw_template_files_create(context, values):
raw_templ_files_ref = models.RawTemplateFiles()
raw_templ_files_ref.update(values)
raw_templ_files_ref.save(context.session)
return raw_templ_files_ref
[docs]
@context_manager.reader
def raw_template_files_get(context, files_id):
return _raw_template_files_get(context, files_id)
def _raw_template_files_get(context, files_id):
result = context.session.get(models.RawTemplateFiles, files_id)
if not result:
raise exception.NotFound(
_("raw_template_files with files_id %d not found") %
files_id)
return result
# resource
[docs]
@context_manager.writer
def resource_create(context, values):
return _resource_create(context, values)
def _resource_create(context, values):
resource_ref = models.Resource()
resource_ref.data = []
resource_ref.attr_data = None
resource_ref.rsrc_attr_data = None
resource_ref.update(values)
resource_ref.save(context.session)
return resource_ref
[docs]
@retry_on_db_error
@context_manager.writer
def resource_create_replacement(context,
existing_res_id,
new_res_values,
atomic_key, expected_engine_id=None):
try:
with context_manager.writer.independent.using(context):
new_res = _resource_create(context, new_res_values)
update_data = {'replaced_by': new_res.id}
rows_updated = _resource_update(
context, existing_res_id, update_data, atomic_key,
expected_engine_id=expected_engine_id,
)
if not bool(rows_updated):
data = {}
if 'name' in new_res_values:
data['resource_name'] = new_res_values['name']
raise exception.UpdateInProgress(**data)
except db_exception.DBReferenceError as exc:
# New template_id no longer exists
LOG.debug('Not creating replacement resource: %s', exc)
return None
else:
return new_res
[docs]
@context_manager.reader
def resource_get_all_by_stack(context, stack_id, filters=None):
query = context.session.query(
models.Resource
).filter_by(
stack_id=stack_id
).options(
orm.joinedload(models.Resource.attr_data),
orm.joinedload(models.Resource.data),
orm.joinedload(models.Resource.rsrc_prop_data),
)
query = db_filters.exact_filter(query, models.Resource, filters)
results = query.all()
return dict((res.name, res) for res in results)
[docs]
@context_manager.reader
def resource_get_all_active_by_stack(context, stack_id):
filters = {'stack_id': stack_id, 'action': 'DELETE', 'status': 'COMPLETE'}
subquery = context.session.query(models.Resource.id).filter_by(**filters)
results = context.session.query(models.Resource).filter_by(
stack_id=stack_id).filter(
models.Resource.id.notin_(subquery.scalar_subquery())
).options(
orm.joinedload(models.Resource.attr_data),
orm.joinedload(models.Resource.data),
orm.joinedload(models.Resource.rsrc_prop_data),
).all()
return dict((res.id, res) for res in results)
[docs]
@context_manager.reader
def resource_get_all_by_root_stack(context, stack_id, filters=None,
stack_id_only=False):
query = context.session.query(
models.Resource
).filter_by(
root_stack_id=stack_id
)
if stack_id_only:
query = query.options(
orm.load_only(models.Resource.id, models.Resource.stack_id)
)
else:
query = query.options(
orm.joinedload(models.Resource.attr_data),
orm.joinedload(models.Resource.data),
orm.joinedload(models.Resource.rsrc_prop_data),
)
query = db_filters.exact_filter(query, models.Resource, filters)
results = query.all()
return dict((res.id, res) for res in results)
[docs]
@context_manager.reader
def engine_get_all_locked_by_stack(context, stack_id):
query = context.session.query(
func.distinct(models.Resource.engine_id)
).filter(
models.Resource.stack_id == stack_id,
models.Resource.engine_id.isnot(None))
return set(i[0] for i in query.all())
[docs]
@context_manager.reader
def resource_get(context, resource_id, refresh=False, refresh_data=False):
return _resource_get(context, resource_id, refresh=refresh,
refresh_data=refresh_data)
def _resource_get(context, resource_id, refresh=False, refresh_data=False):
result = context.session.query(
models.Resource
).filter_by(
id=resource_id
).options(
orm.joinedload(models.Resource.attr_data),
orm.joinedload(models.Resource.data),
orm.joinedload(models.Resource.rsrc_prop_data),
).first()
if not result:
raise exception.NotFound(_("resource with id %s not found") %
resource_id)
if refresh:
context.session.refresh(result)
if refresh_data:
# ensure data is loaded (lazy or otherwise)
result.data
return result
[docs]
@context_manager.reader
def resource_get_by_name_and_stack(context, resource_name, stack_id):
result = context.session.query(
models.Resource
).filter_by(
name=resource_name
).filter_by(
stack_id=stack_id
).options(
orm.joinedload(models.Resource.attr_data),
orm.joinedload(models.Resource.data),
orm.joinedload(models.Resource.rsrc_prop_data),
).first()
return result
[docs]
@context_manager.reader
def resource_get_all_by_physical_resource_id(context, physical_resource_id):
return list(
_resource_get_all_by_physical_resource_id(
context, physical_resource_id,
)
)
def _resource_get_all_by_physical_resource_id(context, physical_resource_id):
results = context.session.query(
models.Resource,
).filter_by(
physical_resource_id=physical_resource_id,
).options(
orm.joinedload(models.Resource.attr_data),
orm.joinedload(models.Resource.data),
orm.joinedload(models.Resource.rsrc_prop_data),
).all()
for result in results:
if context is None or context.is_admin or context.tenant_id in (
result.stack.tenant, result.stack.stack_user_project_id,
):
yield result
[docs]
@context_manager.reader
def resource_get_by_physical_resource_id(context, physical_resource_id):
results = _resource_get_all_by_physical_resource_id(
context, physical_resource_id,
)
try:
return next(results)
except StopIteration:
return None
[docs]
@context_manager.reader
def resource_get_all(context):
results = context.session.query(
models.Resource,
).options(
orm.joinedload(models.Resource.attr_data),
orm.joinedload(models.Resource.data),
orm.joinedload(models.Resource.rsrc_prop_data),
).all()
if not results:
raise exception.NotFound(_('no resources were found'))
return results
[docs]
@retry_on_db_error
@context_manager.writer
def resource_purge_deleted(context, stack_id):
filters = {'stack_id': stack_id, 'action': 'DELETE', 'status': 'COMPLETE'}
query = context.session.query(models.Resource)
result = query.filter_by(**filters)
attr_ids = [r.attr_data_id for r in result if r.attr_data_id is not None]
result.delete()
if attr_ids:
context.session.query(models.ResourcePropertiesData).filter(
models.ResourcePropertiesData.id.in_(attr_ids)).delete(
synchronize_session=False)
def _add_atomic_key_to_values(values, atomic_key):
if atomic_key is None:
values['atomic_key'] = 1
else:
values['atomic_key'] = atomic_key + 1
[docs]
@retry_on_db_error
@context_manager.writer
def resource_update(context, resource_id, values, atomic_key,
expected_engine_id=None):
return _resource_update(
context, resource_id, values, atomic_key,
expected_engine_id=expected_engine_id,
)
def _resource_update(
context, resource_id, values, atomic_key, expected_engine_id=None,
):
_add_atomic_key_to_values(values, atomic_key)
rows_updated = context.session.query(models.Resource).filter_by(
id=resource_id, engine_id=expected_engine_id,
atomic_key=atomic_key).update(values)
return bool(rows_updated)
[docs]
@context_manager.writer
def resource_update_and_save(context, resource_id, values):
resource = context.session.get(models.Resource, resource_id)
resource.update(values)
resource.save(context.session)
return _resource_get(context, resource.id)
[docs]
@context_manager.writer
def resource_delete(context, resource_id):
resource = context.session.get(models.Resource, resource_id)
if resource:
context.session.delete(resource)
if resource.attr_data_id is not None:
attr_prop_data = context.session.get(
models.ResourcePropertiesData, resource.attr_data_id)
context.session.delete(attr_prop_data)
[docs]
@context_manager.writer
def resource_exchange_stacks(context, resource_id1, resource_id2):
res1 = context.session.get(models.Resource, resource_id1)
res2 = context.session.get(models.Resource, resource_id2)
res1.stack, res2.stack = res2.stack, res1.stack
[docs]
@context_manager.writer
def resource_attr_id_set(context, resource_id, atomic_key, attr_id):
values = {'attr_data_id': attr_id}
_add_atomic_key_to_values(values, atomic_key)
rows_updated = context.session.query(models.Resource).filter(and_(
models.Resource.id == resource_id,
models.Resource.atomic_key == atomic_key,
models.Resource.engine_id.is_(None),
or_(models.Resource.attr_data_id == attr_id,
models.Resource.attr_data_id.is_(None)))).update(
values)
if rows_updated > 0:
return True
else:
# Someone else set the attr_id first and/or we have a stale
# view of the resource based on atomic_key, so delete the
# resource_properties_data (attr) DB row.
LOG.debug('Not updating res_id %(rid)s with attr_id %(aid)s',
{'rid': resource_id, 'aid': attr_id})
context.session.query(
models.ResourcePropertiesData).filter(
models.ResourcePropertiesData.id == attr_id).delete()
return False
[docs]
@context_manager.writer
def resource_attr_data_delete(context, resource_id, attr_id):
resource = context.session.get(models.Resource, resource_id)
attr_prop_data = context.session.get(
models.ResourcePropertiesData, attr_id)
if resource:
resource.update({'attr_data_id': None})
if attr_prop_data:
context.session.delete(attr_prop_data)
# resource data
[docs]
@context_manager.reader
def resource_data_get_all(context, resource_id, data=None):
"""Looks up resource_data by resource.id.
If data is encrypted, this method will decrypt the results.
"""
if data is None:
data = (context.session.query(models.ResourceData)
.filter_by(resource_id=resource_id)).all()
if not data:
raise exception.NotFound(_('no resource data found'))
ret = {}
for res in data:
if res.redact:
try:
ret[res.key] = crypt.decrypt(res.decrypt_method, res.value)
continue
except exception.InvalidEncryptionKey:
LOG.exception('Failed to decrypt resource data %(rkey)s '
'for %(rid)s, ignoring.',
{'rkey': res.key, 'rid': resource_id})
ret[res.key] = res.value
return ret
[docs]
@context_manager.reader
def resource_data_get(context, resource_id, key):
"""Lookup value of resource's data by key.
Decrypts resource data if necessary.
"""
result = _resource_data_get_by_key(context, resource_id, key)
if result.redact:
return crypt.decrypt(result.decrypt_method, result.value)
return result.value
[docs]
@context_manager.reader
def resource_data_get_by_key(context, resource_id, key):
return _resource_data_get_by_key(context, resource_id, key)
def _resource_data_get_by_key(context, resource_id, key):
"""Looks up resource_data by resource_id and key.
Does not decrypt resource_data.
"""
result = (context.session.query(models.ResourceData)
.filter_by(resource_id=resource_id)
.filter_by(key=key).first())
if not result:
raise exception.NotFound(_('No resource data found'))
return result
[docs]
@context_manager.writer
def resource_data_set(context, resource_id, key, value, redact=False):
"""Save resource's key/value pair to database."""
if redact:
method, value = crypt.encrypt(value)
else:
method = ''
try:
current = _resource_data_get_by_key(context, resource_id, key)
except exception.NotFound:
current = models.ResourceData()
current.key = key
current.resource_id = resource_id
current.redact = redact
current.value = value
current.decrypt_method = method
current.save(session=context.session)
return current
[docs]
@context_manager.writer
def resource_data_delete(context, resource_id, key):
result = _resource_data_get_by_key(context, resource_id, key)
context.session.delete(result)
# resource properties data
[docs]
@context_manager.writer
def resource_prop_data_create_or_update(context, values, rpd_id=None):
return _resource_prop_data_create_or_update(context, values, rpd_id=rpd_id)
def _resource_prop_data_create_or_update(context, values, rpd_id=None):
obj_ref = None
if rpd_id is not None:
obj_ref = context.session.query(
models.ResourcePropertiesData).filter_by(id=rpd_id).first()
if obj_ref is None:
obj_ref = models.ResourcePropertiesData()
obj_ref.update(values)
obj_ref.save(context.session)
return obj_ref
[docs]
@context_manager.writer
def resource_prop_data_create(context, values):
return _resource_prop_data_create_or_update(context, values)
[docs]
@context_manager.reader
def resource_prop_data_get(context, resource_prop_data_id):
result = context.session.get(
models.ResourcePropertiesData, resource_prop_data_id)
if result is None:
raise exception.NotFound(
_('ResourcePropertiesData with id %s not found') %
resource_prop_data_id)
return result
# stack
[docs]
@context_manager.reader
def stack_get_by_name_and_owner_id(context, stack_name, owner_id):
query = _soft_delete_aware_query(
context, models.Stack
).options(
orm.joinedload(models.Stack.raw_template),
).filter(
sqlalchemy.or_(
models.Stack.tenant == context.tenant_id,
models.Stack.stack_user_project_id == context.tenant_id,
)
).filter_by(name=stack_name).filter_by(owner_id=owner_id)
return query.first()
[docs]
@context_manager.reader
def stack_get_by_name(context, stack_name):
return _stack_get_by_name(context, stack_name)
def _stack_get_by_name(context, stack_name):
query = _soft_delete_aware_query(
context, models.Stack
).options(
orm.joinedload(models.Stack.raw_template),
).filter(
sqlalchemy.or_(
models.Stack.tenant == context.tenant_id,
models.Stack.stack_user_project_id == context.tenant_id),
).filter_by(name=stack_name)
return query.order_by(models.Stack.created_at).first()
[docs]
@context_manager.reader
def stack_get(context, stack_id, show_deleted=False, eager_load=True):
return _stack_get(
context, stack_id, show_deleted=show_deleted, eager_load=eager_load
)
def _stack_get(context, stack_id, show_deleted=False, eager_load=True):
options = []
if eager_load:
options.append(orm.joinedload(models.Stack.raw_template))
result = context.session.get(models.Stack, stack_id, options=options)
deleted_ok = show_deleted or context.show_deleted
if result is None or result.deleted_at is not None and not deleted_ok:
return None
# One exception to normal project scoping is users created by the
# stacks in the stack_user_project_id (in the heat stack user domain)
if (result is not None
and context is not None and not context.is_admin
and context.tenant_id not in (result.tenant,
result.stack_user_project_id)):
return None
return result
[docs]
@context_manager.reader
def stack_get_status(context, stack_id):
query = context.session.query(models.Stack)
query = query.options(
orm.load_only(
models.Stack.action,
models.Stack.status,
models.Stack.status_reason,
models.Stack.updated_at,
)
)
result = query.filter_by(id=stack_id).first()
if result is None:
raise exception.NotFound(_('Stack with id %s not found') % stack_id)
return (result.action, result.status, result.status_reason,
result.updated_at)
[docs]
@context_manager.reader
def stack_get_all_by_owner_id(context, owner_id):
return _stack_get_all_by_owner_id(context, owner_id)
def _stack_get_all_by_owner_id(context, owner_id):
results = _soft_delete_aware_query(
context, models.Stack,
).filter_by(
owner_id=owner_id, backup=False,
).all()
return results
[docs]
@context_manager.reader
def stack_get_all_by_root_owner_id(context, owner_id):
return list(_stack_get_all_by_root_owner_id(context, owner_id))
def _stack_get_all_by_root_owner_id(context, owner_id):
for stack in _stack_get_all_by_owner_id(context, owner_id):
yield stack
for ch_st in _stack_get_all_by_root_owner_id(context, stack.id):
yield ch_st
def _get_sort_keys(sort_keys, mapping):
"""Returns an array containing only allowed keys
:param sort_keys: an array of strings
:param mapping: a mapping from keys to DB column names
:returns: filtered list of sort keys
"""
if isinstance(sort_keys, str):
sort_keys = [sort_keys]
return [mapping[key] for key in sort_keys or [] if key in mapping]
def _paginate_query(context, query, model, limit=None, sort_keys=None,
marker=None, sort_dir=None):
default_sort_keys = ['created_at']
if not sort_keys:
sort_keys = default_sort_keys
if not sort_dir:
sort_dir = 'desc'
# This assures the order of the stacks will always be the same
# even for sort_key values that are not unique in the database
sort_keys = sort_keys + ['id']
model_marker = None
if marker:
model_marker = context.session.get(model, marker)
try:
query = utils.paginate_query(query, model, limit, sort_keys,
model_marker, sort_dir)
except utils.InvalidSortKey as exc:
err_msg = encodeutils.exception_to_unicode(exc)
raise exception.Invalid(reason=err_msg)
return query
def _query_stack_get_all(context, show_deleted=False,
show_nested=False, show_hidden=False, tags=None,
tags_any=None, not_tags=None, not_tags_any=None):
if show_nested:
query = _soft_delete_aware_query(
context, models.Stack, show_deleted=show_deleted
).filter_by(backup=False)
else:
query = _soft_delete_aware_query(
context, models.Stack, show_deleted=show_deleted
).filter_by(owner_id=None)
if not context.is_admin:
query = query.filter_by(tenant=context.tenant_id)
query = query.options(orm.subqueryload(models.Stack.tags))
if tags:
for tag in tags:
tag_alias = orm.aliased(models.StackTag)
query = query.join(tag_alias, models.Stack.tags)
query = query.filter(tag_alias.tag == tag)
if tags_any:
query = query.filter(
models.Stack.tags.any(
models.StackTag.tag.in_(tags_any)))
if not_tags:
subquery = _soft_delete_aware_query(
context, models.Stack, show_deleted=show_deleted
)
for tag in not_tags:
tag_alias = orm.aliased(models.StackTag)
subquery = subquery.join(tag_alias, models.Stack.tags)
subquery = subquery.filter(tag_alias.tag == tag)
not_stack_ids = [s.id for s in subquery.all()]
query = query.filter(models.Stack.id.notin_(not_stack_ids))
if not_tags_any:
query = query.filter(
~models.Stack.tags.any(
models.StackTag.tag.in_(not_tags_any)))
if not show_hidden and cfg.CONF.hidden_stack_tags:
query = query.filter(
~models.Stack.tags.any(
models.StackTag.tag.in_(cfg.CONF.hidden_stack_tags)))
return query
[docs]
@context_manager.reader
def stack_get_all(context, limit=None, sort_keys=None, marker=None,
sort_dir=None, filters=None,
show_deleted=False, show_nested=False, show_hidden=False,
tags=None, tags_any=None, not_tags=None,
not_tags_any=None, eager_load=False):
query = _query_stack_get_all(context,
show_deleted=show_deleted,
show_nested=show_nested,
show_hidden=show_hidden, tags=tags,
tags_any=tags_any, not_tags=not_tags,
not_tags_any=not_tags_any)
if eager_load:
query = query.options(orm.joinedload(models.Stack.raw_template))
return _filter_and_page_query(context, query, limit, sort_keys,
marker, sort_dir, filters).all()
def _filter_and_page_query(context, query, limit=None, sort_keys=None,
marker=None, sort_dir=None, filters=None):
if filters is None:
filters = {}
sort_key_map = {rpc_api.STACK_NAME: models.Stack.name.key,
rpc_api.STACK_STATUS: models.Stack.status.key,
rpc_api.STACK_CREATION_TIME: models.Stack.created_at.key,
rpc_api.STACK_UPDATED_TIME: models.Stack.updated_at.key}
valid_sort_keys = _get_sort_keys(sort_keys, sort_key_map)
query = db_filters.exact_filter(query, models.Stack, filters)
return _paginate_query(context, query, models.Stack, limit,
valid_sort_keys, marker, sort_dir)
[docs]
@context_manager.reader
def stack_count_all(context, filters=None,
show_deleted=False, show_nested=False, show_hidden=False,
tags=None, tags_any=None, not_tags=None,
not_tags_any=None):
query = _query_stack_get_all(context,
show_deleted=show_deleted,
show_nested=show_nested,
show_hidden=show_hidden, tags=tags,
tags_any=tags_any, not_tags=not_tags,
not_tags_any=not_tags_any)
query = db_filters.exact_filter(query, models.Stack, filters)
return query.count()
[docs]
@context_manager.writer
def stack_create(context, values):
stack_ref = models.Stack()
stack_ref.update(values)
stack_name = stack_ref.name
stack_ref.save(context.session)
# Even though we just created a stack with this name, we may not find
# it again because some unit tests create stacks with deleted_at set. Also
# some backup stacks may not be found, for reasons that are unclear.
earliest = _stack_get_by_name(context, stack_name)
if earliest is not None and earliest.id != stack_ref.id:
context.session.query(models.Stack).filter_by(
id=stack_ref.id,
).delete()
raise exception.StackExists(stack_name=stack_name)
return stack_ref
[docs]
@retry_on_db_error
@context_manager.writer
def stack_update(context, stack_id, values, exp_trvsl=None):
query = (context.session.query(models.Stack)
.filter(and_(models.Stack.id == stack_id),
(models.Stack.deleted_at.is_(None))))
if not context.is_admin:
query = query.filter(sqlalchemy.or_(
models.Stack.tenant == context.tenant_id,
models.Stack.stack_user_project_id == context.tenant_id))
if exp_trvsl is not None:
query = query.filter(models.Stack.current_traversal == exp_trvsl)
rows_updated = query.update(values, synchronize_session=False)
if not rows_updated:
LOG.debug('Did not set stack state with values '
'%(vals)s, stack id: %(id)s with '
'expected traversal: %(trav)s',
{'id': stack_id, 'vals': str(values),
'trav': str(exp_trvsl)})
if not _stack_get(context, stack_id, eager_load=False):
raise exception.NotFound(
_('Attempt to update a stack with id: '
'%(id)s %(msg)s') % {
'id': stack_id,
'msg': 'that does not exist'})
return (rows_updated is not None and rows_updated > 0)
[docs]
@context_manager.writer
def stack_delete(context, stack_id):
s = _stack_get(context, stack_id, eager_load=False)
if not s:
raise exception.NotFound(_('Attempt to delete a stack with id: '
'%(id)s %(msg)s') % {
'id': stack_id,
'msg': 'that does not exist'})
attr_ids = []
# normally the resources are deleted already by this point
for r in s.resources:
if r.attr_data_id is not None:
attr_ids.append(r.attr_data_id)
context.session.delete(r)
if attr_ids:
context.session.query(
models.ResourcePropertiesData.id).filter(
models.ResourcePropertiesData.id.in_(attr_ids)).delete(
synchronize_session=False)
_soft_delete(context, s)
[docs]
@context_manager.writer
def reset_stack_status(context, stack_id):
return _reset_stack_status(context, stack_id)
# NOTE(stephenfin): This method uses separate transactions to delete nested
# stacks, thus it's the only private method that is allowed to open a
# transaction (via 'context.session.begin')
def _reset_stack_status(context, stack_id, stack=None):
if stack is None:
stack = context.session.get(models.Stack, stack_id)
if stack is None:
raise exception.NotFound(_('Stack with id %s not found') % stack_id)
query = context.session.query(models.Resource).filter_by(
status='IN_PROGRESS', stack_id=stack_id)
query.update({'status': 'FAILED',
'status_reason': 'Stack status manually reset',
'engine_id': None})
query = context.session.query(models.ResourceData)
query = query.join(models.Resource)
query = query.filter_by(stack_id=stack_id)
query = query.filter(
models.ResourceData.key.in_(heat_environment.HOOK_TYPES))
data_ids = [data.id for data in query]
if data_ids:
query = context.session.query(models.ResourceData)
query = query.filter(models.ResourceData.id.in_(data_ids))
query.delete(synchronize_session='fetch')
# commit what we've done already
context.session.commit()
query = context.session.query(models.Stack).filter_by(owner_id=stack_id)
for child in query:
_reset_stack_status(context, child.id, child)
if stack.status == 'IN_PROGRESS':
stack.status = 'FAILED'
stack.status_reason = 'Stack status manually reset'
context.session.query(
models.StackLock
).filter_by(stack_id=stack_id).delete()
def _stack_tags_delete(context, stack_id):
result = _stack_tags_get(context, stack_id)
if result:
for tag in result:
context.session.delete(tag)
def _stack_tags_get(context, stack_id):
result = (context.session.query(models.StackTag)
.filter_by(stack_id=stack_id)
.all())
return result or None
# stack lock
def _is_duplicate_error(exc):
return isinstance(exc, db_exception.DBDuplicateEntry)
[docs]
@oslo_db_api.wrap_db_retry(max_retries=3, retry_on_deadlock=True,
retry_on_disconnect=True,
retry_interval=0.5,
inc_retry_interval=True,
exception_checker=_is_duplicate_error)
def stack_lock_create(context, stack_id, engine_id):
with context_manager.writer.independent.using(context) as session:
lock = session.get(models.StackLock, stack_id)
if lock is not None:
return lock.engine_id
session.add(models.StackLock(stack_id=stack_id, engine_id=engine_id))
[docs]
def stack_lock_get_engine_id(context, stack_id):
with context_manager.reader.independent.using(context) as session:
lock = session.get(models.StackLock, stack_id)
if lock is not None:
return lock.engine_id
[docs]
@context_manager.writer
def persist_state_and_release_lock(context, stack_id, engine_id, values):
rows_updated = (context.session.query(models.Stack)
.filter(models.Stack.id == stack_id)
.update(values, synchronize_session=False))
rows_affected = None
if rows_updated is not None and rows_updated > 0:
rows_affected = context.session.query(
models.StackLock
).filter_by(stack_id=stack_id, engine_id=engine_id).delete()
if not rows_affected:
return True
[docs]
def stack_lock_steal(context, stack_id, old_engine_id, new_engine_id):
with context_manager.writer.independent.using(context) as session:
lock = session.get(models.StackLock, stack_id)
rows_affected = session.query(
models.StackLock
).filter_by(stack_id=stack_id, engine_id=old_engine_id
).update({"engine_id": new_engine_id})
if not rows_affected:
return lock.engine_id if lock is not None else True
[docs]
def stack_lock_release(context, stack_id, engine_id):
with context_manager.writer.independent.using(context) as session:
rows_affected = session.query(
models.StackLock
).filter_by(stack_id=stack_id, engine_id=engine_id).delete()
if not rows_affected:
return True
[docs]
@context_manager.reader
def stack_get_root_id(context, stack_id):
s = _stack_get(context, stack_id, eager_load=False)
if not s:
return None
while s.owner_id:
s = _stack_get(context, s.owner_id, eager_load=False)
return s.id
[docs]
@context_manager.reader
def stack_count_total_resources(context, stack_id):
# count all resources which belong to the root stack
return context.session.query(
func.count(models.Resource.id)
).filter_by(root_stack_id=stack_id).scalar()
# user credentials
[docs]
@context_manager.writer
def user_creds_create(context):
values = context.to_dict()
user_creds_ref = models.UserCreds()
if values.get('trust_id'):
method, trust_id = crypt.encrypt(values.get('trust_id'))
user_creds_ref.trust_id = trust_id
user_creds_ref.decrypt_method = method
user_creds_ref.trustor_user_id = values.get('trustor_user_id')
user_creds_ref.username = None
user_creds_ref.password = None
user_creds_ref.tenant = values.get('tenant')
user_creds_ref.tenant_id = values.get('tenant_id')
user_creds_ref.auth_url = values.get('auth_url')
user_creds_ref.region_name = values.get('region_name')
else:
user_creds_ref.update(values)
method, password = crypt.encrypt(values['password'])
if len(str(password)) > 255:
raise exception.Error(_("Length of OS_PASSWORD after encryption"
" exceeds Heat limit (255 chars)"))
user_creds_ref.password = password
user_creds_ref.decrypt_method = method
user_creds_ref.save(context.session)
result = dict(user_creds_ref)
if values.get('trust_id'):
result['trust_id'] = values.get('trust_id')
else:
result['password'] = values.get('password')
return result
[docs]
@context_manager.reader
def user_creds_get(context, user_creds_id):
db_result = context.session.get(models.UserCreds, user_creds_id)
if db_result is None:
return None
# Return a dict copy of DB results, do not decrypt details into db_result
# or it can be committed back to the DB in decrypted form
result = dict(db_result)
del result['decrypt_method']
result['password'] = crypt.decrypt(
db_result.decrypt_method, result['password'])
result['trust_id'] = crypt.decrypt(
db_result.decrypt_method, result['trust_id'])
return result
[docs]
@db_utils.retry_on_stale_data_error
@context_manager.writer
def user_creds_delete(context, user_creds_id):
creds = context.session.get(models.UserCreds, user_creds_id)
if not creds:
raise exception.NotFound(
_('Attempt to delete user creds with id '
'%(id)s that does not exist') % {'id': user_creds_id})
context.session.delete(creds)
# event
[docs]
@context_manager.reader
def event_get_all_by_tenant(context, limit=None, marker=None,
sort_keys=None, sort_dir=None, filters=None):
query = context.session.query(models.Event)
query = db_filters.exact_filter(query, models.Event, filters)
query = query.join(
models.Event.stack
).filter_by(tenant=context.tenant_id).filter_by(deleted_at=None)
filters = None
return _events_filter_and_page_query(context, query, limit, marker,
sort_keys, sort_dir, filters).all()
[docs]
@context_manager.reader
def event_get_all_by_stack(context, stack_id, limit=None, marker=None,
sort_keys=None, sort_dir=None, filters=None):
query = context.session.query(models.Event).filter_by(stack_id=stack_id)
if filters and 'uuid' in filters:
# retrieving a single event, so eager load its rsrc_prop_data detail
query = query.options(orm.joinedload(models.Event.rsrc_prop_data))
return _events_filter_and_page_query(context, query, limit, marker,
sort_keys, sort_dir, filters).all()
def _events_paginate_query(context, query, model, limit=None, sort_keys=None,
marker=None, sort_dir=None):
default_sort_keys = ['created_at']
if not sort_keys:
sort_keys = default_sort_keys
if not sort_dir:
sort_dir = 'desc'
# This assures the order of the stacks will always be the same
# even for sort_key values that are not unique in the database
sort_keys = sort_keys + ['id']
model_marker = None
if marker:
# not to use context.session.get(model, marker), because
# user can only see the ID(column 'uuid') and the ID as the marker
model_marker = context.session.query(
model).filter_by(uuid=marker).first()
try:
query = utils.paginate_query(query, model, limit, sort_keys,
model_marker, sort_dir)
except utils.InvalidSortKey as exc:
err_msg = encodeutils.exception_to_unicode(exc)
raise exception.Invalid(reason=err_msg)
return query
def _events_filter_and_page_query(context, query,
limit=None, marker=None,
sort_keys=None, sort_dir=None,
filters=None):
if filters is None:
filters = {}
sort_key_map = {rpc_api.EVENT_TIMESTAMP: models.Event.created_at.key,
rpc_api.EVENT_RES_TYPE: models.Event.resource_type.key}
valid_sort_keys = _get_sort_keys(sort_keys, sort_key_map)
query = db_filters.exact_filter(query, models.Event, filters)
return _events_paginate_query(context, query, models.Event, limit,
valid_sort_keys, marker, sort_dir)
[docs]
@context_manager.reader
def event_count_all_by_stack(context, stack_id):
return _event_count_all_by_stack(context, stack_id)
def _event_count_all_by_stack(context, stack_id):
query = context.session.query(func.count(models.Event.id))
return query.filter_by(stack_id=stack_id).scalar()
def _find_rpd_references(context, stack_id):
ev_ref_ids = set(
e.rsrc_prop_data_id for e
in context.session.query(models.Event).filter_by(
stack_id=stack_id,
).all()
)
rsrc_ref_ids = set(
r.rsrc_prop_data_id for r
in context.session.query(models.Resource).filter_by(
stack_id=stack_id,
).all()
)
return ev_ref_ids | rsrc_ref_ids
def _all_backup_stack_ids(context, stack_id):
"""Iterate over all the IDs of all stacks related as stack/backup pairs.
All backup stacks of a main stack, past and present (i.e. including those
that are soft deleted), are included. The main stack itself is also
included if the initial ID passed in is for a backup stack. The initial ID
passed in is never included in the output.
"""
stack = context.session.get(models.Stack, stack_id)
if stack is None:
LOG.error('Stack %s not found', stack_id)
return
is_backup = stack.name.endswith('*')
if is_backup:
main = context.session.get(models.Stack, stack.owner_id)
if main is None:
LOG.error('Main stack for backup "%s" %s not found',
stack.name, stack_id)
return
yield main.id
for backup_id in _all_backup_stack_ids(context, main.id):
if backup_id != stack_id:
yield backup_id
else:
q_backup = context.session.query(models.Stack).filter(sqlalchemy.or_(
models.Stack.tenant == context.tenant_id,
models.Stack.stack_user_project_id == context.tenant_id))
q_backup = q_backup.filter_by(name=stack.name + '*')
q_backup = q_backup.filter_by(owner_id=stack_id)
for backup in q_backup.all():
yield backup.id
def _delete_event_rows(context, stack_id, limit):
# MySQL does not support LIMIT in subqueries,
# sqlite does not support JOIN in DELETE.
# So we must manually supply the IN() values.
# pgsql SHOULD work with the pure DELETE/JOIN below but that must be
# confirmed via integration tests.
query = context.session.query(models.Event).filter_by(
stack_id=stack_id,
)
query = query.order_by(models.Event.id).limit(limit)
id_pairs = [(e.id, e.rsrc_prop_data_id) for e in query.all()]
if not id_pairs:
return 0
(ids, rsrc_prop_ids) = zip(*id_pairs)
max_id = ids[-1]
# delete the events
retval = context.session.query(models.Event).filter(
models.Event.id <= max_id).filter(
models.Event.stack_id == stack_id).delete()
# delete unreferenced resource_properties_data
def del_rpd(rpd_ids):
if not rpd_ids:
return
q_rpd = context.session.query(models.ResourcePropertiesData)
q_rpd = q_rpd.filter(models.ResourcePropertiesData.id.in_(rpd_ids))
q_rpd.delete(synchronize_session=False)
if rsrc_prop_ids:
clr_prop_ids = set(rsrc_prop_ids) - _find_rpd_references(context,
stack_id)
clr_prop_ids.discard(None)
try:
del_rpd(clr_prop_ids)
except db_exception.DBReferenceError:
LOG.debug('Checking backup/stack pairs for RPD references')
found = False
for partner_stack_id in _all_backup_stack_ids(context,
stack_id):
found = True
clr_prop_ids -= _find_rpd_references(context,
partner_stack_id)
if not found:
LOG.debug('No backup/stack pairs found for %s', stack_id)
raise
del_rpd(clr_prop_ids)
return retval
[docs]
@retry_on_db_error
@context_manager.writer
def event_create(context, values):
if 'stack_id' in values and cfg.CONF.max_events_per_stack:
# only count events and purge on average
# 200.0/cfg.CONF.event_purge_batch_size percent of the time.
check = (2.0 / cfg.CONF.event_purge_batch_size) > random.uniform(0, 1)
if (
check and _event_count_all_by_stack(
context, values['stack_id']
) >= cfg.CONF.max_events_per_stack
):
# prune
try:
_delete_event_rows(
context, values['stack_id'],
cfg.CONF.event_purge_batch_size,
)
except db_exception.DBError as exc:
LOG.error('Failed to purge events: %s', str(exc))
event_ref = models.Event()
event_ref.update(values)
event_ref.save(context.session)
result = context.session.query(models.Event).filter_by(
id=event_ref.id,
).options(
orm.joinedload(models.Event.rsrc_prop_data)
).first()
return result
# software config
[docs]
@context_manager.writer
def software_config_create(context, values):
obj_ref = models.SoftwareConfig()
obj_ref.update(values)
obj_ref.save(context.session)
return obj_ref
[docs]
@context_manager.reader
def software_config_get(context, config_id):
return _software_config_get(context, config_id)
def _software_config_get(context, config_id):
result = context.session.get(models.SoftwareConfig, config_id)
if (result is not None and context is not None and not context.is_admin and
result.tenant != context.tenant_id):
result = None
if not result:
raise exception.NotFound(_('Software config with id %s not found') %
config_id)
return result
[docs]
@context_manager.reader
def software_config_get_all(context, limit=None, marker=None):
query = context.session.query(models.SoftwareConfig)
if not context.is_admin:
query = query.filter_by(tenant=context.tenant_id)
return _paginate_query(context, query, models.SoftwareConfig,
limit=limit, marker=marker).all()
[docs]
@context_manager.reader
def software_config_count_all(context):
query = context.session.query(models.SoftwareConfig)
if not context.is_admin:
query = query.filter_by(tenant=context.tenant_id)
return query.count()
[docs]
@context_manager.writer
def software_config_delete(context, config_id):
config = _software_config_get(context, config_id)
# Query if the software config has been referenced by deployment.
result = context.session.query(models.SoftwareDeployment).filter_by(
config_id=config_id).first()
if result:
msg = (_("Software config with id %s can not be deleted as "
"it is referenced.") % config_id)
raise exception.InvalidRestrictedAction(message=msg)
context.session.delete(config)
# software deployment
[docs]
@context_manager.writer
def software_deployment_create(context, values):
obj_ref = models.SoftwareDeployment()
obj_ref.update(values)
try:
obj_ref.save(context.session)
except db_exception.DBReferenceError:
# NOTE(tkajinam): config_id is the only FK in SoftwareDeployment
err_msg = _('Config with id %s not found') % values['config_id']
raise exception.Invalid(reason=err_msg)
return _software_deployment_get(context, obj_ref.id)
[docs]
@context_manager.reader
def software_deployment_get(context, deployment_id):
return _software_deployment_get(context, deployment_id)
def _software_deployment_get(context, deployment_id):
# TODO(stephenfin): Why doesn't options work with session.get?
result = context.session.query(
models.SoftwareDeployment,
).filter_by(
id=deployment_id,
).options(
orm.joinedload(models.SoftwareDeployment.config),
).first()
if (result is not None and context is not None and not context.is_admin and
context.tenant_id not in (result.tenant,
result.stack_user_project_id)):
result = None
if not result:
raise exception.NotFound(_('Deployment with id %s not found') %
deployment_id)
return result
[docs]
@context_manager.reader
def software_deployment_get_all(context, server_id=None):
sd = models.SoftwareDeployment
query = context.session.query(sd).order_by(sd.created_at)
if not context.is_admin:
query = query.filter(
sqlalchemy.or_(
sd.tenant == context.tenant_id,
sd.stack_user_project_id == context.tenant_id,
)
)
if server_id:
query = query.filter_by(server_id=server_id)
query = query.join(
models.SoftwareDeployment.config,
).options(
orm.contains_eager(models.SoftwareDeployment.config)
)
return query.all()
[docs]
@context_manager.reader
def software_deployment_count_all(context):
sd = models.SoftwareDeployment
query = context.session.query(sd)
if not context.is_admin:
query = query.filter(
sqlalchemy.or_(
sd.tenant == context.tenant_id,
sd.stack_user_project_id == context.tenant_id,
)
)
return query.count()
[docs]
@context_manager.writer
def software_deployment_update(context, deployment_id, values):
deployment = _software_deployment_get(context, deployment_id)
try:
for k, v in values.items():
setattr(deployment, k, v)
except db_exception.DBReferenceError:
# NOTE(tkajinam): config_id is the only FK in SoftwareDeployment
err_msg = _('Config with id %s not found') % values['config_id']
raise exception.Invalid(reason=err_msg)
return deployment
[docs]
@context_manager.writer
def software_deployment_delete(context, deployment_id):
deployment = _software_deployment_get(context, deployment_id)
context.session.delete(deployment)
# snapshot
[docs]
@context_manager.writer
def snapshot_create(context, values):
obj_ref = models.Snapshot()
obj_ref.update(values)
obj_ref.save(context.session)
return obj_ref
[docs]
@context_manager.reader
def snapshot_get(context, snapshot_id):
return _snapshot_get(context, snapshot_id)
def _snapshot_get(context, snapshot_id):
result = context.session.get(models.Snapshot, snapshot_id)
if (result is not None and context is not None and
context.tenant_id != result.tenant):
result = None
if not result:
raise exception.NotFound(_('Snapshot with id %s not found') %
snapshot_id)
return result
[docs]
@context_manager.reader
def snapshot_get_by_stack(context, snapshot_id, stack):
snapshot = _snapshot_get(context, snapshot_id)
if snapshot.stack_id != stack.id:
raise exception.SnapshotNotFound(snapshot=snapshot_id,
stack=stack.name)
return snapshot
[docs]
@context_manager.writer
def snapshot_update(context, snapshot_id, values):
snapshot = _snapshot_get(context, snapshot_id)
snapshot.update(values)
snapshot.save(context.session)
return snapshot
[docs]
@context_manager.writer
def snapshot_delete(context, snapshot_id):
snapshot = _snapshot_get(context, snapshot_id)
context.session.delete(snapshot)
[docs]
@context_manager.reader
def snapshot_get_all_by_stack(context, stack_id):
return context.session.query(models.Snapshot).filter_by(
stack_id=stack_id, tenant=context.tenant_id)
[docs]
@context_manager.reader
def snapshot_count_all_by_stack(context, stack_id):
return context.session.query(models.Snapshot).filter_by(
stack_id=stack_id, tenant=context.tenant_id).count()
# service
[docs]
@context_manager.writer
def service_create(context, values):
service = models.Service()
service.update(values)
service.save(context.session)
return service
[docs]
@context_manager.writer
def service_update(context, service_id, values):
service = _service_get(context, service_id)
values.update({'updated_at': timeutils.utcnow()})
service.update(values)
service.save(context.session)
return service
[docs]
@context_manager.writer
def service_delete(context, service_id, soft_delete=True):
service = _service_get(context, service_id)
if soft_delete:
_soft_delete(context, service)
else:
context.session.delete(service)
[docs]
@context_manager.reader
def service_get(context, service_id):
return _service_get(context, service_id)
def _service_get(context, service_id):
result = context.session.get(models.Service, service_id)
if result is None:
raise exception.EntityNotFound(entity='Service', name=service_id)
return result
[docs]
@context_manager.reader
def service_get_all(context):
return context.session.query(models.Service).filter_by(
deleted_at=None,
).all()
[docs]
@context_manager.reader
def service_get_all_by_args(context, host, binary, hostname):
return (context.session.query(models.Service).
filter_by(host=host).
filter_by(binary=binary).
filter_by(hostname=hostname).all())
# purge
[docs]
def purge_deleted(age, granularity='days', project_id=None, batch_size=20):
def _validate_positive_integer(val, argname):
try:
val = int(val)
except ValueError:
raise exception.Error(_("%s should be an integer") % argname)
if val < 0:
raise exception.Error(_("%s should be a positive integer")
% argname)
return val
age = _validate_positive_integer(age, 'age')
batch_size = _validate_positive_integer(batch_size, 'batch_size')
if granularity not in ('days', 'hours', 'minutes', 'seconds'):
raise exception.Error(
_("granularity should be days, hours, minutes, or seconds"))
if granularity == 'days':
age = age * 86400
elif granularity == 'hours':
age = age * 3600
elif granularity == 'minutes':
age = age * 60
time_line = timeutils.utcnow() - datetime.timedelta(seconds=age)
engine = get_engine()
meta = sqlalchemy.MetaData()
with engine.connect() as conn, conn.begin():
stack = sqlalchemy.Table('stack', meta, autoload_with=conn)
service = sqlalchemy.Table('service', meta, autoload_with=conn)
# Purge deleted services
srvc_del = service.delete().where(service.c.deleted_at < time_line)
with engine.connect() as conn, conn.begin():
conn.execute(srvc_del)
# find the soft-deleted stacks that are past their expiry
sel = sqlalchemy.select(
stack.c.id,
stack.c.raw_template_id,
stack.c.prev_raw_template_id,
stack.c.user_creds_id,
stack.c.action,
stack.c.status,
stack.c.name)
if project_id:
stack_where = sel.where(and_(
stack.c.tenant == project_id,
stack.c.deleted_at < time_line))
else:
stack_where = sel.where(
stack.c.deleted_at < time_line)
with engine.connect() as conn, conn.begin():
stacks = conn.execute(stack_where)
while True:
next_stacks_to_purge = list(itertools.islice(stacks, batch_size))
if len(next_stacks_to_purge):
_purge_stacks(next_stacks_to_purge, engine, meta)
else:
break
@oslo_db_api.wrap_db_retry(max_retries=3, retry_on_deadlock=True,
retry_interval=0.5, inc_retry_interval=True)
def _purge_stacks(stack_infos, engine, meta):
"""Purge some stacks and their releated events, raw_templates, etc.
stack_infos is a list of lists of selected stack columns:
[[id, raw_template_id, prev_raw_template_id, user_creds_id,
action, status, name], ...]
"""
with engine.connect() as conn, conn.begin():
stack = sqlalchemy.Table('stack', meta, autoload_with=conn)
stack_lock = sqlalchemy.Table('stack_lock', meta, autoload_with=conn)
stack_tag = sqlalchemy.Table('stack_tag', meta, autoload_with=conn)
resource = sqlalchemy.Table('resource', meta, autoload_with=conn)
resource_data = sqlalchemy.Table(
'resource_data', meta, autoload_with=conn)
resource_properties_data = sqlalchemy.Table(
'resource_properties_data', meta, autoload_with=conn)
event = sqlalchemy.Table('event', meta, autoload_with=conn)
raw_template = sqlalchemy.Table(
'raw_template', meta, autoload_with=conn)
raw_template_files = sqlalchemy.Table(
'raw_template_files', meta, autoload_with=conn)
user_creds = sqlalchemy.Table('user_creds', meta, autoload_with=conn)
syncpoint = sqlalchemy.Table('sync_point', meta, autoload_with=conn)
stack_info_str = ','.join([str(i) for i in stack_infos])
LOG.info("Purging stacks %s", stack_info_str)
# TODO(cwolfe): find a way to make this re-entrant with
# reasonably sized transactions (good luck), or add
# a cleanup for orphaned rows.
stack_ids = [stack_info[0] for stack_info in stack_infos]
# delete stack locks (just in case some got stuck)
stack_lock_del = stack_lock.delete().where(
stack_lock.c.stack_id.in_(stack_ids))
with engine.connect() as conn, conn.begin():
conn.execute(stack_lock_del)
# delete stack tags
stack_tag_del = stack_tag.delete().where(
stack_tag.c.stack_id.in_(stack_ids))
with engine.connect() as conn, conn.begin():
conn.execute(stack_tag_del)
# delete resource_data
res_where = sqlalchemy.select(resource.c.id).where(
resource.c.stack_id.in_(stack_ids))
res_data_del = resource_data.delete().where(
resource_data.c.resource_id.in_(res_where))
with engine.connect() as conn, conn.begin():
conn.execute(res_data_del)
# clean up any sync_points that may have lingered
sync_del = syncpoint.delete().where(
syncpoint.c.stack_id.in_(stack_ids))
with engine.connect() as conn, conn.begin():
conn.execute(sync_del)
# get rsrc_prop_data_ids to delete
rsrc_prop_data_where = sqlalchemy.select(
resource.c.rsrc_prop_data_id,
).where(
resource.c.stack_id.in_(stack_ids))
with engine.connect() as conn, conn.begin():
rsrc_prop_data_ids = set(
[i[0] for i in list(conn.execute(rsrc_prop_data_where))]
)
rsrc_prop_data_where = sqlalchemy.select(
resource.c.attr_data_id,
).where(
resource.c.stack_id.in_(stack_ids))
with engine.connect() as conn, conn.begin():
rsrc_prop_data_ids.update(
[i[0] for i in list(conn.execute(rsrc_prop_data_where))]
)
rsrc_prop_data_where = sqlalchemy.select(
event.c.rsrc_prop_data_id,
).where(
event.c.stack_id.in_(stack_ids))
with engine.connect() as conn, conn.begin():
rsrc_prop_data_ids.update(
[i[0] for i in list(conn.execute(rsrc_prop_data_where))]
)
# delete events
event_del = event.delete().where(event.c.stack_id.in_(stack_ids))
with engine.connect() as conn, conn.begin():
conn.execute(event_del)
# delete resources (normally there shouldn't be any)
res_del = resource.delete().where(resource.c.stack_id.in_(stack_ids))
with engine.connect() as conn, conn.begin():
conn.execute(res_del)
# delete resource_properties_data
if rsrc_prop_data_ids: # keep rpd's in events
rsrc_prop_data_where = sqlalchemy.select(
event.c.rsrc_prop_data_id,
).where(
event.c.rsrc_prop_data_id.in_(rsrc_prop_data_ids))
with engine.connect() as conn, conn.begin():
ids = list(conn.execute(rsrc_prop_data_where))
rsrc_prop_data_ids.difference_update([i[0] for i in ids])
if rsrc_prop_data_ids: # keep rpd's in resources
rsrc_prop_data_where = sqlalchemy.select(
resource.c.rsrc_prop_data_id,
).where(
resource.c.rsrc_prop_data_id.in_(rsrc_prop_data_ids))
with engine.connect() as conn, conn.begin():
ids = list(conn.execute(rsrc_prop_data_where))
rsrc_prop_data_ids.difference_update([i[0] for i in ids])
if rsrc_prop_data_ids: # delete if we have any
rsrc_prop_data_del = resource_properties_data.delete().where(
resource_properties_data.c.id.in_(rsrc_prop_data_ids))
with engine.connect() as conn, conn.begin():
conn.execute(rsrc_prop_data_del)
# delete the stacks
stack_del = stack.delete().where(stack.c.id.in_(stack_ids))
with engine.connect() as conn, conn.begin():
conn.execute(stack_del)
# delete orphaned raw templates
raw_template_ids = [i[1] for i in stack_infos if i[1] is not None]
raw_template_ids.extend(i[2] for i in stack_infos if i[2] is not None)
if raw_template_ids: # keep those still referenced
raw_tmpl_sel = sqlalchemy.select(stack.c.raw_template_id).where(
stack.c.raw_template_id.in_(raw_template_ids))
with engine.connect() as conn, conn.begin():
raw_tmpl = [i[0] for i in conn.execute(raw_tmpl_sel)]
raw_template_ids = set(raw_template_ids) - set(raw_tmpl)
if raw_template_ids: # keep those still referenced (previous tmpl)
raw_tmpl_sel = sqlalchemy.select(
stack.c.prev_raw_template_id,
).where(
stack.c.prev_raw_template_id.in_(raw_template_ids))
with engine.connect() as conn, conn.begin():
raw_tmpl = [i[0] for i in conn.execute(raw_tmpl_sel)]
raw_template_ids = raw_template_ids - set(raw_tmpl)
if raw_template_ids: # delete raw_templates if we have any
raw_tmpl_file_sel = sqlalchemy.select(
raw_template.c.files_id,
).where(
raw_template.c.id.in_(raw_template_ids))
with engine.connect() as conn, conn.begin():
raw_tmpl_file_ids = [i[0] for i in conn.execute(
raw_tmpl_file_sel)]
raw_templ_del = raw_template.delete().where(
raw_template.c.id.in_(raw_template_ids))
with engine.connect() as conn, conn.begin():
conn.execute(raw_templ_del)
if raw_tmpl_file_ids: # keep _files still referenced
raw_tmpl_file_sel = sqlalchemy.select(
raw_template.c.files_id,
).where(
raw_template.c.files_id.in_(raw_tmpl_file_ids))
with engine.connect() as conn, conn.begin():
raw_tmpl_files = [i[0] for i in conn.execute(
raw_tmpl_file_sel)]
raw_tmpl_file_ids = set(raw_tmpl_file_ids) \
- set(raw_tmpl_files)
if raw_tmpl_file_ids: # delete _files if we have any
raw_tmpl_file_del = raw_template_files.delete().where(
raw_template_files.c.id.in_(raw_tmpl_file_ids))
with engine.connect() as conn, conn.begin():
conn.execute(raw_tmpl_file_del)
# purge any user creds that are no longer referenced
user_creds_ids = [i[3] for i in stack_infos if i[3] is not None]
if user_creds_ids: # keep those still referenced
user_sel = sqlalchemy.select(stack.c.user_creds_id).where(
stack.c.user_creds_id.in_(user_creds_ids))
with engine.connect() as conn, conn.begin():
users = [i[0] for i in conn.execute(user_sel)]
user_creds_ids = set(user_creds_ids) - set(users)
if user_creds_ids: # delete if we have any
usr_creds_del = user_creds.delete().where(
user_creds.c.id.in_(user_creds_ids))
with engine.connect() as conn, conn.begin():
conn.execute(usr_creds_del)
# sync point
[docs]
@context_manager.writer
def sync_point_delete_all_by_stack_and_traversal(context, stack_id,
traversal_id):
rows_deleted = context.session.query(models.SyncPoint).filter_by(
stack_id=stack_id, traversal_id=traversal_id).delete()
return rows_deleted
[docs]
@retry_on_db_error
@context_manager.writer
def sync_point_create(context, values):
values['entity_id'] = str(values['entity_id'])
sync_point_ref = models.SyncPoint()
sync_point_ref.update(values)
sync_point_ref.save(context.session)
return sync_point_ref
[docs]
@context_manager.reader
def sync_point_get(context, entity_id, traversal_id, is_update):
entity_id = str(entity_id)
return context.session.get(
models.SyncPoint, (entity_id, traversal_id, is_update),
)
