def bump_revision(resource, resource_type):
session = db_api.get_writer_session()
revision_number = utils.get_revision_number(resource, resource_type)
with session.begin():
_ensure_revision_row_exist(session, resource, resource_type)
std_attr_id = _get_standard_attr_id(session, resource['id'],
resource_type)
row = session.merge(
models.OVNRevisionNumbers(standard_attr_id=std_attr_id,
resource_uuid=resource['id']))
if revision_number < row.revision_number:
LOG.debug(
'Skip bumping the revision number for %(res_uuid)s (type: '
'%(res_type)s) to %(rev_num)d. A higher version is already '
'registered in the database (%(new_rev)d)', {
'res_type': resource_type,
'res_uuid': resource['id'],
'rev_num': revision_number,
'new_rev': row.revision_number
})
return
row.revision_number = revision_number
session.merge(row)
LOG.info(
'Successfully bumped revision number for resource '
'%(res_uuid)s (type: %(res_type)s) to %(rev_num)d', {
'res_uuid': resource['id'],
'res_type': resource_type,
'rev_num': revision_number
})
def create_initial_revision(resource_uuid,
resource_type,
session,
revision_number=ovn_const.INITIAL_REV_NUM):
with session.begin(subtransactions=True):
std_attr_id = _get_standard_attr_id(session, resource_uuid,
resource_type)
row = models.OVNRevisionNumbers(resource_uuid=resource_uuid,
resource_type=resource_type,
standard_attr_id=std_attr_id,
revision_number=revision_number)
session.add(row)
def create_initial_revision(resource_uuid,
resource_type,
session,
revision_number=ovn_const.INITIAL_REV_NUM,
may_exist=False):
LOG.debug('create_initial_revision uuid=%s, type=%s, rev=%s',
resource_uuid, resource_type, revision_number)
db_func = session.merge if may_exist else session.add
with session.begin(subtransactions=True):
std_attr_id = _get_standard_attr_id(session, resource_uuid,
resource_type)
row = models.OVNRevisionNumbers(resource_uuid=resource_uuid,
resource_type=resource_type,
standard_attr_id=std_attr_id,
revision_number=revision_number)
db_func(row)