def add_pending_changes(cls, instance, changes_type, node_id=None):
"""Add pending changes for current Cluster.
If node_id is specified then links created changes with node.
:param instance: Cluster instance
:param changes_type: name of changes to add
:param node_id: node id for changes
:returns: None
"""
logger.debug(u"New pending changes in environment {0}: {1}{2}".format(
instance.id, changes_type,
u" node_id={0}".format(node_id) if node_id else u""))
#TODO(enchantner): check if node belongs to cluster
ex_chs = db().query(models.ClusterChanges).filter_by(cluster=instance,
name=changes_type)
if not node_id:
ex_chs = ex_chs.first()
else:
ex_chs = ex_chs.filter_by(node_id=node_id).first()
# do nothing if changes with the same name already pending
if ex_chs:
return
ch = models.ClusterChanges(cluster_id=instance.id, name=changes_type)
if node_id:
ch.node_id = node_id
db().add(ch)
db().flush()
def update_changes(cls, instance, changes):
instance.changes_list = [
models.ClusterChanges(**change) for change in changes
]
db().flush()
