The watcher.decision_engine.model.model_root Module¶

Openstack implementation of the cluster graph.

class watcher.decision_engine.model.model_root.ModelRoot(stale=False)[source]¶

Bases: networkx.classes.digraph.DiGraph, watcher.decision_engine.model.base.Model

Cluster graph for an Openstack cluster.

add_instance(*args, **kwargs)[source]¶

add_node(*args, **kwargs)[source]¶

static assert_instance(obj)[source]¶

static assert_node(obj)[source]¶

delete_instance(instance, node=None)[source]¶

classmethod from_xml(data)[source]¶

get_all_compute_nodes(*args, **kwargs)[source]¶

get_all_instances(*args, **kwargs)[source]¶

get_instance_by_uuid(*args, **kwargs)[source]¶

get_node_by_instance_uuid(*args, **kwargs)[source]¶

get_node_by_uuid(*args, **kwargs)[source]¶

get_node_instances(*args, **kwargs)[source]¶

classmethod is_isomorphic(G1, G2)[source]¶

map_instance(*args, **kwargs)[source]¶

Map a newly created instance to a node

Parameters:	instance (str or Instance) – Instance object or instance UUID node (str or Instance) – ComputeNode object or node UUID

migrate_instance(*args, **kwargs)[source]¶

Migrate single instance from source_node to destination_node

Parameters:	instance – source_node – destination_node –
Returns:

remove_instance(*args, **kwargs)[source]¶

remove_node(*args, **kwargs)[source]¶

to_string()[source]¶

to_xml()[source]¶

unmap_instance(*args, **kwargs)[source]¶