The watcher.decision_engine.model.model_root Module

Openstack implementation of the cluster graph.

class watcher.decision_engine.model.model_root.ModelRoot(stale=False)

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

Cluster graph for an Openstack cluster.

add_instance(*args, **kwargs)

add_node(*args, **kwargs)

static assert_instance(obj)

static assert_node(obj)

delete_instance(instance, node=None)

classmethod from_xml(data)

get_all_compute_nodes(*args, **kwargs)

get_all_instances(*args, **kwargs)

get_instance_by_uuid(*args, **kwargs)

get_node_by_instance_uuid(*args, **kwargs)

get_node_by_uuid(*args, **kwargs)

get_node_instances(*args, **kwargs)

map_instance(*args, **kwargs)

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)

Migrate single instance from source_node to destination_node

Parameters:

• instance –
• source_node –
• destination_node –

Returns:

remove_instance(*args, **kwargs)

remove_node(*args, **kwargs)

to_string()

to_xml()

unmap_instance(*args, **kwargs)