def get_storage_node_by_name(self, name):
"""Get storage node by name(host@backendname)"""
try:
storages = list(
filter(lambda storage: storage.host == name,
self.get_storage_node_list()))
if len(storages) != 1:
raise exception.StorageNodeNotFound(name=name)
return storages[0]
except Exception as exc:
LOG.exception(exc)
raise exception.StorageNodeNotFound(name=name)
def get_storage_node_by_name(self, name):
"""Get storage node by name(host@backendname)"""
try:
storages = [
storage for storage in self.get_storage_node_list()
if storage.host == name
]
if len(storages) != 1:
raise exception.StorageNodeNotFound(name=name)
return storages[0]
except Exception as exc:
LOG.exception(exc)
raise exception.StorageNodeNotFound(name=name)
def get_node_by_pool_name(self, pool_name):
pool = self._get_by_name(pool_name)
for node_name in self.neighbors(pool.name):
node = self._get_by_name(node_name)
if isinstance(node, element.StorageNode):
return node
raise exception.StorageNodeNotFound(name=pool_name)
def remove_node(self, node):
self.assert_node(node)
try:
super(StorageModelRoot, self).remove_node(node.host)
except nx.NetworkXError as exc:
LOG.exception(exc)
raise exception.StorageNodeNotFound(name=node.host)
def get_node_by_name(self, name):
"""Get a node by node name
:param node: :py:class:`~.StorageNode` object or node name
"""
try:
return self._get_by_name(name.split("#")[0])
except exception.StorageResourceNotFound:
raise exception.StorageNodeNotFound(name=name)
def create_storage_node(self, name):
"""Create the storage node by querying the Cinder API."""
try:
_node = self.cinder.get_storage_node_by_name(name)
_volume_type = self.cinder.get_volume_type_by_backendname(
# name is formatted as host@backendname
name.split('@')[1])
storage_node = element.StorageNode(host=_node.host,
zone=_node.zone,
state=_node.state,
status=_node.status,
volume_type=_volume_type)
return storage_node
except Exception as exc:
LOG.exception(exc)
LOG.debug("Could not create storage node %s.", name)
raise exception.StorageNodeNotFound(name=name)
def get_node_by_name(self, name):
try:
return self._get_by_name(name.split("#")[0])
except exception.StorageResourceNotFound:
raise exception.StorageNodeNotFound(name=name)
