def update_node_instance_attrs(cib, node_name, attrs, state_nodes=None):
"""
Update nvpairs in instance_attributes for a node specified by its name.
Automatically creates instance_attributes element if needed. If the node has
more than one instance_attributes element, the first one is modified. If the
node is missing in the CIB, it is automatically created if its state is
provided in state_nodes.
etree cib -- cib
string node_name -- name of the node to be updated
dict attrs -- attrs to update, e.g. {'A': 'a', 'B': ''}
iterable state_nodes -- optional list of node state objects
"""
node_el = _ensure_node_exists(get_nodes(cib), node_name, state_nodes)
# If no instance_attributes id is specified, crm_attribute modifies the
# first one found. So we just mimic this behavior here.
attrs_el = node_el.find("./instance_attributes")
if attrs_el is None:
attrs_el = etree.SubElement(
node_el,
"instance_attributes",
id=find_unique_id(cib, "nodes-{0}".format(node_el.get("id")))
)
update_nvset(attrs_el, attrs)
def update_node_instance_attrs(cib, node_name, attrs, state_nodes=None):
"""
Update nvpairs in instance_attributes for a node specified by its name.
Automatically creates instance_attributes element if needed. If the node has
more than one instance_attributes element, the first one is modified. If the
node is missing in the CIB, it is automatically created if its state is
provided in state_nodes.
etree cib -- cib
string node_name -- name of the node to be updated
dict attrs -- attrs to update, e.g. {'A': 'a', 'B': ''}
iterable state_nodes -- optional list of node state objects
"""
node_el = _ensure_node_exists(get_nodes(cib), node_name, state_nodes)
# If no instance_attributes id is specified, crm_attribute modifies the
# first one found. So we just mimic this behavior here.
attrs_el = node_el.find("./instance_attributes")
if attrs_el is None:
attrs_el = etree.SubElement(
node_el,
"instance_attributes",
id=find_unique_id(cib, "nodes-{0}".format(node_el.get("id")))
)
update_nvset(attrs_el, attrs)
def test_raise_if_missing(self):
for section in self.cib.tree.findall(".//configuration/nodes"):
section.getparent().remove(section)
assert_raise_library_error(
lambda: lib.get_nodes(self.cib.tree),
(severities.ERROR, report_codes.CIB_CANNOT_FIND_MANDATORY_SECTION,
{
"section": "configuration/nodes",
}, None),
)
def test_raise_if_missing(self):
for section in self.cib.tree.findall(".//configuration/nodes"):
section.getparent().remove(section)
assert_raise_library_error(
lambda: lib.get_nodes(self.cib.tree),
(
severities.ERROR,
report_codes.CIB_CANNOT_FIND_MANDATORY_SECTION,
{
"section": "configuration/nodes",
},
None
),
)
def update_node_instance_attrs(cib,
id_provider,
node_name,
attrs,
state_nodes=None):
"""
Update nvpairs in instance_attributes for a node specified by its name.
Automatically creates instance_attributes element if needed. If the node has
more than one instance_attributes element, the first one is modified. If the
node is missing in the CIB, it is automatically created if its state is
provided in state_nodes.
etree cib -- cib
IdProvider id_provider -- elements' ids generator
string node_name -- name of the node to be updated
dict attrs -- attrs to update, e.g. {'A': 'a', 'B': ''}
iterable state_nodes -- optional list of node state objects
"""
# Do not ever remove the nvset element or the node element, even if they
# are empty. There may be ACLs set in pacemaker which allow "write" for
# nvpairs (adding, changing and removing) but not nvsets. In such a case,
# removing the nvset would cause the whole change to be rejected by
# pacemaker with a "permission denied" message.
# https://bugzilla.redhat.com/show_bug.cgi?id=1642514
if not attrs:
return
cib_nodes = get_nodes(cib)
node_el = _ensure_node_exists(cib_nodes, node_name, state_nodes)
# If no instance_attributes id is specified, crm_attribute modifies the
# first one found. So we just mimic this behavior here.
attrs_el = node_el.find("./instance_attributes")
if attrs_el is None:
attrs_el = etree.Element(
"instance_attributes",
id=id_provider.allocate_id("nodes-{0}".format(node_el.get("id"))),
)
update_nvset(attrs_el, attrs, id_provider)
append_when_useful(node_el, attrs_el)
append_when_useful(cib_nodes, node_el)
def update_node_instance_attrs(
cib, id_provider, node_name, attrs, state_nodes=None
):
"""
Update nvpairs in instance_attributes for a node specified by its name.
Automatically creates instance_attributes element if needed. If the node has
more than one instance_attributes element, the first one is modified. If the
node is missing in the CIB, it is automatically created if its state is
provided in state_nodes.
etree cib -- cib
IdProvider id_provider -- elements' ids generator
string node_name -- name of the node to be updated
dict attrs -- attrs to update, e.g. {'A': 'a', 'B': ''}
iterable state_nodes -- optional list of node state objects
"""
# Do not ever remove the nvset element or the node element, even if they
# are empty. There may be ACLs set in pacemaker which allow "write" for
# nvpairs (adding, changing and removing) but not nvsets. In such a case,
# removing the nvset would cause the whole change to be rejected by
# pacemaker with a "permission denied" message.
# https://bugzilla.redhat.com/show_bug.cgi?id=1642514
if not attrs:
return
cib_nodes = get_nodes(cib)
node_el = _ensure_node_exists(cib_nodes, node_name, state_nodes)
# If no instance_attributes id is specified, crm_attribute modifies the
# first one found. So we just mimic this behavior here.
attrs_el = node_el.find("./instance_attributes")
if attrs_el is None:
attrs_el = etree.Element(
"instance_attributes",
id=id_provider.allocate_id("nodes-{0}".format(node_el.get("id"))),
)
update_nvset(attrs_el, attrs, id_provider)
append_when_useful(node_el, attrs_el)
append_when_useful(cib_nodes, node_el)
def test_success_if_exists(self):
self.assertEqual("nodes", lib.get_nodes(self.cib.tree).tag)
def test_success_if_exists(self):
self.assertEqual(
"nodes",
lib.get_nodes(self.cib.tree).tag
)
def get_node_names(cib: _Element) -> Set[str]:
return {
str(node.attrib["uname"])
for node in get_nodes(get_root(cib)).iterfind("./node")
}
