def find_node_list(tree):
"""
Return list of remote nodes from the specified element tree
etree.Element tree -- an element to search remote nodes in
"""
node_list = [
PacemakerNode(
nvpair.getparent().getparent().attrib["id"],
nvpair.attrib["value"]
)
for nvpair in tree.xpath(
".//primitive[{is_remote}]/{has_server}"
.format(
is_remote=_IS_REMOTE_AGENT_XPATH_SNIPPET,
has_server=_HAS_SERVER_XPATH_SNIPPET,
)
)
]
node_list.extend([
PacemakerNode(primitive.attrib["id"], primitive.attrib["id"])
for primitive in tree.xpath(
".//primitive[{is_remote} and not({has_server})]"
.format(
is_remote=_IS_REMOTE_AGENT_XPATH_SNIPPET,
has_server=_HAS_SERVER_XPATH_SNIPPET,
)
)
])
return node_list
def test_find_multiple_nodes(self):
self.assert_nodes_equals(
"""
<resources>
<primitive class="ocf" id="R1"
provider="pacemaker" type="remote"
>
<instance_attributes>
<nvpair name="server" value="H1"/>
</instance_attributes>
</primitive>
<primitive class="ocf" id="R2"
provider="pacemaker" type="remote"
>
<instance_attributes id="first-attribs">
<nvpair name="server" value="H2"/>
</instance_attributes>
</primitive>
</resources>
""",
[
PacemakerNode("R1", "H1"),
PacemakerNode("R2", "H2"),
],
)
def find_node_list(tree):
"""
Return list of guest nodes from the specified element tree
etree.Element tree -- an element to search guest nodes in
"""
node_list = []
for meta_attrs in tree.xpath("""
.//primitive
/meta_attributes[
nvpair[
@name="remote-node"
and
string-length(@value) > 0
]
]
"""):
host = None
name = None
for nvpair in meta_attrs:
if nvpair.attrib.get("name", "") == "remote-addr":
host = nvpair.attrib["value"]
if nvpair.attrib.get("name", "") == "remote-node":
name = nvpair.attrib["value"]
if host is None:
host = name
if name:
# The name is never empty as we only loop through elements with
# non-empty names. It's just we loop through nvpairs instead of
# reading the name directly.
node_list.append(PacemakerNode(name, host))
return node_list
def test_get_multiple_nodes(self):
self.assert_nodes_equals(
"""
<resources>
<primitive>
<meta_attributes>
<nvpair name="remote-node" value="G1"/>
<nvpair name="remote-addr" value="G1addr"/>
</meta_attributes>
</primitive>
<primitive>
<meta_attributes>
<nvpair name="remote-node" value="G2"/>
</meta_attributes>
</primitive>
</resources>
""",
[PacemakerNode("G1", "G1addr"), PacemakerNode("G2", "G2"),],
)
def test_find_nodes_without_server(self):
self.assert_nodes_equals(
"""
<resources>
<primitive class="ocf" id="R1"
provider="pacemaker" type="remote"
>
</primitive>
</resources>
""", [
PacemakerNode("R1", "R1"),
])
def test_find_nodes_with_empty_server(self):
#it does not work, but the node "R1" is visible as remote node in the
#status
self.assert_nodes_equals(
"""
<resources>
<primitive class="ocf" id="R1"
provider="pacemaker" type="remote"
>
<instance_attributes id="first-attribs">
<nvpair name="server" value=""/>
</instance_attributes>
</primitive>
</resources>
""", [
PacemakerNode("R1", "R1"),
])
