+ @staticmethod
+ def get_node_arch(node):
+ """Return arch of the node.
+ Default to x86_64 if no arch present
+
+ :param node: Node created from topology.
+ :type node: dict
+ :returns: Node architecture
+ :rtype: str
+ """
+ try:
+ return node['arch']
+ except KeyError:
+ node['arch'] = 'x86_64'
+ return 'x86_64'
+