Method and system for using a recursive event listener on a node in hierarchical data structure

A method comprising:

• determining, by a computer system in a computer network, if an event has occurred on a source node in a server of the computer system, the source node being one of a plurality of nodes that are related to each other in a hierarchy, each of the nodes representing a logical partition of a storage device in the computer system;
• and
• responsive to a determination that the event has occurred in the source node,
• determining, by the server, if an event listener is registered on the source node by a client in the computer system,
• responsive to a determination that the event listener is registered on the source node, notifying, the client, of an occurrence of the event in the source node, and
• responsive to a determination that the event listener is not registered on the source node,
• determining, by the server, if the source node has an ascendant node in the hierarchy,
• responsive to a determination that the source node has an ascendant node in the hierarchy,
• determining, by the server, if the event listener is registered on the ascendant node, and
• responsive to a determination that the event listener is registered on the ascendant node, notifying, the client, of the occurrence of the event in the source node.

An apparatus comprising:

• a server;
• a receiver module configured to cooperate with the server device to receive a request, from a client, to register an event listener on a source node, the source node being one of a plurality of nodes that are connected to each other in a hierarchy, each of the nodes representing a logical partition of a storage unit;
• a registration module configured to cooperate with receiver module to register the event listener on the source node, the event listener configured to notify, the client, of an occurrence of a first event in the source node;
• a hierarchy determination module configured to cooperate with the registration module for determining whether the source node has a descendant node in the hierarchy;
• and
• a hierarchy event processor module configured to cooperate with the hierarchy determination module to set, responsive to a determination that the source node has a descendant node in the hierarchy, the event listener to notify the client of an occurrence of a second event in the descendant node without requiring a registration of another event listener on the descendant node.