Event collection method and information processing apparatus

An information processing apparatus comprising:

• a communication unit that communicates with a sensor network connected to a plurality of nodes that includes a sensor node that transmits a detected event, and an intermediate node that relays the event;
• a storage unit that stores module definition information that serves to manage in an associated state a module identifier that identifies a module that processes the event, an input event type that indicates a type of the event processed by the module, and an aggregate attribute name that categorizes the event that is aggregated by the module, occurred event information that serves to manage in an associated state an occurred event type that indicates a type of the event, an occurred event attribute that includes an attribute name and an attribute value associated with the event, and an occurrence node identifier that identifies a node where the event has occurred, and topology information that serves to manage a connection relation of the node;
• and
• a processor that executes a procedure, the procedure including:
• collecting the event that occurs in the node,
• storing in an associated manner the occurred event information with the occurred event type, the occurred event attribute, and the occurrence node identifier,
• collecting the connection relation information of the node,
• storing topology information that serves to manage the connection relation information,
• retrieving on a per process basis for the module, based on the module definition information and the occurred event information, the occurrence node identifier categorized by the attribute value that corresponds to the attribute name identified by the aggregate attribute name, with the input event type associated with the occurred event type,
• determining, when there is a single retrieved occurrence node identifier with respect to the process of the module, a node identified by the occurrence node identifier as an installation destination of the module identified by the module identifier,
• referencing, when there is a plurality of retrieved occurrence node identifiers with respect to the process of the module, the topology information and determines an upper node common to the plurality of occurrence node identifiers as an installation destination of the module identified by the module identifier, and
• installing the module at the node determined to be the installation destination of the module.