Method, system and computer program product for enforcing access to event attributes of event streams in a complex event processing system

摘要

Computer-implemented method for enforcing access to event attributes of event streams in a complex event processing system, the method comprising: receiving a request for an outbound event attribute of a plurality of outbound event attributes of an outbound event stream; determining a processor component of a plurality of processor components, the processor component producing one or more outbound event attributes of the outbound event stream; determining one or more inbound event attributes of one or more inbound event streams, wherein the one or more inbound event attributes of the one or more inbound event streams are processed by the processor component to produce the one or more outbound event attributes of the outbound event stream; determining a dependency graph between the one or more inbound event attributes of the processor component and the one or more outbound event attributes of the processor component; determining an access policy comprising access requirements of the one or more outbound event attributes, including the step of: inheriting, for each inbound event attribute, access requirements associated with each of the inbound event attributes according to dependencies of the dependency graph; associating the access requirements of the determined access policy to the corresponding one or more outbound event attributes; comparing the access requirements of the requested outbound event attribute with access rights of the requester; and if the access rights of the requester fulfil the access requirements of the requested outbound event attribute: allowing to transfer the requested outbound event attribute to the requester.