Under Service oriented architecture (SOA), a systemsuch as an enterprise-consists of multiple heterogeneous servers (service providers), which may be distributed over a wide area of network, and may be managed under different administrative domains. One of the goals of this work is to enable the system as a whole (i.e., the enterprise) to impose global constraints on the interactive behavior of the various heterogeneous servers.Moreover, individual servers typically make explicit or implicit commitments to their clients regarding the services they provide. Such commitments may include such things as privacy policies, and SLAs, as well as run-time promises to reserve certain merchandise for a specified time period. But the SOA methodology provides no guarantees to clients that the commitment made by a given server would actually be satisfied. Our second goal is to enforce certain types of commitments made by servers, provided that these commitments conform to the global constraints imposed by the system at large.Our technique employs LGI-based middleware to enforce stateful policies, and does not require any change of the conventional SOAP-based protocol, the UDDI server, or the programs employed by servers and their clients.
We are presenting a collaborative framework to enforce server commitments, and to regulate server interactive behavior in SOA systems. Trusted components collaborate to establish a network of enforcement components, one per server, to maintain proofs of what servers have committed with their clients and peer servers. The trusted components and the enforcement components also collaborate to make servers accountable for their commitments, and to enforce policies on the interactions between the servers and their clients/peer servers. In our framework, such collaborative efforts are explicitly stated in the form of policies to ease the management of collaborative processes. Our implementation is based on the LGI mechanism, complies with SOA standards, and does not require any change of the conventional SOAP-based protocol, the UDDI server, or the programs employed by servers and their clients.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.