NeCoMan: middleware for safe distributed-service adaptation in programmable networks

Abstract

NeCoMan middleware customizes dynamic adaptation of point-to-point-based network services in programmable networks, taking into account the properties of the network services involved as well as the reconfiguration semantics. Programmable networks let third parties dynamically reprogram the network elements. By opening the execution environment of routers, firewalls, base stations, and so on, users and service providers can adapt the behavior of these network elements to meet their own needs. Programmable networks are therefore an interesting technology for building adaptive networks as well as for supporting the evolution of networking software. 1

A Consistency Framework for Dynamic Reconfiguration in AO-Middleware Architectures

“…-a coordination protocol such as Necoman protocol [5] and a transaction protocol encapsulated as an aspect and woven as a "before" advice at the top of the communications stack at join points 4 and 5 to address dependency inconsistencies. -a caretaker aspect that proxies the aspect being reconfigured at join point 2 to address unsynchronised unbinding of distributed aspects; such that on receiving a message from a client the caretaker instructs the client that the aspect has been removed.…”

Adding dynamic reconfiguration support to JBoss AOP

“…one fragmenting and one reassembling bundle) 5 . These interceptors are then bound to the application by an appropriate set of AdviceBinding instances.…”

“…In short, we previously developed the NeCoMan reconfiguration support to coordinate the addition, replacement and removal of network services that are similar to the services encapsulated by the distributed aspects this paper focusses on [5,4]. The emphasis of NeCoMan is on the dynamic reconfiguration and evolution of component-based applications.…”

“…The achievement of both safety properties has already been addressed extensively in the space of dynamic reconfiguration of component-based distributed systems [7,9,1,5]. This position paper argues that existing coordination protocols developed in this space can be largely reused for distributed aspect weaving.…”

“…This protocol originates from one of the coordination protocols that the NeCoMan dynamic reconfiguration support employs [5,4]. As Section 3 further explains in more detail, NeCoMan conducts (among others) safe distributed recompositions in programmable networks.…”