Engineering Reconfigurable Distributed Software Systems: Issues Arising for Pervasive Computing

Zarras, Apostolos; Fredj, Manel; Georgantas, Nikolaos; Issarny, Valérie

doi:10.1007/11916246_19

Cited by 15 publications

(8 citation statements)

References 22 publications

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“…The ad hoc, seamless service composition is a commonly highlighted property of pervasive networking systems, being identified as a critical research issue for the success of ubiquitous computing [58]. This is mainly motivated by the own nature of such smart environments, which are fully saturated with heterogeneous devices, thus generating a highly diverse characterization [309]. On the one hand, pervasive spaces embody a significant number of heterogeneous devices with disparate capabilities including full-function and resource-constrained computing and networking equipment.…”

Section: Service Integration and Composition In Pervasive Computingmentioning

confidence: 99%

Service architecting and dynamic composition in pervasive smart ecosystems for the internet of things based on sensor network technology

Familiar

Martínez

Garcia-Rubio

2014

Journal of Ambient Intelligence and Smart Environments

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Why pervasive awareness and Ambient Intelligence are perceived by a great part of the academia and industry as a massive revolution in the short-term? In our best knowledge, a cornerstone of this thought is based on the fact that the ultimate nature of the smart environment paradigm is not in the technology itself, but on a people-centered approach. Perhaps, is in this apparently simple conception where precisely lies the boldness of this promising vision, which has been consolidated in recent years with the emerging proliferation of mobile, personal, portable, wearable and sensory computing: to reach everyone and everywhere. On the one hand, it touches our daily lives in a close manner, minimizing the required attention from the users, anticipating to their needs with the main intention of redefining our idea of Quality of Experience. On the other hand, this new wave impacts everywhere at both global and personal scales allowing expanded connectivity between devices and smart objects, in a dynamic and ubiquitous manner, as a natural extension of the physical world around us.According to the above, this doctoral dissertation focuses on contributing to the integration of software and networking engineering advances in the field of pervasive smart spaces and environment using sensor networks. This is founded on the convergence of some information technology and computer science paradigms, such as service and agent orientation, semantic technologies and knowledge management in the framework of pervasive computing and the Internet of Things. To this end, the nSOM (nano Service-Oriented Middleware) and nSOL (nano Semantics-Oriented Language) approaches are presented. Firstly, the nSOM proposal defines a service-oriented platform for the implementation, deployment and exposure of agentbased in-network services to the Internet cloud on heterogeneous sensor devices. Secondly, the nSOL solution enables an abstraction for supporting ubiquitous service composition based on semantic knowledge management. The integration of both contributions leads to the formal modelling and practical development of adaptive virtual sensor services for pervasive Ambient Intelligence ecosystems. This work includes also the related performance characterization of the resulting prototype according to several metrics such as code size, volatile memory footprint, CPU overhead, service time delay and battery lifetime. Main foundations and outcomes presented in this essay are contextualized in the following European Research Projects: µSWN (FP6 code: IST-034642), DiYSE (ITEA2 code: 08005) and LifeWear (ITEA2 code: 09026).

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Section: Service Integration and Composition In Pervasive Computingmentioning

confidence: 99%

Service architecting and dynamic composition in pervasive smart ecosystems for the internet of things based on sensor network technology

Familiar

Martínez

Garcia-Rubio

2014

Journal of Ambient Intelligence and Smart Environments

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“…Indeed, a recent paper about reconfiguration by Zaras et. al [29] concluded that most current reconfiguration techniques are being used "in the context of stationary systems, where reconfiguration is centrally controlled." They go on to develop a sophisticated reconfiguration technique for a more dynamic and decentralized context.…”

Section: An Exploration Of Managerial Techniques and Patternsmentioning

confidence: 99%

Dependable Management of Untrusted Distributed Systems

Minsky¹

2014

Preprint

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The conventional approach to the online management of distributed systemsrepresented by such standards as SNMP for network management, and WSDM for systems based on service oriented computing (SOC)-relies on the components of the managed system to cooperate in the management process, by providing the managers with the means to monitor their state and activities, and to control their behavior. Unfortunately, the trust thus placed in the cooperation of the managed components is unwarranted for many types of systems-such as systems based on SOA-making the conventional management of such systems unreliable and insecure. This paper introduces a radically new approach to the management of distributed systems, called governance-based management (GBM), which is based on a middleware that can govern the exchange of messages between system components. GBM has a substantial ability to manage distributed systems, in a reliable and secure manner, even without any trustworthy cooperation of the managed components. And it can fully incorporate the conventional management techniques wherever such cooperation can be trusted. GBM also supports a reflexive mode of management, which manages the management process itself, making it safer. However, GBM is still a work in progress, as it raises several open problems that needs to be addressed before this management technique can be put to practice.1 Reactive management also differs from general software management, which involves, testing, debugging, people management, etc. 2 By "managers" we mean either people, such as operators, or software components designed for various management tasks.trusted to provide managers with means to monitor their state and activities, and to control their behavior. Standards have been developed to facilitate such cooperation by components. The first of these standards was SNMP (Simple Network Management Protocol)[7], developed about 20 years ago for the management of networks. An analogous standard, called WSDM (Web Services Distributed Management) [16], has been devised more recently for the management of systems based on service oriented computing (SOC). Moreover, the reliance on the cooperation of components is common to most, if not all, recent approaches to the reactive management of distributed systems. In particular, autonomic systems [28] have been conceived to be composed of "autonomic components" that are to be designed in conformance with the policies of the system they are part of. Same is true for the following attempts: the concept of Self-Managed Systems by Kramer et al. [15]; the various versions of Policy Based Management (PBM) [8,17]; and several attempts at management via Computational Reflection [9,1]. Some of these works employ either SNMP or WSDM standards; other use different types of cooperation.Unfortunately, the trust thus placed by the conventional management techniques in the cooperation of the managed components is unwarranted for many types of systems. This is the case, in particular, for the application layer of many distr...

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“…To provide a background on the dynamic substitution of basic engineering elements in conventional distributed systems, we rely on a generic reconfiguration cycle, which provides an abstract descriptive view of reconfiguration approaches that have been proposed in the past (the interested reader may refer to (Zarras et al, 2006) for a more detailed survey).…”

Section: Background and Related Work Backgroundmentioning

confidence: 99%

Service Intelligence and Service Science

2011

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Service-oriented architectures evolved rapidly as the solution to the latest requirements for loosely-coupled distributed computing. Into this broad context several approaches emerged towards the discovery and the systematic composition/orchestration of services. One of the next challenges in this field is the maintenance of service-oriented architectures towards accomplishing the ultimate goal of constructing eternal service-oriented systems out of looselycoupled basic engineering elements. The particular problem we deal with in this paper is the dynamic maintenance of service orchestrations in the presence of unavailable services. Specifically, we focus on the dynamic substitution of stateful services that become unavailable during the execution of service orchestrations. As an answer to this problem, we propose the SIROCO middleware platform which is further detailed along with an experimental evaluation of our first prototype. Our findings show that SIROCO provides the necessary means for achieving dynamic maintenance with a reasonable expense on the execution of service orchestrations.

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Engineering Reconfigurable Distributed Software Systems: Issues Arising for Pervasive Computing

Cited by 15 publications

References 22 publications

Service architecting and dynamic composition in pervasive smart ecosystems for the internet of things based on sensor network technology

Service architecting and dynamic composition in pervasive smart ecosystems for the internet of things based on sensor network technology

Dependable Management of Untrusted Distributed Systems

Service Intelligence and Service Science

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