Dynamic reconfiguration in self-adaptive systems considering non-functional properties

  • Authors:

  • Hisayuki Horikoshi;Hiroyuki Nakagawa;Yasuyuki Tahara;Akihiko Ohsuga

  • Affiliations:

  • The University of Electro-Communications, Tokyo, Japan;The University of Electro-Communications, Tokyo, Japan;The University of Electro-Communications, Tokyo, Japan;The University of Electro-Communications, Tokyo, Japan

  • Venue:
  • Proceedings of the 27th Annual ACM Symposium on Applied Computing
  • Year:
  • 2012

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Abstract

Self-adaptive systems have recently been receiving much attention because of their ability to cope with the changes of environment, failures, and unanticipated events. These systems need an adaptation mechanism, which automatically computes the possible configurations, and decides the most appropriate configuration to fit the environment. In particular, the satisfaction of non-functional requirements must be considered when selecting the best reconfiguration. However, there are trade-off problems among non-functional requirements. Moreover, the adaptation mechanisms are typically developed separately from the components to be implemented, and it complicates the construction of such systems. We propose (1) a feature-oriented analysis technique, which can identify adaptation points, and calculate the contribution to non-functional goals of the configuration; (2) a component specification model, which extends an architectural description language for self-adaptation; (3) a reconfiguration framework aimed to reduce the complexity of the reconfiguration and generate the best configuration at run-time. We evaluate the feasibility of our framework by four different scenarios, and show that our framework reduces the complexity of the reconfiguration, and solves the trade-off problem among non-functional requirements.