Service-based systems are applications built by composing pre-existing services. During design time and according to the specifications, a set of services is selected. Both, service providers and consumers exist in a service market that is constantly changing. Service providers continuously change their quality of services (QoS), and service consumers can update their specifications according to what the market is offering. Therefore, during runtime, the services are periodically and manually checked to verify if they still satisfy the specifications. Unfortunately, humans are overwhelmed with the degree of changes exhibited by the service market. Consequently, verification of the compliance specification and execution of the corresponding adaptations when deviations are detected cannot be carried out in a manual fashion. In this work, we propose a framework to enable online awareness of changes in the service market in both consumers and providers by representing them as active software agents. At runtime, consumer agents concretize QoS specifications according to the available market knowledge. Services agents are collectively aware of themselves and of the consumers' requests. Moreover, they can create and maintain virtual organizations to react actively to demands that come from the market. In this paper we show preliminary results that allow us to conclude that the creation and adaptation of service-based systems can be carried out by a self-organized service market system.
|Title of host publication||2012 IEEE sixth international conference on self-adaptive and self-organizing systems workshops SASOW 2012|
|Number of pages||6|
|Publication status||Published - 2012|
|Event||IEEE 6th international conference on self-adaptive and self-organizing systems workshops - Lyon, France|
Duration: 10 Sept 2012 → 14 Sept 2012
|Workshop||IEEE 6th international conference on self-adaptive and self-organizing systems workshops|
|Abbreviated title||SASOW 2012|
|Period||10/09/12 → 14/09/12|
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- multi-agent systems
- virtual organizations
- selfadaptive systems
- service market