VieSLAF : increasing the versatility of Grid QoS by applying SLA-mapping techniques

Abstract

Diese Arbeit stellt VieSLAF (Vienna Service Level Agreement Framework) vor. Dieses Framework kann für die Veröffentlichung und Suche nach freigegebenen Web-Services verwendet werden. Um die heterogenen Darstellungen der SLA-templates zu überwinden, wird das Konzept der SLA-mappings verwendet. Für die periodische Berechnung der QoSs wird Monitoring Service eingesetzt. Ein Adaptierungskonzept ist auch vorhanden um die angelegte Kategorien automatisch an die Benutzer- und Providerwünsche anzupassen.<br />

This master thesis presents the implementation and concepts behind VieSLAF framework (Vienna Service Level Agreement Framework).<br />VieSLAF facilitates specification and management of SLA-mappings which are used to bridge the gap between non-matching SLA-templates with syntactical and semantical differences. Service consumers may discover appropriate services on demand in available template categories, define SLA-mappings to available templates if necessary and finally start the negotiation with selected services and their providers. Service providers can publish their services using some of provided domain representations, known as categories, and also define own SLA-mappings, if the initialized templates differ from categories' templates.<br />Monitoring service is used for periodically calculation of QoSs. The concept for automatically adaptation of created categories is also provided in VieSLAF framework where the consumers' and providers' wishes are applied on categories.<br />