Matching Cloud Services with TOSCA

Abstract

To those who made this possible, both who can be here and understand and who cannot. AbstractThe OASIS TOSCA specication aims at enhancing the portability of cloud-based applications by dening a language to describe and manage service orchestrations across heterogeneous clouds. A service template is dened as an orchestration of typed nodes, which can be instantiated by matching other service templates. In this thesis, after dening the notion of exact matching between TOSCA service templates and node types, we dene three other types of matching (plug-in, exible and white-box ), each permitting to ignore larger sets of non-relevant syntactic dierences when type-checking service templates with respect to node types. We also describe how service templates that plug-in, exibly or whitebox match node types can be suitably adapted so as to exactly match them.i

Modelling and Analysing Cloud Application Management

“…On the other hand, as we anticipated in Sect. 6, another interesting direction for future work is to extend the matching and adaptation reuse techniques based on TOSCA [4,7,19] to take into account the management behaviour of cloud-based applications.…”

“…TOSCA's rich type system has been exploited to devise various techniques that facilitate the the reuse of available services, like [4,7,19]. Those techniques permit to match and adapt (fragments of) existing ServiceTemplates to implement a desired NodeType by checking that the features of the latter are all provided by the former.…”

“…Namely, they do not check whether the behaviour of a (fragment of) ServiceTemplate is compatible with the desired behaviour of a NodeType. As our proposal extends TOSCA's type system, it can be naturally exploited to extend the reuse techniques based on TOSCA, like [4,7,19], to account for management behaviour.…”

ToscaMart: A method for adapting and reusing cloud applications

“…The implementations are obtained by adapting the determined TOSCA topology fragments to exactly match desired components [13]. This suffices to reuse such fragments to deploy cloud solutions that rely on the desired components [14].…”

“…This suffices to reuse such fragments to deploy cloud solutions that rely on the desired components [14]. This is thanks to the powerful way in which TOSCA supports the processing of cloud application specifications.…”