A Model-Driven Tool Chain for OCCI

Abstract

Abstract. Open Cloud Computing Interface (OCCI) is the only open standard for managing any kinds of cloud resources, e.g., Infrastructure as a Service, Platform as a Service, and Software as a Service. However, no model-driven tooling exists to assist OCCI users in designing, editing, validating, generating, and managing OCCI artifacts (i.e., extensions that represent specific application domains and configurations that define running systems). In this paper, we propose the first model-driven tool chain for OCCI called OCCIware Studio. This tool chain is based on a metamodel defining the static semantics for the OCCI standard in Ecore and OCL. OCCIware Studio provides OCCI users facilities for designing, editing, validating, generating, and managing OCCI artifacts. We detail the tooled process to define an OCCI extension. In addition, we show how the cloud user can leverage the generated tooling for this extension to create his own OCCI configurations and manage them in the cloud. We illustrate our paper with the OCCI Infrastructure extension defining OCCI-compliant compute, network, and storage resources.

Model-driven Configuration Management of Cloud Applications with OCCI

“…However, OCCI suffers from the lack of a precise definition of its concepts and a modeling framework to model, verify, validate, document, deploy and manage OCCI artifacts. To resolve the first issue, a metamodel from OCCI, named OCCIWARE METAMODEL (see Figure 1), has been proposed in and enhanced in (Zalila et al, 2017). It defines a precise semantics of OCCI concepts and introduces, among others, two key concepts: Extension and Configuration.…”

“…To resolve the second issue, a model-driven tool chain for OCCI, named OCCIWARE STUDIO, has been proposed (Zalila et al, 2017). It is built based on the OCCIWARE METAMODEL and proposed as a set of plugins for the Eclipse IDE.…”

“…In the same vein of this commercial graphical interface, several research projects are providing domain-specific modeling languages and frameworks that enable architects to describe and manage cloud platforms. Among these model-based solutions, we identify OCCIware (Zalila et al, 2017), which our work is an extension of. OCCIware has been successfully applied for the management of resources from different domains, including the management of Docker containers (Paraiso et al, 2016), and the management of mobile robots .…”

A Precise Model for Google Cloud Platform

“…GCP MODEL is conform to OCCIWARE METAMODEL, which is conform to ECORE METAMODEL. For details on the OCCIWARE METAMODEL, readers can refer to [6]. Thanks to OCCIWARE METAMODEL, our GCP MODEL provides a homogeneous specification language for GCP, which tackles the Informal Heterogeneous Documentation drawback, identified in Section II.…”

“…MDE allows to rise in abstraction from the implementation level to the model level, and to provide a graphical output and a formal verification of GCP structure and operations. Our GCP MODEL conforms to the OCCIWARE METAMODEL [6]. The latter is a precise metamodel of Open Cloud Computing Interface (OCCI) 2 , the open cloud standard, specified by the Open Grid Forum (OGF) and defining a common interface for describing any kind of cloud computing resources.…”