4CaaSt: Comprehensive management of Cloud services through a PaaS

The 4CaaSt project aims at developing a PaaS framework that enables flexible definition, marketing, deployment and management of Cloud-based services and applications. The major innovations proposed by 4CaaSt are the blueprint and its management and lifecycle, a one stop shop for Cloud services and the management of resources in the PaaS level (including elasticity). 4CaaSt also provides a portfolio of ready to use Cloud native services and Cloud- aware immigrant technologies

A Device Message Bus for SensorNetworks

Sensor Networks are typically comprised of heterogeneous technologies as they cover a number of dierent elds, for example, home automation, intelligent transport systems, environmental monitoring and consumer electronics. In order for a systems provider to effciently communicate with such devices, it is necessary to create a layer of abstraction, called a Device Message Bus (DMB), which allows the heterogeneity of the devices to be hidden from the provider. The goal of this work is to create a system that provides a simple, high-level interface to many dierent types of sensors deployed by the systems provider and allows, in its most basic form, the sending of messages to the sensors, irrespective of which networking technology the sensors use to communicate. Additionally, this basic functionality needs to be augmented with features such as: support for at least REST, WS and UDP communication protocols, support for future growth of the system, which implies plug n play capability, discovery of new sensors, reliability of message transmission and scheduling of communication events. The result of the work is a complete system, that addresses the stated goal. The evaluation phase showed the correctness of the system, its fault tolerance and performance