Loading...
2 results
Search Results
Now showing 1 - 2 of 2
- A Domain Specific Language for Automotive Systems IntegrationPublication . Oliveira, Renato; Pereira, David; Maia, Cláudio; Santos, PedroDeveloping complex safe and secure Cyber-Physical Systems (CPS) applications for the automotive domain is typically a complex task, due to the criticality inherent to this domain. Considering such known complexity of the development process, we propose a novel solution that aims to provide a quasiautomatic1 integration process between the different components of such CPS systems via the support of a Domain Specific Language (DSL) that provides several views of the system, abstracting away the more technical implementation details, while imposing system properties and restrictions that have the potential to be formally verified (either statically or at run-time) during design, and facilitates the process of customization and quasi-automatic build and deployment processes. In this paper, we briefly analyze the tools that are available and that cover partially the characteristics of our envisioned DSL, describe its building blocks, and show how it can be applied in a small, yet sufficiently complex CPS application whose architecture is very close to what we may expect for the modern and future generation of CPS application in the automotive domain.
- Improving and modeling the performance of a Publish-Subscribe message brokerPublication . Rocha, Rafael; Maia, Cláudio; Lino Ferreira, Luis; Varga, PalThe Event Handler – a publish-subscribe broker implemented over REST/HTTP(S) – is an auxiliary system of the Arrowhead framework for IoT applications. During this work we found that the existing implementation of the Event Handler suffers from serious performance issues. This paper describes the reengineering effort that ultimately enabled it to reach much more acceptable levels of performance, by using appropriate software configurations and design patterns. Additionally, we also illustrate how this enhanced version of the Event Handler can be modeled using Petri nets, to depict the performance impact of different thread pool configurations and CPU core availability. The main objective of this modeling process is to enable the estimation of the system’s performance to guarantee the required quality of service.