Two-way Integration of Service-Oriented Systems-of-Systems with the Web of Things

Abstract

The Internet of Things (IoT) is nowadays affected by significant interoperability issues. One of the most popular countermeasures is the Web of Things (WoT), proposed recently in a consistent standardization effort. On the other hand, several IoT-oriented frameworks are already established in industrial scenarios and provide SOA-like features such as discovery and orchestration. In this paper, we study how to bridge these two worlds by proposing a tool that enables a two-way translation between a WoT ecosystem and a System-of-Systems composed of well-described Web services. We evaluate the efficiency and scalability of our solution over the Eclipse Arrowhead framework through a series of experiments that assess the scalability of our solution under realistic workloads.

An IoT Toolchain Architecture for Planning, Running and Managing a Complete Condition Monitoring Scenario

“…The Web of Things Arrowhead Enabler (WAE) [26] is pivotal for the proposed toolchain, and it is an official part of the Eclipse Arrowhead framework 9 -due to Arrowhead repository naming conventions, WAE is referred as application-skeleton-wot. Its role is to bridge the Eclipse Arrowhead Framework with the WoT.…”

Joint Power Control and Structural Health Monitoring in Industry 4.0 Scenarios using Eclipse Arrowhead and Web of Things

“…The Orchestration system provides a local cloud administrator with the capability of setting up orchestration rules, which are basically able to instruct systems on which service they have to query in order to participate in a certain process [7]. Furthermore, a recently introduced core system, the WAE, presented in Section II-C, supports the automated integration of WoT scenarios [5].…”

“…The WAE 4 is an official component of the Eclipse Arrowhead Project. The tool enables seamless integration between Arrowhead services and WTs [5]. The WoT is an effective solution to the interoperability problem in the IoT environment.…”

“…The WTM is developed using the Thingweb nodewot framework, which is the WoT implementation in Node.js. The TDD is the open-source LinkSmart Thing Directory 5 . The Arrowhead local cloud is again deployed on a Qotom mini-PC.…”

“…For this reason, we complement WoT with a second framework, i.e., the Eclipse Arrowhead Framework (AHF), which is a service-oriented architecture (SOA) allowing lookup, late binding and loose coupling within IoT-based industrial scenarios [4]. Recently, the AHF has included the WoT-Arrowhead Enabler (WAE) within its core systems, which enables the seamless integration of different WoT ecosystems via the AHF by offering discovery, authorization and orchestration capabilities [5]. We leverage the AHF together with the WAE to integrate a monitoring and an actuation WoT ecosystem.…”