Abstract
In the ubiquitous Internet of Things (IoT) environment, reusing objects instead of creating new one has become important in academics and industries. The situation becomes complex due to the availability of a huge number of connected IoT objects, and each individual service creates a new object instead of reusing the existing one to fulfill a requirement. A well-standard mechanism not only improves the reusability of objects but also improves service modularity and extensibility, and reduces cost. Web Objects enabled IoT environment applies the principle of reusability of objects in multiple IoT application domains through central objects repository and microservices. To reuse objects with microservices and to maintain a relationship with them, this study presents an architecture of Web of Objects platform. In the case of a similar request for an object, the already instantiated object that exists in the same or from other domain can be reused. Reuse of objects through microservices avoids duplications, and reduces time to search and instantiate them from their registries. Further, this article presents an algorithm for microservices and related objects discovery that considers the reusability of objects through the central objects repository. To support the reusability of objects, the necessary algorithm for objects matching is also presented. To realize the reusability of objects in Web Objects enabled IoT environment, a prototype has been designed and implemented based on a use case scenario. Finally, the results of the prototype have been analyzed and discussed to validate the proposed approach.
Highlights
In the Ubiquitous Internet of Things (IoT) environment, millions of objects are connected to the web, for intelligent and user-preferred IoT service provisioning
The service implementation in monolithic approach consists a single codebase with all logic to discover, inference and execute service features with Composite Virtual Object (CVO) directly at the same place
The list of relevant CVOs was stored in a single service template because the logic of all service features was implemented as a single unit
Summary
In the Ubiquitous Internet of Things (IoT) environment, millions of objects are connected to the web, for intelligent and user-preferred IoT service provisioning. An efficient and effective mechanism of reusing of already available objects and their data may overcome the problems, and improve the smartness of objects for more intelligent IoT services. The reusability of objects across the different platforms has been discussed in horizontally layered architecture platforms such as oneM2M [1]. Available online: https://www.ibm.com/developerworks/cloud/library/clbluemix-microservices-in-action-part-1-trs/index.html (accessed on 19 September 2017). Services are developed and updated separately and recurrently for different users, which increase the overall cost of service development, deployment, and maintenance. This cost can be minimized by distributing the functionality of a large IoT service into a group of several small services. Microservices pattern is the extension of service oriented architecture (SOA)
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