ABSTRACT

The number of service offerings in cloud manufacturing continues to grow, so that service level agreement (SLA) within cloud manufacturing is increasingly used to ensure the coordination of the cross-organisational business processes between the cloud service providers (CSP) and cloud service consumers (CSC). The definition of SLA and monitoring SLA’s performance are significant and should be highly valued to ensure the effectiveness and efficiency of business services. At present, the third-party monitoring methods based on service credit are mainly applied in cloud manufacturing environments. There is no effective supervision mechanism to monitor the third party and no efficient punishment mechanism on SLA violation. To address aforementioned issues, this paper proposes a novel Service Level Agreement model by integrating Blockchain and Smart Contract (SLABSC), in which trust issues among CSP, CSC, and the third-party monitoring can be addressed through Blockchain technologies. The method proposed in this paper realises the full functionality of SLABSC and facilitates data security, and it can be used to supervise CSP to provide better services. Experiments results show that the performance of the proposed model is valid and efficient.

摘要

云制造中的服务产品数量持续增长，因此云制造中的服务水平协议 (SLA) 越来越多地用于确保云服务提供商 (CSP) 和云服务消费者之间的跨组织业务流程的协调。 CSC)。SLA 的定义和监控 SLA 的性能很重要，应该受到高度重视，以确保业务服务的有效性和效率。目前，基于服务信用的第三方监控方式主要应用于云制造环境。没有有效的监督机制来监督第三方，也没有有效的对违反 SLA 的惩罚机制。针对上述问题，本文通过整合区块链和智能合约 (SLABSC) 提出了一种新颖的服务水平协议模型，其中 CSP、CSC 和第三方监控之间的信任问题可以通过区块链技术解决。本文提出的方法实现了SLABSC的全部功能，有利于数据安全，可用于监督CSP提供更好的服务。实验结果表明，所提模型的性能是有效且高效的。