面向服务优化组合的云双链结构

Cloud dual-chain structure oriented to service optimization composition

将区块链技术用于云制造平台,可使其具备资源管理去中心化、数据分布式存储、平台鲁棒的特性,然而在服务优化组合的实施过程中,其面临资源需中心化调度,数据录入依赖于区块生成时刻,执行方案缺乏动态适应性等问题。因此,提出面向服务优化组合的云双链结构(cloud dual-chain)。cloud dual-chain由制造服务链(manufacturing service chain,MSC)和过程数据链(process data chain,PDC)构成,将服务资源和组合方案进行分链管理,使云制造平台兼顾区块链特性及真实服务协同需求。cloud dual-chain的制造服务由企业自身管理,由智能合约根据任务顺序筛选形成MSC链,兼顾分布式和中心化管理;PDC基于服务组合方案产生,其节点可并行记录过程数据;若出现失效服务,在相应MSC节点中调用新服务,并在PDC节点中更新信息以确保执行方案具有动态适应性。实验表明,cloud dual-chain可实现服务的灵活管理、过程数据分布式并行录入,并赋予执行方案动态适应性。cloud dual-chain可为云制造平台的发展提供有效支持。

Applying blockchain technology to the cloud manufacturing platform(CMfg)endowed it with features such as decentralized resource management,distributed data storage,and platform robustness.However,during the implementation of service optimization composition,challenges are encountered,including the need for centralized resource scheduling,data entry dependence on the moment of block generation,and a lack of dynamic adaptability in the execution scheme.To address this,this paper proposed a solution in the form of cloud dual-chain oriented to service optimization composition.The cloud dual-chain comprised a manufacturing service chain(MSC)and a process data chain(PDC).It segregated the management of service resources and composition scheme into distinct chains,allowing the CMfg to reconcile blockchain characteristics with real-world service collaboration needs.The manufacturing service within the cloud dual-chain was self-managed by the enterprise,and the MSC chain was formed by smart contracts based on task orders,balancing distributed and centralized management.The PDC,generated based on service composition,recorded process data in parallel.In case of service failure,a new service was invoked in the corresponding MSC node,updating the information in the PDC node to ensure dynamic adaptability of the execution plan.Experimental results demonstrate that cloud dual-chain facilitates flexible service management,distributed parallel entry of process data,and provides dynamic adaptability to execution scheme.Cloud dual-chain can effectively support the development of CMfg.