Within cloud-based internet of things (IoT) applications, typically cloud providers employ Service Level Agreements (SLAs) to ensure the quality of their provisioned services. Similar to any other contractual method, an SLA is not immune to breaches. Ideally, an SLA stipulates consequences (e.g. penalties) imposed on cloud providers when they fail to conform to SLA terms. The current practice assumes trust in service providers to acknowledge SLA breach incidents and executing associated consequences. Recently, the Blockchain paradigm has introduced compelling capabilities that may enable us to address SLA enforcement more elegantly. This paper proposes and implements a blockchain-based approach for assessing SLA compliance and enforcing consequences. It employs a diagnostic accuracy method for validating the dependability of the proposed solution. The paper also benchmarks Hyperledger Fabric to investigate its feasibility as an underlying blockchain infrastructure concerning latency and transaction success/fail rates.

中文翻译：

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一种基于区块链的方法，用于评估 SLA 保证的物联网服务的合规性

在基于云的物联网 (IoT) 应用程序中，云提供商通常采用服务级别协议 (SLA) 来确保其提供的服务的质量。与任何其他合同方法类似，SLA 也不能免于违规。理想情况下，SLA 规定了当云提供商不遵守 SLA 条款时对他们施加的后果（例如处罚）。当前的做法假设对服务提供商的信任能够确认 SLA 违规事件并执行相关后果。最近，区块链范式引入了引人注目的功能，使我们能够更优雅地解决 SLA 执行问题。本文提出并实施了一种基于区块链的方法，用于评估 SLA 合规性和执行后果。它采用诊断准确性方法来验证所建议解决方案的可靠性。