资源约束下的基于类依赖关系的微服务识别方法

为有效提升基于微服务架构的遗留软件系统重构的自动化水平，根据存在依赖关系的两个类所操作的资源数据之间存在着一定相关性的原则，提出了一种资源约束下基于类依赖关系的微服务识别方法。首先，根据遗留软件程序中的类依赖关系构建类依赖关系图，并设置每个类的资源实体标签；然后，设计了基于资源实体标签的类依赖关系图划分算法，用以划分原软件系统和得到候选微服务；最后，合并依赖程度较高的候选微服务，从而得到最终的微服务集合。基于GitHub的4个开源项目的实验结果表明，所提方法具有高于90%的微服务划分准确率，证实了同时考虑不同类之间的依赖关系和资源约束对于微服务识别是合理和有效的。

Microservice identification method based on class dependencies under resource constraints

To effectively improve the automation level of legacy software system reconstruction based on the microservice architecture, according to the principle that there is a certain correlation between resource data operated by two classes with dependencies, a microservice identification method based on class dependencies under resource constraints was proposed. Firstly, the class dependency graph was built based on the class dependencies in the legacy software program, and the resource entity label for each class was set. Then, a dividing algorithm was designed for the class dependency graph based on the resource entity label, which was used to divide the original software system and obtain the candidate microservices. Finally, the candidate microservices with higher dependency degrees were combined to obtain the final microservice set. Experimental results based on four open source projects from GitHub demonstrate that, the proposed method achieves the microservice division accuracy of higher than 90%, which proves that it is reasonable and effective to identify microservices by considering both class dependencies and resource constraints.