Log2MS: a framework for automated refactoring monolith into microservices using execution logs

Service models and modelling are vital in monolith-to-microservice architecture (MSA) migration of legacy systems. Prior work focuses on service identification, whereas few efforts have been investigating microservice models and modelling. It remains an immature field of Model-Driven Development (MDD) of MSA due to it lack modelling methods and tools for monolith-to-MSA migration. We present Log2MS, an MDD framework for automated transforming legacy monolithic architecture into MSA using execution logs only. We define microservice and microservice sequence diagrams to support monolith-to-MSA structural and behavioural modelling; we present a source-code free monolith-to-MSA approach and a prototypical tool which support automatically microservices identification and MSA models generation; we developed a graphical editor to represent the generated MSA models for further interactively modelling. Log2MS is evaluated being of applicability, robustness, and effectiveness by comparative experiments with 2 representative approaches and applying to 4 projects.