Online migration method and equipment for running example during combined service evolution

Abstract

The invention provides an online migration method and online migration equipment for a running example during combined service evolution. The method comprises the following steps of: acquiring a change region between an original flow model and a target flow model; if the running example to be migrated is positioned in the change region, detecting whether a target path equivalent to an existing execution path of the example to be migrated exists in the target flow model; and if the target path equivalent to the existing execution path of the example to be migrated exists in the target flow model, migrating the example to be migrated to the target path. The online migration method and the online migration equipment for the running example during combined service evolution are used for realizing simple and high-accuracy online migration of the running example.

Description

technical field [0001] The invention relates to composite service technology, in particular to a method and device for online migration of running instances in composite service evolution, and belongs to the field of computer technology. Background technique [0002] In recent years, with the continuous development of Internet technology, more and more resources have been gathered on the network, including not only rich physical resources such as computing and storage, but also a large number of software and service resources. The development of service-based distributed application systems It has become an important direction in the computer field. [0003] Web service technology can be used to solve the problem of application integration between different platforms / systems, and provide a technical basis for the automation of business processes across organizational boundaries. Generally, complex business logic is not encapsulated into a single Web service, but in order to...

AI Technical Summary

Problems solved by technology

This mechanism provides dynamic migration between models of different versions of the same composite service, and solves the problem of poor ability to cope with changes in traditional workflow and business process systems

However, during the evolution of composite services, the semantics, message flow, control flow, and data flow of the business process model may change, which may lead to problems such as instance running synchronization failure, deadlock, and semantic errors.

[0006] Aiming at the state migration of process instances during composite service evolution, relevant research at home and abroad has raised an important issue—Dynamic Change Bug, which means that the state in the old process instance is changed in the new process instance No suitable corresponding state can be found (after evolution, some activities will be executed multiple times or skipped unreasonably)

Images