Execution method and system for combination service

Abstract

The invention discloses an execution method and system for a combination service. The method comprises the following steps: analyzing a received combination service request into a service execution example; dispatching the service execution example; executing internal activities of the service execution example, and obtaining execution results; sending external activities of the service execution example to a service execution agent module and receiving and returning execution results; triggering and carrying out corresponding subsequent activities of the internal activities or external activities based on the execution results; executing the external activities, sent by an execution kernel module, of the service execution example and returning the execution results to the execution kernel module; monitoring the execution state of the service execution example; and when the execution state of the service execution example is abnormal, replacing the service execution example. The execution method and system for the combination service enable the execution of the combination service process to be adaptive to the occurrence of abnormity more flexibly.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a method, system and device for executing composite services. Background technique [0002] At present, Web services have been widely distributed in the Internet. These services may come from different service providers and run on different hardware platforms and operating systems. The dynamic publishing, updating, invalidation and deletion of service individuals, the quality of service The dynamic change of attributes and the dynamic change of the network environment in which the service operates will affect the quality of the composite service. In particular, the dynamic change of service quality makes it difficult to guarantee the quality of composite services in a long-term and stable manner, and the initially reliable composite services may degrade in quality or even fail. At the same time, although the application systems of many web applications such as finance ...

AI Technical Summary

Problems solved by technology

Most of the existing execution engines only support static service combinations, that is, the number of services that make up the business process, the binding of services, and the sequence of service execution are all determined before the process is executed. Therefore, the existing BPEL execution engines cannot Well support the dynamic evolution of business processes and realize self-adaptive service composition

[0005] In addition, affected by factors such as the dynamic change of the composite service execution environment and the autonomy of Web services, various abnormal situations may be encountered during the operation of the composite service

For example, due to the inherent software errors of Web services, abnormal results are generated, which in turn affects the correct operation of composite service execution instances

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