Service-oriented distributed work flow management system

Abstract

The invention discloses a service-oriented distributed work flow management system, which comprises a service container for supporting operational environment when service example exists, a client end interface module, a distributed work flow engine module and a service dynamic selective agent module, wherein the client end interface module supplies interactive interfaces based on Web pages for users, the distributed work flow engine module processes various requests from the client end interface module, takes charge of executing work flow work, and dispatches sub tasks on physical services to execute according to flow processes, the dynamic service selective agent module belongs to the physical service of the same virtual service, and selects the physical service with optimum service quality to execute work. The distributed work flow management system supports virtual service as atom services to participate in service composite, selects physical service with optimal service quality to execute work, and supports WS / WSRF service, dynamic service selection based on QoS achieves the optimization of service dynamic selection, and operational dynamic load balance is achieved through adopting the distributed work flow engine.

Description

technical field [0001] The invention belongs to the field of computer applications, and in particular relates to a service-oriented distributed workflow management system. Background technique [0002] Currently, in Service Oriented Architecture (Service Oriented Architecture, SOA), Web services and WSRF services based on standard protocols (XML, HTTP, WSDL and SOAP, etc.) are at the core. Neutrality, at the same time, legacy applications and systems can also be packaged as services and continue to be used, which has won the general welcome and support of major software suppliers and enterprise organizations. [0003] Open standards and loosely coupled service components provide standard interfaces and service functions to encapsulate the underlying heterogeneous physical resources and software environments. They are service entities that can be dynamically discovered and combined and integrated. Therefore, in addition to being able to access each other, service-based softw...

AI Technical Summary

Problems solved by technology

First of all, the workflow management systems mentioned above are all centralized single engines. When the load tasks become heavy and cannot be balanced, the performance becomes a big bottleneck; at the same time, there may be a single point of failure. When the workflow engine After the crash, the whole system will be paralyzed

Secondly, the above system only supports specific physical services to act as atomic services to participate in service composition with workflow logic, without the concept of service virtualization, so it cannot effectively make optimal selections between physical services based on service quality

In addition, the above systems only support standard Web services, but do not support stateful WSRF services, which greatly reduces service-oriented support capabilities

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