Event driven dynamic service combining method under network environment
A dynamic service, event-driven technology, applied in the field of computer networks, can solve problems such as poor fault tolerance, inability to adjust service processes, and inability to use the best services, to achieve the effect of achieving management and satisfying high dynamics
Inactive Publication Date: 2009-05-13
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Problems solved by technology
These interoperability behaviors need to be set before running and cannot be changed at run time
This has caused three problems: (1) poor fault tolerance: once the pre-bound service is unavailable, the business cannot continue to run; (2) due to the pre-binding strategy, the best service cannot be used; (3) when the business occurs When changing, the original service process cannot be adjusted at runtime
Method used
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example E1
[0049] (4) The event listener of server 1 (requester) triggers an instance E1 ( Figure 2B );
[0050] (5) After the dynamic service combination engine of server 1 receives E1, it connects to the subscriber server to search for the service subscribed to the event, and finds "check restaurant service 1" and "check restaurant service 2" ( Figure 2B );
[0051] (6) The dynamic service composition engine of server 1 connects to server 3 and server 4 respectively, and server 3 and server 4 return respectively the parameter mapping of "check restaurant service 1" and "check restaurant service 2" with E1 ( Figure 2C );
[0052] (7) The dynamic service composition engine of server 1 generates two service nodes and the data mapping relationship with "check venue service" according to the parameter mapping relationship between "restaurant search service 1" and "restaurant search service 2" and E1, and combines the two Add it side by side to the back of "Venue Check Service" to gene...
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The method includes following steps: event template creation step creates event template on the subscription server; in event subscription step, service provider subscribes interested events based on service resources (SR); in audiomonitor deployment and configuration step, request party, and service provider deploys and configures event monitor; in event sending step, event monitor at request party sends monitored event to dynamic service combination engine (DSCE); in SR searching step, DSCE online subscribes server, and searches SR based on events occurred in event sending step; in service combination step, DSCE processes events monitored in event sending step based on SR found in SR searching step in order to add the found services into service flow; in step of handing over control power, DSCE hands over control power of service flow to the service flow engine so as to accomplish event driving dynamic service combination under grid condition.
Description
technical field [0001] The invention relates to the technical field of computer networks, in particular to an event-driven dynamic service composition method in a grid environment. Background technique [0002] Grid, as a computing and data management infrastructure, can provide information support for many fields such as business activities, government activities, scientific research, and mass entertainment. In some literatures, the problem to be solved by the grid is defined as "flexible and secure collaborative resource sharing in the dynamically formed aggregate of individuals, organizations and resources". This view emphasizes the importance of information and collaboration. [0003] With the development of Web technology and related standards, grid technology has developed into the third stage, and the focus has shifted to distributed global collaboration, that is, service-oriented methods and information layer issues, and more emphasis on application-driven loosely c...
Claims
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IPC IPC(8): H04L12/24H04L29/06
Inventor 李厚福梁英韩燕波
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI