System for web service QoS observation and dynamic selection
First Claim
1. A system for observing of Web services Quality of Service (QoS), comprising:
- a service criteria generator which computes QoS criteria values of services by subscribing user feedback events and service execution events, based on a deployed observation model;
a QoS observation manager which allows users to define an observation model and deploy to the service criteria generator;
a service repository which provides persistent storage for QoS criteria values;
an evaluation manager which allows users to specify selection preferences and select services based on QoS ranking; and
a service invocation manager which invokes Web services, collects user'"'"'s feedback on usage of Web services and publishes events according to the QoS of Web services,wherein said service criteria generator comprises;
an observation model loader which loads the observation model specification into the system;
an event filter which subscribes events from an event bus based on event specification repository and correlates primitive events to composite events and notifies the criteria evaluator;
a criteria evaluator that evaluates evaluation policies to check which dependence expression needs to be computed in order to create or update a value of criteria for a Web service;
a dependence expression specification repository that stores dependence expressions, score functions and evaluation policies for each criteria; and
an event specification repository that stores event specification that is subscribed by the criteria generator.
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Accused Products
Abstract
A system and method permits a user to observe the Quality of Service (QoS) of Web services and allows dynamic selection based on the user'"'"'s preference. The system is built on QoS observation meta-model and comprises a QoS observation manager, service criteria generator, service repository, evaluation manager and service invocation manager. The QoS observation manager allows users to define observation model and deploy to the service criteria generator. The service criteria generator computes the QoS criteria values of services by subscribing events which include user feedback events and service execution events, based on deployed observation model. The service repository provides the persistence storage for QoS criteria value. The evaluation manager allows users to specify selection preferences and select services based on QoS ranking. The service invocation manger invokes Web services and publishes events according to the QoS of Web services. The system enables users to observe the QoS of Web service and select Web service based on QoS ranking that reflects the user'"'"'s selection preference.
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Citations
5 Claims
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1. A system for observing of Web services Quality of Service (QoS), comprising:
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a service criteria generator which computes QoS criteria values of services by subscribing user feedback events and service execution events, based on a deployed observation model; a QoS observation manager which allows users to define an observation model and deploy to the service criteria generator; a service repository which provides persistent storage for QoS criteria values; an evaluation manager which allows users to specify selection preferences and select services based on QoS ranking; and a service invocation manager which invokes Web services, collects user'"'"'s feedback on usage of Web services and publishes events according to the QoS of Web services, wherein said service criteria generator comprises; an observation model loader which loads the observation model specification into the system; an event filter which subscribes events from an event bus based on event specification repository and correlates primitive events to composite events and notifies the criteria evaluator; a criteria evaluator that evaluates evaluation policies to check which dependence expression needs to be computed in order to create or update a value of criteria for a Web service; a dependence expression specification repository that stores dependence expressions, score functions and evaluation policies for each criteria; and an event specification repository that stores event specification that is subscribed by the criteria generator. - View Dependent Claims (2, 3, 4, 5)
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Specification