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Extending WS-Notification with an Expressive Event Notification Broker (2008)
| Venue: | in 2008 IEEE International Conference on Web Services |
| Citations: | 3 - 2 self |
BibTeX
@INPROCEEDINGS{Labey08extendingws-notification,
author = {Sven De Labey and Eric Steegmans},
title = {Extending WS-Notification with an Expressive Event Notification Broker},
booktitle = {in 2008 IEEE International Conference on Web Services},
year = {2008}
}
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Abstract
Web service applications integrate explicit client-service interactions with notification-style programming. Such event-driven interactions are often called implicit invoca-tions because the notification message is not in itself a busi-ness interaction. Rather, it is used to implicitly trigger such interactions as a means for reacting to events. Web Services specifications such as WS-Notification have been developed in order to standardize the way notifications are sent, but they only support the most basic form of event notification. In this paper, we discuss the architecture and the imple-mentation of an expressive notification broker based on ex-tension mechanisms presented by the WS-Notification spec-ification. This broker improves the standard WSN bro-ker in three ways. First, it supports event correlation and hence allows for composite event detection. Second, it in-tegrates events and reactions into Event-Condition-Action (ECA) rules that can be registered directly at the broker. Third, it introduces event-driven lifecycle management for ECA rules, thus allowing to dynamically adapt these ECA rules to changing situations. 1.
Keyphrases
expressive event notification broker eca rule implicit invoca-tions notification message ex-tension mechanism busi-ness interaction composite event detection event-driven interaction event-driven lifecycle management web service application event notification explicit client-service interaction expressive notification broker web service specification hence allows basic form notification-style programming way notification standard wsn bro-ker ws-notification spec-ification event correlation
