ad-hockery: /ad·hok'@r·ee/, n.
Gratuitous assumptions... which lead to the appearance of semi-intelligent behavior but are in fact entirely arbitrary. Jargon File

Grails Spring Events Plugin

Following on from my previous post I’ve developed a Grails plugin that packages the asynchronous events behaviour up and adds some extra useful functionality.

In addition to the asynchronous event processing the plugin gives you:

  • A publishEvent method attached to all domain classes, controllers and services.

  • A Hibernate session bound to the listener thread for the duration of the notification so that listeners can access lazy-loaded properties, etc.

  • The ability to have a "retry policy" for certain types of failed notifications on individual listeners. This is particularly useful for listeners that do things like invoking external web-services that may be periodically unavailable.

To install the plugin just use:

grails install-plugin spring-events

The code and some more detailed documentation is on GitHub. I’ll be migrating the docs to the plugin’s page on soon.

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