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https://issues.apache.org/jira/browse/ARIES-12?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alan Cabrera updated ARIES-12:
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Description:
The spec states that the events must be delivered synchronously. "These events
are send synchronously with their cause. That is, all listeners must be
notified before the Blueprint Container continues to the next step." So we must
not use a thread pool to deliver.
It also states "Blueprint Listener services that throw Exceptions or do not
return in a reasonable time as judged by the Blueprint extender implementation,
should be logged, if possible, and further ignored." We don't do this.
was:Section 121.12 of the blueprint specification has a requirement that
blueprint events be delivered to BlueprintListener.blueprintEvent() methods.
However, the implementation of the event dispatcher submits the callbacks for
each event to an executor for processing, leading to race conditions where
events can be delivered out of order. These events really should be placed on
a queue and all callbacks completely processed in order.
> BlueprintListener events are not delivered synchronously and bad/tardy
> listeners are not ignored
> ------------------------------------------------------------------------------------------------
>
> Key: ARIES-12
> URL: https://issues.apache.org/jira/browse/ARIES-12
> Project: Aries
> Issue Type: Bug
> Components: Blueprint
> Reporter: Rick McGuire
> Assignee: Alan Cabrera
>
> The spec states that the events must be delivered synchronously. "These
> events are send synchronously with their cause. That is, all listeners must
> be notified before the Blueprint Container continues to the next step." So we
> must not use a thread pool to deliver.
> It also states "Blueprint Listener services that throw Exceptions or do not
> return in a reasonable time as judged by the Blueprint extender
> implementation, should be logged, if possible, and further ignored." We don't
> do this.
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