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https://issues.apache.org/jira/browse/STRATOS-1489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reka Thirunavukkarasu reassigned STRATOS-1489:
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Assignee: Reka Thirunavukkarasu
> Faulty behavior in application monitor creation logic
> -----------------------------------------------------
>
> Key: STRATOS-1489
> URL: https://issues.apache.org/jira/browse/STRATOS-1489
> Project: Stratos
> Issue Type: Bug
> Affects Versions: 4.1.0
> Reporter: Akila
> Assignee: Reka Thirunavukkarasu
>
> When a user sign up for an application, AS makes a service call to CC and
> executed "createApplicationClusters" method which will publish
> ApplicationClustersCreated event. There is a separate event listener for this
> event in AS side which will start cluster monitors upon receiving this event.
> But in this listener AS first checks whether this corresponding application's
> status is set to DEPLOYED state. If not it will wait for 5 seconds and print
> following warning;
> WARN
> {org.apache.stratos.autoscaler.event.receiver.topology.AutoscalerTopologyEventReceiver}
> - Application monitor creation is not triggered on application clusters
> created event even after 5 retries [application-id] xxxxxx-xxxxx. Possible
> cause is either application context is null or application status didn't
> become Deployed yet.
> In the code [1] there is no way to recover if the application doesn't get
> updated to DEPLOYED status within the given 5 seconds timeout window. There
> is a comment in the code which says that the reason for not throwing an error
> is because this is not the only place where it starts monitors. But the only
> other place I could find is upon receiving CompleteTopologyEvent. But that
> event is processed only at the very first time.
> Therefore, there is no way to recover from this error state, and it does not
> throw an error either. This logic needs to be improved.
> [1]
> https://github.com/apache/stratos/blob/master/components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/event/receiver/topology/AutoscalerTopologyEventReceiver.java#L169
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