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https://issues.apache.org/jira/browse/EAGLE-556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15567493#comment-15567493
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ASF GitHub Bot commented on EAGLE-556:
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Github user haoch commented on the issue:
https://github.com/apache/incubator-eagle/pull/493
UT passed successfully.
> Install/Update Alert Topology Metadata when start alert engine
> --------------------------------------------------------------
>
> Key: EAGLE-556
> URL: https://issues.apache.org/jira/browse/EAGLE-556
> Project: Eagle
> Issue Type: Improvement
> Affects Versions: v0.5.0
> Reporter: Hao Chen
> Assignee: Hao Chen
> Fix For: v0.5.0
>
>
> Currently alert engine requires additional metadata like TopologyMeta, which
> in fact could be automatically generated during starting alert engine.
> *Changes*
> * Add "ApplicationListener" in ApplicationProvider to support extensible
> application lifecycle management callback listener
> * Implement AlertUnitTopologyAppListener to add topology metadata when
> topology is running and remove topology metadata when topology is stopped
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