[jira] [Updated] (CASSANDRA-13457) Diag. Events: Add base classes

["Stefan Podkowinski (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-13457?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefan Podkowinski updated CASSANDRA-13457:
-------------------------------------------
    Status: Patch Available  (was: In Progress)

Please see [WIP branch|https://github.com/apache/cassandra/compare/trunk...spodkowinski:WIP-13457] for proposed changes. 

* DiagnosticEvent base class and DiagnosticEventService for subscribing and publishing events
* Bootstrap and hinted handoff related events raised at various point in the source
* Implements general pattern how events should be emitted
* diagnostic_events_enabled killswitch in cassandra.yaml

Most of the code is trivial, maybe except for the DiagnosticEventService itself. 

> Diag. Events: Add base classes
> ------------------------------
>
>                 Key: CASSANDRA-13457
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13457
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Core, Observability
>            Reporter: Stefan Podkowinski
>            Assignee: Stefan Podkowinski
>
> Base ticket for adding classes that will allow you to implement and subscribe to events.



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