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https://issues.apache.org/jira/browse/KNOX-2160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on KNOX-2160 started by Sandor Molnar.
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> Process refreshable-service-parameters.xml in Knox
> --------------------------------------------------
>
> Key: KNOX-2160
> URL: https://issues.apache.org/jira/browse/KNOX-2160
> Project: Apache Knox
> Issue Type: New Feature
> Components: Server
> Affects Versions: 1.1.0, 1.2.0, 1.3.0
> Reporter: Sandor Molnar
> Assignee: Sandor Molnar
> Priority: Major
> Fix For: 1.4.0
>
>
> It'd be beneficial if there was a way to update service parameters in a
> descriptor without using the Admin API/UI. The preferred approach is similar
> to {{gateway-reloadable.xml}} handling. I'd add 2 new configurations:
> - {{refreshable.service.parameters.folder}} - optional configuration to
> indicate if Knox should monitor the given folder for service parameter
> changes. If it's {{null}} -> no monitoring is enabled.
> - {{refreshable.service.parameters.folder.monitor.interval}} - indicates the
> time period Knox checks if any parameter changes were made; defaults to 60
> seconds. This is relevant only if {{refreshable.service.parameters.folder}}
> is {{not null}}.
> A new monitor would be implemented (triggered only if monitoring is enabled)
> as follows:
> # checks {{refreshable-service-parameters.xml}} within the configured
> {{refreshable.service.parameters.folder}}. The relevant configuration's name
> is {{refreshable.service.parameters}}.
> # if there is new content (based on file timestamp) -> parse the file and
> build a new parameter list -> trigger topology redeployment with the new
> parameter list by rewriting the appropriate descriptor file.
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