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https://issues.apache.org/jira/browse/METRON-981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16035963#comment-16035963
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Otto Fowler commented on METRON-981:
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The management UI will use this call to check the slots
> Management UI allows you to activate parsers even if you don't have enough
> storm slots
> --------------------------------------------------------------------------------------
>
> Key: METRON-981
> URL: https://issues.apache.org/jira/browse/METRON-981
> Project: Metron
> Issue Type: Bug
> Reporter: Otto Fowler
>
> The Management UI should inform the user that there are no free slots in
> storm and fail when trying to activate a parser, rather than let the parser
> fail silently and make the user go on a hunt for the reason it is failing.
> To achieve this, the rest-api should provide methods to query the number of
> slots used and available in storm as well.
> StormStatusServiceImpl already calls the storm ui rest endpoints and should
> be extended to call:
> {code}
> /api/v1/supervisor/summary (GET)
> returns all supervisors summary
> Response Fields:
> Field Value Description
> id String Supervisor's id
> host String Supervisor's host name
> uptime String Shows how long the supervisor is running
> slotsTotal Integer Total number of available worker slots for this
> supervisor
> slotsUsed Integer Number of worker slots used on this supervisor
> Sample Response:
> json { "supervisors": [ { "id": "0b879808-2a26-442b-8f7d-23101e0c3696",
> "host": "10.11.1.7", "uptime": "5m 58s", "slotsTotal": 4, "slotsUsed": 3 } ] }
> {code}
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