[METRON-981] Management UI allows you to activate parsers even if you don't have enough storm slots

• Type: Bug
• Status: To Do
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Otto Fowler
• Created: 02/Jun/17 17:36
• Updated: 03/Jun/17 12:57

Description

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:

/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 } ] }

Issue Links

• depends upon: METRON-982 REST STORM Support for supervisor summary