Ceilometer/blueprints/alarm-audit-api-group-by

The user stories

• User wants health chart of nova instances (health is represented by number of alerts)

- Each instance is represented by number of alerts in given time period.

- Instances can be grouped by metadate resouce_id, meter_names and other alarm attributes (all needs to be saved in Alarm event, so the change of Alarm won't affect it).

- Instanced can be queried by regular ceilometer query, also by a state transition (user is interested only in transitions to 'alarm' states)

Result will be something like

 [ {
    'resource_id': 'x', 
    'meter_name':' y', 
    'count' => 'z',      
    'timestamp'...
    }
    , ... ]

- it was grouped by resource_id an meter_name, but I could group by only by resource_id

• User wants to display a health of multiple instances in time line

Same as 1. but it would be grouped by time ( limit )

Result would be something like this

[[ {
    'resource_id': 'x', 
    'meter_name':' y', 
    'count' => 1, 
    'timestamp'...
   }, 
   {'resource_id': 'x', 
    'meter_name':' y', 
    'count' => 2, 
    'timestamp'...
    }]
   ,
  [{
    'resource_id': 'x2', 
    'meter_name':' y', 
    'count' => 3, 
    'timestamp'...
   }, 
   {'resource_id': 'x2', 
    'meter_name':' y', 
    'count' => 4, 
    'timestamp'...
    }], ...]

• User wants to see health map of projects

Instead of resource ID in the query, there will be a project ID. For making this work also for Alarms defined for resource ID. Alarm for resource would have to always contain also a Project.

• User wants to be able to order the results by the all result attributes (especially count) and limit the results