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.