Fix Containers dashboard heatmaps

app/models/metric/helper.rb

@@ -198,4 +198,12 @@ def self.get_time_interval(obj, timestamp)
 
     start_time..timestamp
   end
+
+  def self.latest_metrics(resource_type, since_timestamp, resource_ids = nil)
+    metrics = Metric.where(:resource_type => resource_type)
+    metrics = metrics.where(:resource_id => resource_ids) if resource_ids
+    metrics = metrics.order(:resource_id, :timestamp => :desc)
+    metrics = metrics.where('timestamp > ?', since_timestamp)
+    metrics.select('DISTINCT ON (metrics.resource_id) metrics.*')
+  end
 end

spec/factories/metric.rb

@@ -12,4 +12,9 @@
     capture_interval_name "realtime"
     resource_type         "Host"
   end
+
+  factory :metric_container_node_rt, :parent => :metric, :class => :Metric do
+    capture_interval_name "realtime"
+    resource_type         "ContainerNode"
+  end
 end