Using integral function in graphite module with multiple metrics

Hi,

I’m trying to draw an integral of daily data volumes with the graphite module of icingaweb2.

Graphite is capable of doing it with the render api and using a wildcard for the metrics.

Is there a way to define such a scenario with the templates of graphite module. If I define a macro in metrics_filters (like

$host_name_template$.perfdata.$perfdata_label$.value

I get multiple graphs with an integral in each of them. But I would like to get an combined integral of all metrics in one graph, like this (integral is on right axis):

grafik

I found an pull-request in github, which would add the functionality I need:

Is there any chance to get this into the next release?