[Feature Request] Query Based Thresholds

[snctfd]

I am working with a Graphite data source being fed with Icinga monitoring data. Setting up Boom Table to show data from various perfdata metrics was a very smooth process, however as far as I can tell it seems like the threshold values have to be configured as specific values in the Grafana dashboard. This is of course a little bit rigid as the thresholds may not be the same for every host, may change in Icinga over time as values are tuned, etc. However, Icinga does export the threshold values to Graphite (perfdata.crit and perfdata.warn), so it should theoretically be possible to adjust the thresholds in Boom Table accordingly.

Perhaps a good way to go about this would be to add a Threshold Pattern section, much like the Pattern section where you match against queries to find values. This way, one could add a separate query (or use a wildcard) to fetch the warn/crit thresholds and then match against it to actually format the given cell.