I have searched endlessly online and cannot seem to find an answer to my question.

From what I have found, it is possible to have shinken send performance data to graphite. I was wondering whether the reverse was possible?

I use graphite to monitor the amount of free space on a hardware node. I want to know whether it is possible to use a check for this that notifies me when there are no more free spaces.

So shinken actually has to receive information from graphs and create a warning when the free place percentage is lower than 5%. Would this be possible and if so which check will I have to use for this?