Support descriptive names from JSON payload.

[tomprince]

collectd knows what the various fields in a metric are, and passes them in the JSON. the exporter should use this information.

For example collectd_processes_ps_cputime_0 is user and ..._1 is syst.

[octo]

Hi @tomprince, thanks for your input! Which version of the collectd Go library (collectd/go-collectd) are you currently using? Commit 292a66c should have implemented this feature:

if dsname := vl.DSName(index); dsname != "value" {
  name += "_" + dsname
}

[hasso]

I'm seeing the issue as well. I'm not using JSON though, but a binary network protocol.

[octo]

@hasso the binary network protocol does not include this information, therefore it's impossible to derive it from the traffic itself. We might be able to support for types.db files though.

[hasso]

That what I was afraid of. Thanks.

[octo]

FYI, collectd/go-collectd#17 implements the infrastructure required for this feature.