xerions / metricman Goto Github PK

Can you please add a README describing what metric man is and how it work.
Please add also the dependencies. As far I know metric man depends on exometer
which in turn could pull in snap which required mnesia, So a quite long dependency
tree behind metricman ?

For example this module:

defmodule Mapping do
  use Metricman.Subscription

  @reporter expose: [:exometer_report_influxdb]

  scope [:sessions], @reporter do
    map [:total],       [:sessions, :total]
    map [:access_class, '$access_class'], [:sessions, :access_class '$access_class']
  end
end

Will generate get/2 function which works like:

> Mapping.get [:sessions, :access_class, :online], :counter
{:ok, {[:sessions, :online, :access_class], [:value], [expose: [:exometer_report_influxdb]]}}

but it is not was expected. The correct result should looks like:

{:ok, {[:sessions, :access_class, :online], [:value], [expose: [:exometer_report_influxdb]]}}

It happens because we have names clashing: :access_class and '$access_class'.
If we rename '$access_class' to '$class' all works correct.

For configuring exometer, setup and so on

https://github.com/ferd/recon

I added the following to my predefined list in the exometer_config:

{[:erlang, :beam, :uptime], {:function, Metricman, :update_uptime, [], :proplist, [:value]}, []}

and I subscribe to the same in my subscribers list as follows:

{:exometer_report_influxdb, [:erlang, :beam, :uptime], [:value], poll_interval, []}

but I keep getting the following lager warning,

11:01:28.968 [warning] Metric([erlang,beam,uptime]) Datapoint([value]) not found. Will not try again

In effect the metric is not pushed to InfluxDB. Other metric from the config.exs work fine.