collect usage with yabeda-statsd

[mbajur]

Hello!
I was trying to use a collect block to gather memory usage of my app processes but can't really make it work. My config (rails initializer) look as follows:

Yabeda.configure do
  group :app do
    gauge :process_rss
  end

  collect do
    app.process_rss.set(
      { process_name: $PROGRAM_NAME },
      `ps -o rss= -p #{Process.pid}`.to_i
    )
  end
end

Yabeda::Statsd.start

But no gauge is being sent to statsd deamon. However, running

Yabeda.app.process_rss.set({ process_name: $PROGRAM_NAME }, `ps -o rss= -p #{Process.pid}`.to_i)

manually works as expected and sends the gauge metric so it seems to be something wrong about the collect block itself. Should it be working out of the box or do i need to take any extra steps to enable it?

My stack

• Rails 6.0.3.2
• Ruby 2.7.0
• Yabeda 0.8.0
• yabeda-rails 0.7.1
• yabeda-statsd 0.1.2

Thanks in advance for any clues!

[Envek]

I can see that in yabeda-statsd collection of metrics defined in collect blocks is done in separate start_exporter method here:

https://github.com/asusikov/yabeda-statsd/blob/c248f138f7229a50f570ca5a07394fb079781138/lib/yabeda/statsd.rb#L31-L39

Unfortunately this method doesn't seem to be called from anywhere, so I suppose that you have to call it explicitly right after start:

Yabeda::Statsd.start
Yabeda::Statsd.start_exporter

Please open issue in the yabeda-statsd repo as it is a third-party adapter I don't have control over.

[mbajur]

That's exactly a piece of information i was missing. Thank you! It works now :)