如何在开发中关闭PumaWorkerKiller

Question

I am using PumaWorkerKiller using this code in config/puma.rb :

  before_fork do
    PumaWorkerKiller.config do |config|
      config.ram           = 512 # mb
    end
    PumaWorkerKiller.start
  end

I want to stop it running on development mode. I tried to do this by putting a guard clause in like

if Rails.env.production?
  # PumaWorkerKiller code goes here
end

This works in development, but triggers an error in production, to the effect that Rails is an unknown constant. Presumably it is loading earlier in production than development.

How do I turn off PumaWorkerKiller in development but keep it working in production?

Answer 1

Puma should know what environment it is in without referencing rails.

Here's how my config/puma.rb looks, omitting unrelated lines:

environment ENV["RACK_ENV"] || "development"

before_fork do
  require "puma_worker_killer"

  PumaWorkerKiller.config do |config|
    config.ram           = (ENV["PUMA_WORKER_KILLER_RAM"] || 1024).to_i # mb
  end
  PumaWorkerKiller.start unless get(:environment) == "development"
end