dir = Path[ENV.fetch("PSI_DIR", "/proc/pressure")]
time = Time.utc.to_s("%s%9N")

Dir.children(dir).each do |resource|
  File.read_lines(dir/resource).each do |line|
    parts = line.split
    type = parts[0]
    metrics = parts[1..-1].map{ |part| part.split('=') }.to_h
    puts %(pressure_stall,resource=#{resource},type=#{type} avg10=#{metrics["avg10"]},avg60=#{metrics["avg60"]},avg300=#{metrics["avg300"]},total=#{metrics["total"]} #{time})
  end
end