Module: Datadog::Runtime::Cgroup

Defined in:
lib/ddtrace/runtime/cgroup.rb

Overview

For control groups

Defined Under Namespace

Classes: Descriptor

Constant Summary collapse

LINE_REGEX = 
/^(\d+):([^:]*):(.+)$/

Class Method Summary collapse

Class Method Details

.descriptors(process = 'self') ⇒ Object 



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# File 'lib/ddtrace/runtime/cgroup.rb', line 18

def descriptors(process = 'self')
  [].tap do |descriptors|
    begin
      filepath = "/proc/#{process}/cgroup"

      if File.exist?(filepath)
        File.open("/proc/#{process}/cgroup").each do |line|
          line = line.strip
          descriptors << parse(line) unless line.empty?
        end
      end
    rescue StandardError => e
      Datadog::Tracer.log.error("Error while parsing cgroup. Cause: #{e.message} Location: #{e.backtrace.first}")
    end
  end
end

.parse(line) ⇒ Object 



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# File 'lib/ddtrace/runtime/cgroup.rb', line 35

def parse(line)
  id, groups, path = line.scan(LINE_REGEX).first

  Descriptor.new(id, groups, path).tap do |descriptor|
    descriptor.controllers = groups.split(',') unless groups.nil?
  end
end