module Datadog::Core::Environment::Cgroup

Reads information from Linux cgroups. This information is used to extract information about the current Linux container identity. @see man7.org/linux/man-pages/man7/cgroups.7.html

Constants

Descriptor
LINE_REGEX

Public Instance Methods

descriptors(process = 'self') click to toggle source
# File lib/datadog/core/environment/cgroup.rb, line 25
def descriptors(process = 'self')
  [].tap do |descriptors|
    begin
      filepath = "/proc/#{process}/cgroup"

      if File.exist?(filepath)
        File.foreach("/proc/#{process}/cgroup") do |line|
          line = line.strip
          descriptors << parse(line) unless line.empty?
        end
      end
    rescue StandardError => e
      Datadog.logger.error("Error while parsing cgroup. Cause: #{e.message} Location: #{Array(e.backtrace).first}")
    end
  end
end
parse(line) click to toggle source
# File lib/datadog/core/environment/cgroup.rb, line 42
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