Contents

# encoding: utf-8

module OneApm
  module Agent
    class Harvester

      attr_accessor :starting_pid

      # Inject target for after_fork call to avoid spawning thread in tests
      def initialize(events, after_forker = OneApm::Agent)
        # We intentionally don't set our pid as started at this point.
        # Startup routines must call mark_started when they consider us set!
        @starting_pid = nil
        @after_forker = after_forker

        if events
          events.subscribe(:start_transaction, &method(:on_transaction))
        end
      end

      def on_transaction(*_)
        return unless restart_in_children_enabled? && needs_restart? && harvest_thread_enabled?

        restart_harvest_thread
      end

      def mark_started(pid = Process.pid)
        @starting_pid = pid
      end

      def needs_restart?(pid = Process.pid)
        @starting_pid != pid
      end

      def restart_in_children_enabled?
        OneApm::Agent.config[:restart_thread_in_children]
      end

      def harvest_thread_enabled?
        !OneApm::Agent.config[:disable_harvest_thread]
      end

      def restart_harvest_thread
        @after_forker.after_fork(:force_reconnect => true)
      end
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
oneapm_rpm-1.1.2	lib/one_apm/agent/harvester.rb
oneapm_rpm-1.1.1	lib/one_apm/agent/harvester.rb
oneapm_rpm-1.1.0	lib/one_apm/agent/harvester.rb