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Showing content from http://ruby-concurrency.github.io/concurrent-ruby/master/Concurrent/Actor/Behaviour/Pausing.html below:

Class: Concurrent::Actor::Behaviour::Pausing — Concurrent Ruby

Inherits:

Abstract

• Object
• Abstract
• Concurrent::Actor::Behaviour::Pausing

show all

Defined in:

lib/concurrent-ruby-edge/concurrent/actor/behaviour/pausing.rb

TODO missing example

Allows to pause actors on errors. When paused all arriving messages are collected and processed after the actor is resumed or reset. Resume will simply continue with next message. Reset also reinitialized context.

• #initialize(core, subsequent, core_options) ⇒ Pausing constructor

  A new instance of Pausing.

• #on_envelope(envelope) ⇒ undocumented
• #on_event(public, event) ⇒ undocumented
• #pause!(error = nil) ⇒ undocumented
• #paused? ⇒ Boolean
• #reset! ⇒ undocumented
• #restart! ⇒ undocumented
• #resume! ⇒ undocumented

Returns a new instance of Pausing.

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# File 'lib/concurrent-ruby-edge/concurrent/actor/behaviour/pausing.rb', line 13

def initialize(core, subsequent, core_options)
  super core, subsequent, core_options
  @paused   = false
  @deferred = []
end

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# File 'lib/concurrent-ruby-edge/concurrent/actor/behaviour/pausing.rb', line 23

def on_envelope(envelope)
  case envelope.message
  when :pause!
    pause!
  when :paused?
    paused?
  when :resume!
    resume!
  when :reset!
    reset!
  when :restart!
    restart!
  else
    if paused?
      @deferred << envelope
      MESSAGE_PROCESSED
    else
      pass envelope
    end
  end
end

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# File 'lib/concurrent-ruby-edge/concurrent/actor/behaviour/pausing.rb', line 74

def on_event(public, event)
  event_name, _ = event
  reject_deferred if event_name == :terminated
  super public, event
end

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# File 'lib/concurrent-ruby-edge/concurrent/actor/behaviour/pausing.rb', line 45

def pause!(error = nil)
  do_pause
  broadcast true, error || :paused
  true
end

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# File 'lib/concurrent-ruby-edge/concurrent/actor/behaviour/pausing.rb', line 19

def paused?
  @paused
end

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# File 'lib/concurrent-ruby-edge/concurrent/actor/behaviour/pausing.rb', line 58

def reset!
  return false unless paused?
  broadcast(false, :resetting)
  do_reset
  broadcast(true, :reset)
  true
end

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# File 'lib/concurrent-ruby-edge/concurrent/actor/behaviour/pausing.rb', line 66

def restart!
  return false unless paused?
  broadcast(false, :restarting)
  do_restart
  broadcast(true, :restarted)
  true
end

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# File 'lib/concurrent-ruby-edge/concurrent/actor/behaviour/pausing.rb', line 51

def resume!
  return false unless paused?
  do_resume
  broadcast(true, :resumed)
  true
end

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