Class: Sidekiq::Manager

Inherits:
Object
  • Object
show all
Includes:
Actor, Util
Defined in:
lib/sidekiq/manager.rb

Overview

The main router in the system. This manages the processor state and accepts messages from Redis to be dispatched to an idle processor.

Constant Summary collapse

SPIN_TIME_FOR_GRACEFUL_SHUTDOWN =
1

Constants included from Util

Util::EXPIRY

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Actor

included

Methods included from Util

#fire_event, #hostname, #identity, #logger, #redis, #watchdog

Methods included from ExceptionHandler

#handle_exception

Constructor Details

#initialize(options = {}) ⇒ Manager

Returns a new instance of Manager.


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# File 'lib/sidekiq/manager.rb', line 25

def initialize(options={})
  logger.debug { options.inspect }
  @options = options
  @count = options[:concurrency] || 25
  @done_callback = nil

  @in_progress = {}
  @threads = {}
  @done = false
  @busy = []
  @ready = @count.times.map do
    p = Processor.new_link(current_actor)
    p.proxy_id = p.object_id
    p
  end
end

Instance Attribute Details

#busyObject (readonly)

Returns the value of attribute busy


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# File 'lib/sidekiq/manager.rb', line 20

def busy
  @busy
end

#fetcherObject

Returns the value of attribute fetcher


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# File 'lib/sidekiq/manager.rb', line 21

def fetcher
  @fetcher
end

#readyObject (readonly)

Returns the value of attribute ready


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# File 'lib/sidekiq/manager.rb', line 19

def ready
  @ready
end

Instance Method Details

#assign(work) ⇒ Object


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# File 'lib/sidekiq/manager.rb', line 110

def assign(work)
  watchdog("Manager#assign died") do
    if stopped?
      # Race condition between Manager#stop if Fetcher
      # is blocked on redis and gets a message after
      # all the ready Processors have been stopped.
      # Push the message back to redis.
      work.requeue
    else
      processor = @ready.pop
      @in_progress[processor.object_id] = work
      @busy << processor
      processor.async.process(work)
    end
  end
end

#clean_up_for_graceful_shutdownObject


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# File 'lib/sidekiq/manager.rb', line 59

def clean_up_for_graceful_shutdown
  if @busy.empty?
    shutdown
    return true
  end

  after(SPIN_TIME_FOR_GRACEFUL_SHUTDOWN) { clean_up_for_graceful_shutdown }
  false
end

#heartbeat(key, data, json) ⇒ Object


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# File 'lib/sidekiq/manager.rb', line 135

def heartbeat(key, data, json)
  proctitle = ['sidekiq', Sidekiq::VERSION]
  proctitle << data['tag'] unless data['tag'].empty?
  proctitle << "[#{@busy.size} of #{data['concurrency']} busy]"
  proctitle << 'stopping' if stopped?
  $0 = proctitle.join(' ')

  (key, json)
  after(5) do
    heartbeat(key, data, json)
  end
end

#processor_died(processor, reason) ⇒ Object


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# File 'lib/sidekiq/manager.rb', line 93

def processor_died(processor, reason)
  watchdog("Manager#processor_died died") do
    @in_progress.delete(processor.object_id)
    @threads.delete(processor.object_id)
    @busy.delete(processor)

    unless stopped?
      p = Processor.new_link(current_actor)
      p.proxy_id = p.object_id
      @ready << p
      dispatch
    else
      shutdown if @busy.empty?
    end
  end
end

#processor_done(processor) ⇒ Object


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# File 'lib/sidekiq/manager.rb', line 77

def processor_done(processor)
  watchdog('Manager#processor_done died') do
    @done_callback.call(processor) if @done_callback
    @in_progress.delete(processor.object_id)
    @threads.delete(processor.object_id)
    @busy.delete(processor)
    if stopped?
      processor.terminate if processor.alive?
      shutdown if @busy.empty?
    else
      @ready << processor if processor.alive?
    end
    dispatch
  end
end

#real_thread(proxy_id, thr) ⇒ Object

A hack worthy of Rube Goldberg. We need to be able to hard stop a working thread. But there's no way for us to get handle to the underlying thread performing work for a processor so we have it call us and tell us.


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# File 'lib/sidekiq/manager.rb', line 131

def real_thread(proxy_id, thr)
  @threads[proxy_id] = thr
end

#startObject


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# File 'lib/sidekiq/manager.rb', line 69

def start
  @ready.each { dispatch }
end

#stop(options = {}) ⇒ Object


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# File 'lib/sidekiq/manager.rb', line 42

def stop(options={})
  watchdog('Manager#stop died') do
    should_shutdown = options[:shutdown]
    timeout = options[:timeout]

    @done = true

    logger.info { "Shutting down #{@ready.size} quiet workers" }
    @ready.each { |x| x.terminate if x.alive? }
    @ready.clear

    return if clean_up_for_graceful_shutdown

    hard_shutdown_in timeout if should_shutdown
  end
end

#when_done(&blk) ⇒ Object


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# File 'lib/sidekiq/manager.rb', line 73

def when_done(&blk)
  @done_callback = blk
end