Class: Sidekiq::Manager

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

Overview

The Manager is the central coordination point in Sidekiq, controlling the lifecycle of the Processors and feeding them jobs as necessary.

Tasks:

  1. start: Spin up Processors.

  2. processor_died: Handle job failure, throw away Processor, create new one.

  3. quiet: shutdown idle Processors.

  4. stop: hard stop the Processors by deadline.

Note that only the last task requires its own Thread since it has to monitor the shutdown process. The other tasks are performed by other threads.

Constant Summary collapse

PAUSE_TIME = 
$TESTING ? 0.1 : 0.5

Constants included from Util

Util::EXPIRY

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Util

#fire_event, #hostname, #identity, #logger, #process_nonce, #redis, #safe_thread, #want_a_hertz_donut?, #watchdog

Methods included from ExceptionHandler

#handle_exception

Constructor Details

#initialize(options = {}) ⇒ Manager

Returns a new instance of Manager.

Raises:

  • (ArgumentError) 


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# File 'lib/sidekiq/manager.rb', line 29

def initialize(options={})
  logger.debug { options.inspect }
  @options = options
  @count = options[:concurrency] || 25
  raise ArgumentError, "Concurrency of #{@count} is not supported" if @count < 1

  @done = false
  @workers = Set.new
  @count.times do
    @workers << Processor.new(self)
  end
  @plock = Mutex.new
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/sidekiq/manager.rb', line 27

def options
  @options
end

#workers ⇒ Object (readonly)

Returns the value of attribute workers.



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# File 'lib/sidekiq/manager.rb', line 26

def workers
  @workers
end

Instance Method Details

#processor_died(processor, reason) ⇒ Object 



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# File 'lib/sidekiq/manager.rb', line 88

def processor_died(processor, reason)
  @plock.synchronize do
    @workers.delete(processor)
    unless @done
      p = Processor.new(self)
      @workers << p
      p.start
    end
  end
end

#processor_stopped(processor) ⇒ Object 



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# File 'lib/sidekiq/manager.rb', line 82

def processor_stopped(processor)
  @plock.synchronize do
    @workers.delete(processor)
  end
end

#quiet ⇒ Object 



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# File 'lib/sidekiq/manager.rb', line 49

def quiet
  return if @done
  @done = true

  logger.info { "Terminating quiet workers" }
  @workers.each { |x| x.terminate }
  fire_event(:quiet, true)
end

#start ⇒ Object 



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# File 'lib/sidekiq/manager.rb', line 43

def start
  @workers.each do |x|
    x.start
  end
end

#stop(deadline) ⇒ Object 



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# File 'lib/sidekiq/manager.rb', line 60

def stop(deadline)
  quiet
  fire_event(:shutdown, true)

  # some of the shutdown events can be async,
  # we don't have any way to know when they're done but
  # give them a little time to take effect
  sleep PAUSE_TIME
  return if @workers.empty?

  logger.info { "Pausing to allow workers to finish..." }
  remaining = deadline - Time.now
  while remaining > PAUSE_TIME
    return if @workers.empty?
    sleep PAUSE_TIME
    remaining = deadline - Time.now
  end
  return if @workers.empty?

  hard_shutdown
end

#stopped? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sidekiq/manager.rb', line 99

def stopped?
  @done
end