Class: Delayed::Pool

Inherits:
Object
  • Object
show all
Includes:
Logging
Defined in:
lib/delayed/pool.rb

Constant Summary collapse

SIGNALS =
%i{INT TERM QUIT}
POOL_SLEEP_PERIOD =
5

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Logging

logger, #logger, #say

Constructor Details

#initialize(*args) ⇒ Pool

Returns a new instance of Pool.


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# File 'lib/delayed/pool.rb', line 15

def initialize(*args)
  if args.first.is_a?(Hash)
    @config = args.first
  else
    warn "Calling Delayed::Pool.new directly is deprecated. Use `Delayed::CLI.new.run()` instead."
  end
  @workers = {}
  @signal_queue = []
  @self_pipe = IO.pipe
end

Instance Attribute Details

#workersObject (readonly)

Returns the value of attribute workers


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# File 'lib/delayed/pool.rb', line 13

def workers
  @workers
end

Instance Method Details

#runObject


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# File 'lib/delayed/pool.rb', line 26

def run
  warn "Delayed::Pool#run is deprecated and will be removed. Use `Delayed::CLI.new.run()` instead."
  Delayed::CLI.new.run()
end

#startObject


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# File 'lib/delayed/pool.rb', line 31

def start
  say "Started job master", :info
  SIGNALS.each { |sig| trap(sig) { @signal_queue << sig; wake_up } }
  $0 = procname
  # fork to handle unlocking (to prevent polluting the parent with worker objects)
  unlock_pid = fork_with_reconnects do
    unlock_orphaned_jobs
  end
  Process.wait unlock_pid

  spawn_periodic_auditor
  spawn_abandoned_job_cleanup
  spawn_all_workers
  say "Workers spawned"
  join
  say "Shutting down"
  stop
  reap_all_children
rescue Exception => e
  say "Job master died with error: #{e.inspect}\n#{e.backtrace.join("\n")}", :fatal
  raise
end