Class: Delayed::Pool

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args = ARGV) ⇒ Pool

Returns a new instance of Pool.



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

def initialize(args = ARGV)
  @args = args
  @workers = {}
  @config = { :workers => [] }
  @options = {
    :config_file => Settings.default_worker_config_name,
    :pid_folder => Settings.expand_rails_path("tmp/pids"),
    :tail_logs => true, # only in FG mode
  }
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/delayed/pool.rb', line 11

def options
  @options
end

#workers ⇒ Object (readonly)

Returns the value of attribute workers.



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# File 'lib/delayed/pool.rb', line 11

def workers
  @workers
end

Instance Method Details

#parse_cli_options! ⇒ Object 



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# File 'lib/delayed/pool.rb', line 65

def parse_cli_options!
  op = OptionParser.new do |opts|
    opts.banner = "Usage #{$0} <command> <options>"
    opts.separator %{\nWhere <command> is one of:
start      start the jobs daemon
stop       stop the jobs daemon
run        start and run in the foreground
restart    stop and then start the jobs daemon
status     show daemon status
}

    opts.separator "\n<options>"
    opts.on("-c", "--config [CONFIG_PATH]", "Use alternate config file (default #{options[:config_file]})") { |c| options[:config_file] = c }
    opts.on("-p", "--pid", "Use alternate folder for PID files (default #{options[:pid_folder]})") { |p| options[:pid_folder] = p }
    opts.on("--no-tail", "Don't tail the logs (only affects non-daemon mode)") { options[:tail_logs] = false }
    opts.on("--with-prejudice", "When stopping, interrupt jobs in progress, instead of letting them drain") { options[:kill] ||= true }
    opts.on("--with-extreme-prejudice", "When stopping, immediately kill jobs in progress, instead of letting them drain") { options[:kill] = 9 }
    opts.on_tail("-h", "--help", "Show this message") { puts opts; exit }
  end
  op.parse!(@args)
end

#run ⇒ Object 



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# File 'lib/delayed/pool.rb', line 24

def run
  parse_cli_options!

  read_config(options[:config_file])

  command = @args.shift
  case command
  when 'start'
    exit 1 if status(print: :alive) == :running
    daemonize
    start
  when 'stop'
    stop(kill: options[:kill])
  when 'run'
    start
  when 'status'
    if status
      exit 0
    else
      exit 1
    end
  when 'restart'
    pid = self.pid
    alive = status(pid: pid, print: false)
    if alive == :running || (options[:kill] && alive == :draining)
      stop(pid: pid, kill: options[:kill])
      if options[:kill]
        sleep(0.5) while status(pid: pid, print: false)
      else
        sleep(0.5) while status(pid: pid, print: false) == :running
      end
    end
    daemonize
    start
  when nil
    puts op
  else
    raise("Unknown command: #{command.inspect}")
  end
end