Class: Delayed::Command

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Command

Returns a new instance of Command.



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# File 'lib/delayed/command.rb', line 9

def initialize(args)
  @files_to_reopen = []
  @options = {
    :quiet => true,
    :pid_dir => "#{RAILS_ROOT}/tmp/pids",
    :queues => ["default"]
  }
  
  @worker_count = 1
  @monitor = false
  
  opts = OptionParser.new do |opts|
    opts.banner = "Usage: #{File.basename($0)} [options] start|stop|restart|run"

    opts.on('-h', '--help', 'Show this message') do
      puts opts
      exit 1
    end
    opts.on('-e', '--environment=NAME', 'Specifies the environment to run this delayed jobs under (test/development/production).') do |e|
      STDERR.puts "The -e/--environment option has been deprecated and has no effect. Use RAILS_ENV and see http://github.com/collectiveidea/delayed_job/issues/#issue/7"
    end
    opts.on('--min-priority N', 'Minimum priority of jobs to run.') do |n|
      @options[:min_priority] = n
    end
    opts.on('--max-priority N', 'Maximum priority of jobs to run.') do |n|
      @options[:max_priority] = n
    end
    opts.on('-n', '--number_of_workers=workers', "Number of unique workers to spawn") do |worker_count|
      @worker_count = worker_count.to_i rescue 1
    end
    opts.on('--pid-dir=DIR', 'Specifies an alternate directory in which to store the process ids.') do |dir|
      @options[:pid_dir] = dir
    end
    opts.on('-i', '--identifier=n', 'A numeric identifier for the worker.') do |n|
      @options[:identifier] = n
    end
    opts.on('-m', '--monitor', 'Start monitor process.') do
      @monitor = true
    end
    opts.on('--sleep-delay N', "Amount of time to sleep when no jobs are found") do |n|
      @options[:sleep_delay] = n
    end
    opts.on('-p', '--prefix NAME', "String to be prefixed to worker process names") do |prefix|
      @options[:prefix] = prefix
    end
    opts.on('-q', '--queues x,y,z', Array, "Comma seperated list of queue names that the worker will process. Only the 'default' queue will be processed in the absence of this option") do |queues|
      @options[:queues] = queues
    end
  end
  @args = opts.parse!(args)
end

Instance Attribute Details

#worker_count ⇒ Object

Returns the value of attribute worker_count.



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# File 'lib/delayed/command.rb', line 7

def worker_count
  @worker_count
end

Instance Method Details

#daemonize ⇒ Object 



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# File 'lib/delayed/command.rb', line 61

def daemonize
  Delayed::Worker.backend.before_fork

  ObjectSpace.each_object(File) do |file|
    @files_to_reopen << file unless file.closed?
  end
  
  dir = @options[:pid_dir]
  Dir.mkdir(dir) unless File.exists?(dir)
  
  if @worker_count > 1 && @options[:identifier]
    raise ArgumentError, 'Cannot specify both --number-of-workers and --identifier'
  elsif @worker_count == 1 && @options[:identifier]
    process_name = "delayed_job.#{@options[:identifier]}"
    run_process(process_name, dir)
  else
    worker_count.times do |worker_index|
      process_name = worker_count == 1 ? "delayed_job" : "delayed_job.#{worker_index}"
      run_process(process_name, dir)
    end
  end
end

#run(worker_name = nil) ⇒ Object 



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# File 'lib/delayed/command.rb', line 91

def run(worker_name = nil)
  Dir.chdir(RAILS_ROOT)
  
  # Re-open file handles
  @files_to_reopen.each do |file|
    begin
      file.reopen file.path, "a+"
      file.sync = true
    rescue ::Exception
    end
  end
  
  Delayed::Worker.logger = Logger.new(File.join(RAILS_ROOT, 'log', 'delayed_job.log'))
  Delayed::Worker.backend.after_fork
  
  worker = Delayed::Worker.new(@options)
  worker.name_prefix = "#{worker_name} "
  worker.start
rescue => e
  Rails.logger.fatal e
  STDERR.puts e.message
  exit 1
end

#run_process(process_name, dir) ⇒ Object 



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# File 'lib/delayed/command.rb', line 84

def run_process(process_name, dir)
  Daemons.run_proc(process_name, :dir => dir, :dir_mode => :normal, :monitor => @monitor, :ARGV => @args) do |*args|
    $0 = File.join @options[:prefix], process_name if @options[:prefix]
    run process_name
  end
end