Class: Raad::Runner

Inherits:
Object
  • Object
show all
Includes:
Daemonizable
Defined in:
lib/raad/runner.rb

Constant Summary collapse

SECOND = 
1
STOP_TIMEOUT = 
60 * SECOND

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Daemonizable

#daemonize, #force_kill_and_remove_pid_file, #pid, #post_fork_setup, #read_pid_file, #remove_pid_file, #remove_stale_pid_file, #send_signal, #write_pid_file

Constructor Details

#initialize(argv, service_class) ⇒ Runner

Create a new Runner

Parameters:

  • argv (Array) —

    command line arguments

  • service_class (Class) —

    service class



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# File 'lib/raad/runner.rb', line 18

def initialize(argv, service_class)
  @argv = argv.dup # lets keep a copy for jruby double-launch
  @service_class = service_class
  @parsed_options = nil

  @stop_lock = Mutex.new
  @stop_signaled = false

  # parse command line options and set @parsed_options
  options_parser = service_class.respond_to?(:options_parser) ? service_class.options_parser(create_options_parser, Raad.custom_options) : create_options_parser
  begin
    options_parser.parse!(argv)
  rescue OptionParser::InvalidOption => e
    puts(">> #{e.message}")
    exit!(false)
  end

  # grab what's left after options, which should be the start/stop command
  @parsed_options[:command] = argv[0].to_s.downcase
  unless ['start', 'stop', 'post_fork'].include?(@parsed_options[:command])
    puts(">> start|stop command is required")
    exit!(false)
  end

  # load config if present
  Configuration.load(@parsed_options[:config] || File.expand_path("./config/#{default_service_name(service_class)}.rb"))

  # default service name 
  @service_name = @parsed_options[:name] || Configuration.daemon_name || default_service_name(service_class)

  # @pid_file is required to become Daemonizable
  @pid_file = @parsed_options.delete(:pid_file) || "./#{@service_name}.pid"

  # default stop timeout
  @stop_timeout = (@parsed_options.delete(:stop_timeout) || Configuration.stop_timeout || STOP_TIMEOUT).to_i

  # logger options
  @parsed_options[:log_file] = (@parsed_options[:daemonize] ? File.expand_path("#{@service_name}.log") : nil) unless @parsed_options[:log_file]
  @parsed_options[:log_stdout] = !@parsed_options[:daemonize] unless @parsed_options[:log_stdout]
  @logger_options = {
    :file => @parsed_options.delete(:log_file) || Configuration.log_file,
    :stdout => @parsed_options.delete(:log_stdout) || Configuration.log_stdout,
    :verbose => @parsed_options.delete(:verbose) || Configuration.verbose,
    :pattern => @parsed_options.delete(:log_pattern) || Configuration.log_pattern,
  }
end

Instance Attribute Details

#pid_file ⇒ Object

Returns the value of attribute pid_file.



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# File 'lib/raad/runner.rb', line 12

def pid_file
  @pid_file
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/raad/runner.rb', line 65

def run
  # check for stop command, @pid_file must be set
  if @parsed_options[:command] == 'stop'
    puts(">> Raad service wrapper v#{VERSION} stopping")
    # first send the TERM signal which will invoke the daemon wait_or_will method which will timeout after @stop_timeout
    # if still not stopped afer @stop_timeout + 2 seconds, KILL -9 will be sent.
    success = send_signal('TERM', @stop_timeout + (2 * SECOND)) 
    exit(success)
  end

  Dir.chdir(File.expand_path(File.dirname("./"))) unless Raad.test?

  if @parsed_options[:command] == 'post_fork'
    # we've been spawned and re executed, finish setup
    post_fork_setup(@service_name, @parsed_options[:redirect])
    start_service
  else
    puts(">> Raad service wrapper v#{VERSION} starting")
    @parsed_options[:daemonize] ? daemonize(@argv, @service_name, @parsed_options[:redirect]) {start_service} : start_service
  end
end