Class: PerfectQueue::Supervisor

Inherits:
Object
  • Object
show all
Defined in:
lib/perfectqueue/supervisor.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(runner, config = nil, &block) ⇒ Supervisor

Returns a new instance of Supervisor.



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# File 'lib/perfectqueue/supervisor.rb', line 26

def initialize(runner, config=nil, &block)
  # initial logger
  STDERR.sync = true
  @log = DaemonsLogger.new(STDERR)

  @runner = runner
  block = Proc.new { config } if config
  @config_load_proc = block
end

Instance Attribute Details

#engine ⇒ Object (readonly)

Returns the value of attribute engine.



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# File 'lib/perfectqueue/supervisor.rb', line 36

def engine
  @engine
end

Class Method Details

.run(runner, config = nil, &block) ⇒ Object 



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# File 'lib/perfectqueue/supervisor.rb', line 22

def self.run(runner, config=nil, &block)
  new(runner, config, &block).run
end

Instance Method Details

#logrotated ⇒ Object 



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# File 'lib/perfectqueue/supervisor.rb', line 95

def logrotated
  @log.info "reopen a log file"
  @engine.logrotated
  @log.reopen!
  return true
end

#replace(immediate, command = [$0]+ARGV) ⇒ Object 



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# File 'lib/perfectqueue/supervisor.rb', line 83

def replace(immediate, command=[$0]+ARGV)
  @log.info immediate ? "Received immediate binary replace" : "Received graceful binary replace"
  begin
    @engine.replace(immediate, command)
  rescue
    @log.error "failed to replace: #{$!}"
    $!.backtrace.each {|bt| @log.warn "\t#{bt}" }
    return false
  end
  return true
end

#restart(immediate) ⇒ Object 



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# File 'lib/perfectqueue/supervisor.rb', line 71

def restart(immediate)
  @log.info immediate ? "Received immediate restart" : "Received graceful restart"
  begin
    @engine.restart(immediate, load_config)
  rescue
    @log.error "failed to restart: #{$!}"
    $!.backtrace.each {|bt| @log.warn "\t#{bt}" }
    return false
  end
  return true
end

#run ⇒ Object 



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# File 'lib/perfectqueue/supervisor.rb', line 38

def run
  @log.info "PerfectQueue #{VERSION}"

  install_signal_handlers do
    config = load_config
    @engine = Engine.new(@runner, config)
    listen_debug_server(config)
    begin
      @engine.run
    ensure
      @engine.shutdown(true)
    end
  end

  return nil
rescue
  @log.error "#{$!.class}: #{$!}"
  $!.backtrace.each {|x| @log.warn "\t#{x}" }
  return nil
end

#stop(immediate) ⇒ Object 



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# File 'lib/perfectqueue/supervisor.rb', line 59

def stop(immediate)
  @log.info immediate ? "Received immediate stop" : "Received graceful stop"
  begin
    @engine.stop(immediate) if @engine
  rescue
    @log.error "failed to stop: #{$!}"
    $!.backtrace.each {|bt| @log.warn "\t#{bt}" }
    return false
  end
  return true
end