Class: PikaQue::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/pika_que/cli.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#environment ⇒ Object

Returns the value of attribute environment.



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# File 'lib/pika_que/cli.rb', line 10

def environment
  @environment
end

Instance Method Details

#config ⇒ Object 



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# File 'lib/pika_que/cli.rb', line 41

def config
  PikaQue.config
end

#daemonize ⇒ Object 



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# File 'lib/pika_que/cli.rb', line 58

def daemonize
  return unless config[:daemon]

  files_to_reopen = []
  ObjectSpace.each_object(File) do |file|
    files_to_reopen << file unless file.closed?
  end

  ::Process.daemon(true, true)

  files_to_reopen.each do |file|
    begin
      file.reopen file.path, "a+"
      file.sync = true
    rescue ::Exception
    end
  end

  [$stdout, $stderr].each do |io|
    File.open(config[:logfile], 'ab') do |f|
      io.reopen(f)
    end
    io.sync = true
  end
  $stdin.reopen(File::NULL)

  init_logger
end

#init_config(opts) ⇒ Object 



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# File 'lib/pika_que/cli.rb', line 45

def init_config(opts)
  if opts[:config]
    config.load(File.expand_path(opts[:config]))
  end
  config.merge!(opts)
end

#init_logger ⇒ Object 



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# File 'lib/pika_que/cli.rb', line 52

def init_logger
  PikaQue::Logging.init_logger(config[:logfile]) if config[:logfile]
  PikaQue.logger.level = ::Logger::WARN if config[:quiet]
  PikaQue.logger.level = ::Logger::DEBUG if config[:verbose]
end

#load_app ⇒ Object 



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# File 'lib/pika_que/cli.rb', line 96

def load_app
  if File.directory?(config[:require])
    rails_path = File.expand_path(File.join(config[:require], 'config', 'environment.rb'))
    if File.exist?(rails_path)
      ENV['RACK_ENV'] = ENV['RAILS_ENV'] = environment
      PikaQue.logger.info "found rails project (#{config[:require]}), booting app in #{ENV['RACK_ENV']} environment"
      require 'rails'
      require 'pika_que/rails'
      require rails_path
      ::Rails.application.eager_load!
    end
  else
    require(File.expand_path(config[:require])) || raise(ArgumentError, 'require returned false')
  end
end

#parse(args = ARGV) ⇒ Object 



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# File 'lib/pika_que/cli.rb', line 12

def parse(args = ARGV)
  opts = parse_options(args)
  init_config(opts)
  init_logger
  daemonize
  write_pid
end

#parse_options(args) ⇒ Object 



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# File 'lib/pika_que/cli.rb', line 122

def parse_options(args)
  opts = {}

  @parser = OptionParser.new do |o|
    o.banner = 'usage: pika_que [options]'

    o.on '-c', '--concurrency INT', "processor threads to use" do |arg|
      opts[:concurrency] = Integer(arg)
    end

    o.on '-d', '--daemon', "Daemonize process" do |arg|
      opts[:daemon] = arg
    end

    o.on '-e', '--environment ENV', "Application environment" do |arg|
      opts[:environment] = arg
    end

    o.on '-q', '--quiet', "Print quiet output" do |arg|
      opts[:quiet] = arg
    end

    o.on '-v', '--verbose', "Print verbose output" do |arg|
      opts[:verbose] = arg
    end

    o.on '-r', '--require [PATH|DIR]', "Location of Rails application with workers or file to require" do |arg|
      opts[:require] = arg
    end

    o.on '-w', '--worker WORKER(S)', "comma separated list of workers" do |arg|
      opts[:workers] = arg.split(",")
    end

    o.on '--no-delay', "turn off delay processor" do |arg|
      opts[:delay] = arg
    end

    o.on '-C', '--config PATH', "path to config yml file" do |arg|
      opts[:config] = arg
    end

    o.on '-L', '--logfile PATH', "path to writable logfile" do |arg|
      opts[:logfile] = arg
    end

    o.on '-P', '--pidfile PATH', "path to pidfile" do |arg|
      opts[:pidfile] = arg
    end

    o.on '-V', '--version', "Print version and exit" do
      puts "PikaQue #{PikaQue::VERSION}"
      exit 0
    end

    o.on_tail '-h', '--help', 'Show this message and exit' do
      puts o
      exit 0
    end
  end

  @parser.parse!(args)

  @environment = opts[:environment] || ENV['RAILS_ENV'] || ENV['RACK_ENV'] || 'development'

  opts[:logfile] ||= opts[:daemon] ? 'pika_que.log' : STDOUT

  opts
end

#prepare_server ⇒ Object 



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# File 'lib/pika_que/cli.rb', line 112

def prepare_server
  PikaQue.middleware do |chain|
    config[:middlewares].each{ |m| chain.add PikaQue::Util.constantize(m) } if config[:middlewares]
  end

  PikaQue.reporters do |rptrs|
    config[:reporters].each{ |r| rptrs << PikaQue::Util.constantize(r).new }
  end
end

#run ⇒ Object 



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# File 'lib/pika_que/cli.rb', line 20

def run

  load_app
  prepare_server

  runner = Runner.new.tap{ |r| r.setup_processors }

  begin

    Launcher.launch(runner) do
      runner.run
    end

    exit 0
  rescue Interrupt, SetupError => e
    PikaQue.logger.info "Shutting down: #{e.class.name} received"
    runner.stop
    exit 1
  end
end

#write_pid ⇒ Object 



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# File 'lib/pika_que/cli.rb', line 87

def write_pid
  if path = config[:pidfile]
    pidfile = File.expand_path(path)
    File.open(pidfile, 'w') do |f|
      f.puts ::Process.pid
    end
  end
end