Module: Yup

Defined in:
lib/yup.rb,
lib/yup/state.rb,
lib/yup/version.rb,
lib/yup/state/bdb.rb,
lib/yup/state/redis.rb,
lib/yup/request_handler.rb,
lib/yup/request_forwarder.rb

Defined Under Namespace

Modules: State Classes: RequestForwarder, RequestHandler

Constant Summary collapse

VERSION = 
File.read("#{File.dirname(__FILE__)}/../../VERSION")
@@resend_delay = 
60.0
@@watermark = 
100
@@logger = 
Logger.new(STDOUT)
@@retry_unless_2xx = 
false

Class Method Summary collapse

Class Method Details

.logger ⇒ Object 



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# File 'lib/yup.rb', line 23

def self.logger; @@logger end

.logger=(logger) ⇒ Object 



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# File 'lib/yup.rb', line 24

def self.logger=(logger); @@logger = logger end

.resend_delay ⇒ Object 



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# File 'lib/yup.rb', line 15

def self.resend_delay; @@resend_delay end

.resend_delay=(seconds) ⇒ Object 



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# File 'lib/yup.rb', line 16

def self.resend_delay=(seconds); @@resend_delay = seconds end

.retry_unless_2xx ⇒ Object 



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# File 'lib/yup.rb', line 27

def self.retry_unless_2xx; @@retry_unless_2xx end

.retry_unless_2xx=(bool) ⇒ Object 



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# File 'lib/yup.rb', line 28

def self.retry_unless_2xx=(bool); @@retry_unless_2xx = bool end

.run(config) ⇒ Object 



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# File 'lib/yup.rb', line 30

def self.run(config)
  host        = config[:listen_host] || 'localhost'
  port        = config[:listen_port] || 8080
  status_code = config[:status_code] || 200
  forward_to  = config[:forward_to]
  timeout     = config[:timeout] || 60

  EM.run do
    EM.start_server(host, port, RequestHandler, forward_to, status_code, nil, timeout)
    logger.info { "listening on #{host}:#{port}" }
  end
end

.run_with_bdb(config) ⇒ Object 



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# File 'lib/yup.rb', line 54

def self.run_with_bdb(config)
  require 'yup/state/bdb'

  host        = config[:listen_host] || 'localhost'
  port        = config[:listen_port] || 8080
  status_code = config[:status_code] || 200
  forward_to  = config[:forward_to]
  dbpath      = config[:persistent]
  timeout     = config[:timeout] || 60
  feedback_channel = File.join(Dir.tmpdir, "yupd-#{$$}-feedback")
  state            = State::BDB.new(dbpath, forward_to, feedback_channel)

  pid = Process.fork do
    State::BDB::RequestForwarder.new(state, forward_to, timeout).run_loop
  end

  if pid
    db_closer = proc do
      Yup.logger.info { "Terminating consumer #{$$}" }
      Process.kill("KILL", pid)
      state.dispose()
      exit 0
    end
    Signal.trap("TERM", &db_closer)
    Signal.trap("INT", &db_closer)
  end

  EM.run do
    EM.start_unix_domain_server(feedback_channel, State::BDB::FeedbackHandler, state)
    logger.info { "Feedback through #{feedback_channel}" }

    EM.start_server(host, port, RequestHandler, forward_to, status_code, state, timeout)
    logger.info { "Listening on #{host}:#{port}" }
  end
end

.run_with_redis(config) ⇒ Object 



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# File 'lib/yup.rb', line 90

def self.run_with_redis(config)
  require 'yup/state/redis'

  host        = config[:listen_host] || 'localhost'
  port        = config[:listen_port] || 8080
  status_code = config[:status_code] || 200
  forward_to  = config[:forward_to]
  dbpath      = config[:persistent]
  timeout     = config[:timeout] || 60
  state       = State::Redis.new(dbpath, forward_to)

  pid = Process.fork do
    State::Redis::RequestForwarder.new(state, forward_to, timeout).run_loop
  end

  if pid
    db_closer = proc do
      Yup.logger.info { "Terminating consumer #{$$}" }
      Process.kill("KILL", pid)
      state.dispose()
      exit 0
    end
    Signal.trap("TERM", &db_closer)
    Signal.trap("INT", &db_closer)
  end

  EM.run do
    EM.start_server(host, port, RequestHandler, forward_to, status_code, state, timeout)
    logger.info { "Listening on #{host}:#{port}" }
  end
end

.run_with_state(config) ⇒ Object 



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# File 'lib/yup.rb', line 43

def self.run_with_state(config)
  case State.queue_type(config[:persistent])
  when :bdb
    self.run_with_bdb(config)
  when :redis
    self.run_with_redis(config)
  else
    abort "Unknown scheme of persistent queue."
  end
end

.watermark ⇒ Object 



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# File 'lib/yup.rb', line 19

def self.watermark; @@watermark end

.watermark=(seconds) ⇒ Object 



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# File 'lib/yup.rb', line 20

def self.watermark=(seconds); @@watermark = seconds end