Class: Daemonic::Producer

Inherits:
Object
  • Object
show all
Defined in:
lib/daemonic/producer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(worker, options) ⇒ Producer 



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# File 'lib/daemonic/producer.rb', line 6

def initialize(worker, options)
  @worker      = worker
  @options     = options
  @concurrency = options.fetch(:concurrency) { 4 }
  @queue_size  = options.fetch(:queue_size) { @concurrency + 1 }
  @logger      = options[:logger]
  @running     = true
end

Instance Attribute Details

#concurrency ⇒ Object (readonly)

Returns the value of attribute concurrency.



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# File 'lib/daemonic/producer.rb', line 4

def concurrency
  @concurrency
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/daemonic/producer.rb', line 4

def options
  @options
end

#queue_size ⇒ Object (readonly)

Returns the value of attribute queue_size.



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# File 'lib/daemonic/producer.rb', line 4

def queue_size
  @queue_size
end

#worker ⇒ Object (readonly)

Returns the value of attribute worker.



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# File 'lib/daemonic/producer.rb', line 4

def worker
  @worker
end

Instance Method Details

#logger ⇒ Object 



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# File 'lib/daemonic/producer.rb', line 53

def logger
  @logger ||= @options.fetch(:logger) {
    Logger.new(@options[:log] || STDOUT).tap { |logger|
      logger.level = @options[:log_level] || Logger::INFO
    }
  }
end

#run ⇒ Object 



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# File 'lib/daemonic/producer.rb', line 15

def run

  logger.info "Starting producer with #{concurrency} consumer threads."

  at_exit {
    last_error = $!
    if last_error
      msg = "Shutting down: #{last_error.inspect}\n#{last_error.backtrace.join("\n")}"
      logger.fatal msg
      $stdout.puts msg
    else
      logger.fatal "Shutting down"
      $stdout.puts "Shutting down"
    end
  }

  Signal.trap("INT") { stop }
  Signal.trap("TERM") { stop }

  pool = Pool.new(self)

  producer = Thread.new do
    while @running
      worker.produce(pool)
      Thread.pass
    end
    logger.info { "Producer has been shut down. Stopping the thread pool" }
    pool.stop
  end

  producer.join

end

#stop ⇒ Object 



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# File 'lib/daemonic/producer.rb', line 49

def stop
  @running = false
end