Class: Smartware::Service

Inherits:
Object
  • Object
show all
Defined in:
lib/smartware/service.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config_file) ⇒ Service

Returns a new instance of Service.



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# File 'lib/smartware/service.rb', line 5

def initialize(config_file)
  @config = YAML.load File.read(config_file)
  @interfaces = []
  @devices = []
  @shutdown_holders = 0
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/smartware/service.rb', line 3

def config
  @config
end

Instance Method Details

#publish_event(key, *args) ⇒ Object 



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# File 'lib/smartware/service.rb', line 56

def publish_event(key, *args)
  @event_channel.push [key, args]
end

#publish_reliable_event(key, *args) ⇒ Object 



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# File 'lib/smartware/service.rb', line 60

def publish_reliable_event(key, *args)
  @reliable_event_channel.push [key, args]
end

#start ⇒ Object 



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# File 'lib/smartware/service.rb', line 12

def start
  EventMachine.epoll
  EventMachine.run do
    @event_channel = EventMachine::Channel.new
    @event_channel.subscribe do |(key, args)|
      @pubsub.publish_event key, *args
    end

    @reliable_event_channel = EventMachine::Channel.new
    @reliable_event_channel.subscribe do |(key, args)|
      @pubsub.publish_reliable_event key, *args
    end

    @pubsub = PubSubServer.new "localhost", (@config["pubsub_port"] || 6100)
    @pubsub.repush = ->(connection) do
      @devices.each do |device|
        device.repush_events connection
      end
    end

    @config["interfaces"].each do |config|
      interface = Smartware::Interface.const_get(config['name']).new config, self
      @devices << interface

      if config.include? "uri"
        @interfaces << DRb::DRbServer.new(config["uri"], interface)
      end
    end

    unless @config["connection_timeout"].nil?
      Thread.new do
        begin
          monitor = ConnectionMonitor.new @config["connection_timeout"].to_i

          monitor.run
        rescue => e
          Smartware::Logging.logger.error "Exception in connection monitor thread: #{e}"
          e.backtrace.each { |line| Smartware::Logging.logger.error line }
        end
      end
    end
  end
end

#stop ⇒ Object 



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# File 'lib/smartware/service.rb', line 64

def stop
  @interfaces.each &:stop_service

  callback = method :decr_shutdown_holders

  @devices.each do |interface|
    if interface.shutdown callback
      @shutdown_holders += 1
    end
  end

  EventMachine.stop if @shutdown_holders == 0
end