Class: LanGrove::Adaptor::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/langrove/adaptor_base.rb

Instance Method Summary collapse

Constructor Details

#initialize(config, logger) ⇒ Base

Returns a new instance of Base.



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# File 'lib/langrove/adaptor_base.rb', line 9

def initialize( config, logger )

  @config = config
  @logger = logger
  
  @transport = :tcp
  @iface     = '127.0.0.1'
  @port      = 12701
  
  @iface     = @config[ :iface ] if @config.has_key? :iface
  @port      = @config[ :port ]  if @config.has_key? :port
  @transport = @config[ :transport ].to_sym  if @config.has_key? :transport
  
  #
  # Assign the call signature for the EventMachine server
  #
  @em_server_call = case @transport
    
    when :tcp
      
      :start_server
      
    when :udp
      
      :open_datagram_socket
      
    else
      
      :start_server
    
  end

end

Instance Method Details

#listen(client, protocol, handler) ⇒ Object 



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# File 'lib/langrove/adaptor_base.rb', line 43

def listen( client, protocol, handler )
  
  #
  # <client> = {
  # 
  #    :class   => <loaded class constant>
  #    :config  => <client's branch of config>
  # 
  # } 
  # 
  # <protocol> = {  ...the same, but protocolic }
  #
  #

  @logger.info "starting listen at UDP #{@iface}:#{@port}"
  
  EventMachine::send( @em_server_call, @iface, @port, 
  
    client[:class] ) do | client_connected |
      
      #
      # @em_server_call as:
      # 
      # udp - EM::open_datagram_socket, yields an instance of 
      #       client[:class] into here on bind to the port 
      #
      #       ie. at starting to listen
      #       
      #       unverified: ? If more than 1 datagram source is 
      #                   transmitting to here - will there still
      #                   still be only ONE EM:Connection instance?
      # 
      # tcp - EM::start_server yields an new instance of client[:class]
      #       with every connecting socket pair.
      #
      #       ie. On socket pair binding - so each remote client will 
      #           have it's own associated instance of a client[:class] 
      #           running in the machine.
      #
      
      
      #
      # Initialize the client with the (application layer) Protocol
      #
      
      client_connected.logger = @logger
      
      client_connected.config = client[ :config ]
      
      client_connected.protocol = protocol[ :class ]\
      
        .new( protocol[ :config ], @logger )
        
      @logger.info( "TODO: make a reference to the Client on the Handler" )
 
      #
      # Bi-Directionally bind the Client and Handler
      #
      handler.connect( client_connected )
      client_connected.handler = handler
      
      client_connected.start_client
      
      #
      # Client is ready and running inside the reactor
      #
      # EM::start_server will yield again on the next connect.
      # 
      
  end

end