Class: DIY::Controller

Inherits:
Object
  • Object
show all
Defined in:
lib/diy/controller.rb

Instance Method Summary collapse

Constructor Details

#initialize(client, server, offline, strategy) ⇒ Controller

Returns a new instance of Controller.



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# File 'lib/diy/controller.rb', line 6

def initialize( client, server, offline, strategy)
  @client = client
  @server = server
  @offline = offline
  @strategy = strategy
  @before_send = nil
  @timeout = nil
end

Instance Method Details

#before_send(&block) ⇒ Object 



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# File 'lib/diy/controller.rb', line 103

def before_send(&block)
  @before_send = block
end

#client_send(client, pkts) ⇒ Object 



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# File 'lib/diy/controller.rb', line 79

def client_send(client, pkts)
  if @before_send
    pkts = pkts.collect do |pkt| 
      content = pkt.content
      begin
        pkt.content = @before_send.call(content)
      rescue Exception => e
        DIY::Logger.warn("UserError Catch: " + error = BeforeSendCallError.new(e) )
        error.backtrace.each do |msg|
          DIY::Logger.info(msg)
        end
        raise error
      end
      pkt
    end
  end
  begin
    client.inject(pkts)
  rescue FFI::PCap::LibError =>e
    DIY::Logger.warn("SendPacketError Catch: " + e )
    raise e
  end
end

#one_round(client, server, pkts) ⇒ Object 



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# File 'lib/diy/controller.rb', line 53

def one_round( client, server, pkts )
  @error_flag = nil
  @round_count = 0 unless @round_count
  @round_count += 1
  DIY::Logger.info "round #{@round_count}: (c:#{client.__drburi} / s:#{server.__drburi}) #{pkts[0].pretty_print}:(queue= #{pkts.size})"
  if pkts.size >= 10
    DIY::Logger.info "queue size too big: #{pkts.size}, maybe something error"
  end
  server.ready do |recv_pkt|
    next if @error_flag # error accur waiting other thread do with it
    recv_pkt = Packet.new(recv_pkt)
    begin
      @strategy.call(pkts.first, recv_pkt, pkts)
    rescue DIY::UserError =>e
      DIY::Logger.warn("UserError Catch: " + e.inspect)
      e.backtrace.each do |msg|
        DIY::Logger.info(msg)
      end
      @error_flag = e
    end
  end
  client_send(client, pkts)
  wait_recv_ok(pkts)
  server.terminal
end

#run ⇒ Object 



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# File 'lib/diy/controller.rb', line 15

def run
  client = @client
  server = @server
  
  @fail_count = 0
  start_time = Time.now
  #clear
  client.terminal
  server.terminal
  
  loop do
    begin
      pkts = @offline.nexts
      one_round( client, server, pkts )
      client, server = server, client
    rescue HopePacketTimeoutError, UserError, FFI::PCap::LibError => e
      DIY::Logger.warn( "Timeout: Hope packet is #{pkts[0].pretty_print} ") if e.kind_of?(HopePacketTimeoutError)
      @fail_count += 1
      begin
        @offline.next_pcap
        server.terminal
      rescue EOFError
        client.terminal
        server.terminal
        break
      end
      client,server = @client, @server
    rescue EOFError
      client.terminal
      server.terminal
      break
    end
  end
  DRb.stop_service
  end_time = Time.now
  stats_result( end_time - start_time, @fail_count )
end

#stats_result(cost_time, fail_count) ⇒ Object 



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# File 'lib/diy/controller.rb', line 111

def stats_result( cost_time, fail_count )
  DIY::Logger.info " ====== Finished in #{cost_time} seconds"
  DIY::Logger.info " ====== Total fail_count: #{fail_count} failures"
end

#timeout(timeout) ⇒ Object 



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# File 'lib/diy/controller.rb', line 107

def timeout(timeout)
  @timeout = timeout
end

#wait_recv_ok(pkts) ⇒ Object 



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# File 'lib/diy/controller.rb', line 116

def wait_recv_ok(pkts)
  wait_until(@timeout ||= 10) do
    if @error_flag
      raise @error_flag
    end
    pkts.empty?
  end
end

#wait_until(timeout = 10, &block) ⇒ Object 



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# File 'lib/diy/controller.rb', line 125

def wait_until( timeout = 10, &block )
  Timeout.timeout(timeout, DIY::HopePacketTimeoutError.new("hope packet wait timeout after #{timeout} seconds") ) do
    loop do
      break if block.call
      sleep 0.1
    end
  end
end