Class: Baykit::BayServer::Agent::GrandAgent

Inherits:
Object
  • Object
show all
Includes:
Baykit::BayServer, Signal, Taxi, Train, Util
Defined in:
lib/baykit/bayserver/agent/grand_agent.rb

Defined Under Namespace

Modules: GrandAgentLifecycleListener

Constant Summary collapse

SELECT_TIMEOUT_SEC = 
10
CMD_OK = 
0
CMD_CLOSE = 
1
CMD_RELOAD_CERT = 
2
CMD_MEM_USAGE = 
3
CMD_SHUTDOWN = 
4
CMD_ABORT = 
5

Class Attribute Summary collapse

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(agent_id, max_ships, anchorable) ⇒ GrandAgent

Returns a new instance of GrandAgent.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 82

def initialize (agent_id, max_ships, anchorable)
  @agent_id = agent_id
  @anchorable = anchorable

  if @anchorable
    @accept_handler = AcceptHandler.new(self, GrandAgent.anchorable_port_map)
  else
    @accept_handler = nil
  end

  @spin_handler = SpinHandler.new(self)
  @non_blocking_handler = NonBlockingHandler.new(self)

  @select_timeout_sec = SELECT_TIMEOUT_SEC
  @max_inbound_ships = max_ships
  @selector = Selector.new()
  @aborted = false
  @unanchorable_transporters = {}

end

Class Attribute Details

.agent_count ⇒ Object (readonly)

Returns the value of attribute agent_count.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 61

def agent_count
  @agent_count
end

.agents ⇒ Object (readonly)

Returns the value of attribute agents.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 59

def agents
  @agents
end

.anchorable_port_map ⇒ Object (readonly)

Returns the value of attribute anchorable_port_map.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 62

def anchorable_port_map
  @anchorable_port_map
end

.listeners ⇒ Object (readonly)

Returns the value of attribute listeners.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 60

def listeners
  @listeners
end

.max_agent_id ⇒ Object (readonly)

Returns the value of attribute max_agent_id.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 65

def max_agent_id
  @max_agent_id
end

.max_ships ⇒ Object (readonly)

Returns the value of attribute max_ships.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 64

def max_ships
  @max_ships
end

.multi_core ⇒ Object (readonly)

Returns the value of attribute multi_core.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 66

def multi_core
  @multi_core
end

.unanchorable_port_map ⇒ Object (readonly)

Returns the value of attribute unanchorable_port_map.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 63

def unanchorable_port_map
  @unanchorable_port_map
end

Instance Attribute Details

#aborted ⇒ Object (readonly)

Returns the value of attribute aborted.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 55

def aborted
  @aborted
end

#accept_handler ⇒ Object (readonly)

Returns the value of attribute accept_handler.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 48

def accept_handler
  @accept_handler
end

#agent_id ⇒ Object (readonly)

Returns the value of attribute agent_id.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 44

def agent_id
  @agent_id
end

#anchorable ⇒ Object (readonly)

Returns the value of attribute anchorable.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 45

def anchorable
  @anchorable
end

#command_receiver ⇒ Object (readonly)

Returns the value of attribute command_receiver.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 56

def command_receiver
  @command_receiver
end

#max_inbound_ships ⇒ Object (readonly)

Returns the value of attribute max_inbound_ships.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 52

def max_inbound_ships
  @max_inbound_ships
end

#non_blocking_handler ⇒ Object (readonly)

Returns the value of attribute non_blocking_handler.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 46

def non_blocking_handler
  @non_blocking_handler
end

#select_timeout_sec ⇒ Object (readonly)

Returns the value of attribute select_timeout_sec.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 51

def select_timeout_sec
  @select_timeout_sec
end

#select_wakeup_pipe ⇒ Object (readonly)

Returns the value of attribute select_wakeup_pipe.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 50

def select_wakeup_pipe
  @select_wakeup_pipe
end

#selector ⇒ Object (readonly)

Returns the value of attribute selector.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 53

def selector
  @selector
end

#send_wakeup_pipe ⇒ Object (readonly)

Returns the value of attribute send_wakeup_pipe.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 49

def send_wakeup_pipe
  @send_wakeup_pipe
end

#spin_handler ⇒ Object (readonly)

Returns the value of attribute spin_handler.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 47

def spin_handler
  @spin_handler
end

#unanchorable_transporters ⇒ Object (readonly)

Returns the value of attribute unanchorable_transporters.



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 54

def unanchorable_transporters
  @unanchorable_transporters
end

Instance Method Details

#abort_agent(err = nil, status = 1) ⇒ Object 



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 215

def abort_agent(err = nil, status = 1)
  if err
    BayLog.fatal("%s abort", self)
    BayLog.fatal_e(err)
  end

  @command_receiver.end()
  GrandAgent.listeners.each do |lis|
    lis.remove(self)
  end

  GrandAgent.agents.delete(@agent_id)

  if BayServer.harbor.multi_core
    exit(1)
  else
    clean()
  end

  @aborted = true
end

#inspect ⇒ Object 



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 109

def inspect()
  return to_s
end

#print_usage ⇒ Object 



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 249

def print_usage()
  # print memory usage
  BayLog.info("Agent#%d MemUsage", @agent_id);
  MemUsage.get(@agent_id).print_usage(1);
end

#reload_cert ⇒ Object 



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 237

def reload_cert()
  GrandAgent.anchorable_port_map.values().each do |port|
    if port.secure()
      begin
        port.secure_docker.reload_cert()
      rescue => e
        BayLog.error_e(e)
      end
    end
  end
end

#run ⇒ Object 



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 113

def run
  BayLog.info(BayMessage.get(:MSG_RUNNING_GRAND_AGENT, self))
  @select_wakeup_pipe = IO.pipe
  @selector.register(@select_wakeup_pipe[0], Selector::OP_READ)
  @selector.register(@command_receiver.communication_channel, Selector::OP_READ)

  # Set up unanchorable channel
  for ch in GrandAgent.unanchorable_port_map.keys() do
    port_dkr = GrandAgent.unanchorable_port_map[ch]
    tp = port_dkr.new_transporter(self, ch)
    @unanchorable_transporters[ch] = tp
    @non_blocking_handler.add_channel_listener(ch, tp)
    @non_blocking_handler.ask_to_start(ch)
    if !@anchorable
      @non_blocking_handler.ask_to_read(ch)
    end
  end

  busy = true
  begin
    while not @aborted
      begin
        count = -1

        if @accept_handler
          test_busy = @accept_handler.ch_count >= @max_inbound_ships
          if test_busy != busy
            busy = test_busy
            if busy
              @accept_handler.on_busy()
            else
              @accept_handler.on_free()
            end
          end
        end

        if !busy && @selector.count() == 2
          # agent finished
          BayLog.debug("%s Selector has no key", self)
          break
        end

        if !@spin_handler.empty?
          timeout = 0
        else
          timeout = @select_timeout_sec
        end

        #@BayServer.debug("Selecting... read=" + read_list.to_s)
        selected_map = @selector.select(timeout)
        #BayLog.debug("%s selected: %s", self, selected_map)

        processed = @non_blocking_handler.register_channel_ops() > 0

        if selected_map.length == 0
          # No channel is selected
          processed |= @spin_handler.process_data()
        end

        selected_map.keys().each do |ch|
          if ch == @select_wakeup_pipe[0]
            # Waked up by ask_to_*
            on_waked_up(ch)
          elsif ch == @command_receiver.communication_channel
            @command_receiver.on_pipe_readable()
          elsif @accept_handler && @accept_handler.server_socket?(ch)
            @accept_handler.on_acceptable(ch)
          else
            @non_blocking_handler.handle_channel(ch, selected_map[ch])
          end
          processed = true
        end

        if not processed
          # timeout check
          @non_blocking_handler.close_timeout_sockets()
          @spin_handler.stop_timeout_spins()
        end

      rescue => e
        raise e
      end
    end # while

  rescue => e
    BayLog.error_e(e)
    raise e
  ensure
    BayLog.info("%s end", self)
    abort_agent(nil, 0)
  end
end

#run_command_receiver(com_channel) ⇒ Object 



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 260

def run_command_receiver(com_channel)
  @command_receiver = CommandReceiver.new(self, com_channel)
end

#shutdown ⇒ Object 



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 206

def shutdown()
  BayLog.debug("%s shutdown", self)
  if @accept_handler != nil
    @accept_handler.shutdown()
  end
  @aborted = true
  wakeup()
end

#to_s ⇒ Object 



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 104

def to_s()
  return "Agt#" + @agent_id.to_s
end

#wakeup ⇒ Object 



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# File 'lib/baykit/bayserver/agent/grand_agent.rb', line 255

def wakeup
  #BayLog.debug("%s wakeup", self)
  IOUtil.write_int32(@select_wakeup_pipe[1], 0)
end