Class: Baykit::BayServer::Agent::Monitor::GrandAgentMonitor

Inherits:
Object
  • Object
show all
Includes:
Rudders, Util
Defined in:
lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(agt_id, anchorable, rd, child_thread, child_pid) ⇒ GrandAgentMonitor

Returns a new instance of GrandAgentMonitor.



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 32

def initialize(agt_id, anchorable, rd, child_thread, child_pid)
  @agent_id = agt_id
  @anchorable = anchorable
  @rudder = rd
  @child_thread = child_thread
  @child_pid = child_pid
end

Class Attribute Details

.cur_id ⇒ Object (readonly)

Returns the value of attribute cur_id.



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 16

def cur_id
  @cur_id
end

.finale ⇒ Object (readonly)

Returns the value of attribute finale.



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 18

def finale
  @finale
end

.monitors ⇒ Object (readonly)

Returns the value of attribute monitors.



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 17

def monitors
  @monitors
end

.num_agents ⇒ Object (readonly)

Returns the value of attribute num_agents.



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 15

def num_agents
  @num_agents
end

Instance Attribute Details

#agent_id ⇒ Object (readonly)

Returns the value of attribute agent_id.



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 26

def agent_id
  @agent_id
end

#anchorable ⇒ Object (readonly)

Returns the value of attribute anchorable.



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 27

def anchorable
  @anchorable
end

#child_pid ⇒ Object (readonly)

Returns the value of attribute child_pid.



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 30

def child_pid
  @child_pid
end

#child_thread ⇒ Object (readonly)

Returns the value of attribute child_thread.



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 29

def child_thread
  @child_thread
end

#rudder ⇒ Object (readonly)

Returns the value of attribute rudder.



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 28

def rudder
  @rudder
end

Class Method Details

.abort_all ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 271

def self.abort_all()
  @finale = true
  @monitors.dup().values.each do |mon|
    mon.abort()
  end
  exit(1)
end

.add(anchoroable) ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 131

def self.add(anchoroable)
  @cur_id = @cur_id + 1
  agt_id = @cur_id
  if agt_id > 100
    BayLog.error("Too many agents started")
    exit(1)
  end

  if BayServer.harbor.multi_core
    new_argv = BayServer.commandline_args.dup
    new_argv.insert(0, "ruby")
    new_argv << "-agentid=" + agt_id.to_s

    ports = ""

    no_close_io = {}  # Port list not to close on spawned
    BayServer.anchorable_port_map.each_key do |rd|
      no_close_io[rd.key()] = rd.key()
      if ports != ""
        ports +=","
      end
      ports += rd.key().fileno.to_s
    end
    new_argv << "-ports=" + ports

    server = TCPServer.open("localhost", 0)
    #BayLog.info("port=%d", server.local_address.ip_port)
    new_argv << "-monitor_port=" + server.local_address.ip_port.to_s

    if SysUtil.run_on_windows()
      child_pid = spawn(ENV, new_argv.join(" "))
    else
      child_pid = spawn(ENV, new_argv.join(" "), no_close_io)
    end

    BayLog.debug("Process spawned cmd=%s pid=%d", new_argv, child_pid)

    client_socket = server.accept()
    server.close()

  else

    if SysUtil::run_on_windows()
      pair = Socket.socketpair(Socket::AF_INET, Socket::SOCK_STREAM, 0)
    else
      pair = Socket.socketpair(Socket::AF_UNIX, Socket::SOCK_STREAM, 0)
    end

    client_socket = pair[0]
    GrandAgent.add(agt_id, anchoroable)

    # Agents run on single core (thread mode)
    child_thread = Thread.new() do
      agt = GrandAgent.get(agt_id)
      agt.add_command_receiver(IORudder.new(pair[1]))
      agt.start()
    end

  end

  mon =
    GrandAgentMonitor.new(
      agt_id,
      anchoroable,
      IORudder.new(client_socket),
      child_thread,
      child_pid)
  @monitors[agt_id] = mon
  mon.start

end

.agent_aborted(agt_id, pid, anchorable) ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 203

def self.agent_aborted(agt_id, pid, anchorable)
  BayLog.info(BayMessage.get(:MSG_GRAND_AGENT_SHUTDOWN, agt_id))

  if pid != nil
    begin
      Process.kill("TERM", pid)
    rescue => e
      BayLog.debug_e(e, "Error on killing process")
    end
    Process.wait(pid)
  end
  @monitors.delete(agt_id)

  if not @finale
    if @monitors.length < @num_agents
      begin
        if !BayServer.harbor.multi_core
          GrandAgent.add(-1, @anchorable)
        end
        self.add(@anchorable)
      rescue => e
        BayLog.error_e(e)
      end
    end
  end
end

.buffer_to_int(buf) ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 285

def self.buffer_to_int(buf)
  return buf.unpack("N").first
end

.init(num_agents) ⇒ Object

Class methods



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 124

def self.init(num_agents)
  @num_agents = num_agents
  @num_agents.times do
    add(true)
  end
end

.int_to_buffer(val) ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 289

def self.int_to_buffer(val)
  return [val].pack("N")
end

.join ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 230

def self.join
  while !@monitors.empty?
    err = nil
    @monitors.values.each do |mon|
      begin
        mon.child_thread.join
        sleep 5
      rescue Interrupt => e
        err = e
        BayLog.error("%s Interrupted! Kill child: %d", mon, mon.child_pid)
        begin
          Process.kill("INT", mon.child_pid)
        rescue SystemCallError => e
          BayLog.error("%s Failed to kill child: %s", mon, e)
        end
      end
    end
    if err
      raise err
    end
  end
end

.print_usage_all ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 279

def self.print_usage_all()
  @monitors.values.each do |mon|
    mon.print_usage()
  end
end

.reload_cert_all ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 252

def self.reload_cert_all()
  @monitors.values.each { |mon| mon.reload_cert() }
end

.restart_all ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 256

def self.restart_all()
  old_monitors = @monitors.dup()

  #@agent_count.times {add()}

  old_monitors.values.each { |mon| mon.shutdown() }
end

.shutdown_all ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 264

def self.shutdown_all()
  @finale = true
  @monitors.dup().values.each do |mon|
    mon.shutdown()
  end
end

Instance Method Details

#abort ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 81

def abort()
  BayLog.debug("%s Send abort command", self)
  send(GrandAgent::CMD_ABORT)
end

#close ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 103

def close()
  @rudder.close()
end

#on_read_catch_up ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 107

def on_read_catch_up()

end

#print_usage ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 91

def print_usage()
  BayLog.debug("%s Send mem_usage command", self)
  send(GrandAgent::CMD_MEM_USAGE)
  sleep(0.5)  # Lazy implementation
end

#reload_cert ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 86

def reload_cert()
  BayLog.debug("%s Send reload command", self)
  send(GrandAgent::CMD_RELOAD_CERT)
end

#req_catch_up ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 110

def req_catch_up()

end

#run ⇒ Object 



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

def run()
  begin
    while true do
      buf = " " * 4

      n = @rudder.read(buf, 4)
      if n == -1
        raise EOFError.new
      end
      if n < 4
        raise IOError.new("Cannot read int: nbytes=#{n}")
      end
      res = buffer_to_int(buf)
      if res == GrandAgent::CMD_CLOSE
        BayLog.debug("%s read Close", self)
        break
      elsif res == GrandAgent::CMD_CATCHUP
        on_read_catch_up
      else
        BayLog.debug("%s read OK: %d", self, res);
      end

    end
  rescue EOFError, IOError => e
    BayLog.fatal("%s Agent terminated", self)
  rescue Exception => e
    BayLog.fatal_e(e)
  end

  GrandAgentMonitor.agent_aborted @agent_id, @child_pid, @anchorable
end

#send(cmd) ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 97

def send(cmd)
  BayLog.debug("%s send command %s rd=%s", self, cmd, @rudder)
  buf = GrandAgentMonitor.int_to_buffer(cmd)
  @rudder.write(buf)
end

#shutdown ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 76

def shutdown()
  BayLog.debug("%s send shutdown command", self)
  send(GrandAgent::CMD_SHUTDOWN)
end

#start ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 114

def start
  @child_thread = Thread.new do
    run()
  end
end

#to_s ⇒ Object 



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# File 'lib/baykit/bayserver/agent/monitor/grand_agent_monitor.rb', line 40

def to_s()
  return "Monitor##{@agent_id}"
end