Class: ProconBypassMan::ExternalInput::Channels::TCPIPChannel

Inherits:
Base
  • Object
show all
Defined in:
lib/procon_bypass_man/external_input/channels/tcpip_channel.rb

Defined Under Namespace

Classes: AppServer, ShutdownSignal

Instance Method Summary collapse

Constructor Details

#initialize(port:) ⇒ TCPIPChannel

Returns a new instance of TCPIPChannel.



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# File 'lib/procon_bypass_man/external_input/channels/tcpip_channel.rb', line 45

def initialize(port: )
  @port = port
  super()

  begin
    @server = AppServer.new('0.0.0.0', @port)
  rescue Errno::EADDRINUSE # NOTE: Address already in use - bind(2) for "0.0.0.0" port XXXX
    ProconBypassMan::SendErrorCommand.execute(error: "[ExternalInput][TCPIPChannel] 起動に失敗しました。#{e.message}")
    @server_thread = Thread.start {}
    return
  end

  # NOTE: masterプロセスで起動する
  @server_thread = Thread.start do
    begin
      loop do
        @server.start_server
        @server.run
      end
    rescue Errno::EPIPE, EOFError, Errno::ECONNRESET => e
      ProconBypassMan::SendErrorCommand.execute(error: "[ExternalInput][TCPIPChannel] #{e.message}(#{e})")
      sleep(5)

      @server.shutdown
      retry
    rescue ShutdownSignal => e
      ProconBypassMan::SendErrorCommand.execute(error: "[ExternalInput][TCPIPChannel] ShutdownSignalを受け取りました。終了します。")
      @server.shutdown
    rescue => e
      ProconBypassMan::SendErrorCommand.execute(error: "[ExternalInput][TCPIPChannel] #{e.message}(#{e})")
    end
  end
end

Instance Method Details

#alive_server? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/procon_bypass_man/external_input/channels/tcpip_channel.rb', line 113

def alive_server?
  return false if not @server_thread.alive?

  begin
    TCPSocket.new('0.0.0.0', @port).close
  rescue Errno::ECONNREFUSED, Errno::ECONNRESET
    return false
  end

  true
end

#display_name_for_boot_message ⇒ Object 



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# File 'lib/procon_bypass_man/external_input/channels/tcpip_channel.rb', line 125

def display_name_for_boot_message
  "TCPIP(port: #{@port})"
end

#read ⇒ String, NilClass

NOTE: bypassプロセスから呼ばれ、masterプロセスへ繋ぐ

Returns:

  • (String, NilClass) 


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# File 'lib/procon_bypass_man/external_input/channels/tcpip_channel.rb', line 81

def read
  @socket ||= TCPSocket.new('0.0.0.0', @port)
  read_command = "\n"
  @socket.write(read_command)
  response = @socket.gets&.strip
  # ProconBypassMan.logger.debug { "Received: #{response}" }

  case response
  when /^{/
    return response
  when /^EMPTY/, ''
    return nil
  else
    ProconBypassMan.logger.warn { "[ExternalInput][TCPIPChannel] Unknown response(#{response}, codepoints: #{response.codepoints})" }
    return nil
  end
rescue Errno::EPIPE, EOFError => e
  @socket = nil
  sleep(10)
  ProconBypassMan.logger.error { "[ExternalInput][TCPIPChannel] #{e.message}!!!!!!!(#{e})" }
  retry
rescue => e
  @socket = nil
  ProconBypassMan.logger.error { "[ExternalInput][TCPIPChannel] #{e.message} が起きました(#{e})" }
  return nil
end

#shutdown ⇒ Object 



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# File 'lib/procon_bypass_man/external_input/channels/tcpip_channel.rb', line 108

def shutdown
  ProconBypassMan.logger.info { "[ExternalInput][TCPIPChannel] shutdown" }
  @server_thread.raise(ShutdownSignal)
end