Class: Rabbit::Twitter::GLibConnection

Inherits:
Object
  • Object
show all
Defined in:
lib/rabbit/twitter.rb

Instance Method Summary collapse

Constructor Details

#initialize(logger, handler, options) ⇒ GLibConnection

Returns a new instance of GLibConnection.



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# File 'lib/rabbit/twitter.rb', line 120

def initialize(logger, handler, options)
  @logger = logger
  @options = options
  @handler = handler
  @socket = nil
  @channel = nil
  @source_ids = []
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/rabbit/twitter.rb', line 195

def close
  return if @socket.nil?
  @source_ids.reject! do |id|
    GLib::Source.remove(id)
    true
  end
  @channel = nil
  @socket.close
end

#connect ⇒ Object 



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# File 'lib/rabbit/twitter.rb', line 129

def connect
  close
  @socket = TCPSocket.new(@options[:host], "http")
  if GLib.const_defined?(:IOChannelWin32Socket)
    @channel = GLib::IOChannelWin32Socket.new(@socket.fileno)
  else
    @channel = GLib::IOChannel.new(@socket.fileno)
  end
  begin
    @channel.flags = GLib::IOChannel::FLAG_NONBLOCK
  rescue GLib::IOChannelError
    @logger.warn("[twitter][read][error] " +
                 "failed to set non-blocking mode: " +
                 "#{$!.message}(#{$!.class})")
  end
  reader_id = @channel.add_watch(GLib::IOChannel::IN) do |io, condition|
    @logger.debug("[twitter][read][start]")
    data = io.read(4096)
    @logger.debug("[twitter][read][done] #{data.bytesize}")
    if data.empty?
      @source_ids.reject! {|id| id == reader_id}
      @logger.debug("[twitter][read][eof]")
      false
    else
      @handler.receive_data(data)
      true
    end
  end
  @source_ids << reader_id
  error_id = @channel.add_watch(GLib::IOChannel::ERR) do |io, condition|
    @handler.receive_error(condition)
    true
  end
  @source_ids << error_id
  @handler.extend(GLibAdapter)
  @handler.connection = self
  @handler.connection_completed
end

#reconnect(options = {}) ⇒ Object 



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# File 'lib/rabbit/twitter.rb', line 205

def reconnect(options={})
  close
  after = options[:after] || 0
  if after.zero?
    connect
  else
    id = GLib::Timeout.add(after) do
      connect
      false
    end
    @source_ids << id
  end
end

#send_data(data) ⇒ Object 



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# File 'lib/rabbit/twitter.rb', line 168

def send_data(data)
  rest = data.bytesize
  writer_id = @channel.add_watch(GLib::IOChannel::OUT) do |io, condition|
    if rest.zero?
      @logger.debug("[twitter][flush][start]")
      @channel.flush
      @logger.debug("[twitter][flush][done]")
      @source_ids.reject! {|id| id == writer_id}
      false
    else
      @logger.debug("[twitter][write][start]")
      written_size = @channel.write(data)
      if written_size.is_a?(Numeric)
        @logger.debug("[twitter][write][done] #{written_size}")
        rest -= written_size
        data[0, written_size] = ""
      else
        # for Ruby/GLib2 < 0.90.9
        rest = 0
        data.replace("")
      end
      true
    end
  end
  @source_ids << writer_id
end