Module: Kafka::IO

Included in:
Consumer, MultiProducer, Producer
Defined in:
lib/kafka/io.rb

Constant Summary collapse

HOST = 
"localhost"
PORT = 
9092

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#compression ⇒ Object

Returns the value of attribute compression.



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# File 'lib/kafka/io.rb', line 17

def compression
  @compression
end

#host ⇒ Object

Returns the value of attribute host.



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# File 'lib/kafka/io.rb', line 17

def host
  @host
end

#port ⇒ Object

Returns the value of attribute port.



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# File 'lib/kafka/io.rb', line 17

def port
  @port
end

#socket ⇒ Object

Returns the value of attribute socket.



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# File 'lib/kafka/io.rb', line 17

def socket
  @socket
end

Instance Method Details

#connect(host, port) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/kafka/io.rb', line 22

def connect(host, port)
  raise ArgumentError, "No host or port specified" unless host && port
  self.host = host
  self.port = port
  self.socket = TCPSocket.new(host, port)
end

#disconnect ⇒ Object 



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# File 'lib/kafka/io.rb', line 36

def disconnect
  self.socket.close rescue nil
  self.socket = nil
end

#read(length) ⇒ Object 



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# File 'lib/kafka/io.rb', line 41

def read(length)
  self.socket.read(length) || raise(SocketError, "no data")
rescue
  self.disconnect
  raise SocketError, "cannot read: #{$!.message}"
end

#reconnect ⇒ Object 



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# File 'lib/kafka/io.rb', line 29

def reconnect
  self.socket = TCPSocket.new(self.host, self.port)
rescue
  self.disconnect
  raise
end

#write(data) ⇒ Object 



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# File 'lib/kafka/io.rb', line 48

def write(data)
  self.reconnect unless self.socket
  self.socket.write(data)
rescue
  self.disconnect
  raise SocketError, "cannot write: #{$!.message}"
end