Class: Kafkr::Log

Inherits:
Object
  • Object
show all
Defined in:
lib/kafkr/log.rb

Instance Method Summary collapse

Constructor Details

#initialize(port) ⇒ Log

Returns a new instance of Log.



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# File 'lib/kafkr/log.rb', line 6

def initialize(port)
  @server = TCPServer.new(port)
  @received_file = "./.kafkr/log.txt"
  @broker = MessageBroker.new
  @whitelist = load_whitelist
end

Instance Method Details

#load_whitelist ⇒ Object 



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# File 'lib/kafkr/log.rb', line 13

def load_whitelist
  whitelist = ["localhost", "::1", "127.0.0.1"]
  if File.exist?("whitelist.txt")
    File.readlines("whitelist.txt").each do |line|
      ip = line.strip.sub(/^::ffff:/, "")
      whitelist << ip
    end
  end
  whitelist
end

#start ⇒ Object 



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# File 'lib/kafkr/log.rb', line 24

def start
  loop do
    client = @server.accept
    client_ip = client.peeraddr[3]

    unless whitelisted?(client_ip)
      puts "Connection from non-whitelisted IP: #{client_ip}. Ignored."
      client.close
      next
    end

    @broker.add_subscriber(client)

    Thread.new do

      
      begin

        loop do
          encrypted_message = client.gets
          if encrypted_message.nil?
            @broker.last_sent.delete(client)
            client.close
            @broker.subscribers.delete(client)
            break
          else
            decryptor = Kafkr::Encryptor.new
            message = decryptor.decrypt(encrypted_message.chomp) # Decrypt the message here
            uuid, message_content = extract_uuid(message)
            @broker.broadcast(message_content)
          end
        rescue Errno::ECONNRESET
          client.close
        end 
      rescue StandardError => exception
        #TODO we need to find the place for a global exception handler
      end
    end
  end
end

#whitelisted?(ip) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kafkr/log.rb', line 65

def whitelisted?(ip)
  @whitelist.include?(ip.gsub("::ffff:", ""))
end