Class: RemoteSyslog::TcpEndpoint

Inherits:
Object
  • Object
show all
Defined in:
lib/remote_syslog/tcp_endpoint.rb

Overview

Additional class that uses TCP but no TLS. Has the benefit of a greater max packet size

Defined Under Namespace

Classes: Handler

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(address, port, options = {}) ⇒ TcpEndpoint

Returns a new instance of TcpEndpoint.



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# File 'lib/remote_syslog/tcp_endpoint.rb', line 25

def initialize(address, port, options = {})
  @address            = address
  @port               = port.to_i
  @queue_limit        = options[:queue_limit] || 10_000
  @logger             = options[:logger] || Logger.new(STDERR)

  # Try to resolve the address
  resolve_address

  # Every 60 seconds we'll see if the address has changed
  EventMachine.add_periodic_timer(60) do
    resolve_address
  end

  connect
end

Instance Attribute Details

#connection ⇒ Object

Returns the value of attribute connection.



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# File 'lib/remote_syslog/tcp_endpoint.rb', line 21

def connection
  @connection
end

#logger ⇒ Object (readonly)

Returns the value of attribute logger.



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# File 'lib/remote_syslog/tcp_endpoint.rb', line 23

def logger
  @logger
end

Instance Method Details

#address ⇒ Object 



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# File 'lib/remote_syslog/tcp_endpoint.rb', line 55

def address
  @cached_ip || @address
end

#connect ⇒ Object 



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# File 'lib/remote_syslog/tcp_endpoint.rb', line 59

def connect
  logger.debug "Connecting to #{address}:#{@port}"
  EventMachine.connect(address, @port, TcpEndpoint::Handler, self)
end

#resolve_address ⇒ Object 



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# File 'lib/remote_syslog/tcp_endpoint.rb', line 48

def resolve_address
  request = EventMachine::DnsResolver.resolve(@address)
  request.callback do |addrs|
    @cached_ip = addrs.first
  end
end

#unbind ⇒ Object 



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# File 'lib/remote_syslog/tcp_endpoint.rb', line 64

def unbind
  @connection = nil

  EventMachine.add_timer(1) do
    connect
  end
end

#write(value) ⇒ Object 



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# File 'lib/remote_syslog/tcp_endpoint.rb', line 72

def write(value)
  if @connection
    if @queue
      @connection.send_data(@queue.join("\n") + "\n")
      @queue = nil
    end
    @connection.send_data(value + "\n")
  else
    (@queue ||= []) << value

    # Make sure our queue does not get to be too big
    @queue.shift if @queue.length > @queue_limit
  end
end