Class: TwemproxyExporter::Twemproxy

Inherits:
Object
  • Object
show all
Defined in:
lib/twemproxy_exporter/twemproxy.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(exporter, host = 'localhost', port = 22222) ⇒ Twemproxy

Returns a new instance of Twemproxy.



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# File 'lib/twemproxy_exporter/twemproxy.rb', line 10

def initialize(exporter, host = 'localhost', port = 22222)
  @exporter = exporter
  @host     = host
  @port     = port
end

Instance Attribute Details

#exporter ⇒ Object (readonly)

Returns the value of attribute exporter.



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# File 'lib/twemproxy_exporter/twemproxy.rb', line 6

def exporter
  @exporter
end

#host ⇒ Object (readonly)

Returns the value of attribute host.



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# File 'lib/twemproxy_exporter/twemproxy.rb', line 7

def host
  @host
end

#port ⇒ Object (readonly)

Returns the value of attribute port.



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# File 'lib/twemproxy_exporter/twemproxy.rb', line 8

def port
  @port
end

Instance Method Details

#count ⇒ Object 



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# File 'lib/twemproxy_exporter/twemproxy.rb', line 16

def count
  stats  = self.stats
  name   = stats['source']
  labels = {twemproxy: name}

  @exporter.total_connections.count stats['total_connections'], labels
  @exporter.curr_connections.count  stats['curr_connections'],  labels
  @exporter.uptime.count            stats['uptime'],            labels

  stats.each do |cluster, cinfo|
    next unless cinfo.is_a? Hash
    labels = {twemproxy: name, cluster: cluster}

    @exporter.fragments.count          cinfo['fragments'],          labels
    @exporter.forward_error.count      cinfo['forward_error'],      labels
    @exporter.server_ejects.count      cinfo['server_ejects'],      labels
    @exporter.client_connections.count cinfo['client_connections'], labels
    @exporter.client_err.count         cinfo['client_err'],         labels
    @exporter.client_eof.count         cinfo['client_eof'],         labels

    cinfo.each do |server, sinfo|
      next unless sinfo.is_a? Hash
      labels = {twemproxy: name, cluster: cluster, server: server}

      @exporter.in_queue.count           sinfo['in_queue'],           labels
      @exporter.in_queue_bytes.count     sinfo['in_queue_bytes'],     labels
      @exporter.out_queue.count          sinfo['out_queue'],          labels
      @exporter.out_queue_bytes.count    sinfo['out_queue_bytes'],    labels
      @exporter.request_bytes.count      sinfo['request_bytes'],      labels
      @exporter.requests.count           sinfo['requests'],           labels
      @exporter.response_bytes.count     sinfo['response_bytes'],     labels
      @exporter.responses.count          sinfo['responses'],          labels
      @exporter.server_connections.count sinfo['server_connections'], labels
      @exporter.server_ejected_at.count  sinfo['server_ejected_at'],  labels
      @exporter.server_eof.count         sinfo['server_eof'],         labels
      @exporter.server_err.count         sinfo['server_err'],         labels
      @exporter.server_timedout.count    sinfo['server_timedout'],    labels
    end
  end
rescue StandardError => e
  warn e
end

#stats ⇒ Object 



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# File 'lib/twemproxy_exporter/twemproxy.rb', line 59

def stats
  socket = TCPSocket.new(@host, @port)
  return YAML.load(socket.read) if select([socket], nil, nil, @exporter.timeout)
  raise "Connection to #{@host}:#{@port} timed out after #{@exporter.timeout} seconds."
ensure
  socket.close if socket
end