code: def configure(logstash_host=None, logstash_port=None, logdir=None):
      '''Configuration settings.'''
  
      if not (logstash_host or logstash_port or logdir):
          raise ValueError('you must specify at least one parameter')
  
      config.logstash.host = logstash_host or config.logstash.host
      config.logstash.port = logstash_port or config.logstash.port
      config.logdir = logdir or config.logdir
  
      create_logdir(config.logdirf configure(logstash_host=None, logstash_port=None, logdir=None):
      '''Configuration settings.'''
  
      if not (logstash_host or logstash_port or logdir):
          raise ValueError('you must specify at least one parameter')
  
      config.logstash.host = logstash_host or config.logstash.host
      config.logstash.port = logstash_port or config.logstash.port
      config.logdir = logdir or config.logdir
  
      create_logdir(config.logdir)
docs: Configuration settings.