Class: LogStash::Filters::Sleep

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/filters/sleep.rb

Overview

Sleep a given amount of time. This will cause logstash to stall for the given amount of time. This is useful for rate limiting, etc.

Instance Method Summary collapse

Instance Method Details

#filter(event) ⇒ Object 



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# File 'lib/logstash/filters/sleep.rb', line 81

def filter(event)
  return unless filter?(event)
  @count += 1

  case @time
    when Fixnum, Float; time = @time
    when nil; # nothing
    else; time = event.sprintf(@time).to_f
  end

  if @replay
    clock = event.timestamp.to_f
    if @last_clock
      delay = clock - @last_clock
      time = delay/time
      if time > 0
        @logger.debug? && @logger.debug("Sleeping", :delay => time)
        sleep(time)
      end
    end
    @last_clock = clock
  else
    if @count >= @every
      @count = 0
      @logger.debug? && @logger.debug("Sleeping", :delay => time)
      sleep(time)
    end
  end
  filter_matched(event)
end

#register ⇒ Object 



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# File 'lib/logstash/filters/sleep.rb', line 69

def register
  if @replay && @time.nil?
    # Default time multiplier is 1 when replay is set.
    @time = 1
  end
  if @time.nil?
    raise ArgumentError, "Missing required parameter 'time' for input/eventlog"
  end
  @count = 0
end