Class: LogStash::Filters::Linelookup

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

Instance Method Summary collapse

Instance Method Details

#filter(event) ⇒ Object 



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# File 'lib/logstash/filters/linelookup.rb', line 29

def filter(event)
  retries = 2  
  begin

    @connmu.lock
    @lookupconn ||= connect
    @lookupconn.puts(event.sprintf(@query))
    @lookupconn.flush

    response = @lookupconn.gets.chop
    @connmu.unlock

    if response != @miss_value
      event.set(@target, response)
      filter_matched(event)
    end

  rescue => e
    @logger.warn("Failed to query lookup service", :event => event, :exception => e)
    @lookupconn = nil
    retries -= 1
    unless retries < 0
      retry
    else
      @logger.warn("Too many reties. Giving up.", :event => event)
      event.tag("_linelookup_failure")
    end
  end

end

#register ⇒ Object 



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# File 'lib/logstash/filters/linelookup.rb', line 23

def register
  @lookupconn = nil
  @connmu = Mutex.new
end