Class: LogStash::Filters::Cache

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

Overview

This filter provide a cache where you can store data.

Constant Summary collapse

@@cachetab =

This filter needs to keep state.

Hash.new

Instance Method Summary collapse

Instance Method Details

#filter(event) ⇒ Object 



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# File 'lib/logstash/filters/cache.rb', line 45

def filter(event)
  if @get
    event[@field] = @@cachetab[@key]
    if event[@field] == nil
      event["tags"] ||= []
      event["tags"] << "cache_miss" unless event["tags"].include?("cache_miss")
    else
      # filter_matched should go in the last line of our successful code
      filter_matched(event)
    end
  else
    @@cachetab[@key]= event.sprintf(@value)
    # filter_matched should go in the last line of our successful code
    filter_matched(event)
  end

end

#register ⇒ Object 



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# File 'lib/logstash/filters/cache.rb', line 39

def register
  # Nothing
  @threadsafe = false
end