Class: LogStash::Filters::Esquerystring

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

Instance Method Summary collapse

Instance Method Details

#filter(event) ⇒ Object 



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# File 'lib/logstash/filters/esquerystring.rb', line 19

def filter(event)
  values = []

  @source.each do |field|
    next unless event.include?(field)
    value = event.get(field)
    next if value.nil?
    value = [value] unless value.is_a?(Array)
    next if value.length == 0
    values += value
  end

  return if values.length == 0
  values = values.uniq.map { |x| '"' + x + '"' }
  values_str = "(" + values.join(" OR ") + ")"
  if values_str.length > @maxlength
    msg = "Produced too long query string (>#{@maxlength}): #{values_str}"
    if @length_autofix
      while values_str.length > @maxlength
        values.pop
        values_str = "(" + values.join(" OR ") + ")"
      end
      @logger.warn(msg + "; Autofixed to: #{values_str}")
      event.set(@target, values_str)
    else
      @logger.error(msg)
    end
  else
    event.set(@target, values_str)
  end
end

#register ⇒ Object 



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# File 'lib/logstash/filters/esquerystring.rb', line 14

def register
  # Nothing to do
end