Class: Fluent::Plugin::SingleValueFilter

Inherits:
Filter
  • Object
show all
Defined in:
lib/fluent/plugin/filter_single_key.rb

Instance Method Summary collapse

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/filter_single_key.rb', line 17

def configure(conf)
  super

  @key_pattern = Regexp.new(@key_pattern)
  @keep_key_pattern = Regexp.new(@keep_key_pattern) if @keep_key_pattern
end

#filter_stream(tag, es) ⇒ Object 



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# File 'lib/fluent/plugin/filter_single_key.rb', line 24

def filter_stream(tag, es)
  new_es = MultiEventStream.new
  es.each do |time, record|
    begin
      record.each do |k, v|
        if k =~ @key_pattern
          new_record =
            if @new_key
              {k.gsub(@key_pattern, @new_key) => v}
            else
              {k => v}
            end

          if @keep_key_pattern
            keep_record = record.select { |k2, _| k2 =~ @keep_key_pattern }
            unless keep_record.empty?
              new_record = keep_record.merge(new_record)
            end
          end
          new_es.add(time, new_record)
        end
      end
    rescue => e
      router.emit_error_event(tag, time, record, e)
    end
  end
  new_es
end