Class: Fluent::ParserFilter

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ParserFilter

Returns a new instance of ParserFilter.



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

def initialize
  super
  require 'time'
end

Instance Attribute Details

#parser ⇒ Object (readonly)

Returns the value of attribute parser.



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# File 'lib/fluent/plugin/filter_parser.rb', line 15

def parser
  @parser
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/filter_parser.rb', line 22

def configure(conf)
  super

  @parser = Fluent::TextParser.new
  @parser.estimate_current_event = false
  @parser.configure(conf)
  if !@time_parse && @parser.parser.respond_to?("time_key=".to_sym)
    # disable parse time
    @parser.parser.time_key = nil
  end

  self
end

#filter_stream(tag, es) ⇒ Object 



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# File 'lib/fluent/plugin/filter_parser.rb', line 36

def filter_stream(tag, es)
  new_es = Fluent::MultiEventStream.new
  es.each do |time,record|
    raw_value = record[@key_name]
    if raw_value.nil?
      log.warn "#{@key_name} does not exist" unless @ignore_key_not_exist
      new_es.add(time, handle_parsed(tag, record, time, {})) if @reserve_data
      next
    end
    begin
      @parser.parse(raw_value) do |t,values|
        if values
          t ||= time
          r = handle_parsed(tag, record, t, values)
          new_es.add(t, r)
        else
          log.warn "pattern not match with data '#{raw_value}'" unless @suppress_parse_error_log
          if @reserve_data
            t = time
            r = handle_parsed(tag, record, time, {})
            new_es.add(t, r)
          end
        end
      end
    rescue Fluent::TextParser::ParserError => e
      log.warn e.message unless @suppress_parse_error_log
    rescue ArgumentError => e
      if @replace_invalid_sequence
        unless e.message.index("invalid byte sequence in") == 0
          raise
        end
        replaced_string = replace_invalid_byte(raw_value)
        @parser.parse(replaced_string) do |t,values|
          if values
            t ||= time
            r = handle_parsed(tag, record, t, values)
            new_es.add(t, r)
          else
            log.warn "pattern not match with data '#{raw_value}'" unless @suppress_parse_error_log
            if @reserve_data
              t = time
              r = handle_parsed(tag, record, time, {})
              new_es.add(t, r)
            end
          end
        end
      else
        raise
      end
    rescue => e
      log.warn "parse failed #{e.message}" unless @suppress_parse_error_log
    end
  end
  new_es
end