Class: Fluent::ParserOutput

Inherits:
Output
  • Object
show all
Defined in:
lib/fluent/plugin/out_parser.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ParserOutput

Returns a new instance of ParserOutput.



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# File 'lib/fluent/plugin/out_parser.rb', line 20

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/out_parser.rb', line 18

def parser
  @parser
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_parser.rb', line 30

def configure(conf)
  super

  if not @tag and not @remove_prefix and not @add_prefix
    raise Fluent::ConfigError, "missing both of remove_prefix and add_prefix"
  end
  if @tag and (@remove_prefix or @add_prefix)
    raise Fluent::ConfigError, "both of tag and remove_prefix/add_prefix must not be specified"
  end
  if @remove_prefix
    @removed_prefix_string = @remove_prefix + '.'
    @removed_length = @removed_prefix_string.length
  end
  if @add_prefix
    @added_prefix_string = @add_prefix + '.'
  end

  @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

#emit(tag, es, chain) ⇒ Object 



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# File 'lib/fluent/plugin/out_parser.rb', line 58

def emit(tag, es, chain)
  tag = if @tag
          @tag
        else
          if @remove_prefix and
              ( (tag.start_with?(@removed_prefix_string) and tag.length > @removed_length) or tag == @remove_prefix)
            tag = tag[@removed_length..-1]
          end
          if @add_prefix
            tag = if tag and tag.length > 0
                    @added_prefix_string + tag
                  else
                    @add_prefix
                  end
          end
          tag
        end
  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
      handle_parsed(tag, record, time, {}) if @reserve_data
      next
    end
    begin
      @parser.parse(raw_value) do |t,values|
        if values
          t ||= time
          handle_parsed(tag, record, t, values)
        else
          log.warn "pattern not match with data '#{raw_value}'" unless @suppress_parse_error_log
          if @reserve_data
            t = time
            handle_parsed(tag, record, time, {})
          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
            handle_parsed(tag, record, t, values)
          else
            log.warn "pattern not match with data '#{raw_value}'" unless @suppress_parse_error_log
            if @reserve_data
              t = time
              handle_parsed(tag, record, time, {})
            end
          end
        end
      else
        raise
      end
    rescue => e
      log.warn "parse failed #{e.message}" unless @suppress_parse_error_log
    end
  end

  chain.next
end