Class: Fluent::ParserOutput

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

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 15

def initialize
  super
  require 'time'
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_parser.rb', line 25

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 = FluentExt::TextParser.new
  @parser.configure(conf)
end

#emit(tag, es, chain) ⇒ Object 



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# File 'lib/fluent/plugin/out_parser.rb', line 46

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]
    t,values = raw_value ? parse(raw_value) : [nil, nil]
    t ||= time

    if values && @inject_key_prefix
      values = Hash[values.map{|k,v| [ @inject_key_prefix + k, v ]}]
    end
    r = @hash_value_field ? {@hash_value_field => values} : values
    if @reserve_data
      r = r ? record.merge(r) : record
    end
    if r
      Fluent::Engine.emit(tag, t, r)
    end
  end

  chain.next
end