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 14

def initialize
  super
  require 'time'
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_parser.rb', line 19

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 40

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
  if @reserve_data
    es.each {|time,record|
      value = record[@key_name]
      t,values = if value
                   parse(value)
                 else
                   [nil, nil]
                 end
      t ||= time
      r = if values
            if @inject_key_prefix
              values = Hash[values.map{|k,v| [ @inject_key_prefix + k, v ]}]
            end
            record.merge(values)
          else
            record
          end
      Fluent::Engine.emit(tag, t, r)
    }
  else
    es.each {|time,record|
      value = record[@key_name]
      t,values = if value
                   parsed = parse(value)
                   if @inject_key_prefix
                     parsed = Hash[parsed.map{|k,v| [ @inject_key_prefix + k, v ]}]
                   end
                   parsed
                 else
                   [nil, nil]
                 end
      t ||= time
      if values
        Fluent::Engine.emit(tag, t, values)
      end
    }
  end
  chain.next
end