Class: Fluent::URIDecoder

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

Instance Method Summary collapse

Constructor Details

#initialize ⇒ URIDecoder

Returns a new instance of URIDecoder.



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# File 'lib/fluent/plugin/out_uri_decode.rb', line 10

def initialize
  super
  require 'uri'
end

Instance Method Details

#configure(conf) ⇒ Object 



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

def configure(conf)
  super

  if !@remove_prefix && !@add_prefix && !@tag
    raise Fluent::ConfigError, "missing both of remove_prefix and add_prefix"
  end
  if @tag && @remove_prefix && @add_prefix
    raise Fluent::ConfigError, "either 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
end

#emit(tag, es, chain) ⇒ Object 



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# File 'lib/fluent/plugin/out_uri_decode.rb', line 53

def emit(tag, es, chain)
  tag = tag_mangle(tag)

  @_key_names ||= @key_names.split(/,\s*/)
  @_key_names << @key_name if @key_name
  @_key_names.uniq!

  es.each do |time, record|
    @_key_names.each do |key_name|
      record[key_name] = URI.decode_www_form_component(record[key_name] || '')
    end

    router.emit(tag, time, record)
  end

  chain.next
end

#tag_mangle(tag) ⇒ Object 



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# File 'lib/fluent/plugin/out_uri_decode.rb', line 33

def tag_mangle(tag)
  if @tag
    @tag
  else
    if @remove_prefix and
       (tag == @remove_prefix || tag.start_with?(@removed_prefix_string) && tag.length > @removed_length)
      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
end