Class: Fluent::Plugin::StringScrubFilter

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

Instance Method Summary collapse

Constructor Details

#initialize ⇒ StringScrubFilter

Returns a new instance of StringScrubFilter.



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# File 'lib/fluent/plugin/filter_string_scrub.rb', line 8

def initialize
  super
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/filter_string_scrub.rb', line 12

def configure(conf)
  super

  if @replace_char =~ /\\u\{*[A-F0-9]{4}\}*/
    @replace_char = eval("\"#{@replace_char}\"")
  end
end

#filter_stream(tag, es) ⇒ Object 



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

def filter_stream(tag, es)
  new_es = Fluent::MultiEventStream.new
  es.each do |time,record|
    begin
      scrubbed = recv_record(record)
      next if scrubbed.nil?
      new_es.add(time, scrubbed)
    rescue => e
      router.emit_error_event(tag, time, record, e)
    end
  end

  new_es
end

#recv_record(record) ⇒ Object 



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# File 'lib/fluent/plugin/filter_string_scrub.rb', line 35

def recv_record(record)
  scrubbed = {}
  record.each do |k,v|
    if v.instance_of? Hash
      scrubbed[with_scrub(k)] = recv_record(v)
    elsif v.instance_of? Integer
      scrubbed[k] = v
    else
      scrubbed[with_scrub(k)] = with_scrub(v)
    end
  end
  scrubbed
end

#with_scrub(string) ⇒ Object 



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# File 'lib/fluent/plugin/filter_string_scrub.rb', line 49

def with_scrub(string)
  begin
    string =~ //
    return string
  rescue ArgumentError => e
    raise e unless e.message.index("invalid byte sequence in") == 0
    if string.frozen?
        string = string.dup.scrub!(@replace_char)
    else
        string.scrub!(@replace_char)
    end
    retry
  end
end