Class: Fluent::SuppressOutput

Inherits:
Output
  • Object
show all
Includes:
HandleTagNameMixin
Defined in:
lib/fluent/plugin/out_suppress.rb

Instance Method Summary collapse

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_suppress.rb', line 16

def configure(conf)
  super

  if ( !@remove_tag_prefix && !@remove_tag_suffix && !@add_tag_prefix && !@add_tag_suffix )
    raise ConfigError, "out_suppress: Set remove_tag_prefix, remove_tag_suffix, add_tag_prefix or add_tag_suffix."
  end

  @keys  = @attr_keys ? @attr_keys.split(/ *, */) : nil
  @slots = {}
end

#emit(tag, es, chain) ⇒ Object 



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

def emit(tag, es, chain)
  es.each do |time, record|
    if @keys
      keys = @keys.map do |key|
        key.split(/\./).inject(record) {|r, k| r[k] }
      end
      key = tag + "\0" + keys.join("\0")
    else
      key = tag
    end
    slot = @slots[key] ||= []

    # expire old records time
    expired = time.to_f - @interval
    while slot.first && (slot.first <= expired)
      slot.shift
    end

    if slot.length >= @num
      log.debug "suppressed record: #{record.to_json}"
      next
    end

    slot.push(time.to_f)
    _tag = tag.clone
    filter_record(_tag, time, record)
    if tag != _tag
      Engine.emit(_tag, time, record)
    else
      log.warn "Drop record #{record} tag '#{tag}' was not replaced. Can't emit record, cause infinity looping. Set remove_tag_prefix, remove_tag_suffix, add_tag_prefix or add_tag_suffix correctly."
    end
  end

  chain.next
end

#shutdown ⇒ Object 



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# File 'lib/fluent/plugin/out_suppress.rb', line 31

def shutdown
  super
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/out_suppress.rb', line 27

def start
  super
end