Class: Fluent::SendmailInput

Inherits:
TailInput
  • Object
show all
Defined in:
lib/fluent/plugin/in_sendmail.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SendmailInput

Returns a new instance of SendmailInput.



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# File 'lib/fluent/plugin/in_sendmail.rb', line 14

def initialize
  super
  @delivers = LruRedux::ThreadSafeCache.new(@lrucache_size)
end

Instance Method Details

#configure_parser(conf) ⇒ Object 



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

def configure_parser(conf)
  @parser = SendmailParser.new(conf)
  if @unbundle == 'yes'
    @do_unbundle = true
  else
    @do_unbundle = false
  end
end

#log_bundled(es, deliveryid, time) ⇒ Object 



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# File 'lib/fluent/plugin/in_sendmail.rb', line 111

def log_bundled(es, deliveryid, time)
  log = @delivers[deliveryid]
  es.add(time, log.record)
end

#log_single(es, deliveryid, time, record) ⇒ Object 



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# File 'lib/fluent/plugin/in_sendmail.rb', line 103

def log_single(es, deliveryid, time, record)
  log = @delivers[deliveryid]
  records = log.record_unbundle(time, record)
  for record in records do
    es.add(time, record)
  end
end

#receive_lines(lines) ⇒ Object 



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# File 'lib/fluent/plugin/in_sendmail.rb', line 28

def receive_lines(lines)
  es = Fluent::MultiEventStream.new
  lines.each {|line|
    begin
      line.chomp!  # remove \n
      logline = parse_line(line)

      if logline.nil?
        next
      end

      type   = logline["type"]
      mta    = logline["mta"]
      qid    = logline["qid"]
      time   = logline["time"]
      # a qid is not uniq worldwide.
      # make delivery id uniq even if multiple MTA's log are mixed. 
      deliveryid = mta + qid
      type   = logline["type"]
      noncommon = logline["noncommon"]

      case type
      when :from
        # new log
        from = noncommon
        record = from.record
        @delivers[deliveryid] = SendmailLog.new(mta, time, record)
      when :to
        to = noncommon
        status = to.status
        record = noncommon.record
        if @delivers.has_key?(deliveryid)
          to = noncommon
          status = to.status
          case status
          when :sent, :sent_local, :bounced
            @delivers[deliveryid].dequeued(time, record)
            if @do_unbundle
              log_single(es, deliveryid, time, record)
            end
            # bulked queue in an attempt have been dequeued completely.
            if @delivers[deliveryid].status == :all_dequeued
              # bundled logs are outputed here
              if not @do_unbundle
                log_bundled(es, deliveryid, time)
              end
              # log.destroy
              @delivers.delete(qid)
            end
          when :deferred
            if @do_unbundle
              log_single(es, deliveryid, time, record)
            end
          when :other
            $log.warn "cannot find this kind of delivery status: " + line.dump
          end
        else
          # cannot find any 'from' line corresponded to the 'to' line
        end
      end
    rescue
      $log.warn line.dump, :error=>$!.to_s
      $log.debug_backtrace
    end
  }

  unless es.empty?
    begin
      Fluent::Engine.emit_stream(@tag, es)
    rescue
      # ignore errors. Engine shows logs and backtraces.
    end
  end
end