Class: Fluent::Plugin::LogzioOutputBuffered

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

Instance Method Summary collapse

Instance Method Details

#compress(string) ⇒ Object 



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# File 'lib/fluent/plugin/out_logzio_buffered.rb', line 175

def compress(string)
  wio = StringIO.new("w")
  w_gz = Zlib::GzipWriter.new(wio)
  w_gz.write(string)
  w_gz.close
  wio.string
end

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_logzio_buffered.rb', line 25

def configure(conf)
  super
  compat_parameters_convert(conf, :buffer)

  log.debug "Logz.io URL #{@endpoint_url}"

  if conf['proxy_uri']
    log.debug "Proxy #{@proxy_uri}"
    ENV['http_proxy'] = @proxy_uri
  end

  if conf['proxy_cert']
    log.debug "Proxy #{@proxy_cert}"
    ENV['SSL_CERT_FILE'] = @proxy_cert
  end

end

#encode_chunk(chunk) ⇒ Object 



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# File 'lib/fluent/plugin/out_logzio_buffered.rb', line 85

def encode_chunk(chunk)
  records = []
  bulk_size = 0
  chunk.each { |tag, time, record|
    record['@timestamp'] ||= Time.at(time).iso8601(3) if @output_include_time
    record[@output_tags_fieldname] ||= tag.to_s if @output_include_tags

    begin
      json_record = Yajl.dump(record)
      record_size = json_record.size + (1 if !records.empty?).to_i # Accounting for trailing "\n"
    rescue
      log.error "Adding record #{record} to buffer failed. Exception: #{$!}"
      next
    end

    if record_size > @bulk_limit
      if @bulk_limit_warning_limit.is_a?(Integer)
        log.warn "Record with size #{record_size} exceeds #{@bulk_limit} and can't be sent to Logz.io. Record starts with (truncated at #{@bulk_limit_warning_limit} characters): #{json_record[0,@bulk_limit_warning_limit]}"
        # Send the full message to debug facility
        log.debug "Record with size #{record_size} exceeds #{@bulk_limit} and can't be sent to Logz.io. Record is: #{json_record}"
      else
        log.warn "Record with size #{record_size} exceeds #{@bulk_limit} and can't be sent to Logz.io. Record is: #{json_record}"
      end
      next
    end
    if bulk_size + record_size > @bulk_limit
      yield(records, bulk_size)
      records = []
      bulk_size = 0
    end
    records.push(json_record)
    bulk_size += record_size
  }
  if records
    yield(records, bulk_size)
  end
end

#format(tag, time, record) ⇒ Object 



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# File 'lib/fluent/plugin/out_logzio_buffered.rb', line 70

def format(tag, time, record)
  if time.is_a?(Fluent::EventTime)
    sec_frac = time.to_f
  else
    sec_frac = time * 1.0
  end
  [tag, sec_frac, record].to_msgpack
end

#formatted_to_msgpack_binary? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluent/plugin/out_logzio_buffered.rb', line 62

def formatted_to_msgpack_binary?
  true
end

#multi_workers_ready? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluent/plugin/out_logzio_buffered.rb', line 66

def multi_workers_ready?
  true
end

#send_bulk(bulk_records, bulk_size) ⇒ Object 



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# File 'lib/fluent/plugin/out_logzio_buffered.rb', line 123

def send_bulk(bulk_records, bulk_size)
  log.debug "Sending a bulk of #{bulk_records.size} records, size #{bulk_size}B to Logz.io"

  # Setting our request
  post = Net::HTTP::Post.new @uri.request_uri

  # Logz.io bulk http endpoint expecting log line with \n delimiter
  post.body = bulk_records.join("\n")
  if gzip
    post.body = compress(post.body)
  end
  sleep_interval = @retry_sleep

  begin
    @retry_count.times do |counter|
      should_retry = true
      begin
        response = @http.request @uri, post
        if response.code != '200'
          if response.code == '401'
            log.error "You are not authorized with Logz.io! Token OK? dropping logs..."
            should_retry = false
          elsif response.code == '400'
            log.info "Got 400 code from Logz.io. This means that some of your logs are too big, or badly formatted. Response: #{response.body}"
            should_retry = false
          else
            log.warn "Got HTTP #{response.code} from Logz.io, not giving up just yet (Try #{counter + 1}/#{@retry_count})"
          end
        else
          log.debug "Successfully sent bulk of #{bulk_records.size} records, size #{bulk_size}B to Logz.io"
          should_retry = false
        end
      rescue StandardError => e
        log.warn "Error connecting to Logz.io. Got exception: #{e} (Try #{counter + 1}/#{@retry_count})"
      end

      if should_retry
        if counter == @retry_count - 1
          log.error "Could not send your bulk after #{retry_count} tries Sorry! Your bulk is: #{post.body}"
          break
        end
        sleep(sleep_interval)
        sleep_interval *= 2
      else
        return
      end
    end
  rescue Exception => e
    log.error "Got unexpected exception! Here: #{e}"
  end
end

#shutdown ⇒ Object 



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# File 'lib/fluent/plugin/out_logzio_buffered.rb', line 58

def shutdown
  super
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/out_logzio_buffered.rb', line 43

def start
  super
  require 'net/http/persistent'
  @uri = URI @endpoint_url
  @http = Net::HTTP::Persistent.new name: 'fluent-plugin-logzio', proxy: :ENV
  @http.headers['Content-Type'] = 'text/plain'
  if @gzip
    @http.headers['Content-Encoding'] = 'gzip'
  end
  @http.idle_timeout = @http_idle_timeout
  @http.socket_options << [Socket::SOL_SOCKET, Socket::SO_KEEPALIVE, 1]

  log.debug "Started Logz.io shipper.."
end

#write(chunk) ⇒ Object 



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# File 'lib/fluent/plugin/out_logzio_buffered.rb', line 79

def write(chunk)
  encode_chunk(chunk) { |bulk_records, bulk_size|
    send_bulk(bulk_records, bulk_size)
  }
end