Cannot use strftime in codecs

Florin_Andrei · January 30, 2016, 12:18am

logstash-2.1.1

I am trying to use this codec to forward logs to a different app, using the tcp output plugin:

vmadman/logstash/blob/6ecf54b9cb1272a2338c397c1d88b6235b8619fd/lib/logstash/codecs/logio.rb

# encoding: utf-8
require "logstash/codecs/base"

#
# Log.io Codec Plugin for Logstash (http://logstash.net)
# Author: Luke Chavers <github.com/vmadman>
# Created: 11/22/2013
# Current Logstash: 1.2.2
#
# To the extent possible under law, Luke Chavers has waived all copyright and related
# or neighboring rights to this work.  You are free to distribute, modify, and use
# this work without permission of any kind.  Attribution is appreciated, but is not required.
#
# This codec formats events for output to Log.io, a log stream viewer
# built on Node.JS (http://logio.org/). Log.io is Copyright 2011-2013 Narrative Science Inc.
# and is released under the Apache 2.0 license. (http://www.apache.org/licenses/LICENSE-2.0.html)
#
#     output {
#      tcp {
#       codec => logio {

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This is the output config:

  tcp {
    codec => logio {
      debug_output => "true"
    }
    host => "127.0.0.1"
    port => 28777
  }

But when I run logstash, it throws this error:

NoMethodError: undefined method `strftime' for "2016-01-29T19:49:47.856Z":LogStash::Timestamp
         encode at /opt/logstash-plugins/logstash/codecs/logio.rb:158
        receive at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-tcp-2.0.2/lib/logstash/outputs/tcp.rb:143
         handle at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.1.1-java/lib/logstash/outputs/base.rb:81
    output_func at (eval):274
   outputworker at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.1.1-java/lib/logstash/pipeline.rb:277
  start_outputs at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.1.1-java/lib/logstash/pipeline.rb:194

Obviously strftime doesn't work for some reason, on line 158 in the codec.

I've tried to use sprintf in that context, but it errors out again, saying it's a "private method".

How to format time data in a codec without strftime?