Change codec instance comparison (#69)

* Switch from instanceof to string comparision to check the type of codec during regitration

* bump to 3.0.6

---------

Co-authored-by: logstashmachine <[email protected]>

Author: andsel

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 3.0.6
+  - Change codec instance comparison [#69](https://github.com/logstash-plugins/logstash-output-syslog/pull/69)
+
 ## 3.0.5
   - Docs: Set the default_codec doc attribute.
 

lib/logstash/outputs/syslog.rb

@@ -132,7 +132,7 @@ def register
       @ssl_context = setup_ssl
     end
 
-    if @codec.instance_of? LogStash::Codecs::Plain
+    if @codec.class.name == "LogStash::Codecs::Plain"
       if @codec.config["format"].nil?
         @codec = LogStash::Codecs::Plain.new({"format" => @message})
       end

logstash-output-syslog.gemspec

@@ -1,7 +1,7 @@
 Gem::Specification.new do |s|
 
   s.name            = 'logstash-output-syslog'
-  s.version         = '3.0.5'
+  s.version         = '3.0.6'
   s.licenses        = ['Apache License (2.0)']
   s.summary         = "Sends events to a `syslog` server"
   s.description     = "This gem is a Logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/logstash-plugin install gemname. This gem is not a stand-alone program"