title: logstash - convert hex to ascii
body: <p>I wonder if there is any alternative to <a href="https://libraries.io/rubygems/logstash-filter-hex" rel="nofollow noreferrer">this hex plugin</a>. 
  It's actually a nice and simple plugin but the problem is the latest updates for this plugin dated back to
  2016.</p>
  
  <p>My second question is how to update logstash on Linux while retaining custom plugins such as logstash-filter-hex? Last time the plugin was removed after the package update.</p>