title: How to do this filter in logstash
body: <p>I have a lof file like below</p>
  
  <p>xxx yyy , abc<br>
   the count is: 100<br>
   xxx yyy , abc    </p>
  
  <p>So how can I get the logstash do to pick and display like "count = 100"</p>
  
  <p>I couldn't figure it out using the logstash documentation.
  EDIT: For simplification, I just reduced the scope of the above problem.</p>