Include monotonically increasing value in logstash field?

Question

I know there\'s no built in \"line count\" functionality while processing files through logstash (for various, understandable and documented reasons). But - there should be

Answer 1

this is another choice to slove the problem,this work for me,thanks to the answer from the previous person about thread safe. i use seq field to sort my desc

this is my configure

logstash.conf

filter {
  ruby {
    code => 'event.set("seq", Time.now.strftime("%N").to_i)'           
        }
}

logstash.yml

pipeline.batch.size: 200
pipeline.batch.delay: 60
pipeline.workers: 1
pipeline.output.workers: 1