Initializing a new grok filter from ruby filter

Elastic Stack Logstash
3

Thanks, I was testing different aspects of this case, so it took time to post the reply here.
Any way, here's the summarized method from what @Badger mentioned in previous post; to initiate and use grok filter plugin (or any other filter generally):

init section:

  1. initialize
@grok_filter = LogStash::Filters::Grok.new(
        "match" => { "message" =>  "PATTERN" },
        "tag_on_failure" => ["_grokparsefailure"]
#        .... and literally any other config option you'd pass into grok plugin in filter pipeline
  )
  1. Register
    @grok_filter.register

code section:

  1. Utilize
    @grok_filter.filter(event)

However, I faced a relevant new issue which will post in another topic. Thank you @Badger