Unexpected tCONSTANT in Ruby Script

Elastic Stack Logstash
1

We have a ton (200+) of applications that are all logging to the same index. Because of this, we are seeing a few field type collisions that cause messages to get bounced (to the tune of approximately 26 million bounced events per day).

I put together a quick ruby script in our main processing pipeline to handle these fields:

ruby {
    code => '
        fields = ["container", "destination", "host", "process", "source", "url", "user"]

        fields.each { |f|
            if event.include? f && event.get(f).is_a? String
                event.set(f + "_val", event.get(f))
                event.remove(f)
            end
        }
    '
}

However, I'm getting the error:

(ruby filter code):6: syntax error, unexpected tCONSTANT\n...f && event.get(f).is_a? String\r\n

I'm sure this is something simple, but the black-box that is developing and debugging logstash pipelines has made it difficult for me, as I have a limited grasp of Ruby.

Can someone help out?

2

Try

        if event.include? f and event.get(f).is_a? String
            event.set(f + "_val", event.remove(f))
        end
1 Like
3

That worked! You are my hero

4

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