Hello, Newbie here. I'm trying to add a field to hold the string length of another field in my input. I want to visualize the string lengths (to show average email message sizes by user for example). I have tried the following but it puts "%{contents.length}" into the contentLength field. mutate …

Adding field for string length

magnusbaeck (Magnus Bäck) August 25, 2016, 4:53pm 2

Use a ruby filter:

ruby {
  code => "event['contentLength'] = event['contents'].length"
}

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Adding field for string length

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