Get count of lines in a multiline message field

[Pavani_Reddy (Pavani)]

Hi Team,

I have a message field with multiline i.e
Exception in thread "main" java.lang.IllegalStateException: A book has a null property\n\tat com.example.myproject.Author.getBookIds(Author.java:38)
\n\tat com.example.myproject.Bootstrap.main(Bootstrap.java:14)\nCaused by: java.lang.NullPointerException\n\tat com.example.myproject.Book.getId(Book.java:22)\n\tat com.example.myproject.Author.getBookIds(Author.java:35)

In this message there are 6 lines

I used following ruby code in logstash filter

ruby {
code => 'event.set("numLines", 1 + event.get("message").count("\n"))'
}

This giving count as '1' not the actual number of lines.

Please, Can anyone help me!

[Badger]

See here. You want to count the number of newlines, not the number of occurences of the string backslash-n.

[Pavani_Reddy (Pavani)]

Hi @Badger ,

How can get count of number of newlines, Please give some input .

ruby {
code => 'event.set("numLines", 1 +event.get("message").count(" "))'
}

I tried the above code, with this code I am getting count spaces in a message , not lines.

ruby {
code => 'event.set("numLines", 1 +event.get("message").count("
"))'
}

Tried this one, it gives 1 as output value.

Thanks in advance.