[SOLVED] Logstash 5.2.2 - Mutate string value to number

Elastic Stack Logstash
2

It was bad syntax on mutate.

According to [SOLVED] The filter plugin mutate-convert doesn't work in 5.0, the syntax should be:

filter {
	if "TimeSince" in [metric_path] or "Delay" in [metric_path] {
		mutate { add_field => { "time_in_seconds" => "%{metric_value_string}"} }
		mutate { gsub => ["time_in_seconds", ".0 secs", ""] }
		mutate { convert => ["time_in_seconds", "integer"] }
	}
}

instead of

filter {
    if "TimeSince" in [metric_path] or "Delay" in [metric_path] {
        mutate { add_field => { "time_in_seconds" => "%{metric_value_string}"} }
        mutate { gsub => ["time_in_seconds", ".0 secs", ""] }
        mutate { convert => { "time_in_seconds", "integer" } }
    }
}

The incorrect syntax is listed here @ https://www.elastic.co/guide/en/logstash/current/plugins-filters-mutate.html#plugins-filters-mutate-convert