Text based log format, need help in parsing

Elastic Stack Logstash
3 
msg = event.get("message")
        matches = msg.scan(/^([A-Za-z]+):(.*)/)
        m = matches[0]
        @@data[m[0]] = m[1]

The above code seems to be working fine when I run it separately. Also I removed

else if [message] =~ /^[ 0-9]+/ {
mutate { strip => [ "message" ] }
grok { match => { "message" => '^[0-9]{1,}[.][ +](?<key>[^:]+):\s*%{GREEDYDATA:value}' } }
ruby {
    code => '
        @@data[key] = value
    '
}
drop{}

}
from the filter, still I get the same issue.