[syslog-ng] Inserting text in syslog messages

[Gustavo Mendes de Carvalho]

Dear All,

Does anybody knows how to insert some string in a message that will be
apended in log files ? I mean, imagine that syslog-ng receives this
message to insert in /var/log/auth.log.

Jan 31 13:18:01 host sshd[6278]: Accepted keyboard-interactive/pam for
user from 10.10.0.29 port 49105 ssh2

And I would like to insert some text together, resulting in some like this

Jan 31 13:18:01 host sshd[6278]: Accepted keyboard-interactive/pam for
root from 10.10.0.29 port 49105 ssh2 - service xyz for user root

How can I include this string " - service xyz for user root" ?

I know that it's possible, but I didn't find how to.

Thanks in advance

Gustavo