[syslog-ng] Integrating with snmp traps

Hi, Does anybody on this fine list handle SNMP traps using syslog-ng? We used to just forward logs using syslog and snmptrapd as suggested on an old blog post from Baszi. The problem with this approach is that the messages are flat. We would actually like to parse all the key-values from the original payload, anyone done that before? Thanks!