[rules-users] Any API accessing to the rule logic instead of only Facts

Does anyone know a public Drools API that we can use to access to the actual rule logic in a structured way? Current we can use AgendaEventListener and WorkingMemoryEventListener to access the facts using in LHS and the objects used in RHS. But my project has some special requirements which need to access the actual rule logic on LHS for auditing and justification purpose. For example, if a rule is like this: when fact.list contains "123" then do something. When this rule is fired, not only do I need to know what the fact object is, I also need to know the condition of this rule is involved a "contains" API, with value "123". Thanks in advance. Sean