Some suggestions to make this log message more detailed:

1. Do this log after you make the child report (line 335) so that you can set childReportId to an actual value
2. (optional) You can access the processedItem var here, so add the tracking id of the item to this log message: processedItem.getTrackingId().

Good catch. Changes made.

This can be simplified to: item.bundle!!.getRSMessageType() == RSMessageType.LAB_RESULT

Yup.

comment not needed, the code is clear enough. Try to use comments to explain the "why" not the "what". In this case, no comment is needed imo.

Cleaned it up.

Why do we need this exact log message again?

This came out of the conversation we had when we were reviewing the code previously. The gist of the conversation was that you thought we should capture every time the message was modified in some way.

But we already have a log for when a transform is applied? FHIRConverter line 342

Removed.

Have we tried moving the logic here into getRSMessageType? I think that would be cleaner, mostly because the code in this method that reads the message header value is going to be reused by test orders as well as other message types probably, right? I don't see the value of an isELR method.

My thought on this is that, if we intend to add several potential groupings (i.e., enums in RSMessageType), then getRSMessageType would become quite large. Keeping just meaningful function names related to the message grouping type makes the switch statement clearer in my opinion. Additionally, there is an old programming rule of thumb that goes something like "no subroutine should be longer than one screen in length". This, obviously, is rather vague but speaks to keeping code segments small to increase "understandability". You'll often see this argument backed by references like The Magic Number Seven, Plus or Minus Two.

Sure, I just think in practice in this case this won't be longer than a page etc and the downside is you'll be copy pasting this function most likely and just changing the if check in it (violating the DRY principal). That said, there is no repeated code right now, so I'll leave this as a "nit" and we can refactor if needed when we expand if you'd like.

If you update this method per my suggestion above, you can just do this instead:

event is Coding && ((event.code == "R01") || (event.code == "ORU_R01")) -> return RSMessageType.LAB_RESULT

See my comment about your suggestion above.

Please delete

Removed.

kotlin tip: when expressions return values so you can omit your returns in each branch and return the whole expression.

return when {
    isElr() -> RSMessageType.LAB_RESULT
    else -> RSMessageType.UNKNOWN
}

The Gradle build fails when your suggested change is made.

> Task :prime-router:compileKotlin FAILED
e: file:///Users/bill/projects/report-stream/prime-reportstream/prime-router/src/main/kotlin/fhirengine/utils/FHIRBundleHelpers.kt:151:1 A 'return' expression required in a function with a block body ('{...}')

Oops my mistake, apologies. Made the change as requested.

nit: you can just return this expression rather using the mutable isElr variable.

and you can also skip the null check since null == "RO1 will be false as well

Noice! Made the change.