NRL-1215 Log when duplicate key in post body

Author: axelkrastek1-nhs

layer/nrlf/core/log_references.py

@@ -36,6 +36,7 @@ class LogReference(Enum):
     HANDLER016 = _Reference("INFO", "Set response headers")
     HANDLER017 = _Reference("WARN", "Correlation ID not found in request headers")
     HANDLER018 = _Reference("INFO", "Checking for duplicate keys in request body")
+    HANDLER019 = _Reference("ERROR", "Duplicate keys found in the request body")
     HANDLER999 = _Reference("INFO", "Request handler returned successfully")
 
     # Error Logs

layer/nrlf/core/request.py

@@ -108,13 +108,15 @@ def raise_when_duplicate_keys(json_content: str) -> None:
     logger.log(LogReference.HANDLER018)
     duplicates, paths = check_duplicate_keys(json_content)
     if duplicates:
-        raise OperationOutcomeError(
+        error = OperationOutcomeError(
             severity="error",
             code="invalid",
             details=SpineErrorConcept.from_code("MESSAGE_NOT_WELL_FORMED"),
             diagnostics=f"Duplicate keys found in FHIR document: {duplicates}",
             expression=paths,
         )
+        logger.log(LogReference.HANDLER019, error=str(error))
+        raise error
 
 
 def parse_path(