ext/common/UnionStation/Core.h in passenger-4.0.45 vs ext/common/UnionStation/Core.h in passenger-4.0.46

@@ -379,10 +379,13 @@
 		unsigned int nparams = sizeof(params) / sizeof(StaticString);
 
 		// Get a connection to the logging server.
 		ConnectionPtr connection = checkoutConnection();
 		if (connection == NULL) {
+			P_TRACE(2, "Created NULL Union Station transaction: group=" << groupName <<
+				", category=" << category << ", txnId=" <<
+				StaticString(txnId, txnIdEnd - txnId));
 			return createNullTransaction();
 		}
 
 		// Send request, process reply.
 		if (sendRequest(connection, params, nparams, true)) {
@@ -393,11 +396,17 @@
 				string(txnId, txnIdEnd - txnId),
 				groupName,
 				category,
 				unionStationKey);
 			guard.clear();
+			P_TRACE(2, "Created new Union Station transaction: group=" << groupName <<
+				", category=" << category << ", txnId=" <<
+				StaticString(txnId, txnIdEnd - txnId));
 			return transaction;
 		} else {
+			P_TRACE(2, "Created NULL Union Station transaction: group=" << groupName <<
+				", category=" << category << ", txnId=" <<
+				StaticString(txnId, txnIdEnd - txnId));
 			return createNullTransaction();
 		}
 	}
 
 	TransactionPtr continueTransaction(const string &txnId,