From 889eeeda9061008d27ec52ee384d2665612f9f85 Mon Sep 17 00:00:00 2001
From: Marco Vogt <marco.vogt@unibas.ch>
Date: Tue, 7 Dec 2021 09:18:59 +0100
Subject: [PATCH] Add log message when enabling and disabling post cost
 aggregation

---
 .../org/polypheny/db/routing/RoutingManager.java    | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/dbms/src/main/java/org/polypheny/db/routing/RoutingManager.java b/dbms/src/main/java/org/polypheny/db/routing/RoutingManager.java
index d567063603..f9c369c080 100644
--- a/dbms/src/main/java/org/polypheny/db/routing/RoutingManager.java
+++ b/dbms/src/main/java/org/polypheny/db/routing/RoutingManager.java
@@ -139,6 +139,19 @@ public void restart( Config c ) {
         PLAN_SELECTION_STRATEGY.withUi( routingGroup.getId(), 2 );
 
         configManager.registerConfig( POST_COST_AGGREGATION_ACTIVE );
+        POST_COST_AGGREGATION_ACTIVE.addObserver( new ConfigListener() {
+            @Override
+            public void onConfigChange( Config c ) {
+                String status = c.getBoolean() ? "Enabled" : "Disabled";
+                log.warn( "{} post cost aggregation", status );
+            }
+
+
+            @Override
+            public void restart( Config c ) {
+
+            }
+        } );
         POST_COST_AGGREGATION_ACTIVE.withUi( routingGroup.getId(), 3 );
     }