Fix #640 Lower the level of "Could not find a non-optional class for key ..." message
diff --git a/extensions/core/runtime/src/main/java/org/apache/camel/quarkus/core/FastFactoryFinderResolver.java b/extensions/core/runtime/src/main/java/org/apache/camel/quarkus/core/FastFactoryFinderResolver.java
index 0c8f7db..2b41b3e 100644
--- a/extensions/core/runtime/src/main/java/org/apache/camel/quarkus/core/FastFactoryFinderResolver.java
+++ b/extensions/core/runtime/src/main/java/org/apache/camel/quarkus/core/FastFactoryFinderResolver.java
@@ -118,9 +118,7 @@
         public Optional<Class<?>> findClass(String key, String propertyPrefix) {
             final String mapKey = mapKey(path, propertyPrefix, key);
             final Class<?> cl = classMap.get(mapKey);
-            if (cl == null) {
-                LOG.warnf("Could not find a non-optional class for key %s", mapKey);
-            }
+            LOG.tracef("Found a non-optional class for key %s: %s", mapKey, cl == null ? "null" : cl.getName());
             return Optional.ofNullable(cl);
         }
 
@@ -133,8 +131,9 @@
         @Override
         public Optional<Class<?>> findOptionalClass(String key, String propertyPrefix) {
             final String mapKey = mapKey(path, propertyPrefix, key);
-            LOG.tracef("Found an optional class for key %s: %s", mapKey);
-            return Optional.ofNullable(classMap.get(mapKey));
+            final Class<?> cl = classMap.get(mapKey);
+            LOG.tracef("Found an optional class for key %s: %s", mapKey, cl == null ? "null" : cl.getName());
+            return Optional.ofNullable(cl);
         }
 
         private Object doNewInstance(String key, String propertyPrefix) {