mimaison commented on code in PR #14756:
URL: https://github.com/apache/kafka/pull/14756#discussion_r1394485129


##########
clients/src/main/java/org/apache/kafka/common/security/ssl/SslFactory.java:
##########
@@ -185,6 +188,18 @@ private SslEngineFactory 
createNewSslEngineFactory(Map<String, ?> newConfigs) {
         }
     }
 
+    private static boolean getBoolean(final Map<String, Object> configs, final 
String key, final boolean defaultValue) {
+        final Object value = configs.getOrDefault(key, defaultValue);
+        if (value instanceof Boolean) {
+            return (boolean) value;
+        } else if (value instanceof String) {
+            return Boolean.parseBoolean((String) value);
+        } else {
+            log.warn("Invalid value (" + value + ") on internal configuration 
'" + key + "'. Please specify a true/false value.");

Review Comment:
   Can we remove `internal` from this message since these 2 settings are part 
of the public configuration? I'm guessing you copied that method from 
`StreamsConfig`.
   I also don't think this `else` block is reachable in practice as 
AbstractConfig should have validated the types beforehand but it's ok to keep 
the warning.



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