cmccabe commented on code in PR #13686:
URL: https://github.com/apache/kafka/pull/13686#discussion_r1190440507


##########
metadata/src/main/java/org/apache/kafka/image/node/ConfigurationImageNode.java:
##########
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.kafka.image.node;
+
+import org.apache.kafka.image.ConfigurationImage;
+import org.apache.kafka.image.node.printer.MetadataNodePrinter;
+
+import java.util.Collection;
+
+
+public class ConfigurationImageNode implements MetadataNode {
+    /**
+     * The configuration image for a specific resource.
+     */
+    private final ConfigurationImage image;
+
+    public ConfigurationImageNode(ConfigurationImage image) {
+        this.image = image;
+    }
+
+    @Override
+    public Collection<String> childNames() {
+        return image.data().keySet();
+    }
+
+    @Override
+    public MetadataNode child(String name) {
+        String value = image.data().get(name);
+        if (value == null) return null;
+        return new MetadataNode() {
+            @Override
+            public boolean isDirectory() {
+                return false;
+            }
+
+            @Override
+            public void print(MetadataNodePrinter printer) {
+                if (printer.redactionCriteria().

Review Comment:
   added



##########
metadata/src/main/java/org/apache/kafka/image/node/printer/MetadataNodeRedactionCriteria.java:
##########
@@ -0,0 +1,85 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.kafka.image.node.printer;
+
+import org.apache.kafka.common.config.ConfigResource;
+import org.apache.kafka.metadata.KafkaConfigSchema;
+
+
+public interface MetadataNodeRedactionCriteria {
+    /**
+     * Returns true if SCRAM data should be redacted.
+     */
+    boolean shouldRedactScram();
+
+    /**
+     * Returns true if a configuration should be redacted.
+     *
+     * @param type      The configuration type.
+     * @param key       The configuration key.
+     *
+     * @return          True if the configuration should be redacted.
+     */
+    boolean shouldRedactConfig(ConfigResource.Type type, String key);
+
+    class Strict implements MetadataNodeRedactionCriteria {

Review Comment:
   added



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