content: /*
   * 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.shell.state;
  
  import org.apache.kafka.image.MetadataDelta;
  import org.apache.kafka.image.MetadataImage;
  import org.apache.kafka.image.loader.LoaderManifest;
  import org.apache.kafka.image.publisher.MetadataPublisher;
  import org.apache.kafka.shell.node.RootShellNode;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Publishes changes to the Kafka Metadata Shell.
   */
  public class MetadataShellPublisher implements MetadataPublisher {
      private static final Logger log = LoggerFactory.getLogger(MetadataShellPublisher.class);
  
      private final MetadataShellState state;
  
      public MetadataShellPublisher(MetadataShellState state) {
          this.state = state;
      }
  
      @Override
      public String name() {
          return "MetadataShellPublisher";
      }
  
      @Override
      public void onMetadataUpdate(
          MetadataDelta delta,
          MetadataImage newImage,
          LoaderManifest manifest
      ) {
          log.trace("onMetadataUpdate newImage={}", newImage);
          state.setRoot(new RootShellNode(newImage));
      }
  
      public MetadataShellState state() {
          return state;
      }
  }
  