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.auron.metric;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Abstract class representing a metric node in the Auron system.
   * This class provides functionality for hierarchical metrics tracking.
   */
  public abstract class MetricNode {
      private final List<MetricNode> children = new ArrayList<>();
  
      public MetricNode(List<MetricNode> children) {
          this.children.addAll(children);
      }
  
      /**
       * Gets a child metric node with the specified ID.
       *
       * @param id The identifier for the child node
       * @return The child MetricNode associated with the given ID
       */
      public MetricNode getChild(int id) {
          return children.get(id);
      }
  
      /**
       * Adds a metric value with a specified name.
       *
       * @param name The name of the metric
       * @param value The value to add for the metric (as a long)
       */
      public abstract void add(String name, long value);
  }
  