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.trogdor.common;
  
  import org.apache.kafka.trogdor.agent.Agent;
  import org.apache.kafka.trogdor.coordinator.Coordinator;
  
  import java.util.Set;
  
  /**
   * Defines a node in a cluster topology
   */
  public interface Node {
      class Util {
          public static int getIntConfig(Node node, String key, int defaultVal) {
              String val = node.getConfig(key);
              if (val == null) {
                  return defaultVal;
              } else {
                  return Integer.parseInt(val);
              }
          }
  
          public static int getTrogdorAgentPort(Node node) {
              return getIntConfig(node, Platform.Config.TROGDOR_AGENT_PORT, Agent.DEFAULT_PORT);
          }
  
          public static int getTrogdorCoordinatorPort(Node node) {
              return getIntConfig(node, Platform.Config.TROGDOR_COORDINATOR_PORT, Coordinator.DEFAULT_PORT);
          }
      }
  
      /**
       * Get name for this node.
       */
      String name();
  
      /**
       * Get hostname for this node.
       */
      String hostname();
  
      /**
       * Get the configuration value associated with the key, or null if there
       * is none.
       */
      String getConfig(String key);
  
      /**
       * Get the tags for this node.
       */
      Set<String> tags();
  }
  