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.streams;
  
  import org.apache.kafka.common.Uuid;
  
  import java.util.Map;
  
  /**
   * Encapsulates the {@code client instance id} used for metrics collection by
   * producers, consumers, and the admin client used by Kafka Streams.
   */
  public interface ClientInstanceIds {
      /**
       * Returns the {@code client instance id} of the admin client.
       *
       * @return the {@code client instance id} of the admin client
       *
       * @throws IllegalStateException If telemetry is disabled on the admin client.
       */
      @SuppressWarnings("unused")
      Uuid adminInstanceId();
  
      /**
       * Returns the {@code client instance id} of the consumers.
       *
       * @return a map from thread key to {@code client instance id}
       */
      @SuppressWarnings("unused")
      Map<String, Uuid> consumerInstanceIds();
  
      /**
       * Returns the {@code client instance id} of the producers.
       *
       * @return a map from thread key to {@code client instance id}
       */
      @SuppressWarnings("unused")
      Map<String, Uuid> producerInstanceIds();
  }