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.common.test;
  
  import java.util.Set;
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.ThreadFactory;
  import java.util.concurrent.atomic.AtomicLong;
  
  public class KafkaClusterThreadFactory implements ThreadFactory {
      private final String prefix;
      private final Set<Long> threadIds = ConcurrentHashMap.newKeySet();
      private final AtomicLong threadEpoch = new AtomicLong(0);
  
      KafkaClusterThreadFactory(String prefix) {
          this.prefix = prefix;
      }
  
      @Override
      public Thread newThread(Runnable r) {
          String threadName = prefix + threadEpoch.addAndGet(1);
          Thread thread = new Thread(r, threadName);
  
          threadIds.add(thread.getId());
          return thread;
      }
  
      public Set<Long> getThreadIds() {
          return threadIds;
      }
  }
  