content: /*
   * Copyright 2024 Copyright 2022 Aiven Oy and
   * bigquery-connector-for-apache-kafka project contributors
   *
   * This software contains code derived from the Confluent BigQuery
   * Kafka Connector, Copyright Confluent, Inc, which in turn
   * contains code derived from the WePay BigQuery Kafka Connector,
   * Copyright WePay, Inc.
   *
   * Licensed 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 com.wepay.kafka.connect.bigquery.write.batch;
  
  import java.util.concurrent.CountDownLatch;
  import org.apache.kafka.connect.errors.ConnectException;
  
  /**
   * A Runnable that counts down, and then waits for the countdown to be finished.
   */
  public class CountDownRunnable implements Runnable {
  
    private CountDownLatch countDownLatch;
  
    public CountDownRunnable(CountDownLatch countDownLatch) {
      this.countDownLatch = countDownLatch;
    }
  
    @Override
    public void run() {
      countDownLatch.countDown();
      try {
        /*
         * Hog this thread until ALL threads are finished counting down.  This is needed so that
         * this thread doesn't start processing another countdown. If countdown tasks are holding onto
         * all the threads, then we know that nothing that went in before the countdown is still
         * processing.
         */
        countDownLatch.await();
      } catch (InterruptedException err) {
        throw new ConnectException("Thread interrupted while waiting for countdown.", err);
      }
    }
  }
  