Shinsuke Sugaya <******@****.***> 1730954650 +0900

    /**
     * Adds a URL to the queue.
     *
     * @param sessionId The session ID.
     * @param url The URL.
     */
    void add(String sessionId, String url);

    /**
     * Inserts a URL queue.
     *
     * @param urlQueue The URL queue.
     */
    void insert(QUEUE urlQueue);

    /**
     * Deletes a URL queue.
     *
     * @param sessionId The session ID.
     */

    startNs = queue.taskRunner.backend.nanoTime()
    log(task, queue, "starting")
  }

  var completedNormally = false
  try {
    val result = block()
    completedNormally = true
    return result
  } finally {
    if (loggingEnabled) {
      val elapsedNs = queue.taskRunner.backend.nanoTime() - startNs
      if (completedNormally) {
        log(task, queue, "finished run in ${formatDuration(elapsedNs)}")

import java.util.Collection;
import java.util.Queue;

/**
 * A non-blocking queue which automatically evicts elements from the head of the queue when
 * attempting to add new elements onto the queue and it is full. This queue orders elements FIFO
 * (first-in-first-out). This data structure is logically equivalent to a circular buffer (i.e.,
 * cyclic buffer or ring buffer).
 *

    // This dispatcher matches the original dispatch behavior of EventBus.

    /** Per-thread queue of events to dispatch. */
    @SuppressWarnings("ThreadLocalUsage") // Each Dispatcher needs its own state.
    private final ThreadLocal<Queue<Event>> queue =
        new ThreadLocal<Queue<Event>>() {
          @Override
          protected Queue<Event> initialValue() {
            return new ArrayDeque<>();
          }
        };

     */
    public synchronized void addUrlQueueList(final String sessionId, final Queue<UrlQueueImpl<Long>> urlQueueList) {
        final Queue<UrlQueueImpl<Long>> uqList = getUrlQueueList(sessionId);
        uqList.addAll(urlQueueList);
        urlQueueMap.put(sessionId, uqList);
    }

    /**
     * Removes the URL queue for the specified session ID.
     * @param sessionId the session ID
     */

  }

  @Test fun taskFailsWithUncheckedException() {
    queue.schedule("task", TimeUnit.MILLISECONDS.toNanos(100)) {
      log.put("failing task running")
      throw RuntimeException("boom!")
    }

    queue.schedule("task", TimeUnit.MILLISECONDS.toNanos(200)) {
      log.put("normal task running")
      return@schedule -1L
    }

    queue.idleLatch().await(500, TimeUnit.MILLISECONDS)

 *   <li>Deleting URL queues associated with a session.</li>
 *   <li>Deleting all URL queues.</li>
 *   <li>Offering a list of URLs to the queue, ensuring duplicates are not added.</li>
 *   <li>Polling (retrieving and removing) a URL from the queue.</li>
 *   <li>Saving the session (currently a no-op).</li>
 *   <li>Checking if a URL has already been visited.</li>
 *   <li>Generating URL queues from a previous session's access results.</li>

        this.filterIndex = filterIndex;
    }

    /**
     * Returns the number of queue shards.
     * @return The number of queue shards.
     */
    public int getQueueShards() {
        return queueShards;
    }

    /**
     * Sets the number of queue shards.
     * @param queueShards The number of queue shards.
     */
    public void setQueueShards(final int queueShards) {

/**
 * The UrlQueue interface represents a queue of URLs to be processed by a web crawler.
 * It provides methods to get and set various properties of a URL queue entry.
 *
 * @param <IDTYPE> the type of the identifier for the URL queue entry
 */
public interface UrlQueue<IDTYPE> {

    /**
     * Retrieves the unique identifier of the URL queue.
     *
     * @return the unique identifier of type IDTYPE.
     */