* ----------
 *
 * Tasks control their recurrence schedule. The [runOnce] function returns -1L to signify that the
 * task should not be executed again. Otherwise it returns a delay until the next execution.
 *
 * A task has at most one next execution. If the same task instance is scheduled multiple times, the
 * earliest one wins. This applies to both executions scheduled with [TaskRunner.Queue.schedule] and
 * those implied by the returned execution delay.

```
[2020-01-01 00:00:00] Q10000 scheduled after   0 µs: OkHttp ConnectionPool
[2020-01-01 00:00:00] Q10000 starting              : OkHttp ConnectionPool
[2020-01-01 00:00:00] Q10000 run again after 300 s : OkHttp ConnectionPool
[2020-01-01 00:00:00] Q10000 finished run in   1 ms: OkHttp ConnectionPool
[2020-01-01 00:00:00] Q10001 scheduled after   0 µs: OkHttp squareup.com applyAndAckSettings

      private ScheduledFuture<@Nullable Void> submitToExecutor(Schedule schedule) {
        return executor.schedule(this, schedule.delay, schedule.unit);
      }
    }

    /**
     * Contains the most recently submitted {@code Future}, which may be cancelled or updated,
     * always under a lock.
     */
    private static final class SupplantableFuture implements Cancellable {
      private final ReentrantLock lock;

      private ScheduledFuture<@Nullable Void> submitToExecutor(Schedule schedule) {
        return executor.schedule(this, schedule.delay, schedule.unit);
      }
    }

    /**
     * Contains the most recently submitted {@code Future}, which may be cancelled or updated,
     * always under a lock.
     */
    private static final class SupplantableFuture implements Cancellable {
      private final ReentrantLock lock;

    @Resource
    private JobHelper jobHelper;

    /** The job class to be executed by this scheduler */
    protected Class<? extends LaJob> jobClass = ScriptExecutorJob.class;

    /** The timestamp when the scheduler was last updated */
    protected long schedulerTime;

    @Override
    public void schedule(final LaCron cron) {
        schedulerTime = systemHelper.getCurrentTimeAsLong();

                        step.status.compareAndSet(SCHEDULED, FAILED);

                        // Store the exception in the step for handling in the TEARDOWN phase
                        step.exception = e;
                        logger.debug("Stored exception for step {} to be handled in TEARDOWN phase", step, e);

                        // Let the scheduler handle after:* phases and TEARDOWN in the next cycle

          } catch (_: InterruptedException) {
            // Will cause all tasks to exit unless more are scheduled!
            cancelAll()
          } finally {
            coordinatorWaiting = false
          }
        }
      }
    }
  }

  /** Start another thread, unless a new thread is already scheduled to start. */
  private fun startAnotherThread() {
    assertLockHeld()

 */
package org.codelibs.fess.app.web.admin.scheduler;

/**
 * The search form for Scheduler.
 */
public class SearchForm {

    /**
     * Default constructor for SearchForm.
     */
    public SearchForm() {
    }

    /**
     * The ID field for searching scheduled jobs.
     */
    public String id;

    }

    @Override
    public ListenableScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) {
      TrustedListenableFutureTask<@Nullable Void> task =
          TrustedListenableFutureTask.create(command, null);
      ScheduledFuture<?> scheduled = delegate.schedule(task, delay, unit);
      return new ListenableScheduledTask<@Nullable Void>(task, scheduled);
    }

    @Override

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.exception;

/**
 * This exception is thrown when a scheduled job fails.
 */
public class ScheduledJobException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructor.
     * @param message Exception message.