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 accord.impl.basic;
  
  import java.util.concurrent.TimeUnit;
  import java.util.function.LongSupplier;
  
  import accord.api.Scheduler.Scheduled;
  
  class RecurringPendingRunnable implements PendingRunnable, Scheduled
  {
      final int source;
      final PendingQueue requeue;
      final LongSupplier delay;
      final TimeUnit units;
      final boolean isRecurring;
      Runnable run;
      Runnable onCancellation;
  
      RecurringPendingRunnable(int source, PendingQueue requeue, Runnable run, LongSupplier delay, TimeUnit units, boolean isRecurring)
      {
          this.source = source;
          this.requeue = requeue;
          this.run = run;
          this.delay = delay;
          this.units = units;
          this.isRecurring = isRecurring;
      }
  
      @Override
      public Pending origin()
      {
          return this;
      }
  
      @Override
      public void run()
      {
          if (run != null)
          {
              run.run();
              maybeRequeue();
          }
      }
  
      public void maybeRequeue()
      {
          if (requeue != null) requeue.add(this, delay.getAsLong(), units);
          else run = null;
      }
  
      @Override
      public void cancel()
      {
          run = null;
          if (onCancellation != null)
          {
              onCancellation.run();
              onCancellation = null;
          }
      }
  
      @Override
      public boolean isDone()
      {
          return run == null;
      }
  
      public void onCancellation(Runnable run)
      {
          this.onCancellation = run;
      }
  
      @Override
      public String toString()
      {
          if (run == null)
              return "Done/Cancelled";
  
          return run.getClass().getSimpleName() + " with " + delay + " " + units + " delay";
      }
  
      public static boolean isRecurring(Pending pending)
      {
          Pending origin = pending.origin();
          return origin instanceof RecurringPendingRunnable && ((RecurringPendingRunnable) origin).isRecurring;
      }
  
      private static String print(Runnable run)
      {
          Class<?> clazz = run.getClass();
          while (clazz.isAnonymousClass())
              clazz = clazz.getDeclaringClass();
          return clazz.getSimpleName();
      }
  }
  