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.cassandra.concurrent;
  
  import java.util.concurrent.Callable;
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.concurrent.ScheduledFuture;
  import java.util.concurrent.TimeUnit;
  
  import static com.google.common.primitives.Longs.max;
  import static java.util.concurrent.TimeUnit.NANOSECONDS;
  import static org.apache.cassandra.utils.Clock.Global.nanoTime;
  
  public class ForwardingScheduledExecutorPlus extends ForwardingExecutorPlus implements ScheduledExecutorPlus
  {
      private final ScheduledExecutorService delegate;
  
      public ForwardingScheduledExecutorPlus(ScheduledExecutorService delegate)
      {
          super(delegate);
          this.delegate = delegate;
      }
  
      protected ScheduledExecutorService delegate()
      {
          return delegate;
      }
  
      @Override
      public ScheduledFuture<?> scheduleSelfRecurring(Runnable run, long delay, TimeUnit units)
      {
          return schedule(run, delay, units);
      }
  
      @Override
      public ScheduledFuture<?> scheduleAt(Runnable run, long deadline)
      {
          return schedule(run, max(0, deadline - nanoTime()), NANOSECONDS);
      }
  
      @Override
      public ScheduledFuture<?> scheduleTimeoutAt(Runnable run, long deadline)
      {
          return scheduleTimeoutWithDelay(run, max(0, deadline - nanoTime()), NANOSECONDS);
      }
  
      @Override
      public ScheduledFuture<?> scheduleTimeoutWithDelay(Runnable run, long delay, TimeUnit units)
      {
          return schedule(run, delay, units);
      }
  
      @Override
      public ScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit)
      {
          return delegate().schedule(command, delay, unit);
      }
  
      @Override
      public <V> ScheduledFuture<V> schedule(Callable<V> callable, long delay, TimeUnit unit)
      {
          return delegate().schedule(callable, delay, unit);
      }
  
      @Override
      public ScheduledFuture<?> scheduleAtFixedRate(Runnable command, long initialDelay, long period, TimeUnit unit)
      {
          return delegate().scheduleAtFixedRate(command, initialDelay, period, unit);
      }
  
      @Override
      public ScheduledFuture<?> scheduleWithFixedDelay(Runnable command, long initialDelay, long delay, TimeUnit unit)
      {
          return delegate().scheduleWithFixedDelay(command, initialDelay, delay, unit);
      }
  }
  