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.simulator;
  
  import java.util.List;
  import java.util.function.LongSupplier;
  
  import com.google.common.collect.ImmutableList;
  
  import org.apache.cassandra.simulator.ActionSchedule.Work;
  import org.apache.cassandra.simulator.systems.SimulatedTime;
  import org.apache.cassandra.utils.CloseableIterator;
  
  import static java.util.Collections.emptyList;
  import static java.util.Collections.singletonList;
  import static org.apache.cassandra.simulator.ActionSchedule.Mode.FINITE;
  import static org.apache.cassandra.simulator.ActionSchedule.Mode.UNLIMITED;
  
  public class ActionPlan
  {
      /**
       * Actions to perform (reliably, and in strict order) before starting the proper simulation
       */
      public final ActionList pre;
  
      /**
       * List of action sequences, each representing the actions planned by a given actor, that will
       * be performed in the provided sequence but otherwise randomly interleaved with the other action sequences.
       * These planned actions may initiate other actions, that will all complete before the next planned action
       * for that action sequence is started.
       */
      public final List<ActionList> interleave;
  
      /**
       * Actions to perform (reliably, and in strict order) after finishing the proper simulation.
       *
       * This is only run if the simulation was successful, so no cleanup should be performed here unless optional.
       */
      public final ActionList post;
  
      public ActionPlan(ActionList pre, List<ActionList> interleave, ActionList post)
      {
          this.pre = pre;
          this.interleave = interleave;
          this.post = post;
      }
  
      public CloseableIterator<?> iterator(ActionSchedule.Mode mode, long runForNanos, LongSupplier schedulerJitter, SimulatedTime time, RunnableActionScheduler runnableScheduler, FutureActionScheduler futureScheduler)
      {
          return new ActionSchedule(time, futureScheduler, schedulerJitter, runnableScheduler,
                                    new Work(UNLIMITED, singletonList(pre.setStrictlySequential())),
                                    new Work(mode, runForNanos, interleave),
                                    new Work(FINITE, singletonList(post.setStrictlySequential())));
      }
  
      public static ActionPlan interleave(List<ActionList> interleave)
      {
          return new ActionPlan(ActionList.empty(), interleave, ActionList.empty());
      }
  
      public static ActionPlan setUpTearDown(ActionList pre, ActionList post)
      {
          return new ActionPlan(pre, emptyList(), post);
      }
  
      public ActionPlan encapsulate(ActionPlan that)
      {
          return new ActionPlan(
                  this.pre.andThen(that.pre),
                  ImmutableList.<ActionList>builder().addAll(this.interleave).addAll(that.interleave).build(),
                  that.post.andThen(this.post));
      }
  }
  
  