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.systems;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.function.Consumer;
  
  import org.apache.cassandra.utils.concurrent.Ref;
  import org.apache.cassandra.utils.memory.BufferPool;
  
  /**
   * A simple encapsulation for capturing and reporting failures during the simulation
   */
  public class Failures implements Consumer<Throwable>, BufferPool.DebugLeaks, Ref.OnLeak
  {
      private final List<Throwable> failures = Collections.synchronizedList(new ArrayList<>());
      private volatile boolean hasFailure;
      private volatile boolean ignoreFailures = false;
  
      public void onFailure(Throwable t)
      {
          if (ignoreFailures) return;
          failures.add(t);
          hasFailure = true;
      }
  
      public void ignoreFailures()
      {
          ignoreFailures = true;
      }
  
      public boolean hasFailure()
      {
          return hasFailure;
      }
  
      public List<Throwable> get()
      {
          return Collections.unmodifiableList(failures);
      }
  
      @Override
      public void accept(Throwable throwable)
      {
          onFailure(throwable);
      }
  
      @Override
      public void leak()
      {
          failures.add(new AssertionError("ChunkCache leak detected"));
      }
  
      @Override
      public void onLeak(Object state)
      {
          failures.add(new AssertionError("Ref leak detected " + state.toString()));
      }
  }
  