/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.core.spi;
  
  import ch.qos.logback.core.helpers.CyclicBuffer;
  
  import java.util.*;
  
  /**
   * CyclicBufferTracker tracks {@link CyclicBuffer} instances.
   *
   * @author Ceki Gülcü
   */
  public class CyclicBufferTracker<E> extends AbstractComponentTracker<CyclicBuffer<E>> {
  
      static final int DEFAULT_NUMBER_OF_BUFFERS = 64;
  
      static final int DEFAULT_BUFFER_SIZE = 256;
      int bufferSize = DEFAULT_BUFFER_SIZE;
  
      public CyclicBufferTracker() {
          super();
          setMaxComponents(DEFAULT_NUMBER_OF_BUFFERS);
      }
  
      public int getBufferSize() {
          return bufferSize;
      }
  
      public void setBufferSize(int bufferSize) {
          this.bufferSize = bufferSize;
      }
  
      @Override
      protected void processPriorToRemoval(CyclicBuffer<E> component) {
          component.clear();
      }
  
      @Override
      protected CyclicBuffer<E> buildComponent(String key) {
          return new CyclicBuffer<E>(bufferSize);
      }
  
      @Override
      protected boolean isComponentStale(CyclicBuffer<E> eCyclicBuffer) {
          return false;
      }
  
      // for testing purposes
      List<String> liveKeysAsOrderedList() {
          return new ArrayList<String>(liveMap.keySet());
      }
  
      List<String> lingererKeysAsOrderedList() {
          return new ArrayList<String>(lingerersMap.keySet());
  
      }
  
  }