content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * Licensed 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 com.google.android.exoplayer2.upstream.cache;
  
  /**
   * Evicts data from a {@link Cache}. Implementations should call {@link Cache#removeSpan(CacheSpan)}
   * to evict cache entries based on their eviction policies.
   */
  public interface CacheEvictor extends Cache.Listener {
  
    /**
     * Called when cache has been initialized.
     */
    void onCacheInitialized();
  
    /**
     * Called when a writer starts writing to the cache.
     *
     * @param cache The source of the event.
     * @param key The key being written.
     * @param position The starting position of the data being written.
     * @param maxLength The maximum length of the data being written.
     */
    void onStartFile(Cache cache, String key, long position, long maxLength);
  
  }
  