package com.atlassian.plugin.cache.filecache.impl;
   
   import com.atlassian.plugin.cache.filecache.FileCache;
   import com.atlassian.plugin.cache.filecache.FileCacheStreamProvider;
   import com.atlassian.plugin.servlet.DownloadException;
   
   import java.io.OutputStream;
   
   /**
   * Always streams each resource from the given input
   * @since v2.13
   */
  public class PassThroughFileCache<K> implements FileCache<K> {
      public static <K>PassThroughFileCache<K> instance() {
          return new PassThroughFileCache<K>();
      }
  
      @Override
      public void stream(K key, OutputStream dest, FileCacheStreamProvider input) throws DownloadException {
          input.writeStream(dest);
      }
  
      @Override
      public void clear() {
      }
  }