package com.atlassian.plugin.cache.filecache.impl;
   
   import java.io.*;
   
   public class ThrowingFileOpener implements CachedFile.FileOpener {
       private transient RuntimeException onCloseRuntime;
   
       @Override
       public OutputStream open(File file) throws IOException {
          return new FileOutputStream(file) {
              @Override
              public void close() throws IOException {
                  if (onCloseRuntime != null) {
                      throw onCloseRuntime;
                  }
                  super.close();
              }
          };
      }
  
      public void setOnClose(RuntimeException onClose) {
          this.onCloseRuntime = onClose;
      }
  }