Class AsyncMiddleManServlet.GZIPContentTransformer

All Implemented Interfaces:
Enclosing class:

public static class AsyncMiddleManServlet.GZIPContentTransformer extends Object implements AsyncMiddleManServlet.ContentTransformer
  • Constructor Details

  • Method Details

    • transform

      public void transform(ByteBuffer input, boolean finished, List<ByteBuffer> output) throws IOException
      Description copied from interface: AsyncMiddleManServlet.ContentTransformer

      Transforms the given input byte buffers into (possibly multiple) byte buffers.

      The transformation must happen synchronously in the context of a call to this method (it is not supported to perform the transformation in another thread spawned during the call to this method). The transformation may happen or not, depending on the transformer implementation. For example, a buffering transformer may buffer the input aside, and only perform the transformation when the whole input is provided (by looking at the finished flag).

      The input buffer will be cleared and reused after the call to this method. Implementations that want to buffer aside the input (or part of it) must copy the input bytes that they want to buffer.

      Typical implementations:

       // Identity transformation (no transformation, the input is copied to the output)
       public void transform(ByteBuffer input, boolean finished, List<ByteBuffer> output)
       // Discard transformation (all input is discarded)
       public void transform(ByteBuffer input, boolean finished, List<ByteBuffer> output)
           // Empty
       // Buffering identity transformation (all input is buffered aside until it is finished)
       public void transform(ByteBuffer input, boolean finished, List<ByteBuffer> output)
           ByteBuffer copy = ByteBuffer.allocate(input.remaining());
           if (finished)
               List<ByteBuffer> copies = retrieve();
      Specified by:
      transform in interface AsyncMiddleManServlet.ContentTransformer
      input - the input content to transform (may be of length zero)
      finished - whether the input content is finished or more will come
      output - where to put the transformed output content
      IOException - in case of transformation failures