ChunkedInput Type — netty Architecture

Source Code

handler/src/main/java/io/netty/handler/stream/ChunkedInput.java lines 25–81

public interface ChunkedInput<B> {

    /**
     * Return {@code true} if and only if there is no data left in the stream
     * and the stream has reached at its end.
     */
    boolean isEndOfInput() throws Exception;

    /**
     * Releases the resources associated with the input.
     */
    void close() throws Exception;

    /**
     * @deprecated Use {@link #readChunk(ByteBufAllocator)}.
     *
     * <p>Fetches a chunked data from the stream. Once this method returns the last chunk
     * and thus the stream has reached at its end, any subsequent {@link #isEndOfInput()}
     * call must return {@code true}.
     *
     * @param ctx The context which provides a {@link ByteBufAllocator} if buffer allocation is necessary.
     * @return the fetched chunk.
     *         {@code null} if there is no data left in the stream.
     *         Please note that {@code null} does not necessarily mean that the
     *         stream has reached at its end.  In a slow stream, the next chunk
     *         might be unavailable just momentarily.
     */
    @Deprecated
    B readChunk(ChannelHandlerContext ctx) throws Exception;

    /**
     * Fetches a chunked data from the stream. Once this method returns the last chunk
     * and thus the stream has reached at its end, any subsequent {@link #isEndOfInput()}
     * call must return {@code true}.
     *
     * @param allocator {@link ByteBufAllocator} if buffer allocation is necessary.
     * @return the fetched chunk.
     *         {@code null} if there is no data left in the stream.
     *         Please note that {@code null} does not necessarily mean that the
     *         stream has reached at its end.  In a slow stream, the next chunk
     *         might be unavailable just momentarily.
     */
    B readChunk(ByteBufAllocator allocator) throws Exception;

    /**
     * Returns the length of the input.
     * @return  the length of the input if the length of the input is known.
     *          a negative value if the length of the input is unknown.
     */
    long length();

    /**
     * Returns current transfer progress.
     */
    long progress();

}