Http2DataChunkedInput Class — netty Architecture

Source Code

codec-http2/src/main/java/io/netty/handler/codec/http2/Http2DataChunkedInput.java lines 46–116

public final class Http2DataChunkedInput implements ChunkedInput<Http2DataFrame> {

    private final ChunkedInput<ByteBuf> input;
    private final Http2FrameStream stream;
    private boolean endStreamSent;

    /**
     * Creates a new instance using the specified input.
     *
     * @param input  {@link ChunkedInput} containing data to write
     * @param stream {@link Http2FrameStream} holding stream info
     */
    public Http2DataChunkedInput(ChunkedInput<ByteBuf> input, Http2FrameStream stream) {
        this.input = ObjectUtil.checkNotNull(input, "input");
        this.stream = ObjectUtil.checkNotNull(stream, "stream");
    }

    @Override
    public boolean isEndOfInput() throws Exception {
        if (input.isEndOfInput()) {
            // Only end of input after last HTTP chunk has been sent
            return endStreamSent;
        }
        return false;
    }

    @Override
    public void close() throws Exception {
        input.close();
    }

    @Deprecated
    @Override
    public Http2DataFrame readChunk(ChannelHandlerContext ctx) throws Exception {
        return readChunk(ctx.alloc());
    }

    @Override
    public Http2DataFrame readChunk(ByteBufAllocator allocator) throws Exception {
        if (endStreamSent) {
            return null;
        }

        if (input.isEndOfInput()) {
            endStreamSent = true;
            return new DefaultHttp2DataFrame(true).stream(stream);
        }

        ByteBuf buf = input.readChunk(allocator);
        if (buf == null) {
            return null;
        }

        final Http2DataFrame dataFrame = new DefaultHttp2DataFrame(buf, input.isEndOfInput()).stream(stream);
        if (dataFrame.isEndStream()) {
            endStreamSent = true;
        }

        return dataFrame;
    }

    @Override
    public long length() {
        return input.length();
    }

    @Override
    public long progress() {
        return input.progress();
    }
}